HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news

Cheap flights from St. Louis to Portland (STL - PWM) from $135

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/4. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
STL — PWM
Jun 2 — Jun 91
From?
To?
Sun 6/2
Sun 6/9
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

The best prices from Lambert-St Louis to Portland are usually found in January or February, booked 1 days in advance, depart on a Wednesday or Tuesday and return on a Wednesday

Cheap flight deals from St. Louis to Portland

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Portland (PWM). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated May 28, 2024.

Popular in

March

Cheapest in

January

Round-trip from

$293

One-way from

$172
High demand for flights, 23% potential price rise
Search Deals
Best time to find cheap flights, 41% potential price drop
Search Deals
From Lambert-St Louis to Portland
Search Deals
One-way flight from Lambert-St Louis to Portland
Search Deals

What is the cheapest day to fly round-trip from St. Louis to Portland, Maine?

Users have found that flying from St. Louis to Portland, Maine on a Saturday typically leans towards higher prices. However, this doesn’t mean you still can’t find a deal. Flexibility with other aspects of your flight can still land a great price for your trip.

What is the cheapest month to fly from St. Louis to Portland, Maine?

Due to multiple factors, expect to potentially pay more when booking in March. For low rates, January can be a great choice for travel to Portland, Maine. Flights to Portland, Maine from St. Louis in January are about $466 on average during January, but can be found for as low as $193.

When is the cheapest time to fly from St. Louis to Portland, Maine (STL - PWM)?

When flying from St. Louis to Portland, Maine, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 43% versus a flight at noon.

Cheap American Airlines flights from St. Louis to Portland

Explore cheap flight options specifically provided by American Airlines for the route between St. Louis and Portland. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,696,634 searches. Data last updated May 28, 2024.
Find some of the cheapest American Airlines flights traveling from St. Louis to Portland. Make sure to double check the flight details before booking.
Wed 6/265:38 pmSTL - PWM
1 stop6h 14mAmerican Airlines
Wed 7/31:00 pmPWM - STL
1 stop7h 29mAmerican Airlines
Deal found 5/27$276
Tue 7/305:17 amSTL - PWM
1 stop6h 00mAmerican Airlines
Wed 8/75:30 pmPWM - STL
1 stop5h 47mAmerican Airlines
Deal found 5/27$285
Mon 9/165:29 amSTL - PWM
1 stop5h 57mAmerican Airlines
Mon 9/237:29 amPWM - STL
1 stop5h 29mAmerican Airlines
Deal found 5/27$303
Tue 8/209:09 amSTL - PWM
1 stop4h 59mAmerican Airlines
Sun 8/255:30 pmPWM - STL
1 stop5h 47mAmerican Airlines
Deal found 5/27$315
Thu 6/275:38 pmSTL - PWM
1 stop6h 14mAmerican Airlines
Mon 7/16:00 amPWM - STL
1 stop7h 16mAmerican Airlines
Deal found 5/27$328
Sun 9/155:29 amSTL - PWM
1 stop5h 57mAmerican Airlines
Sun 9/2212:21 pmPWM - STL
1 stop6h 03mAmerican Airlines
Deal found 5/27$345
Sun 8/45:46 pmSTL - PWM
1 stop5h 00mAmerican Airlines
Sat 8/105:30 pmPWM - STL
1 stop5h 47mAmerican Airlines
Deal found 5/27$361
Thu 10/36:02 amSTL - PWM
1 stop4h 34mAmerican Airlines
Mon 10/75:29 pmPWM - STL
1 stop4h 51mAmerican Airlines
Deal found 5/27$376
Fri 10/186:28 pmSTL - PWM
1 stop4h 10mAmerican Airlines
Mon 10/215:13 pmPWM - STL
1 stop7h 07mAmerican Airlines
Deal found 5/27$385

Cheap Delta flights from St. Louis to Portland

Explore cheap flight options specifically provided by Delta for the route between St. Louis and Portland. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,696,634 searches. Data last updated May 28, 2024.
To aid your search, here are some of the cheapest Delta flights we've found from St. Louis to Portland. Deals frequently update to provide users with more options.
Wed 10/165:05 pmSTL - PWM
1 stop5h 24mDelta
Wed 10/235:30 amPWM - STL
1 stop5h 01mDelta
Deal found 5/27$286
Mon 7/226:11 pmSTL - PWM
1 stop4h 15mDelta
Wed 7/316:02 amPWM - STL
1 stop6h 40mDelta
Deal found 5/27$342
Tue 8/133:49 pmSTL - PWM
1 stop5h 11mDelta
Sun 8/187:00 amPWM - STL
1 stop5h 42mDelta
Deal found 5/27$346
Fri 7/263:49 pmSTL - PWM
1 stop5h 11mDelta
Sat 8/35:03 amPWM - STL
2 stops10h 41mDelta
Deal found 5/28$750
Fri 7/263:49 pmSTL - PWM
1 stop5h 11mDelta
Sat 8/35:03 amPWM - STL
2 stops10h 41mDelta
Deal found 5/27$780
Fri 7/262:16 pmSTL - PWM
2 stops7h 23mDelta
Sat 8/35:03 amPWM - STL
2 stops10h 41mDelta
Deal found 5/28$1,057
Fri 7/262:16 pmSTL - PWM
2 stops7h 23mDelta
Sun 7/285:03 amPWM - STL
2 stops12h 17mDelta
Deal found 5/26$1,106
Tue 7/302:16 pmSTL - PWM
2 stops7h 23mDelta
Wed 8/76:02 amPWM - STL
2 stops11h 18mDelta
Deal found 5/27$1,141
Sat 7/136:30 amSTL - PWM
2 stops8h 03mDelta
Tue 7/2311:32 amPWM - STL
2 stops9h 31mDelta
Deal found 5/27$1,254

Cheap St. Louis to Portland flights in May & June 2024

Find cheap flight options from St. Louis to Portland specifically for the months of May and June 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,696,634 searches. Prices were last updated on May 28, 2024.
Check out some of the best flight deals from St. Louis to Portland in 2024. Check back regularly for other flight deals.
Sat 6/2912:13 pmSTL - PWM
1 stop19h 53mFrontier
Tue 7/212:00 pmPWM - STL
1 stop21h 25mFrontier
Deal found 5/27$251
Sat 6/19:29 pmSTL - PWM
1 stop10h 40mFrontier
Sat 8/3111:46 amPWM - STL
1 stop20h 16mFrontier
Deal found 5/27$255
Mon 6/176:16 pmSTL - PWM
1 stop13h 50mFrontier
Thu 6/201:57 pmPWM - STL
1 stop18h 10mFrontier
Deal found 5/28$260
Sat 6/19:29 pmSTL - PWM
2 stops12h 16mFrontier
Sat 8/3111:46 amPWM - STL
1 stop20h 16mFrontier
Deal found 5/27$261
Mon 6/106:16 pmSTL - PWM
1 stop13h 50mFrontier
Tue 6/1111:40 amPWM - STL
1 stop20h 45mFrontier
Deal found 5/27$275
Wed 6/265:38 pmSTL - PWM
1 stop6h 14mAmerican Airlines
Wed 7/31:00 pmPWM - STL
1 stop7h 29mAmerican Airlines
Deal found 5/27$276
Thu 6/275:38 pmSTL - PWM
1 stop6h 14mAmerican Airlines
Mon 7/16:00 amPWM - STL
1 stop7h 16mAmerican Airlines
Deal found 5/27$328
Fri 6/1412:15 pmSTL - PWM
3 stops21h 56mMultiple Airlines
Mon 6/177:39 pmPWM - STL
2 stops19h 44mMultiple Airlines
Deal found 5/28$365
Fri 6/285:38 pmSTL - PWM
1 stop6h 14mAmerican Airlines
Tue 7/27:42 amPWM - STL
1 stop7h 34mAmerican Airlines
Deal found 5/27$386

St. Louis to Portland 2024 flight deals

Discover exclusive flight deals for travel between St. Louis and Portland in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,696,634 searches. Data last updated May 28, 2024.
Check out some of the best flight deals from St. Louis to Portland in 2024. Check back regularly for other flight deals.
Sat 6/2912:13 pmSTL - PWM
1 stop19h 53mFrontier
Tue 7/212:00 pmPWM - STL
1 stop21h 25mFrontier
Deal found 5/27$251
Sat 6/19:29 pmSTL - PWM
1 stop10h 40mFrontier
Sat 8/3111:46 amPWM - STL
1 stop20h 16mFrontier
Deal found 5/27$255
Mon 6/176:16 pmSTL - PWM
1 stop13h 50mFrontier
Thu 6/201:57 pmPWM - STL
1 stop18h 10mFrontier
Deal found 5/28$260
Sat 6/19:29 pmSTL - PWM
2 stops12h 16mFrontier
Sat 8/3111:46 amPWM - STL
1 stop20h 16mFrontier
Deal found 5/27$261
Mon 6/106:16 pmSTL - PWM
1 stop13h 50mFrontier
Tue 6/1111:40 amPWM - STL
1 stop20h 45mFrontier
Deal found 5/27$275
Wed 6/265:38 pmSTL - PWM
1 stop6h 14mAmerican Airlines
Wed 7/31:00 pmPWM - STL
1 stop7h 29mAmerican Airlines
Deal found 5/27$276
Tue 7/305:17 amSTL - PWM
1 stop6h 00mAmerican Airlines
Wed 8/75:30 pmPWM - STL
1 stop5h 47mAmerican Airlines
Deal found 5/27$285
Wed 10/165:05 pmSTL - PWM
1 stop5h 24mDelta
Wed 10/235:30 amPWM - STL
1 stop5h 01mDelta
Deal found 5/27$286
Sat 7/137:33 pmSTL - PWM
1 stop15h 24mFrontier
Tue 7/232:51 pmPWM - STL
1 stop18h 52mFrontier
Deal found 5/28$289

St. Louis to Portland flights leaving soon

Find last-minute flight options from St. Louis to Portland for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 2,696,634 searches. Data last updated May 28, 2024.
Book one of these great deals on flights from St. Louis to Portland. It's wise to confirm all flight details are correct before booking.
Sun 6/27:30 pmSTL - PWM
1 stop13h 39mMultiple Airlines
Mon 6/37:39 pmPWM - STL
2 stops18h 58mMultiple Airlines
Deal found 5/27$420
Sun 6/26:19 pmSTL - PWM
2 stops14h 50mMultiple Airlines
Mon 6/37:39 pmPWM - STL
2 stops18h 58mMultiple Airlines
Deal found 5/27$476
Sun 6/22:00 pmSTL - PWM
3 stops19h 09mMultiple Airlines
Mon 6/37:39 pmPWM - STL
2 stops18h 58mMultiple Airlines
Deal found 5/27$549
Tue 6/42:00 pmSTL - PWM
1 stop7h 44mAmerican Airlines
Thu 6/611:35 amPWM - STL
1 stop9h 38mAmerican Airlines
Deal found 5/27$634
Sun 6/22:00 pmSTL - PWM
1 stop7h 44mAmerican Airlines
Mon 6/312:21 pmPWM - STL
1 stop8h 09mAmerican Airlines
Deal found 5/27$661
Sun 6/22:00 pmSTL - PWM
3 stops19h 09mMultiple Airlines
Mon 6/31:05 pmPWM - STL
3 stops25h 32mMultiple Airlines
Deal found 5/27$668
Tue 6/41:10 pmSTL - PWM
1 stop7h 23mUnited Airlines
Thu 6/69:10 amPWM - STL
2 stops13h 37mUnited Airlines
Deal found 5/28$755
Tue 6/41:01 pmSTL - PWM
2 stops8h 40mAmerican Airlines
Thu 6/611:35 amPWM - STL
2 stops10h 53mAmerican Airlines
Deal found 5/27$977

One-way flights to Portland from St. Louis

Search for one-way flight options from St. Louis to Portland. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 2,696,634 searches. Data last updated May 28, 2024.
Some of the best available deals we've found on one-way flights from St. Louis to Portland. Users can also find round-trip St. Louis to Portland flights by using the search form above.
Thu 7/45:15 amSTL - PWM
1 stop5h 59mAmerican Airlines
Deal found 5/27$135
Sat 7/135:46 pmSTL - PWM
1 stop5h 00mAmerican Airlines
Deal found 5/27$172
Thu 7/46:22 pmSTL - PWM
3 stops39h 26mMultiple Airlines
Deal found 5/27$240
Thu 7/48:05 amSTL - PWM
2 stops14h 48mUnited Airlines
Deal found 5/27$279
Sat 7/1311:34 amSTL - PWM
2 stops23h 54mMultiple Airlines
Deal found 5/27$317
Sat 7/1311:34 amSTL - PWM
3 stops23h 54mMultiple Airlines
Deal found 5/27$352

Find flights from St. Louis to Portland within your budget

Customize your flight search to find flights from St. Louis to Portland that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,696,634 searches. Data last updated May 28, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$251 - $426

Route

Depart

Return

Price

Lambert-St LouisPortland

STL - PWM

STLPWM

Lambert-St Louis

Sat 6/29

1 stop19h 53m

Portland

Tue 7/2

1 stop21h 25m

$251

Lambert-St LouisPortland

STL - PWM

STLPWM

Lambert-St Louis

Mon 6/10

1 stop13h 50m

Portland

Tue 6/11

1 stop20h 45m

$275

Lambert-St LouisPortland

STL - PWM

STLPWM

Lambert-St Louis

Wed 6/26

1 stop6h 14m

Portland

Wed 7/3

1 stop7h 29m

$276

Lambert-St LouisPortland

STL - PWM

STLPWM

Lambert-St Louis

Tue 7/30

1 stop6h 00m

Portland

Wed 8/7

1 stop5h 47m

$285

Lambert-St LouisPortland

STL - PWM

STLPWM

Lambert-St Louis

Wed 10/16

1 stop5h 24m

Portland

Wed 10/23

1 stop5h 01m

$286

Lambert-St LouisPortland

STL - PWM

STLPWM

Lambert-St Louis

Mon 9/16

1 stop5h 57m

Portland

Mon 9/23

1 stop5h 29m

$303

Lambert-St LouisPortland

STL - PWM

STLPWM

Lambert-St Louis

Sat 7/13

1 stop15h 24m

Portland

Tue 7/16

1 stop18h 52m

$304

Lambert-St LouisPortland

STL - PWM

STLPWM

Lambert-St Louis

Wed 6/26

2 stops21h 33m

Portland

Wed 7/3

3 stops28h 58m

$392

Lambert-St LouisPortland

STL - PWM

STLPWM

Lambert-St Louis

Tue 10/1

2 stops11h 50m

Portland

Sat 10/5

1 stop5h 28m

$426

Flights are sorted by cheapest first

Deals found on 5/27

When is the best time to book a flight from St. Louis to Portland, Maine?

Use this chart to determine the optimal time to book a round-trip flight from St. Louis to Portland. Price data was last updated on May 24, 2024.
The price you pay for your flight from St. Louis to Portland, Maine may vary depending on when you book. For the best chance of a lower fare, look to book 1 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
Search Deals

When is the cheapest time to fly from St. Louis to Portland, Maine?

Use this chart to determine the cheapest time to fly round-trip from St. Louis to Portland. Price data was last updated on May 26, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
Travelers seeking maximum savings on their St. Louis to Portland, Maine flight should consider departing on Monday evenings when fares are most often at their lowest. Monday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.
Search Deals

Best time to book a flight from St. Louis to Portland

Have a flexible travel schedule? Discover the best time to fly to Portland from St. Louis with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Temperature and rainfall in Portland by month

Plan your trip to Portland by taking into account the average temperature and rainfall totals by month.

PWM

Temperature

23 - 68 °F

Reviews of airlines servicing Portland

Get insights into the airlines that provide service to Portland. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Portland. Reviews last updated May 28, 2024.
Read reviews from past customers who have flown American Airlines, Delta and United Airlines from St. Louis to Portland. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
10,476 reviews
Check prices

Overall

8.0

Comfort

7.9

Food

7.4

Boarding

8.2

Crew

8.6

Entertainment

8.0

Reviews

1 / 10

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.

Delta
8.0
Very good
10,476 reviews
Delta
8.0
Very good
10,476 reviews
Check prices

Overall

8.0

Comfort

7.9

Food

7.4

Boarding

8.2

Crew

8.6

Entertainment

8.0

Reviews

1 / 10

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.

United Airlines
7.4
Good
10,799 reviews
Delta
8.0
Very good
10,476 reviews
Check prices

Overall

8.0

Comfort

7.9

Food

7.4

Boarding

8.2

Crew

8.6

Entertainment

8.0

Reviews

1 / 10

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.

American Airlines
7.3
Good
14,316 reviews
Delta
8.0
Very good
10,476 reviews
Check prices

Overall

8.0

Comfort

7.9

Food

7.4

Boarding

8.2

Crew

8.6

Entertainment

8.0

Reviews

1 / 10

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.

Frontier
6.3
Okay
4,016 reviews
Delta
8.0
Very good
10,476 reviews
Check prices

Overall

8.0

Comfort

7.9

Food

7.4

Boarding

8.2

Crew

8.6

Entertainment

8.0

Reviews

1 / 10

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Portland. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • Can I find flights from St. Louis to Portland, Maine for under $300 on Cheapflights?

    Yes, there are multiple flights from St. Louis to Portland, Maine for under $300. The cheapest flight booked recently is on Frontier for just $251, but on average you can expect to pay $332.

  • Are there last-minute flights available from St. Louis to Portland, Maine for under $500?

    There are currently 8+ open flights from St. Louis to Portland, Maine within the next 7 days for less than $500.

  • What are the cheapest airlines flying from St. Louis to Portland, Maine round-trip?

    According to our current data, Frontier ($251), American Airlines ($276), and Delta ($286) offers the cheapest pricing from St. Louis to Portland, Maine. These flights start at 46% lower than the current average price 3 months from now.

  • What does STL to PWM mean?

    Lambert-St Louis Airport is STL and Portland Airport is PWM. These codes are created by the International Air Transport Association (IATA) and airlines use them to identify the departing and arrival airports in the flight routes they service.

  • Can I find deals for flights from St. Louis to Portland that include extra baggage allowance?

    The amount of baggage you can bring on your St. Louis to Portland flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from St. Louis to Portland with specific airlines?

    Yes, Cheapflights allows you to browse and filter St. Louis to Portland flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • Can I find deals for flights from St. Louis to Portland that include hotel bookings?

    Yes. In addition to deals on St. Louis to Portland flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St. Louis to Portland?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Portland.

  • Can I find deals for business class flights from St. Louis to Portland?

    Yes. Cheapflights offers flight deals from St. Louis to Portland by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • Can I find deals for flights from St. Louis to Portland that allow pets onboard?

    Many airlines flying from St. Louis to Portland offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from St. Louis to Portland?

    Yes, you can often find last-minute deals on St. Louis to Portland flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the St. Louis to Portland, Maine flight deals updated?

    The St. Louis to Portland, Maine flight deals you see on this page were last updated on 5/28.

  • What are the most popular airlines that fly from St. Louis to Portland, Maine?

    Before booking your flight from St. Louis to Portland, Maine check out the most popular airlines for this route: American Airlines, JetBlue or Delta.

  • When is the best time to book a flight from St. Louis to Portland, Maine?

    Currently, January is the cheapest month in which you can book a flight from St. Louis to Portland, Maine (average of $293). Flying from St. Louis to Portland, Maine in April is currently the most expensive (average of $498). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for St. Louis to Portland
See prices for flight routes from nearby airports that may be better suited for you.

Kansas City to Boston flights
St. Louis to Boston flights
Kansas City to Portland flights
St. Louis to Bangor flights
Springfield to Portland flights
Springfield to Boston flights
Kansas City to Bangor flights
Columbia to Boston flights
Kansas City to Bar Harbor flights
Springfield to Bangor flights
Columbia to Bangor flights
Joplin to Boston flights
Columbia to Portland flights
St. Louis to Presque Isle flights

Top 5 airlines flying from St. Louis to Portland

Discover the top 5 airlines that operate flights from St. Louis to Portland. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,696,634 searches. Data last updated May 28, 2024.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$174Average$285FlexibilityNo cancel feeOn-time62%
Search Frontier flights
United AirlinesCheapest$331Average$560FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
DeltaCheapest$335Average$480FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
American AirlinesCheapest$336Average$484FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
JetBlueCheapest$474Average$494FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
Washington, D.C. to Los Angeles flights
USA to Amsterdam flights
Chicago to Hyderabad flights
Chicago to Mexico City flights
New York to Houston flights
Charlotte to Atlanta flights
Chicago to Dallas flights
Boston to Amsterdam flights
Boston to Rome flights
Los Angeles to Orlando flights
Chicago to Athens flights
St. Louis to Santiago de Querétaro flights

Search flights from St. Louis to Portland by cabin class

Find flights from St. Louis to Portland, based on your preferred cabin class, be it economy, premium economy, business, or first class.
First Class
Business Class
Prem Econ Class
Economy Class

Book a flight to one of these trending destinations

User searches for flights to these destinations increased 20% or more in the past 90 days compared to other destinations
Flights to Laayoune Hassan I
Flights to Virac
Flights to Figari-Sud Corse
Flights to Edremit/Korfez
Flights to Rhinelander Oneida County
Flights to Girona Costa Brava
Flights to Brainerd Crow Wing County
Flights to Parikia Paros
Flights to Cortez Montezuma County
Flights to Miyakojima Hirara
Flights to Zadar
Flights to Trapani Birgi
Flights to Provincetown
Flights to Oran Es Senia
Flights to Constanţa Mihail Kogalniceanu
Flights to Vava'u Lupepau'U
Flights to Urumqi
Flights to Hakodate
Flights to Naxos
Flights to Dalaman
Flights to Hyannis Barnstable
Flights to Devils Lake
Flights to Bastia Poretta
Flights to Karpathos

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from St. Louis to Portland?

Cheapflights helps you search for flights from St. Louis to Portland via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from St. Louis to Portland?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from St. Louis to Portland for you. Better yet — we are completely free to use.

Can Cheapflights find flights from St. Louis to Portland with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from St. Louis to Portland flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from St. Louis to Portland become cheaper?

Of course! You can now track prices for flights from St. Louis to Portland and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
View all available airlines