Cheap flights from Knoxville to St. Louis (TYS - STL) from $98

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 9/21. 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.
TYS — STL
Jun 2 — Jun 91

The best prices from Knoxville McGhee Tyson to Lambert-St Louis are usually found in April or January, booked 76 days in advance, depart on a Thursday or Wednesday and return on a Thursday

Cheap flight deals from Knoxville to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from Knoxville (TYS) to St. Louis (STL). 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

June

Cheapest in

April

Round-trip from

$319

One-way from

$139
High demand for flights, 28% potential price rise
Best time to find cheap flights, 25% potential price drop
From Knoxville McGhee Tyson to Lambert-St Louis
One-way flight from Knoxville McGhee Tyson to Lambert-St Louis

What is the cheapest day to fly round-trip from Knoxville to St. Louis?

Sunday flights are found to be more expensive to fly from Knoxville to St. Louis. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to St. Louis.

How far in advance should I book a flight from Knoxville to St. Louis?

Users have found that booking a flight from Knoxville to St. Louis at least 44 days early can save you up to 36% on average compared to booking a flight this week. If booking 44 days before your flight isn’t an option for you, users have found flights from Knoxville to St. Louis for as little as $267 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as $464 for flights departing within the next 3 days.

What is the cheapest month to fly from Knoxville to St. Louis?

The best pricing can be found in the month of April. Prices to St. Louis from Knoxville average $341. You can even find prices in April for less than $341, as users have found deals to St. Louis from as low as $214. The month of June appears to be one of the more expensive times to travel to St. Louis from Knoxville. Flying in the targeted month can save you up to 38%.

When is the cheapest time to fly from Knoxville to St. Louis (TYS - STL)?

A simple way to save on the total cost of your ticket is to fly from Knoxville to St. Louis at noon. If you’re flexible enough to do this you can expect to save up to 36% on your trip compared to booking a flight in the morning.

Cheap American Airlines flights from Knoxville to St. Louis

Explore cheap flight options specifically provided by American Airlines for the route between Knoxville and St. Louis. 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 Knoxville to St. Louis. Deals update often to give you more flight options matching your criteria
Sat 8/175:10 amTYS - STL
1 stop4h 09mAmerican Airlines
Sat 8/2412:45 pmSTL - TYS
1 stop6h 11mAmerican Airlines
Deal found 5/27$195
Thu 9/265:10 amTYS - STL
1 stop4h 11mAmerican Airlines
Tue 10/85:37 amSTL - TYS
1 stop3h 42mAmerican Airlines
Deal found 5/28$205
Tue 9/1011:09 amTYS - STL
1 stop5h 28mAmerican Airlines
Thu 9/129:14 amSTL - TYS
1 stop3h 53mAmerican Airlines
Deal found 5/28$207
Thu 8/155:10 amTYS - STL
1 stop4h 09mAmerican Airlines
Thu 8/227:00 amSTL - TYS
1 stop4h 14mAmerican Airlines
Deal found 5/27$215
Fri 8/95:10 amTYS - STL
1 stop4h 09mAmerican Airlines
Mon 8/125:00 amSTL - TYS
1 stop7h 39mAmerican Airlines
Deal found 5/27$217
Sat 6/86:11 pmTYS - STL
1 stop5h 21mAmerican Airlines
Wed 6/125:38 pmSTL - TYS
1 stop5h 20mAmerican Airlines
Deal found 5/28$239
Fri 9/208:26 pmTYS - STL
1 stop4h 27mAmerican Airlines
Sun 9/226:00 amSTL - TYS
1 stop3h 39mAmerican Airlines
Deal found 5/27$277
Sat 7/205:10 amTYS - STL
1 stop4h 23mAmerican Airlines
Mon 7/223:18 pmSTL - TYS
1 stop5h 03mAmerican Airlines
Deal found 5/28$280
Wed 6/197:40 pmTYS - STL
1 stop5h 23mAmerican Airlines
Thu 6/206:09 amSTL - TYS
1 stop8h 56mAmerican Airlines
Deal found 5/27$341

Cheap United Airlines flights from Knoxville to St. Louis

Explore cheap flight options specifically provided by United Airlines for the route between Knoxville and St. Louis. 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.
Some of the lowest-priced United Airlines flights we've found at this time heading from Knoxville to St. Louis. Deals frequently update to provide users with more options.
Sat 8/175:50 amTYS - STL
2 stops10h 50mUnited Airlines
Sat 8/245:20 pmSTL - TYS
1 stop4h 16mUnited Airlines
Deal found 5/27$342
Thu 8/155:50 amTYS - STL
2 stops10h 50mUnited Airlines
Thu 8/2211:10 amSTL - TYS
1 stop4h 33mUnited Airlines
Deal found 5/27$412
Thu 9/267:00 amTYS - STL
1 stop4h 07mUnited Airlines
Tue 10/811:09 amSTL - TYS
2 stops11h 31mUnited Airlines
Deal found 5/28$413
Fri 9/205:55 pmTYS - STL
2 stops17h 01mUnited Airlines
Sun 9/225:20 pmSTL - TYS
1 stop4h 16mUnited Airlines
Deal found 5/27$438
Wed 7/37:00 amTYS - STL
1 stop9h 40mUnited Airlines
Sun 7/75:30 pmSTL - TYS
1 stop4h 12mUnited Airlines
Deal found 5/27$442
Thu 6/205:50 amTYS - STL
2 stops10h 51mUnited Airlines
Sat 6/225:31 pmSTL - TYS
1 stop4h 05mUnited Airlines
Deal found 5/26$457
Wed 7/35:50 amTYS - STL
2 stops10h 50mUnited Airlines
Sun 7/75:30 pmSTL - TYS
1 stop4h 12mUnited Airlines
Deal found 5/27$497
Tue 6/187:00 amTYS - STL
1 stop6h 13mUnited Airlines
Fri 6/2111:38 amSTL - TYS
2 stops11h 05mUnited Airlines
Deal found 5/28$567
Fri 6/287:00 amTYS - STL
1 stop9h 40mUnited Airlines
Mon 7/111:25 amSTL - TYS
2 stops11h 17mUnited Airlines
Deal found 5/28$570

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

Find cheap flight options from Knoxville to St. Louis 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.
These are some of the most attractive deals on flights from Knoxville to St. Louis in 2024. Check back in a little while for more flight options.
Sat 6/86:11 pmTYS - STL
1 stop5h 21mAmerican Airlines
Wed 6/125:38 pmSTL - TYS
1 stop5h 20mAmerican Airlines
Deal found 5/28$239
Wed 5/2912:38 pmTYS - STL
1 stop3h 50mAmerican Airlines
Wed 6/55:38 pmSTL - TYS
1 stop5h 20mAmerican Airlines
Deal found 5/27$252
Sat 6/15:30 amTYS - STL
1 stop5h 58mAmerican Airlines
Tue 6/47:30 amSTL - TYS
1 stop3h 38mAmerican Airlines
Deal found 5/28$254
Sat 6/15:30 amTYS - STL
1 stop5h 58mAmerican Airlines
Mon 6/32:00 pmSTL - TYS
1 stop6h 48mAmerican Airlines
Deal found 5/28$263
Thu 6/204:26 pmTYS - STL
1 stop15h 41mFrontier
Sat 6/2212:13 pmSTL - TYS
1 stop20h 44mFrontier
Deal found 5/26$266
Fri 5/3111:00 amTYS - STL
1 stop5h 41mUnited Airlines
Sun 6/25:31 pmSTL - TYS
1 stop4h 05mUnited Airlines
Deal found 5/27$324
Mon 6/177:44 pmTYS - STL
2 stops18h 16mMultiple Airlines
Wed 6/1912:00 pmSTL - TYS
3 stops22h 27mMultiple Airlines
Deal found 5/28$330
Wed 6/197:40 pmTYS - STL
1 stop5h 23mAmerican Airlines
Thu 6/206:09 amSTL - TYS
1 stop8h 56mAmerican Airlines
Deal found 5/27$341
Mon 6/1711:21 amTYS - STL
3 stops28h 02mMultiple Airlines
Wed 6/1912:00 pmSTL - TYS
3 stops22h 27mMultiple Airlines
Deal found 5/28$369

Knoxville to St. Louis 2024 flight deals

Discover exclusive flight deals for travel between Knoxville and St. Louis 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.
These are some of the most attractive deals on flights from Knoxville to St. Louis in 2024. Check back in a little while for more flight options.
Sat 8/175:10 amTYS - STL
1 stop4h 09mAmerican Airlines
Sat 8/2412:45 pmSTL - TYS
1 stop6h 11mAmerican Airlines
Deal found 5/27$195
Thu 9/265:10 amTYS - STL
1 stop4h 11mAmerican Airlines
Tue 10/85:37 amSTL - TYS
1 stop3h 42mAmerican Airlines
Deal found 5/28$205
Tue 9/1011:09 amTYS - STL
1 stop5h 28mAmerican Airlines
Thu 9/129:14 amSTL - TYS
1 stop3h 53mAmerican Airlines
Deal found 5/28$207
Sat 8/105:25 amTYS - STL
1 stop4h 38mDelta
Sun 8/117:06 pmSTL - TYS
1 stop3h 45mDelta
Deal found 5/27$213
Thu 8/155:10 amTYS - STL
1 stop4h 09mAmerican Airlines
Thu 8/227:00 amSTL - TYS
1 stop4h 14mAmerican Airlines
Deal found 5/27$215
Fri 8/95:10 amTYS - STL
1 stop4h 09mAmerican Airlines
Mon 8/125:00 amSTL - TYS
1 stop7h 39mAmerican Airlines
Deal found 5/27$217
Thu 8/85:25 amTYS - STL
1 stop4h 37mDelta
Sun 8/115:26 pmSTL - TYS
1 stop5h 25mDelta
Deal found 5/28$223
Thu 7/185:25 amTYS - STL
1 stop4h 37mDelta
Mon 7/227:01 pmSTL - TYS
1 stop3h 50mDelta
Deal found 5/28$228
Sat 6/86:11 pmTYS - STL
1 stop5h 21mAmerican Airlines
Wed 6/125:38 pmSTL - TYS
1 stop5h 20mAmerican Airlines
Deal found 5/28$239

Knoxville to St. Louis flights leaving soon

Find last-minute flight options from Knoxville to St. Louis 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.
Have a look at some of the flights available from Knoxville to St. Louis departing last-minute. Users should be sure to double check the price, date, and time of their last-minute flight.
Tue 6/410:00 amTYS - STL
3 stops28h 00mMultiple Airlines
Wed 6/54:45 pmSTL - TYS
3 stops24h 44mMultiple Airlines
Deal found 5/27$542
Mon 6/36:00 amTYS - STL
3 stops30h 30mMultiple Airlines
Wed 6/512:15 pmSTL - TYS
3 stops29h 14mMultiple Airlines
Deal found 5/28$589
Tue 6/410:00 amTYS - STL
2 stops28h 05mMultiple Airlines
Wed 6/54:45 pmSTL - TYS
3 stops24h 44mMultiple Airlines
Deal found 5/27$628
Tue 6/45:40 pmTYS - STL
1 stop5h 07mUnited Airlines
Wed 6/59:05 amSTL - TYS
1 stop12h 25mUnited Airlines
Deal found 5/27$727
Tue 6/43:00 pmTYS - STL
1 stop5h 42mUnited Airlines
Wed 6/59:05 amSTL - TYS
2 stops13h 23mUnited Airlines
Deal found 5/27$732
Mon 6/37:46 amTYS - STL
1 stop6h 22mDelta
Wed 6/510:10 amSTL - TYS
1 stop3h 34mDelta
Deal found 5/28$748
Sun 6/27:00 amTYS - STL
1 stop4h 08mUnited Airlines
Wed 6/59:05 amSTL - TYS
1 stop12h 25mUnited Airlines
Deal found 5/28$847
Mon 6/37:18 pmTYS - STL
1 stop17h 35mAmerican Airlines
Wed 6/55:15 amSTL - TYS
1 stop5h 59mAmerican Airlines
Deal found 5/28$850
Sun 6/27:00 amTYS - STL
1 stop4h 08mUnited Airlines
Wed 6/59:05 amSTL - TYS
2 stops13h 23mUnited Airlines
Deal found 5/28$852

One-way flights to St. Louis from Knoxville

Search for one-way flight options from Knoxville to St. Louis. 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.
If you're seeking multiple options on one-way flights from Knoxville to St. Louis, be sure to check out these deals, which are updated often. For those needing a return trip from Knoxville, there is a search form available above.
Sat 9/214:10 pmTYS - STL
1 stop4h 20mAmerican Airlines
Deal found 5/27$98
Mon 7/154:49 pmTYS - STL
2 stops18h 35mMultiple Airlines
Deal found 5/27$134
Mon 7/1510:40 pmTYS - STL
1 stop17h 07mFrontier
Deal found 5/27$139
Mon 6/107:10 pmTYS - STL
2 stops17h 55mMultiple Airlines
Deal found 5/28$152
Sat 6/83:57 pmTYS - STL
1 stop5h 59mAmerican Airlines
Deal found 5/27$166
Mon 7/158:10 amTYS - STL
3 stops26h 16mMultiple Airlines
Deal found 5/27$179
Mon 6/106:00 amTYS - STL
3 stops30h 30mMultiple Airlines
Deal found 5/28$194
Sat 9/212:52 pmTYS - STL
2 stops8h 56mAmerican Airlines
Deal found 5/27$259
Sat 6/87:10 amTYS - STL
2 stops11h 18mMultiple Airlines
Deal found 5/27$289

Find flights from Knoxville to St. Louis within your budget

Customize your flight search to find flights from Knoxville to St. Louis 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

$195 - $342

Route

Depart

Return

Price

Knoxville McGhee TysonLambert-St Louis

TYS - STL

TYSSTL

Knoxville McGhee Tyson

Sat 8/17

1 stop4h 09m

Lambert-St Louis

Sat 8/24

1 stop6h 11m

$195

Knoxville McGhee TysonLambert-St Louis

TYS - STL

TYSSTL

Knoxville McGhee Tyson

Thu 9/26

1 stop4h 11m

Lambert-St Louis

Tue 10/8

1 stop3h 42m

$205

Knoxville McGhee TysonLambert-St Louis

TYS - STL

TYSSTL

Knoxville McGhee Tyson

Tue 9/10

1 stop5h 28m

Lambert-St Louis

Thu 9/12

1 stop3h 53m

$207

Knoxville McGhee TysonLambert-St Louis

TYS - STL

TYSSTL

Knoxville McGhee Tyson

Sat 8/10

1 stop4h 38m

Lambert-St Louis

Sun 8/11

1 stop3h 45m

$213

Knoxville McGhee TysonLambert-St Louis

TYS - STL

TYSSTL

Knoxville McGhee Tyson

Fri 6/28

1 stop4h 44m

Lambert-St Louis

Mon 7/1

1 stop4h 16m

$218

Knoxville McGhee TysonLambert-St Louis

TYS - STL

TYSSTL

Knoxville McGhee Tyson

Thu 8/8

1 stop4h 37m

Lambert-St Louis

Sun 8/11

1 stop5h 25m

$223

Knoxville McGhee TysonLambert-St Louis

TYS - STL

TYSSTL

Knoxville McGhee Tyson

Thu 6/20

1 stop15h 41m

Lambert-St Louis

Sat 6/22

1 stop20h 44m

$266

Knoxville McGhee TysonLambert-St Louis

TYS - STL

TYSSTL

Knoxville McGhee Tyson

Sat 7/20

1 stop7h 49m

Lambert-St Louis

Mon 7/22

2 stops10h 18m

$269

Knoxville McGhee TysonLambert-St Louis

TYS - STL

TYSSTL

Knoxville McGhee Tyson

Sat 8/17

2 stops10h 50m

Lambert-St Louis

Sat 8/24

1 stop4h 16m

$342

Flights are sorted by cheapest first

Deals found on 5/27

When is the best time to book a flight from Knoxville to St. Louis?

Use this chart to determine the optimal time to book a round-trip flight from Knoxville to St. Louis. Price data was last updated on May 24, 2024.
The price you pay for your flight from Knoxville to St. Louis may vary depending on when you book. For the best chance of a lower fare, look to book 74 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 Knoxville to St. Louis?

Use this chart to determine the cheapest time to fly round-trip from Knoxville to St. Louis. Price data was last updated on May 26, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
Travelers seeking maximum savings on their Knoxville to St. Louis flight should consider departing on Wednesday afternoons when fares are most often at their lowest. Monday mornings 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 Knoxville to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Knoxville 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 St. Louis by month

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

STL

Temperature

32 - 80.6 °F

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to St. Louis. 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 St. Louis. Reviews last updated May 28, 2024.
Peruse reviews from past customers who have flown with American Airlines, United Airlines and Delta from Knoxville to St. Louis to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
8.0
Very good
10,476 reviews

Entertainment

8.0

Crew

8.6

Boarding

8.2

Overall

8.0

Comfort

7.9

Food

7.4

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.

8.0
Very good
10,476 reviews
8.0
Very good
10,476 reviews

Entertainment

8.0

Crew

8.6

Boarding

8.2

Overall

8.0

Comfort

7.9

Food

7.4

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.

7.4
Good
10,799 reviews
8.0
Very good
10,476 reviews

Entertainment

8.0

Crew

8.6

Boarding

8.2

Overall

8.0

Comfort

7.9

Food

7.4

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.

7.3
Good
14,316 reviews
8.0
Very good
10,476 reviews

Entertainment

8.0

Crew

8.6

Boarding

8.2

Overall

8.0

Comfort

7.9

Food

7.4

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.

7.0
Good
7,594 reviews
8.0
Very good
10,476 reviews

Entertainment

8.0

Crew

8.6

Boarding

8.2

Overall

8.0

Comfort

7.9

Food

7.4

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.

6.3
Okay
4,016 reviews
8.0
Very good
10,476 reviews

Entertainment

8.0

Crew

8.6

Boarding

8.2

Overall

8.0

Comfort

7.9

Food

7.4

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 Knoxville to St. Louis. 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 Knoxville to St. Louis for under $200 on Cheapflights?

    Yes, there are multiple flights from Knoxville to St. Louis for under $200. The cheapest flight booked recently is on American Airlines for just $195, but on average you can expect to pay $258.

  • Are there last-minute flights available from Knoxville to St. Louis for under $600?

    There are currently 11+ open flights from Knoxville to St. Louis within the next 7 days for less than $600.

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

    Cheapflights users have booked flights from Knoxville to St. Louis round-trip from $195. Other airlines that can offer you cheap pricing are Delta, from $213, and Frontier, from $266. These flights start at 42% lower than the current average price 3 months from now.

  • What are the cheapest airlines to fly from Knoxville to St. Louis one-way?

    For one-way options, check prices for American Airlines. According to our data, you can fly for as low as $98. Users have also found prices from $139 and $2,564 on Frontier and Lufthansa, respectively.

  • What does TYS to STL mean?

    This is defined as Knoxville McGhee Tyson Airport (TYS) and Lambert-St Louis Airport (STL). Codes like Lambert-St Louis Airport are often used to just call airports uniquely.

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

    The amount of baggage you can bring on your Knoxville to St. Louis 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 Knoxville to St. Louis with specific airlines?

    Yes, Cheapflights allows you to browse and filter Knoxville to St. Louis 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 Knoxville to St. Louis that include hotel bookings?

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

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

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

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

    Yes. Cheapflights offers flight deals from Knoxville to St. Louis 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 Knoxville to St. Louis that allow pets onboard?

    Many airlines flying from Knoxville to St. Louis 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 Knoxville to St. Louis?

    Yes, you can often find last-minute deals on Knoxville to St. Louis 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 Knoxville to St. Louis flight deals updated?

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

  • When is the best time to book a flight from Knoxville to St. Louis?

    Currently, September is the cheapest month in which you can book a flight from Knoxville to St. Louis (average of $319). Flying from Knoxville to St. Louis in July is currently the most expensive (average of $366). 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.

Top 2 airlines flying from Knoxville to St. Louis

Discover the top 2 airlines that operate flights from Knoxville to St. Louis. 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
American AirlinesCheapest$206Average$296FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
DeltaCheapest$230Average$376FlexibilityNo cancel feeOn-timeN/A
Search Delta flights

Search flights from Knoxville to St. Louis by cabin class

Find flights from Knoxville to St. Louis, based on your preferred cabin class, be it economy, premium economy, business, or first class.

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 Knoxville to St. Louis?

Cheapflights helps you search for flights from Knoxville to St. Louis 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 Knoxville to St. Louis?

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

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

Need flexible booking options for your flight to St. Louis from Knoxville? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

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

Of course! You can now track prices for flights from Knoxville to St. Louis 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.