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Cheap flights from St. Louis (STL) to Helsinki (HEL) from $395

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 7/30. 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 — HEL
May 28 — Jun 41
From?
To?
Tue 5/28
Tue 6/4
1 adult, Economy
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Cheap flight deals from St. Louis to Helsinki

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Helsinki (HEL). 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 23, 2024.

Popular in

June

Cheapest in

October

Average price

$1,456

Round-trip from

$628
High demand for flights, 30% potential price rise
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Best time to find cheap flights, 51% potential price drop
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Average for round-trip flights in May 2024
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From Lambert-St Louis to Helsinki-Vantaa
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What is the cheapest day to fly round-trip from St. Louis to Helsinki?

Users have found that leaving on a Monday can be a cost-effective option. It’s possible to save up to 34% on your flight compared to booking on days when demand is much higher.

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

The best pricing can be found in the month of October. Prices to Helsinki from St. Louis average $1,072. You can even find prices in October for less than $1,072, as users have found deals to Helsinki from as low as $501. The month of June appears to be one of the more expensive times to travel to Helsinki from St. Louis. Flying in the targeted month can save you up to 42%.

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

It’s typically best to fly out from St. Louis to Helsinki in the morning. Doing so could potentially save you 22% on the flight price compared to flying at noon, which is usually more expensive.

Cheap American Airlines flights from St. Louis to Helsinki

Explore cheap flight options specifically provided by American Airlines for the route between St. Louis and Helsinki. 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 2,730,072 searches. Data last updated May 23, 2024.
Thu 10/242:05 pmSTL - HEL
1 stop12h 40mAmerican Airlines
Tue 10/2912:25 pmHEL - STL
1 stop17h 11mAmerican Airlines
Deal found 5/22$827
Thu 10/247:44 amSTL - HEL
1 stop19h 01mAmerican Airlines
Tue 10/294:55 pmHEL - STL
2 stops28h 02mAmerican Airlines
Deal found 5/22$830
Thu 10/249:56 amSTL - HEL
2 stops16h 49mAmerican Airlines
Tue 10/294:55 pmHEL - STL
2 stops28h 02mAmerican Airlines
Deal found 5/22$840
Sat 10/55:54 amSTL - HEL
1 stop20h 51mAmerican Airlines
Sat 10/1212:25 pmHEL - STL
1 stop13h 56mAmerican Airlines
Deal found 5/23$987

St. Louis to Helsinki 2024 flight deals

Discover exclusive flight deals for travel between St. Louis and Helsinki in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,730,072 searches. Data last updated May 23, 2024.
Sat 10/57:10 amSTL - HEL
2 stops23h 45mMultiple Airlines
Sat 10/1211:15 amHEL - STL
2 stops20h 20mMultiple Airlines
Deal found 5/23$727
Thu 10/242:05 pmSTL - HEL
1 stop12h 40mAmerican Airlines
Tue 10/2912:25 pmHEL - STL
1 stop17h 11mAmerican Airlines
Deal found 5/22$827
Thu 10/247:44 amSTL - HEL
1 stop19h 01mAmerican Airlines
Tue 10/294:55 pmHEL - STL
2 stops28h 02mAmerican Airlines
Deal found 5/22$830
Thu 10/249:56 amSTL - HEL
2 stops16h 49mAmerican Airlines
Tue 10/294:55 pmHEL - STL
2 stops28h 02mAmerican Airlines
Deal found 5/22$840
Sat 10/55:34 pmSTL - HEL
2 stops17h 11mLufthansa
Sat 10/126:15 pmHEL - STL
1 stop27h 15mLufthansa
Deal found 5/23$976
Sat 10/55:54 amSTL - HEL
1 stop20h 51mAmerican Airlines
Sat 10/1212:25 pmHEL - STL
1 stop13h 56mAmerican Airlines
Deal found 5/23$987
Thu 10/2412:00 pmSTL - HEL
2 stops22h 45mAir Canada
Tue 10/292:00 pmHEL - STL
3 stops27h 12mAir Canada
Deal found 5/22$2,299

One-way flights to Helsinki from St. Louis

Search for one-way flight options from St. Louis to Helsinki. 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 2,730,072 searches. Data last updated May 23, 2024.
Tue 7/3011:26 amSTL - HEL
3 stops35h 24mMultiple Airlines
Deal found 5/22$395
Thu 8/13:55 pmSTL - HEL
3 stops30h 55mMultiple Airlines
Deal found 5/22$616
Wed 7/3112:15 pmSTL - HEL
3 stops17h 45mMultiple Airlines
Deal found 5/22$686
Tue 7/305:17 amSTL - HEL
2 stops24h 58mAmerican Airlines
Deal found 5/22$721
Tue 7/301:46 pmSTL - HEL
1 stop16h 29mAmerican Airlines
Deal found 5/22$722
Wed 7/313:49 pmSTL - HEL
2 stops16h 51mAir France
Deal found 5/22$739
Thu 8/13:49 pmSTL - HEL
2 stops16h 51mAir France
Deal found 5/22$789
Thu 8/15:30 pmSTL - HEL
1 stop33h 15mAmerican Airlines
Deal found 5/22$978

Find flights from St. Louis to Helsinki within your budget

Customize your flight search to find flights from St. Louis to Helsinki 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 2,730,072 searches. Data last updated May 23, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$727 - $2,299

Route

Depart

Return

Price

Lambert-St LouisHelsinki-Vantaa

STL - HEL

STLHEL

Lambert-St Louis

Sat 10/5

2 stops23h 45m

Helsinki-Vantaa

Sat 10/12

2 stops20h 20m

$727

Lambert-St LouisHelsinki-Vantaa

STL - HEL

STLHEL

Lambert-St Louis

Thu 10/24

1 stop12h 40m

Helsinki-Vantaa

Tue 10/29

1 stop17h 11m

$827

Lambert-St LouisHelsinki-Vantaa

STL - HEL

STLHEL

Lambert-St Louis

Thu 10/24

1 stop19h 01m

Helsinki-Vantaa

Tue 10/29

2 stops28h 02m

$830

Lambert-St LouisHelsinki-Vantaa

STL - HEL

STLHEL

Lambert-St Louis

Thu 10/24

2 stops16h 49m

Helsinki-Vantaa

Tue 10/29

2 stops28h 02m

$840

Lambert-St LouisHelsinki-Vantaa

STL - HEL

STLHEL

Lambert-St Louis

Sat 10/5

2 stops17h 11m

Helsinki-Vantaa

Sat 10/12

1 stop27h 15m

$976

Lambert-St LouisHelsinki-Vantaa

STL - HEL

STLHEL

Lambert-St Louis

Sat 10/5

1 stop20h 51m

Helsinki-Vantaa

Sat 10/12

1 stop13h 56m

$987

Lambert-St LouisHelsinki-Vantaa

STL - HEL

STLHEL

Lambert-St Louis

Thu 10/24

2 stops22h 45m

Helsinki-Vantaa

Tue 10/29

3 stops27h 12m

$2,299

Flights are sorted by cheapest first

Deals found on 5/23

When is the cheapest time to fly from St. Louis to Helsinki?

Use this chart to determine the cheapest time to fly round-trip from St. Louis to Helsinki. Price data was last updated on May 19, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
Travelers seeking maximum savings on their St. Louis to Helsinki flight should consider departing on Thursday afternoons when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
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Best time to book a flight from St. Louis to Helsinki

Have a flexible travel schedule? Discover the best time to fly to Helsinki 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 Helsinki by month

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

HEL

Temperature

21.2 - 60.8 °F

Reviews of airlines servicing Helsinki

Get insights into the airlines that provide service to Helsinki. 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 Helsinki. Reviews last updated May 23, 2024.
Air France
7.6
Good
1,755 reviews
Check prices

Comfort

7.4

Food

7.2

Entertainment

7.1

Overall

7.6

Boarding

7.5

Crew

8.2

Reviews

1 / 10

Flight was full of loud children and families. No one seemed to be willing to do anything against it. At least crew could let them know that they are so loud and it is 9 pm so they could pay at least a little bit of attention to others.

Air France
7.6
Good
1,755 reviews
Air France
7.6
Good
1,755 reviews
Check prices

Comfort

7.4

Food

7.2

Entertainment

7.1

Overall

7.6

Boarding

7.5

Crew

8.2

Reviews

1 / 10

Flight was full of loud children and families. No one seemed to be willing to do anything against it. At least crew could let them know that they are so loud and it is 9 pm so they could pay at least a little bit of attention to others.

American Airlines
7.3
Good
14,395 reviews
Air France
7.6
Good
1,755 reviews
Check prices

Comfort

7.4

Food

7.2

Entertainment

7.1

Overall

7.6

Boarding

7.5

Crew

8.2

Reviews

1 / 10

Flight was full of loud children and families. No one seemed to be willing to do anything against it. At least crew could let them know that they are so loud and it is 9 pm so they could pay at least a little bit of attention to others.

Air Canada
7.0
Good
6,954 reviews
Air France
7.6
Good
1,755 reviews
Check prices

Comfort

7.4

Food

7.2

Entertainment

7.1

Overall

7.6

Boarding

7.5

Crew

8.2

Reviews

1 / 10

Flight was full of loud children and families. No one seemed to be willing to do anything against it. At least crew could let them know that they are so loud and it is 9 pm so they could pay at least a little bit of attention to others.

Lufthansa
7.0
Good
7,618 reviews
Air France
7.6
Good
1,755 reviews
Check prices

Comfort

7.4

Food

7.2

Entertainment

7.1

Overall

7.6

Boarding

7.5

Crew

8.2

Reviews

1 / 10

Flight was full of loud children and families. No one seemed to be willing to do anything against it. At least crew could let them know that they are so loud and it is 9 pm so they could pay at least a little bit of attention to others.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Helsinki. 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 Helsinki for under $800 on Cheapflights?

    Yes, there are multiple flights from St. Louis to Helsinki for under $800. The cheapest flight booked recently is on Multiple Airlines for just $727, but on average you can expect to pay $1,069.

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

    American Airlines, at $827, was found to be the cheapest airline from St. Louis to Helsinki.Alternate airlines to your destination round-trip include Lufthansa and Air Canada. These flights start at 22% lower than the current average price 3 months from now.

  • What does STL to HEL mean?

    Lambert-St Louis Airport is STL and Helsinki-Vantaa Airport is HEL. 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 Helsinki that include extra baggage allowance?

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

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

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

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

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

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

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

    Many airlines flying from St. Louis to Helsinki 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 Helsinki?

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

    The St. Louis to Helsinki flight deals you see on this page were last updated on 5/23.

  • What are the most popular airlines that fly from St. Louis to Helsinki?

    When booking a flight from St. Louis to Helsinki, you may want to consider flying on American Airlines, Finnair or British Airways as they are the most popular for this route.

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

    Currently, January is the cheapest month in which you can book a flight from St. Louis to Helsinki (average of $628). Flying from St. Louis to Helsinki in June is currently the most expensive (average of $1,322). 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

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

Kansas City to Helsinki flights

Top 7 airlines flying from St. Louis to Helsinki

Discover the top 7 airlines that operate flights from St. Louis to Helsinki. 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 2,730,072 searches. Data last updated May 23, 2024.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$507Average$1,214FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
KLMCheapest$528Average$528FlexibilityNo cancel feeOn-time75%
Search KLM flights
United AirlinesCheapest$559Average$896FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
FinnairCheapest$692Average$1,066FlexibilityNo cancel feeOn-time76%
Search Finnair flights
LufthansaCheapest$711Average$1,260FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
British AirwaysCheapest$890Average$1,473FlexibilityNo cancel feeOn-time70%
Search British Airways flights
American AirlinesCheapest$932Average$1,531FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
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Search flights from St. Louis to Helsinki by cabin class

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

Deals for St. Louis to Helsinki flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

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

Cheapflights simply makes it quick and affordable to book flights from St. Louis to Helsinki by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

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

Certainly. Search results for flights to Helsinki from St. Louis shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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

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

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