HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Finland

$484+ Cheap flights from St. Louis (STL) to Finland

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/11. Fares are subject to change and may not be available on all flights or dates of travel.
STL — HEL
feb. 13 — feb. 201
vie. 2/13
vie. 2/20
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from St. Louis to Finland with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from St. Louis to Finland

Keep the following information in mind while searching for St. Louis to Finland flight deals. Data was last updated enero 14, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$484
(Finnair)

Popular in

May

Cheapest in

February
Provider with most accurate pricing for Lambert-St Louis-Helsinki-Vantaa flight deals.
Search Deals
Provider most trusted by Cheapflights users for Lambert-St Louis-Helsinki-Vantaa flights.
Search Deals
From Lambert-St Louis to Finland
Search Deals
Highest demand for flights based on searches. 18% potential increase in price ($213 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($57 potential savings vs. average RT price).
Search Deals

Find flight deals from St. Louis to Finland

Cheapest flights from St. Louis to Finland
Explore the most affordable flight options available from St. Louis to Finland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on enero 14, 2026.

This Finnair deal was found by Cheapflights users on 1/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 4/112:29 pm
STL
-
HEL
1 stop15h 46m
Multiple Airlines
mié. 4/224:25 pm
HEL
-
STL
1 stop15h 23m
Multiple Airlines
Deal found 1/11$484
This American Airlines deal was found by Cheapflights users on 1/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 2/97:15 am
STL
-
HEL
1 stop19h 30m
American Airlines
lun. 2/1612:30 pm
HEL
-
STL
1 stop28h 25m
American Airlines
Deal found 1/12$489
This United Airlines deal was found by Cheapflights users on 1/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 2/96:40 pm
STL
-
HEL
2 stops16h 10m
United Airlines
lun. 2/166:55 am
HEL
-
STL
2 stops24h 04m
United Airlines
Deal found 1/12$490
This American Airlines deal was found by Cheapflights users on 1/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 4/118:53 am
STL
-
HEL
1 stop21h 22m
American Airlines
mié. 4/228:00 am
HEL
-
STL
2 stops17h 12m
American Airlines
Deal found 1/11$528
This Delta deal was found by Cheapflights users on 1/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 4/1110:50 am
STL
-
HEL
2 stops21h 50m
Delta
mié. 4/227:00 am
HEL
-
STL
2 stops21h 38m
Delta
Deal found 1/11$534
This American Airlines deal was found by Cheapflights users on 1/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 3/55:12 am
STL
-
HEL
1 stop21h 33m
American Airlines
dom. 3/1512:30 pm
HEL
-
STL
1 stop13h 59m
American Airlines
Deal found 1/11$624
This oojo deal was found by Cheapflights users on 1/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/19:35 pm
STL
-
HEL
2 stops17h 20m
British Airways
sáb. 9/1912:35 pm
HEL
-
STL
1 stop17h 50m
British Airways
Deal found 1/13$626
This Gotogate deal was found by Cheapflights users on 1/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/112:10 pm
STL
-
HEL
2 stops17h 00m
Multiple Airlines
sáb. 9/197:40 pm
HEL
-
STL
2 stops25h 45m
Multiple Airlines
Deal found 1/13$651
This KAYAK deal was found by Cheapflights users on 1/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/13:30 pm
STL
-
HEL
1 stop17h 30m
Lufthansa
sáb. 9/196:15 pm
HEL
-
STL
1 stop27h 10m
Lufthansa
Deal found 1/13$672
This Mytrip deal was found by Cheapflights users on 1/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 3/54:05 pm
STL
-
HEL
2 stops25h 15m
Multiple Airlines
dom. 3/157:35 pm
HEL
-
STL
2 stops35h 16m
Multiple Airlines
Deal found 1/11$702

Cheapflights Fare Finder

 
Customize your flight search to find flights from St. Louis to Finland 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 2,558,603 searches. Data last updated enero 14, 2026.
Use the filters below to find and compare flights from St. Louis to Finland that are best for you.

Fly from

St. Louis

Fly to

Finland

Route

Depart

Return

Price

St. LouisHelsinki

STL - HEL

STLHEL

Lambert-St Louis

sáb. 4/11

2:29 pm-2:15 pm

1 stop15h 46m

Helsinki-Vantaa

mié. 4/22

4:25 pm-11:48 pm

1 stop15h 23m

$484

St. LouisHelsinki

STL - HEL

STLHEL

Lambert-St Louis

lun. 2/9

7:15 am-10:45 am

1 stop19h 30m

Helsinki-Vantaa

lun. 2/16

12:30 pm-8:55 am

1 stop28h 25m

$489

St. LouisHelsinki

STL - HEL

STLHEL

Lambert-St Louis

lun. 2/9

6:40 pm-6:50 pm

2 stops16h 10m

Helsinki-Vantaa

lun. 2/16

6:55 am-10:59 pm

2 stops24h 04m

$490

St. LouisHelsinki

STL - HEL

STLHEL

Lambert-St Louis

sáb. 4/11

8:53 am-2:15 pm

1 stop21h 22m

Helsinki-Vantaa

mié. 4/22

8:00 am-5:12 pm

2 stops17h 12m

$528

St. LouisHelsinki

STL - HEL

STLHEL

Lambert-St Louis

sáb. 4/11

10:50 am-4:40 pm

2 stops21h 50m

Helsinki-Vantaa

mié. 4/22

7:00 am-8:38 pm

2 stops21h 38m

$534

St. LouisHelsinki

STL - HEL

STLHEL

Lambert-St Louis

jue. 3/5

5:12 am-10:45 am

1 stop21h 33m

Helsinki-Vantaa

dom. 3/15

12:30 pm-7:29 pm

1 stop13h 59m

$624

St. LouisHelsinki

STL - HEL

STLHEL

Lambert-St Louis

jue. 3/5

4:05 pm-1:20 am

2 stops25h 15m

Helsinki-Vantaa

dom. 3/15

7:35 pm-11:51 pm

2 stops35h 16m

$702

St. LouisHelsinki

STL - HEL

STLHEL

Lambert-St Louis

mié. 7/1

9:35 pm-9:00 pm

1 stop15h 25m

Helsinki-Vantaa

mié. 7/15

8:00 am-7:46 pm

2 stops19h 46m

$881

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/11

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

Have a flexible travel schedule? Discover the best time to fly to Finland 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.

Cheapflights Insights

Everything you need to know about your flight from St. Louis to Finland
No data available for this route at this time. Please check back soon.

Reviews of airlines servicing Finland

Get insights into the airlines that provide service to Finland. 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 Finland. Reviews last updated enero 14, 2026.
Peruse reviews from past customers who have flown with American Airlines from St. Louis to Finland 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.
American Airlines
7.2
Good
11,119 reviews

Boarding

7.5

Food

6.4

Entertainment

6.9

Overall

7.2

Crew

8.0

Comfort

7.2

Reviews

1 / 20
4.0
Okay

Susie,Jan 2026

TPA - CLT

I was sitting at the back of the plane and the flight attendants were so loud, talking to each other and laughing! I thought they were having a party back there.
American Airlines
7.2
Good
11,119 reviews
American Airlines
7.2
Good
11,119 reviews

Boarding

7.5

Food

6.4

Entertainment

6.9

Overall

7.2

Crew

8.0

Comfort

7.2

Reviews

1 / 20
4.0
Okay

Susie,Jan 2026

TPA - CLT

I was sitting at the back of the plane and the flight attendants were so loud, talking to each other and laughing! I thought they were having a party back there.

Related info for your journey

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

  • What airport do you fly from for flights from St. Louis to Finland?

    For a flight from St. Louis to Finland, you will be flying from Lambert-St Louis. Lambert-St Louis (STL) is just 12.7 mi from the center of the city.

  • How long is the flight from St. Louis to Finland?

    Airlines like American Airlines and United Airlines fly from St. Louis to Finland in about 16h 10m. The time it takes to get you to your destination can typically vary by up to 3h 20m. The distance from St. Louis to Finland is about 4678 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

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

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

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

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

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

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 Finland

See prices for flight routes from nearby airports that may be better suited for you.
St. Louis to Heathrow flights
Kansas City to Dublin flights
Kansas City to Heathrow flights
St. Louis to Leonardo da Vinci/Fiumicino flights
St. Louis to Dublin flights
St. Louis to Gatwick flights
Kansas City to Leonardo da Vinci/Fiumicino flights
Kansas City to Charles de Gaulle flights
St. Louis to Charles de Gaulle flights
Kansas City to Gatwick flights
St. Louis to Frankfurt flights
St. Louis to Istanbul flights
St. Louis to Barcelona-El Prat flights
St. Louis to Orly flights
St. Louis to London City flights
St. Louis to Malpensa flights
St. Louis to Athens flights
Kansas City to Athens flights
Kansas City to Barcelona-El Prat flights
St. Louis to Linate flights
Kansas City to London City flights
St. Louis to Edinburgh flights
St. Louis to Stansted flights
Kansas City to Stansted flights
Kansas City to Madrid flights
St. Louis to Amsterdam flights
Kansas City to Vicenza flights
Kansas City to Edinburgh flights
St. Louis to Zurich flights
Kansas City to Orly flights
St. Louis to Lisbon flights
Kansas City to Lisbon flights
Kansas City to Frankfurt flights
Springfield to Heathrow flights
St. Louis to Madrid flights
St. Louis to Frederic Chopin flights
Kansas City to Amsterdam flights
St. Louis to Sarajevo flights
St. Louis to Bruxelles-National flights
St. Louis to Keflavik Intl flights
St. Louis to Sabiha Gokcen flights
St. Louis to Glasgow Intl flights
St. Louis to Porto flights
Kansas City to Oslo Gardermoen flights
Kansas City to Prague flights
St. Louis to Florence flights
Kansas City to Frederic Chopin flights
Kansas City to Zurich flights
St. Louis to Vicenza flights
St. Louis to Naples flights

Top airline flying from St. Louis to Finland

Discover the top airline that operate flights from St. Louis to Finland. 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 2,558,603 searches. Data last updated enero 14, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$490Average$764FlexibilityNo cancel feeOn-time71%

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.