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 3/3. Fares are subject to change and may not be available on all flights or dates of travel.
STL — HEL
Mar 7 — Mar 141
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Cheap 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 February 5, 2026.

This Finnair deal was found by Cheapflights users on 2/3. 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.
Tue 3/311:46 am
STL
-
HEL
1 stop14h 59m
Finnair
Tue 3/1012:30 pm
HEL
-
STL
1 stop13h 59m
Finnair
Deal found 2/3$484
This American Airlines deal was found by Cheapflights users on 2/3. 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.
Tue 3/310:37 am
STL
-
HEL
2 stops16h 08m
American Airlines
Tue 3/1012:30 pm
HEL
-
STL
1 stop17h 52m
American Airlines
Deal found 2/3$489
This Finnair deal was found by Cheapflights users on 2/3. 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.
Thu 3/511:41 am
STL
-
HEL
1 stop18h 14m
Multiple Airlines
Thu 3/124:50 pm
HEL
-
STL
1 stop25h 21m
Multiple Airlines
Deal found 2/3$490
This United Airlines deal was found by Cheapflights users on 2/2. 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.
Tue 3/39:55 am
STL
-
HEL
2 stops24h 55m
United Airlines
Tue 3/171:55 pm
HEL
-
STL
2 stops32h 34m
United Airlines
Deal found 2/2$499
This Delta deal was found by Cheapflights users on 2/2. 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.
Mon 3/91:39 pm
STL
-
HEL
2 stops19h 46m
Delta
Thu 3/197:00 am
HEL
-
STL
2 stops33h 05m
Delta
Deal found 2/2$500
This United Airlines deal was found by Cheapflights users on 2/1. 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.
Tue 3/107:00 pm
STL
-
HEL
2 stops16h 50m
United Airlines
Mon 3/161:55 pm
HEL
-
STL
2 stops31h 54m
United Airlines
Deal found 2/1$501
This Delta deal was found by Cheapflights users on 2/2. 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.
Wed 3/410:14 am
STL
-
HEL
2 stops23h 11m
Delta
Thu 3/197:00 am
HEL
-
STL
2 stops33h 05m
Delta
Deal found 2/2$506
This United Airlines deal was found by Cheapflights users on 2/2. 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.
Thu 3/57:41 am
STL
-
HEL
2 stops21h 39m
United Airlines
Tue 3/171:55 pm
HEL
-
STL
2 stops32h 34m
United Airlines
Deal found 2/2$512
This United Airlines deal was found by Cheapflights users on 2/1. 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.
Thu 3/57:41 am
STL
-
HEL
2 stops21h 39m
United Airlines
Wed 3/186:55 am
HEL
-
STL
2 stops21h 12m
United Airlines
Deal found 2/1$513
This Air Canada deal was found by Cheapflights users on 2/2. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/84:05 pm
STL
-
HEL
2 stops38h 05m
Air Canada
Mon 3/166:55 am
HEL
-
STL
2 stops39h 34m
Air Canada
Deal found 2/2$516
This KAYAK deal was found by Cheapflights users on 2/2. 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.
Sun 3/87:00 pm
STL
-
HEL
2 stops23h 20m
Lufthansa
Wed 3/186:55 am
HEL
-
STL
2 stops18h 05m
Lufthansa
Deal found 2/2$518
This KAYAK deal was found by Cheapflights users on 2/2. 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.
Sun 3/87:00 pm
STL
-
HEL
2 stops23h 20m
Lufthansa
Tue 3/1712:45 pm
HEL
-
STL
2 stops17h 14m
Lufthansa
Deal found 2/2$520

Find 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 February 5, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$484
(Finnair)

Popular in

May

Cheapest in

February

Average price

$554
Provider with most accurate pricing for Lambert-St Louis-Helsinki-Vantaa flight deals.
Provider most trusted by Cheapflights users for Lambert-St Louis-Helsinki-Vantaa flights.
From Lambert-St Louis to Finland
Highest demand for flights based on searches. 20% potential increase in price ($225 potential increase over avg. RT price).
Cheapest flight prices on average. 6% potential price decrease ($58 potential savings vs. average RT price).
Average for round-trip flights in February 2026

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 February 5, 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

Tue 3/3

11:46 am-10:45 am

1 stop14h 59m

Helsinki-Vantaa

Tue 3/10

12:30 pm-7:29 pm

1 stop13h 59m

$484

St. LouisHelsinki

STL - HEL

STLHEL

Lambert-St Louis

Mon 3/9

5:55 pm-6:50 pm

2 stops17h 55m

Helsinki-Vantaa

Tue 3/17

1:55 pm-3:29 pm

2 stops32h 34m

$499

St. LouisHelsinki

STL - HEL

STLHEL

Lambert-St Louis

Tue 3/3

9:55 am-6:50 pm

2 stops24h 55m

Helsinki-Vantaa

Tue 3/17

1:55 pm-3:29 pm

2 stops32h 34m

$499

St. LouisHelsinki

STL - HEL

STLHEL

Lambert-St Louis

Tue 3/3

5:50 pm-4:25 pm

2 stops14h 35m

Helsinki-Vantaa

Thu 3/19

7:00 am-9:05 am

2 stops33h 05m

$500

St. LouisHelsinki

STL - HEL

STLHEL

Lambert-St Louis

Mon 3/9

7:00 pm-1:20 am

2 stops23h 20m

Helsinki-Vantaa

Mon 3/16

1:55 pm-6:00 pm

2 stops35h 05m

$500

St. LouisHelsinki

STL - HEL

STLHEL

Lambert-St Louis

Tue 3/3

5:50 pm-4:25 pm

2 stops14h 35m

Helsinki-Vantaa

Wed 3/18

7:00 am-5:53 pm

2 stops17h 53m

$500

St. LouisHelsinki

STL - HEL

STLHEL

Lambert-St Louis

Wed 4/1

8:21 am-6:55 pm

2 stops26h 34m

Helsinki-Vantaa

Wed 4/8

6:35 am-9:08 pm

2 stops22h 33m

$500

St. LouisHelsinki

STL - HEL

STLHEL

Lambert-St Louis

Mon 3/9

1:39 pm-4:25 pm

2 stops19h 46m

Helsinki-Vantaa

Wed 3/18

7:00 am-9:06 pm

2 stops21h 06m

$500

St. LouisHelsinki

STL - HEL

STLHEL

Lambert-St Louis

Mon 3/9

1:39 pm-4:25 pm

2 stops19h 46m

Helsinki-Vantaa

Thu 3/19

7:00 am-9:05 am

2 stops33h 05m

$500

St. LouisHelsinki

STL - HEL

STLHEL

Lambert-St Louis

Tue 3/10

7:00 pm-6:50 pm

2 stops16h 50m

Helsinki-Vantaa

Tue 3/17

7:05 am-9:07 pm

2 stops21h 02m

$501

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/3

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 February 5, 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.

Comfort

7.2

Overall

7.2

Crew

8.0

Boarding

7.5

Food

6.4

Entertainment

6.9

Reviews

1 / 20
2.0
Mediocre

Susie,Jan 2026

CLT - TPA

This flight was delayed 3 or 4 times. We had boarded the plane, sat on plane for a good 30 minutes, then we had to board the aircraft, walk to a different gate, wait and then board another aircraft. We arrived in Tampa 4 hours later than the original booking. I feel there should have been some sort of compensation especially for the advantage members.

Comfort

7.2

Overall

7.2

Crew

8.0

Boarding

7.5

Food

6.4

Entertainment

6.9

Reviews

1 / 20
2.0
Mediocre

Susie,Jan 2026

CLT - TPA

This flight was delayed 3 or 4 times. We had boarded the plane, sat on plane for a good 30 minutes, then we had to board the aircraft, walk to a different gate, wait and then board another aircraft. We arrived in Tampa 4 hours later than the original booking. I feel there should have been some sort of compensation especially for the advantage members.

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 Finnair, United Airlines, and Delta fly from St. Louis to Finland in about 14h 35m. 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

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Alternative routes for St. Louis to Finland

See prices for flight routes from nearby airports that may be better suited for you.

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 February 5, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$484Average$668FlexibilityNo cancel feeOn-time71%

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