$699+ Cheap flights from St. Louis (STL) to Helsinki (HEL)
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 11/9. Fares are subject to change and may not be available on all flights or dates of travel.
STL — HEL
May 1 — May 81
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from St. Louis to Helsinki 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 Helsinki
Cheapest
Best
Last-minute
One-way
Cheapest flights from St. Louis to HelsinkiExplore the most affordable flight options available from St. Louis to Helsinki. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 1, 2026.
Explore the most affordable flight options available from St. Louis to Helsinki. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 1, 2026.
This Justfly.com deal was found by Cheapflights users on 3/31. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/91:30 pm
STL
- HEL
2 stops17h 55m
Scandinavian Airlines
Wed 11/1811:20 am
HEL
- STL
2 stops20h 19m
Scandinavian Airlines
Deal found 3/31![Scandinavian Airlines logo]()
$699
This Iberia deal was found by Cheapflights users on 3/31. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/109:38 am
STL
- HEL
1 stop17h 32m
Multiple Airlines
Tue 11/1712:30 pm
HEL
- STL
1 stop15h 00m
Multiple Airlines
Deal found 3/31![Multiple Airlines logo]()
$727
This KAYAK deal was found by Cheapflights users on 3/31. 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.
Fri 11/131:30 pm
STL
- HEL
2 stops37h 10m
Scandinavian Airlines
Tue 11/174:05 pm
HEL
- STL
2 stops39h 34m
Scandinavian Airlines
Deal found 3/31![Scandinavian Airlines logo]()
$733
This KAYAK deal was found by Cheapflights users on 3/31. 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.
Tue 11/1011:45 am
STL
- HEL
2 stops23h 05m
Lufthansa
Wed 11/186:55 am
HEL
- STL
1 stop15h 00m
Lufthansa
Deal found 3/31![Lufthansa logo]()
$735
This Justfly.com deal was found by Cheapflights users on 3/31. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/113:50 pm
STL
- HEL
1 stop16h 40m
Lufthansa
Wed 11/186:55 am
HEL
- STL
1 stop15h 00m
Lufthansa
Deal found 3/31![Lufthansa logo]()
$736
This Delta deal was found by Cheapflights users on 3/31. 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.
Sun 11/87:30 am
STL
- HEL
2 stops24h 55m
Delta
Mon 11/162:05 pm
HEL
- STL
2 stops38h 44m
Delta
Deal found 3/31![Delta logo]()
$739
This United Airlines deal was found by Cheapflights users on 3/31. 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.
Mon 11/95:18 pm
STL
- HEL
2 stops17h 32m
United Airlines
Fri 11/206:50 am
HEL
- STL
2 stops23h 16m
United Airlines
Deal found 3/31![United Airlines logo]()
$742
This Delta deal was found by Cheapflights users on 3/31. 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 11/91:30 pm
STL
- HEL
2 stops15h 40m
Delta
Thu 11/197:00 am
HEL
- STL
2 stops17h 50m
Delta
Deal found 3/31![Delta logo]()
$743
This Delta deal was found by Cheapflights users on 3/31. 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.
Sat 11/77:05 pm
STL
- HEL
2 stops37h 20m
Delta
Wed 11/182:05 pm
HEL
- STL
2 stops17h 34m
Delta
Deal found 3/31![Delta logo]()
$744
This KAYAK deal was found by Cheapflights users on 3/31. 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.
Mon 11/95:20 pm
STL
- HEL
2 stops41h 30m
Lufthansa
Wed 11/186:55 am
HEL
- STL
1 stop15h 00m
Lufthansa
Deal found 3/31![Lufthansa logo]()
$746
This United Airlines deal was found by Cheapflights users on 3/30. 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.
Mon 11/910:23 am
STL
- HEL
2 stops24h 27m
United Airlines
Thu 11/1212:45 pm
HEL
- STL
2 stops27h 52m
United Airlines
Deal found 3/30![United Airlines logo]()
$748
Best flights from St. Louis to HelsinkiDiscover carefully curated flight deals from St. Louis to Helsinki that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 1, 2026.
Discover carefully curated flight deals from St. Louis to Helsinki that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 1, 2026.
This Delta deal was found by Cheapflights users on 3/28. 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.
Tue 5/1211:25 am
STL
- HEL
2 stops21h 15m
Delta
Tue 5/197:15 am
HEL
- STL
2 stops17h 50m
Delta
Deal found 3/28![Delta logo]()
$848
This Expedia deal was found by Cheapflights users on 3/27. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/111:59 pm
STL
- HEL
2 stops18h 41m
Air France
Mon 5/185:40 pm
HEL
- STL
2 stops30h 30m
Air France
Deal found 3/27![Air France logo]()
$858
This Iberia deal was found by Cheapflights users on 3/28. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/1212:27 pm
STL
- HEL
1 stop14h 18m
Multiple Airlines
Tue 5/194:40 pm
HEL
- STL
2 stops34h 50m
Multiple Airlines
Deal found 3/28![Multiple Airlines logo]()
$875
This KLM deal was found by Cheapflights users on 3/30. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/1511:42 am
STL
- HEL
2 stops17h 23m
KLM
Sun 4/197:00 am
HEL
- STL
2 stops17h 42m
KLM
Deal found 3/30![KLM logo]()
$992
This Finnair deal was found by Cheapflights users on 3/30. 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 5/1412:27 pm
STL
- HEL
2 stops18h 48m
Finnair
Thu 5/214:25 pm
HEL
- STL
1 stop15h 29m
Finnair
Deal found 3/30![Finnair logo]()
$1,044
This American Airlines deal was found by Cheapflights users on 3/29. 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.
Thu 8/65:40 am
STL
- HEL
1 stop21h 05m
American Airlines
Wed 8/1212:30 pm
HEL
- STL
2 stops19h 12m
American Airlines
Deal found 3/29![American Airlines logo]()
$1,068
This Scandinavian Airlines deal was found by Cheapflights users on 3/30. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/141:27 pm
STL
- HEL
2 stops28h 03m
Scandinavian Airlines
Thu 5/217:15 am
HEL
- STL
3 stops22h 14m
Scandinavian Airlines
Deal found 3/30![Scandinavian Airlines logo]()
$1,126
This Delta deal was found by Cheapflights users on 3/30. 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.
Thu 5/1410:19 am
STL
- HEL
2 stops22h 21m
Delta
Thu 5/217:00 am
HEL
- STL
2 stops22h 29m
Delta
Deal found 3/30![Delta logo]()
$899
This Iberia deal was found by Cheapflights users on 3/27. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/115:21 pm
STL
- HEL
1 stop12h 54m
Multiple Airlines
Mon 5/184:40 pm
HEL
- STL
2 stops34h 50m
Multiple Airlines
Deal found 3/27![Multiple Airlines logo]()
$945
This American Airlines deal was found by Cheapflights users on 3/31. 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.
Thu 7/231:09 pm
STL
- HEL
1 stop17h 06m
American Airlines
Thu 8/612:30 pm
HEL
- STL
2 stops19h 12m
American Airlines
Deal found 3/31![American Airlines logo]()
$1,068
This Finnair deal was found by Cheapflights users on 3/29. 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 8/64:18 pm
STL
- HEL
1 stop13h 57m
Multiple Airlines
Wed 8/1212:35 pm
HEL
- STL
1 stop15h 11m
Multiple Airlines
Deal found 3/29![Multiple Airlines logo]()
$1,054
This KLM deal was found by Cheapflights users on 3/27. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/13:45 pm
STL
- HEL
2 stops16h 55m
Multiple Airlines
Wed 7/157:00 am
HEL
- STL
2 stops17h 58m
Multiple Airlines
Deal found 3/27![Multiple Airlines logo]()
$1,125
Last-minute flights from St. Louis to HelsinkiDiscover last-minute flight deals from St. Louis to Helsinki. Data last updated April 1, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Helsinki. Data last updated April 1, 2026 and is based on user searches.
This Expedia deal was found by Cheapflights users on 3/31. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/123:30 pm
STL
- HEL
1 stop17h 30m
Lufthansa
Sat 4/187:40 pm
HEL
- STL
2 stops33h 33m
Lufthansa
Deal found 3/31![Lufthansa logo]()
$1,223
This Iberia deal was found by Cheapflights users on 3/31. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/1212:27 pm
STL
- HEL
1 stop14h 18m
Multiple Airlines
Sat 4/184:25 pm
HEL
- STL
1 stop13h 52m
Multiple Airlines
Deal found 3/31![Multiple Airlines logo]()
$1,367
This Ticket deal was found by Cheapflights users on 3/30. 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 Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/155:21 pm
STL
- HEL
1 stop12h 54m
Finnair
Sun 4/194:25 pm
HEL
- STL
1 stop13h 52m
Finnair
Deal found 3/30![Finnair logo]()
$982
This KLM deal was found by Cheapflights users on 3/30. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/1511:42 am
STL
- HEL
2 stops17h 23m
KLM
Sun 4/197:00 am
HEL
- STL
2 stops17h 42m
KLM
Deal found 3/30![KLM logo]()
$992
This Finnair deal was found by Cheapflights users on 3/30. 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.
Wed 4/152:33 pm
STL
- HEL
1 stop15h 42m
Multiple Airlines
Sun 4/197:40 am
HEL
- STL
2 stops19h 50m
Multiple Airlines
Deal found 3/30![Multiple Airlines logo]()
$1,203
This Priceline deal was found by Cheapflights users on 3/30. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/275:21 pm
STL
- HEL
1 stop12h 54m
Finnair
Mon 5/44:25 pm
HEL
- STL
1 stop13h 52m
Finnair
Deal found 3/30![Finnair logo]()
$825
This Iberia deal was found by Cheapflights users on 3/30. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/274:30 pm
STL
- HEL
1 stop13h 45m
Multiple Airlines
Mon 5/412:35 pm
HEL
- STL
1 stop18h 24m
Multiple Airlines
Deal found 3/30![Multiple Airlines logo]()
$831
This Delta deal was found by Cheapflights users on 3/30. 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 4/2710:50 am
STL
- HEL
2 stops21h 50m
Delta
Mon 5/47:00 am
HEL
- STL
2 stops18h 44m
Delta
Deal found 3/30![Delta logo]()
$843
This Air Canada deal was found by Cheapflights users on 3/30. 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.
Mon 4/2710:00 am
STL
- HEL
3 stops19h 10m
Air Canada
Mon 5/46:55 am
HEL
- STL
2 stops21h 14m
Air Canada
Deal found 3/30![Air Canada logo]()
$1,219
One-way flights from St. Louis to HelsinkiSearch for one-way flight options from St. Louis to Helsinki. Find affordable one-way fares based on user searches. Data last updated April 1, 2026.
Search for one-way flight options from St. Louis to Helsinki. Find affordable one-way fares based on user searches. Data last updated April 1, 2026.
This Kiwi.com deal was found by Cheapflights users on 3/31. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/266:04 pm
STL
- HEL
3 stops45h 36m
Multiple Airlines
Deal found 3/31![Multiple Airlines logo]()
$1,866
This Cheapflightsfares deal was found by Cheapflights users on 3/31. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/265:11 pm
STL
- HEL
1 stop13h 04m
Finnair
Deal found 3/31![Finnair logo]()
$2,980
Find 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 April 1, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $825 (Priceline) |
Popular in | July |
Cheapest in | February |
Average price | $647 |
Cheapflights Fare Finder
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 2,558,603 searches. Data last updated April 1, 2026.
Use the filters below to find and compare flights from St. Louis to Helsinki that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
St. LouisHelsinki
STL - HEL
STLHEL
Lambert-St Louis
Tue 5/12
11:25 am-4:40 pm
2 stops21h 15m
Helsinki-Vantaa
Tue 5/19
7:15 am-5:05 pm
2 stops17h 50m
$848
St. LouisHelsinki
STL - HEL
STLHEL
Lambert-St Louis
Mon 5/11
1:59 pm-4:40 pm
2 stops18h 41m
Helsinki-Vantaa
Mon 5/18
5:40 pm-4:10 pm
2 stops30h 30m
$858
St. LouisHelsinki
STL - HEL
STLHEL
Lambert-St Louis
Tue 5/12
12:27 pm-10:45 am
1 stop14h 18m
Helsinki-Vantaa
Tue 5/19
4:40 pm-7:30 pm
2 stops34h 50m
$875
St. LouisHelsinki
STL - HEL
STLHEL
Lambert-St Louis
Thu 5/14
10:19 am-4:40 pm
2 stops22h 21m
Helsinki-Vantaa
Thu 5/21
7:00 am-9:29 pm
2 stops22h 29m
$899
St. LouisHelsinki
STL - HEL
STLHEL
Lambert-St Louis
Mon 5/11
5:21 pm-2:15 pm
1 stop12h 54m
Helsinki-Vantaa
Mon 5/18
4:40 pm-7:30 pm
2 stops34h 50m
$945
St. LouisHelsinki
STL - HEL
STLHEL
Lambert-St Louis
Wed 4/15
11:42 am-1:05 pm
2 stops17h 23m
Helsinki-Vantaa
Sun 4/19
7:00 am-4:42 pm
2 stops17h 42m
$992
St. LouisHelsinki
STL - HEL
STLHEL
Lambert-St Louis
Thu 5/14
12:27 pm-3:15 pm
2 stops18h 48m
Helsinki-Vantaa
Thu 5/21
4:25 pm-11:54 pm
1 stop15h 29m
$1,044
Quickest round-trip
St. LouisHelsinki
STL - HEL
STLHEL
Lambert-St Louis
Thu 8/6
4:18 pm-2:15 pm
1 stop13h 57m
Helsinki-Vantaa
Wed 8/12
12:35 pm-7:46 pm
1 stop15h 11m
$1,054
St. LouisHelsinki
STL - HEL
STLHEL
Lambert-St Louis
Thu 8/6
5:40 am-10:45 am
1 stop21h 05m
Helsinki-Vantaa
Wed 8/12
12:30 pm-11:42 pm
2 stops19h 12m
$1,068
St. LouisHelsinki
STL - HEL
STLHEL
Lambert-St Louis
Thu 7/23
1:09 pm-2:15 pm
1 stop17h 06m
Helsinki-Vantaa
Thu 8/6
12:30 pm-11:42 pm
2 stops19h 12m
$1,068
Showing 1-10 of 14 resultsSorted by cheapest first
Compare providers for flights from St. Louis to Helsinki
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from St. Louis to Helsinki in April.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*2 stars |
- Most accurate provider: When it comes to deals on St. Louis-Helsinki flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-Helsinki flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-Helsinki flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on St. Louis-Helsinki flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for St. Louis-Helsinki flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
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.
STL-HEL
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 Helsinki
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 April 1, 2026.
Read through reviews of airlines operating flights from St. Louis to Helsinki, such as Finnair and American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.2
Boarding
7.7
Comfort
7.5
Food
6.7
Entertainment
6.9
Overall
7.7
Reviews
1 / 20
6.0
GoodFiruz,Feb 2026
FRA - HEL
Crew
8.2
Boarding
7.7
Comfort
7.5
Food
6.7
Entertainment
6.9
Overall
7.7
Reviews
1 / 20
6.0
GoodFiruz,Feb 2026
FRA - HEL
Crew
8.2
Boarding
7.7
Comfort
7.5
Food
6.7
Entertainment
6.9
Overall
7.7
Reviews
1 / 20
6.0
GoodFiruz,Feb 2026
FRA - HEL
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.
Traveling to a place near Helsinki?
Book flights to Helsinki if you plan to visit one of these locationsVantaa
Lahti
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.
Complete your trip
Flights by cabin class
Helsinki flight routes
Other flight options
Other flights from St. Louis
Popular flights
Complete your trip
Complete your trip to Helsinki by adding a car rental and/or hotel reservation to your travel itinerary.
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.
Other flights to Helsinki
Explore flights to Helsinki departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on April 1, 2026.
St. Louis and Helsinki flights
Browse other St. Louis and Helsinki flight options. Last updated on April 1, 2026.
Other flights from St. Louis
Browse through other flights departing from St. Louis. Flights are based on user searches made on Cheapflights and were last updated on April 1, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 2 airlines flying from St. Louis to Helsinki
Discover the top 2 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 2,558,603 searches. Data last updated April 1, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$433 | Average$784 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$481 | Average$764 | FlexibilityNo cancel fee | On-time71% |