$279 Find Cheap Flights from St. Louis to Finland

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from St. Louis to Finland departing on 3/9. 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.
1 adult
1 adult, Economy, 0 bags

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Flight Deals

Book Cheap St. Louis to Finland Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from St. Louis to Finland that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from St. Louis to Finland

Wed, Apr 1 - Wed, Apr 8
American Airlines Logo
8:00 am - 2:15 pm
STL
-
HEL
22h 15m
1 stop
American Airlines Logo
4:25 pm - 11:46 pm
HEL
-
STL
15h 21m
1 stop
$485American Airlines
Tue, Mar 10 - Wed, Mar 18
Lufthansa Logo
7:00 pm - 6:50 pm
STL
-
HEL
16h 50m
2 stops
Lufthansa Logo
6:55 am - 6:00 pm
HEL
-
STL
18h 05m
2 stops
$488Lufthansa
Sun, Mar 8 - Tue, Mar 17
American Airlines Logo
1:34 pm - 1:55 pm
STL
-
HEL
17h 21m
2 stops
American Airlines Logo
12:30 pm - 11:22 pm
HEL
-
STL
17h 52m
1 stop
$489American Airlines
Mon, Mar 9 - Thu, Mar 19
Delta Logo
1:39 pm - 4:25 pm
STL
-
HEL
19h 46m
2 stops
Delta Logo
7:00 am - 9:05 am
HEL
-
STL
33h 05m
2 stops
$500Delta
Tue, Mar 10 - Tue, Mar 17
United Airlines Logo
7:00 pm - 6:50 pm
STL
-
HEL
16h 50m
2 stops
United Airlines Logo
7:05 am - 9:21 am
HEL
-
STL
33h 16m
2 stops
$501United Airlines
Wed, Mar 4 - Wed, Mar 11
United Airlines Logo
9:55 am - 1:10 pm
STL
-
HEL
19h 15m
2 stops
United Airlines Logo
6:55 am - 2:55 pm
HEL
-
STL
15h 00m
1 stop
$503United Airlines
Sun, Mar 8 - Mon, Mar 16
Multiple Airlines Logo
7:00 pm - 1:20 am
STL
-
HEL
23h 20m
2 stops
Multiple Airlines Logo
1:55 pm - 3:29 pm
HEL
-
STL
32h 34m
2 stops
$505Multiple Airlines
Wed, Mar 4 - Wed, Mar 11
Delta Logo
10:14 am - 5:25 pm
STL
-
HEL
23h 11m
2 stops
Delta Logo
7:00 am - 5:05 pm
HEL
-
STL
17h 05m
2 stops
$506Delta
Thu, Mar 5 - Wed, Mar 11
United Airlines Logo
7:41 am - 1:20 pm
STL
-
HEL
21h 39m
2 stops
United Airlines Logo
1:55 pm - 3:29 pm
HEL
-
STL
32h 34m
2 stops
$512United Airlines
Thu, Mar 5 - Thu, Mar 12
United Airlines Logo
7:41 am - 1:20 pm
STL
-
HEL
21h 39m
2 stops
United Airlines Logo
6:55 am - 6:00 pm
HEL
-
STL
18h 05m
2 stops
$513United Airlines
Booking Insights

KAYAK's insights & trends for St. Louis to Finland flights

Get data-powered insights and trends into flights from St. Louis to Finland to help you find the cheapest flights, the best time to fly and much more.

Which airlines provide the cheapest flights from St. Louis to Finland?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from St. Louis to Finland were found on American Airlines ($489) and Lufthansa ($500).

Good to know

Low seasonFebruary
Cheapest flight$279
Best time to beat the crowds with an average 39% drop in price.
Most popular time to fly with an average 25% increase in price.
Flight from St. Louis to Helsinki

FAQs - booking Finland flights

  • How does KAYAK find such low prices on flights from St. Louis to Finland?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from St. Louis to Finland.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from St. Louis to Finland?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from St. Louis to Finland is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from St. Louis to Finland?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from St. Louis to Finland with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from St. Louis to Finland?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from St. Louis to Finland up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from St. Louis to Finland

 
Need help choosing which airline to fly with from St. Louis to Finland? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.2
American AirlinesOverall score based on 11211 reviews
7.2Comfort
8.0Crew
6.4Food
6.9Entertainment
7.5Boarding
Airline reviews

Update to handle the delay was very bad, crews no smiles or welcome or thanks. Don’t care attitude

2.0 MediocreManikandan, Jan 2026
DFW - ORD
Read more American Airlines reviews

Update to handle the delay was very bad, crews no smiles or welcome or thanks. Don’t care attitude

It would be nice to have some low carb options in the snacks.

I was trying to take 2 one and a half hour one way trips and I experienced almost 20 delays over the course of those two trips. Only a few of them were due to weather the rest was disorganization

No gates avail at DFW so our incoming had to wait 30 mins for a plane to push back because they Had mechanical. We boarded 90 mins delayed and then we had a mechanical. Come on American…do better. Also at my seat the tray table had not been cleaned. Floor had not been cleaned. But captain and flight Att were very picture and apologetic.

Crew was helpful and cheerful especially when they had no refreshments to work with. The plane was never serviced and had nothing but limited water and coffee onboard. For the price point, a concern of services.

Flight was smooth, quick and felt safe. The 2 delays not happening would have been better but I guess that happens in the airline industry

Flight was canceled. I asked to be rerouted to OKC and then took an Uber.

AA did not allow to board a flight because my connecting flight from DFW had been canceled. I got on another flight to another city. No service on the plane and I did not use their entertainment system.

On time on a day with lots of weather cancellations on other flights. Thank you for getting me home during a winter storm!

Don't change gate multiple times make people run across the airport. Announce delays in a timely manner. Have maintenance crew ready. Don't delay and keep passengers on the plane for 3 hrs. on tarmac.

Everything you need to know for your flight from St. Louis to Finland

Information on your arrival and departure airports