$484 Find Cheap Flights from St. Louis to Finland

This is the cheapest round-trip 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

Mon, Mar 9 - Mon, Mar 16
Finnair Logo
11:22 am - 11:10 am
STL
-
HEL
16h 48m
1 stop
Finnair Logo
12:45 pm - 11:58 pm
HEL
-
STL
18h 13m
1 stop
$484Finnair
Mon, Mar 9 - Mon, Mar 16
Lufthansa Logo
7:00 pm - 6:50 pm
STL
-
HEL
16h 50m
2 stops
Lufthansa Logo
6:55 am - 6:00 pm
HEL
-
STL
42h 05m
2 stops
$487Lufthansa
Mon, Mar 9 - Mon, Mar 16
American Airlines Logo
11:46 am - 10:45 am
STL
-
HEL
15h 59m
1 stop
American Airlines Logo
12:30 pm - 11:44 pm
HEL
-
STL
18h 14m
2 stops
$489American Airlines
Wed, Mar 25 - Wed, Apr 1
American Airlines Logo
11:22 am - 11:10 am
STL
-
HEL
16h 48m
1 stop
American Airlines Logo
4:25 pm - 9:11 pm
HEL
-
STL
12h 46m
1 stop
$514American Airlines
Sat, Apr 4 - Wed, Apr 15
American Airlines Logo
6:33 pm - 2:15 pm
STL
-
HEL
11h 42m
1 stop
American Airlines Logo
4:25 pm - 11:46 pm
HEL
-
STL
15h 21m
1 stop
$534American Airlines
Wed, Apr 1 - Wed, Apr 8
Lufthansa Logo
3:30 pm - 6:55 pm
STL
-
HEL
19h 25m
2 stops
Lufthansa Logo
6:35 am - 9:08 pm
HEL
-
STL
22h 33m
2 stops
$537Lufthansa
Sat, Apr 4 - Wed, Apr 15
American Airlines Logo
8:00 am - 2:15 pm
STL
-
HEL
22h 15m
1 stop
American Airlines Logo
12:35 pm - 10:17 pm
HEL
-
STL
17h 42m
2 stops
$539American Airlines
Sat, Apr 4 - Wed, Apr 15
KLM Logo
5:29 pm - 5:40 pm
STL
-
HEL
16h 11m
2 stops
KLM Logo
7:00 am - 2:29 pm
HEL
-
STL
15h 29m
2 stops
$552KLM
Sat, Apr 11 - Tue, Apr 21
United Airlines Logo
7:45 am - 5:00 pm
STL
-
HEL
25h 15m
2 stops
United Airlines Logo
2:05 pm - 3:24 pm
HEL
-
STL
33h 19m
2 stops
$560United Airlines
Wed, Mar 25 - Wed, Apr 1
Iberia Logo
2:00 pm - 10:25 pm
STL
-
HEL
25h 25m
2 stops
Iberia Logo
4:25 pm - 11:44 pm
HEL
-
STL
15h 19m
1 stop
$593Iberia
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 Finnair ($484) and American Airlines ($484).

Find deals

Good to know

Low seasonFebruary
Cheapest flight$484
Best time to beat the crowds with an average 36% drop in price.
Most popular time to fly with an average 30% 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 11267 reviews
7.5Boarding
8.0Crew
6.9Entertainment
6.4Food
7.2Comfort
Airline reviews

The flight was on time/early, attentive crew, and everything overall went smoothly. Disappointed that WIFI was not working for the flight.

8.0 ExcellentGail, Feb 2026
ATL - DCA
Read more American Airlines reviews

The flight was on time/early, attentive crew, and everything overall went smoothly. Disappointed that WIFI was not working for the flight.

One day, I do so hope for a gluten free snack! Seems like with the rest of the world FINALLY figuring out what gluten free is, American Airlines would too. Fingers crossed!!

The flight was significantly delayed for 6.5 hours because of snow. There was no communication once the plane returned to the gate regarding when the flight would resume. Other flights were departing while our flight was being unloaded for reasons unknown. Our flight also seemed out of the queue regarding further deicing, refueling, and waiting to Taxi to the runway.

Flight was on time and the meal and service were good.

The accessible bathroom should be visible to people in Economy class.

Flight was delayed for 2 hours, then last minute the change to on time. The satélite location is far and a nightmare to get to.

This was a horrible experience. I’ve experienced several delays at this point and still not home. I was supposed to be home by 8:30 last night and here I sit at 7 am on a plane STILL unable to go home because of American Airlines.

Lexus in first class was absolutely amazing! Beat flight attendant i’ve ever seen.

Generally good. Flight left on time and the seats are comfortable. Plenty of space in front if you in you choose a comfort plus seat, completely worth spending the extra money given the amount of hours the flight lasts. The food tastes good but I would say it’s a the amount is too little. The crew was friendly and efficient. There was a some turbulence at different points into the flight. American Airlines has good deals to NZ if you book with plenty of time before you plan on going.

the plane was so hot!! the air-conditioning was barely blowing. The flight was delayed, and we had to sit on the hot plane before take off for an extended amount of time, waiting on international passengers. Would not have been so bad if it was not so hot. They said it would get better after take off, but it did not.

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

Information on your arrival and departure airports

St. Louis (STL)