$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 2/17. 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

Tue, Feb 17 - Tue, Feb 24
Multiple Airlines Logo
9:35 am - 10:45 am
STL
-
HEL
17h 10m1 stop
Multiple Airlines Logo
12:30 pm - 11:22 pm
HEL
-
STL
18h 52m1 stop
$484Multiple Airlines
Tue, Feb 17 - Tue, Feb 24
American Airlines Logo
11:59 am - 1:55 pm
STL
-
HEL
17h 56m2 stops
American Airlines Logo
12:30 pm - 11:48 pm
HEL
-
STL
19h 18m2 stops
$489American Airlines
Sun, Feb 1 - Sun, Feb 15
Iberia Logo
9:33 am - 10:25 pm
STL
-
HEL
28h 52m2 stops
Iberia Logo
12:30 pm - 10:58 pm
HEL
-
STL
18h 28m1 stop
$515Iberia
Sun, Feb 1 - Sun, Feb 15
Lufthansa Logo
1:15 pm - 6:50 pm
STL
-
HEL
21h 35m2 stops
Lufthansa Logo
5:45 pm - 8:23 pm
HEL
-
STL
58h 38m2 stops
$532Lufthansa
Sun, Feb 1 - Sun, Feb 15
Multiple Airlines Logo
11:37 am - 1:55 pm
STL
-
HEL
18h 18m1 stop
Multiple Airlines Logo
4:50 pm - 11:11 am
HEL
-
STL
26h 21m1 stop
$564Multiple Airlines
Tue, Feb 17 - Tue, Feb 24
United Airlines Logo
11:25 am - 6:50 pm
STL
-
HEL
23h 25m2 stops
United Airlines Logo
7:05 am - 10:14 pm
HEL
-
STL
23h 09m3 stops
$589United Airlines
Tue, May 19 - Tue, May 26
Multiple Airlines Logo
5:30 pm - 4:40 pm
STL
-
HEL
15h 10m2 stops
Multiple Airlines Logo
7:00 am - 4:49 pm
HEL
-
STL
17h 49m2 stops
$626Multiple Airlines
Tue, May 19 - Tue, May 26
British Airways Logo
10:00 pm - 10:55 am
STL
-
HEL
28h 55m2 stops
British Airways Logo
4:00 pm - 7:30 pm
HEL
-
STL
35h 30m1 stop
$640British Airways
Tue, May 19 - Tue, May 26
American Airlines Logo
4:46 pm - 2:15 pm
STL
-
HEL
13h 29m1 stop
American Airlines Logo
4:25 pm - 11:42 pm
HEL
-
STL
15h 17m1 stop
$643American Airlines
Wed, May 20 - Wed, May 27
American Airlines Logo
8:53 am - 2:15 pm
STL
-
HEL
21h 22m1 stop
American Airlines Logo
8:00 am - 6:52 pm
HEL
-
STL
18h 52m2 stops
$692American 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 fly non-stop between St. Louis and Finland?

Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for round-trip flights from St. Louis to Finland.

There is just one airline that flies from St. Louis to Finland direct and that is American Airlines. The best round-trip deal found from American Airlines for the route is to Helsinki (HEL) and costs $490.

Good to know

Low seasonFebruary
Cheapest flight$484
Best time to beat the crowds with an average 39% drop in price.
Most popular time to fly with an average 23% 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 11079 reviews
7.5Boarding
7.2Comfort
6.4Food
8.0Crew
6.9Entertainment
Airline reviews

Kayak was among the missing. There was not the usual advice regarding next gate after arriving in Dallas. No communication after the reminder to check in before the Moline flight. What happened?

8.0 ExcellentDavid, Jan 2026
MLI - DFW
Read more American Airlines reviews

Kayak was among the missing. There was not the usual advice regarding next gate after arriving in Dallas. No communication after the reminder to check in before the Moline flight. What happened?

They should have allowed for extra time to de-ice the plane before boarding passengers. This delayed us about 10-15 mins after we boarded. Overall experience was fine. Crew was friendly and on top of everything. We didn’t have any issues during the flight.

Experience was good. We were delayed in leaving by 15 mins because the flight was waiting on a family that was late in getting to the gate. Food and drink options were as expected. I highly recommend checking in ahead of time using the airline’s app so that it’s quicker to get your luggage tags as soon as you arrive at the terminal. No more waiting in long lines!

Overall experience was great. Flights were almost on time in departing and we arrived at our destination as scheduled. No issues with amenities or flight crew. Everything went well as as expected. Will fly again with American Airlines in the future!

We never made it due to delays on both ends. Gate attendant said it was mechanical but the system said otherwise, so no compensation. That’s not right.

Our flight from Eagle to Vail was delayed to the point we missed our connection to Savannah. Now we’re a family of 4 in a hotel room with luggage, no toiletries, no clean clothes. Gate attendant said the delay was mechanical but it was put in the system as something else so no compensation. That’s just wrong.

Crew were all friendly and helpful. It was a short flight so just a beverage service with a cookie. After we were boarded the plane took about 45 minutes to leave the gate but it was New Year’s Eve so not shocking there was some delay. Overall good experience and very grateful.

After the door had been closed, the cockpit makes an announcement that catering is running late and it is not the airline's fault. It is their fault in the sense that we had to sit for 2 hours or more when we could have stayed in the terminal. Poor communications between catering and airline. This caused a young man to lose his temper and he went storming out hitting objects. He had complained to the gate agent that he had already waited at the gate 7 hours and when can the airplane leave? Airilnes do a poor job of explaining delays, maintenance issues, etc. whereas being truthful may gain more sympathy or understanding.

The flight was very smooth and the meal in business class was great.

The captain brought my 6 year old son into the cockpit and allowed him to ask questions, sit in the captain’s chair and talk about all the gears and levers. Made the trip very special for him.

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

Information on your arrival and departure airports