$569 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 5/7. 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

Thu, May 7 - Mon, May 11
United Airlines Logo
7:45 am - 12:05 pm
STL
-
HEL
20h 20m2 stops
United Airlines Logo
1:50 pm - 8:54 pm
HEL
-
STL
39h 04m2 stops
$569United Airlines
Thu, May 7 - Mon, May 11
Multiple Airlines Logo
4:39 pm - 2:15 pm
STL
-
HEL
13h 36m1 stop
Multiple Airlines Logo
4:25 pm - 9:48 pm
HEL
-
STL
13h 23m1 stop
$583Multiple Airlines
Wed, Jan 14 - Sun, Jan 18
United Airlines Logo
3:50 pm - 1:10 pm
STL
-
HEL
13h 20m1 stop
United Airlines Logo
1:50 pm - 3:29 pm
HEL
-
STL
33h 39m2 stops
$603United Airlines
Sat, Mar 21 - Sun, Mar 29
American Airlines Logo
7:00 am - 10:45 am
STL
-
HEL
20h 45m1 stop
American Airlines Logo
4:25 pm - 11:52 pm
HEL
-
STL
15h 27m1 stop
$606American Airlines
Wed, Jan 14 - Sun, Jan 18
United Airlines Logo
6:40 pm - 1:20 pm
STL
-
HEL
34h 40m2 stops
United Airlines Logo
1:50 pm - 3:29 pm
HEL
-
STL
33h 39m2 stops
$613United Airlines
Thu, May 7 - Mon, May 11
American Airlines Logo
2:34 pm - 2:15 pm
STL
-
HEL
15h 41m2 stops
American Airlines Logo
4:25 pm - 9:48 pm
HEL
-
STL
13h 23m1 stop
$627American Airlines
Fri, Mar 20 - Fri, Mar 27
United Airlines Logo
4:50 pm - 1:05 pm
STL
-
HEL
13h 15m1 stop
United Airlines Logo
6:50 am - 3:29 pm
HEL
-
STL
39h 39m2 stops
$634United Airlines
Sat, Mar 21 - Sun, Mar 29
American Airlines Logo
1:36 pm - 1:55 pm
STL
-
HEL
17h 19m2 stops
American Airlines Logo
4:25 pm - 11:52 pm
HEL
-
STL
15h 27m1 stop
$638American Airlines
Fri, Mar 20 - Fri, Mar 27
American Airlines Logo
9:35 am - 10:45 am
STL
-
HEL
18h 10m1 stop
American Airlines Logo
12:30 pm - 7:29 pm
HEL
-
STL
13h 59m1 stop
$706American Airlines
Sat, Mar 21 - Sun, Mar 29
British Airways Logo
1:30 pm - 6:25 pm
STL
-
HEL
21h 55m2 stops
British Airways Logo
7:30 pm - 11:04 pm
HEL
-
STL
35h 34m2 stops
$712British Airways
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.

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 United Airlines ($569) and American Airlines ($606).

Find deals

Good to know

Low seasonDecember
Cheapest flight$569
Best time to beat the crowds with an average 32% drop in price.
Most popular time to fly with an average 21% 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.

  • What is the cheapest time of day to fly to Finland?

    The cheapest time of day to fly to Finland is generally in the morning, when round-trip flights cost $706 on average. Morning departures are around 46% cheaper than evening flights, on average. The most expensive time of day to fly to Finland is generally in the afternoon, which is peak travel time and where the average cost of a ticket is $1,476.

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 11058 reviews
8.0Crew
6.5Food
6.9Entertainment
7.2Comfort
7.5Boarding
Airline reviews

Experience was good, however I had a delay due to weather happening and had to re purchase a seat on a new plane for a higher price (could be my own issue and misunderstanding) but other than that situation. First time flyer (by myself) was terrific!! The last from ORD to ALO didn't have wifi, but it was only 45 minutes so I'm sure that was part of the reason. Overall my experience was great! Next time I will remember to buy tickets with longer layovers. The delays really saved my overall anxiety. :)

8.0 ExcellentAustin, Dec 2025
ECP - CLT
Read more American Airlines reviews

Experience was good, however I had a delay due to weather happening and had to re purchase a seat on a new plane for a higher price (could be my own issue and misunderstanding) but other than that situation. First time flyer (by myself) was terrific!! The last from ORD to ALO didn't have wifi, but it was only 45 minutes so I'm sure that was part of the reason. Overall my experience was great! Next time I will remember to buy tickets with longer layovers. The delays really saved my overall anxiety. :)

Flight was delayed 17 hours due to aircraft issues. American did provide hotel, transportation and meals, 3 hours past boarding time, but it took us another hour to get the vouchers.

Flight was on time is the only good thing. Person loading the plane called 1-6 to board at the same time, made it chaotic. Plane was too small for even putting backpacks in overhead. Seat for normal sized people were too small. The WIFI didn't work. When we landed had to wait because not enough ground crew.

Did not understand a single word the attendant said on the pa system. I was glad it was not an emergency.

Flight was late and boarding was confusing because gate changed and I didn’t get a notification

Gate was overcrowded. Gate agents performed very well. Flight crew was top notch! Efficient & professional & courteous. Both meals not thermalized well. Dinner main dish was actually cold in the center. Almost inedible. Breakfast sandwich was lukewarm.

The boarding was as always, the crew tried their best but not enough. The food was a disaster I had dietary restrictions that were half met because the company did not loaded the food for the flight. The entertainment screen was fine but content was not and also they removed the free messaging option from the flight and they charged 30 dollars for that crappy bandwidth. This flight is not worth the cost and the company is going down on quality.

Not comparable to Qatar Airways services on flights to Doha. Flight attendants provided basic services; I was never recognized by name or as an Executive Platinum member. Restrooms were not kept clean during the flight.

Awful. They won’t help me with anything. I booked on American but they abdicated to Iberia. The ticket was overpriced. Everything negative

it was fine, decent flight... dont get food besides cookies or pretzels so not sure why you ask about food. same for entertainment..

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

Information on your arrival and departure airports

St. Louis (STL)