$825 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 4/27. 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, Apr 27 - Mon, May 4
Finnair Logo
5:21 pm - 2:15 pm
STL
-
HEL
12h 54m
1 stop
Finnair Logo
4:25 pm - 10:17 pm
HEL
-
STL
13h 52m
1 stop
$825Finnair
Mon, Apr 27 - Mon, May 4
Multiple Airlines Logo
4:30 pm - 2:15 pm
STL
-
HEL
13h 45m
1 stop
Multiple Airlines Logo
12:35 pm - 10:59 pm
HEL
-
STL
18h 24m
1 stop
$831Multiple Airlines
Tue, May 12 - Tue, May 19
Multiple Airlines Logo
12:27 pm - 10:45 am
STL
-
HEL
14h 18m
1 stop
Multiple Airlines Logo
4:25 pm - 10:19 pm
HEL
-
STL
13h 54m
1 stop
$837Multiple Airlines
Mon, Apr 27 - Mon, May 4
Delta Logo
10:50 am - 4:40 pm
STL
-
HEL
21h 50m
2 stops
Delta Logo
7:00 am - 5:44 pm
HEL
-
STL
18h 44m
2 stops
$843Delta
Tue, May 12 - Tue, May 19
Delta Logo
11:25 am - 4:40 pm
STL
-
HEL
21h 15m
2 stops
Delta Logo
7:15 am - 5:05 pm
HEL
-
STL
17h 50m
2 stops
$848Delta
Mon, Apr 27 - Mon, May 4
Multiple Airlines Logo
4:30 pm - 2:15 pm
STL
-
HEL
13h 45m
1 stop
Multiple Airlines Logo
4:40 pm - 7:33 pm
HEL
-
STL
34h 53m
2 stops
$859Multiple Airlines
Tue, May 12 - Tue, May 19
Multiple Airlines Logo
12:27 pm - 10:45 am
STL
-
HEL
14h 18m
1 stop
Multiple Airlines Logo
4:40 pm - 7:30 pm
HEL
-
STL
34h 50m
2 stops
$875Multiple Airlines
Thu, May 14 - Thu, May 21
Delta Logo
10:19 am - 4:40 pm
STL
-
HEL
22h 21m
2 stops
Delta Logo
7:00 am - 9:29 pm
HEL
-
STL
22h 29m
2 stops
$899Delta
Thu, May 14 - Thu, May 21
Multiple Airlines Logo
2:33 pm - 2:15 pm
STL
-
HEL
15h 42m
1 stop
Multiple Airlines Logo
12:35 pm - 6:30 pm
HEL
-
STL
13h 55m
1 stop
$935Multiple Airlines
Wed, Apr 15 - Sun, Apr 19
Finnair Logo
5:21 pm - 2:15 pm
STL
-
HEL
12h 54m
1 stop
Finnair Logo
4:25 pm - 10:17 pm
HEL
-
STL
13h 52m
1 stop
$982Finnair
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 Delta ($848) and KLM ($992).

Good to know

Low seasonFebruary
Cheapest flight$825
Best time to beat the crowds with an average 29% drop in price.
Most popular time to fly with an average 41% 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 airlines 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.
7.7
FinnairOverall score based on 1376 reviews
7.5Comfort
6.7Food
7.7Boarding
8.2Crew
6.9Entertainment
Airline reviews

Positive: It was refreshingly easy and polite check-in and boarding staff. Flight was on time and Helsinki is a very well-signposted airport. Shopping was nice as well. Flight was not full and I had lots of space in economy. Flight was perfectly on time. Negative: Food and drink not very good, but that it is normal on any airline. Didn't expect anything else.

8.0 ExcellentFiruz, Feb 2026
HEL - ICN
Read more Finnair reviews

Positive: It was refreshingly easy and polite check-in and boarding staff. Flight was on time and Helsinki is a very well-signposted airport. Shopping was nice as well. Flight was not full and I had lots of space in economy. Flight was perfectly on time. Negative: Food and drink not very good, but that it is normal on any airline. Didn't expect anything else.

Business seating is soooo uncomfortable. You can sit straight up or lay down. You need pillows behind you because the back doesn’t lay down. Those are need to “prop” you up. The chair has no padding whatsoever. Food was gross. I’ve eaten on Finnair before and the food was exceptional. This time it gave 2 people in our party diarrhea. It was the chicken dish. I took 2 bites and didn’t eat anything more. The flight attendants were nice. You needed an additional lounge in Terminal D at DFW Airport. After waiting 40 minutes to enter, we finally gave up and went to a bar across from the club doors. I’m unsure if I’ll ever book a Finnair flight again.

Very good seat, very comfortable, good food, and good service.

It was a good flight, very comfortable seats for sleeping in business class. Probably the most comfortable business class seat I've ever had (20+ times in business class on various airlines). Service was good, but the only downside is my screen didn't work and it had to be reset multiple times to get it to shut off. I had to block my eyes because the screen was white almost the entire flight and I wore an eye mask when I slept. But when eating and reading in my seat, my eyes hurt because the only way to turn the screen off was reset it and the screen would only be off for a few minutes at a time.

Everything was wonderful! AirBus seats are more comfortable to sleep in as compared to the Boeing planes.

Great. It was awesome to have boarding from the front and back of the plane as it made the process go very quickly

It was okay. The airplane was a little smaller than a flight from Thailand to Helsinki.

Wish that everyone would board the back of the plane first. Also let kids on first. The gate wasn’t open at arrival and we waited 45 minutes to takeoff. They made up for time in the air.

This was an absolutely exceptional flight. The flight attendants were extremely attentive and very friendly. They seemed to go out of their way to make us comfortable and to make sure that we had everything we needed., We were in business and were very happy with the size and the details for our pods. We would definitely recommend Finnair and will definitely be flying with them again.

We had an excellent trip with Finnair. This was our first time and we’re very pleased. The only issue was with the boarding - it was a little bit confusing and needs a little bit of streamlining.

Moved to earlier flight which unexpectedly had maintenance issues initially indicated as quick fix to ultimately plane changes. Moved back to original flight, also delayed. In all cases customer updates and communication very unclear, no updates on drivers for delays.

Flight was delayed. No urgency by American Airlines team to assist those with connecting flights. It was basically you are on your own to run through the terminals to try and make your connection. Thanks, Mary

I have never been assaulted they way I was today in Charlotte - shame on American

One of our group members was struggling to walk. In Charlotte we asked for a wheelchair and she was accompanied by Desmond. I was impressed by his patience and attention. In Boston she received the same service. I didn’t get the name of the helper but she went above and beyond in assisting us. A great AA service

Better snacks but flight and crew were amazing on this flight

Found that the plane used for this short flight is smaller and therefore the seats are really squeezed tight.

It was the most un-special flight experience in my life.

Plane was super cold. No entertainment unless you were with mileage program Getting off the plane was super slow

Flight was on-time, boarding was flawless and the crew was friendly.

The staff are very, very professional. It's what flying should feel like.

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

Information on your arrival and departure airports