$476 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 6/15. 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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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, Sep 7 - Mon, Sep 14
Scandinavian Airlines Logo
1:30 pm - 3:20 pm
STL
-
HEL
17h 50m
2 stops
Scandinavian Airlines Logo
6:10 am - 8:50 pm
HEL
-
STL
22h 40m
2 stops
$699Scandinavian Airlines
Thu, Apr 30 - Thu, May 7
American Airlines Logo
2:33 pm - 2:15 pm
STL
-
HEL
15h 42m
1 stop
American Airlines Logo
4:25 pm - 11:56 pm
HEL
-
STL
15h 31m
1 stop
$715American Airlines
Sun, Apr 12 - Tue, Apr 28
Multiple Airlines Logo
12:27 pm - 2:15 pm
STL
-
HEL
17h 48m
1 stop
Multiple Airlines Logo
12:20 pm - 7:30 pm
HEL
-
STL
15h 10m
1 stop
$718Multiple Airlines
Mon, Sep 7 - Mon, Sep 14
Scandinavian Airlines Logo
3:42 pm - 8:35 pm
STL
-
HEL
20h 53m
3 stops
Scandinavian Airlines Logo
6:10 am - 8:50 pm
HEL
-
STL
22h 40m
2 stops
$728Scandinavian Airlines
Mon, Sep 7 - Mon, Sep 14
Scandinavian Airlines Logo
3:42 pm - 8:35 pm
STL
-
HEL
20h 53m
3 stops
Scandinavian Airlines Logo
6:10 am - 8:50 pm
HEL
-
STL
22h 40m
2 stops
$729Scandinavian Airlines
Thu, Apr 30 - Thu, May 7
Multiple Airlines Logo
12:27 pm - 2:15 pm
STL
-
HEL
17h 48m
1 stop
Multiple Airlines Logo
4:25 pm - 10:19 pm
HEL
-
STL
13h 54m
1 stop
$731Multiple Airlines
Thu, Apr 30 - Thu, May 7
American Airlines Logo
4:30 pm - 2:15 pm
STL
-
HEL
13h 45m
1 stop
American Airlines Logo
12:35 pm - 10:19 pm
HEL
-
STL
17h 44m
2 stops
$737American Airlines
Mon, Sep 7 - Mon, Sep 14
Lufthansa Logo
6:55 pm - 6:55 pm
STL
-
HEL
16h 00m
2 stops
Lufthansa Logo
6:15 pm - 1:25 pm
HEL
-
STL
27h 10m
1 stop
$750Lufthansa
Sun, Apr 12 - Tue, Apr 28
Delta Logo
6:32 am - 1:05 pm
STL
-
HEL
22h 33m
2 stops
Delta Logo
7:00 am - 8:44 pm
HEL
-
STL
21h 44m
2 stops
$758Delta
Mon, May 4 - Mon, May 11
Iberia Logo
11:14 am - 3:25 pm
STL
-
HEL
20h 11m
2 stops
Iberia Logo
4:40 pm - 7:33 pm
HEL
-
STL
34h 53m
2 stops
$766Iberia
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 Scandinavian Airlines ($729) and Delta ($758).

Good to know

Low seasonFebruary
Cheapest flight$476
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 1374 reviews
8.2Crew
6.7Food
6.9Entertainment
7.7Boarding
7.5Comfort
Airline reviews

Great if not for the boarding by bus at Heathrow terminal 3. Medieval disappointing time-consuming and very hard on handicapped flyers. It was awful

10.0 ExcellentFrancesca, Mar 2026
LHR - BOS
Read more Finnair reviews

Great if not for the boarding by bus at Heathrow terminal 3. Medieval disappointing time-consuming and very hard on handicapped flyers. It was awful

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.

All reviews good because...flight from BWI to London ,economy seats was miserable. I usually book 1,step up from economy but this would have added 1500 bucks 1 way. Bit the bullet and upgraded for retun flight, otherwise all ratings would have been rock bottom.

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.

It was great. Smooth flight, comfortable, left on time and landed on time.

Perhaps this is an airport issue, but being in a takeoff queue for over an hour in the taxiing lane is unacceptable. We will definitely be seeking alternative avenues for air travel in the future.

We hoarded. Then we deplaned. Then we waited for 10 hours in the MSP airport due to a wheel misfunction. We understand safety but communication between crew and airport staff was horrible. When we did finally board, we were rushed on and because we were waiting for a “fresh” pilot and crew, we sat in a roasting plane with no A/C for an hour. My question is why was this flight not cancelled right away when they knew this would be a huge issue OR, why did AA not get a substitute plane, considering this was already a full flight? To me, this appears to be a complete breakdown in leadership and utter systems failure. The compensation for completely disrupting travel plans for hundreds, which we paid dearly for, was measly. While we appreciated the lodging for the night, $12 in meal vouchers isn’t going to sustain anyone for over 12 hours. “We apologize; our hands are tied” is no longer an acceptable explanation. We are so completely turned off by this experience and will definitely seek alternative avenues when we need to fly.

Mostly good. The WiFi wasn’t working so that was not great.

I rated the experience "mediocre" because of the 2 hour delay in take off. This is the 4th flight from DFW on AA where there was a delay and in one of the instances (after 13 delays), the flight was cancelled. I understand weather but for the March 18th flight, there was no weather issue in Dallas or Detroit. I called Concierge Key and they were wonderful, booking me on a later flight in case my flight was cancelled. I have flown with American for many years and never has there been this consistent pattern of delays. Very disappointing.

They put me on an earlier and I got home sooner

Not good. One of my luggage is missing. And until now they can’t find it

Horrible experience upon landing. Probably more due to DCA utter incompetence than AA.

Jill was the flight attendant in first class she was fabulous!! Best flight attendant I have had in years.!! And I fly every other week. Other can learn from her!!

Really good. I accidentally left my duffel on the plane and the reps were so friendly in retrieving it.

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

Information on your arrival and departure airports