$488 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 1/21. 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

Wed, Jan 21 - Sun, Jan 25
Lufthansa Logo
11:22 am - 12:00 pm
STL
-
HEL
16h 38m2 stops
Lufthansa Logo
6:55 am - 1:55 pm
HEL
-
STL
15h 00m1 stop
$488Lufthansa
Wed, Apr 15 - Tue, Apr 21
United Airlines Logo
9:10 am - 6:55 pm
STL
-
HEL
25h 45m2 stops
United Airlines Logo
2:05 pm - 3:24 pm
HEL
-
STL
33h 19m2 stops
$495United Airlines
Wed, Jan 21 - Sun, Jan 25
Lufthansa Logo
3:50 pm - 1:10 pm
STL
-
HEL
13h 20m1 stop
Lufthansa Logo
6:55 am - 1:55 pm
HEL
-
STL
15h 00m1 stop
$496Lufthansa
Wed, Jan 21 - Sun, Jan 25
Delta Logo
11:23 am - 4:25 pm
STL
-
HEL
21h 02m2 stops
Delta Logo
7:00 am - 11:25 pm
HEL
-
STL
24h 25m2 stops
$497Delta
Wed, Jan 21 - Sun, Jan 25
United Airlines Logo
6:40 pm - 6:50 pm
STL
-
HEL
40h 10m2 stops
United Airlines Logo
12:45 pm - 10:58 pm
HEL
-
STL
18h 13m2 stops
$500United Airlines
Fri, Jan 30 - Tue, Feb 3
United Airlines Logo
3:50 pm - 1:05 pm
STL
-
HEL
13h 15m1 stop
United Airlines Logo
7:05 am - 3:15 pm
HEL
-
STL
40h 10m2 stops
$502United Airlines
Wed, Apr 15 - Tue, Apr 21
United Airlines Logo
3:30 pm - 1:05 pm
STL
-
HEL
13h 35m1 stop
United Airlines Logo
2:05 pm - 3:24 pm
HEL
-
STL
33h 19m2 stops
$503United Airlines
Wed, Apr 15 - Tue, Apr 21
American Airlines Logo
12:06 pm - 10:45 am
STL
-
HEL
14h 39m1 stop
American Airlines Logo
12:35 pm - 10:29 pm
HEL
-
STL
17h 54m1 stop
$506American Airlines
Fri, Jan 30 - Tue, Feb 3
United Airlines Logo
6:30 am - 1:05 pm
STL
-
HEL
22h 35m2 stops
United Airlines Logo
7:05 am - 3:15 pm
HEL
-
STL
40h 10m2 stops
$596United Airlines
Wed, Jan 21 - Sun, Jan 25
United Airlines Logo
9:57 am - 6:50 pm
STL
-
HEL
24h 53m2 stops
United Airlines Logo
6:55 am - 10:58 pm
HEL
-
STL
24h 03m2 stops
$699United 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.

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 Lufthansa ($488) and United Airlines ($495).

Good to know

Low seasonDecember
Cheapest flight$488
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 11064 reviews
7.2Comfort
6.9Entertainment
7.5Boarding
8.0Crew
6.5Food
Airline reviews

I requested a low sodium meal. Reason being, I take medicine for high blood pressure and I wear compression socks on long flights to help with leg swelling. Having less sodium in meals really helps me feel better on long flights. I received my initial low sodium meal after takeoff. Just before landing, the crew came through with the meal cart and offered me what was being served. I said no thank you and then noticed my low sodium meal in the meal cart, with my name and seat assignment on it. I motioned to the crew member, but he grabbed the meal cart and proceeded to move to the rear of the aircraft. He didn’t see me or other passengers who had attempted to get this attention. He was more concerned about completing meal service since we were due to land in under 45 minutes. I pressed the call light five times from my seat to receive help, but no crew member responded to me. So, I didn’t receive a second meal, one that I requested (the low sodium option). This led me to have a migraine from only eating one meal on an 11-hour flight. This is why I’m not a fan of flying US-based airlines overseas. The crew members continue to show the absolute worst customer service experience. I would not recommend flying American for overseas flights.

2.0 MediocreBrandyi, Dec 2025
LAX - HND
Read more American Airlines reviews

I requested a low sodium meal. Reason being, I take medicine for high blood pressure and I wear compression socks on long flights to help with leg swelling. Having less sodium in meals really helps me feel better on long flights. I received my initial low sodium meal after takeoff. Just before landing, the crew came through with the meal cart and offered me what was being served. I said no thank you and then noticed my low sodium meal in the meal cart, with my name and seat assignment on it. I motioned to the crew member, but he grabbed the meal cart and proceeded to move to the rear of the aircraft. He didn’t see me or other passengers who had attempted to get this attention. He was more concerned about completing meal service since we were due to land in under 45 minutes. I pressed the call light five times from my seat to receive help, but no crew member responded to me. So, I didn’t receive a second meal, one that I requested (the low sodium option). This led me to have a migraine from only eating one meal on an 11-hour flight. This is why I’m not a fan of flying US-based airlines overseas. The crew members continue to show the absolute worst customer service experience. I would not recommend flying American for overseas flights.

WiFi didn’t work the entire flight. Very disappointing. Minimal food and options - sadly the state of current affairs. All other aspects of the flight were fine.

Great flight - friendly and attentive team! Seats in coach were comfy, but a little cramped - but that is the case with all airlines ;)

The boarding by groups is pointless. The first two groups worked fine, but almost Noone boarded in goups three thru five leaving the vast majority boarding when group six was called. It defeated the purpose of spreading out the crowd.

I don’t know who decides what food to serve on these flights but I would be so embarrassed if I served this to anyone and call it food…

For whatever reason, the flight was not catered -we were told it would be a 45 minute delay waiting for catering - so no food. There were opened candy and peanuts in the seatback pocket. Flight landed early in DFW but due to the assigned gate not being available, we sat on the ground for 30 minutes waiting for the gate to open - making the flight actually arrive at the gate late.

Not great. Booked Extra seats and got nothing extra at all. It’s basically a big budget airline.

The pilot greased the landing and the crew was fantastic.

I bought wifi and most of the flight could not even use it my apps would just spin. I couldn't even listen to music. super frustrating.

delayed due to weather. Could not communicate with family since the wifi was broken

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

Information on your arrival and departure airports