$387 Find Cheap Flights from St. Louis to Finland - Compare and Save

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 7/19. 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

Wed, Aug 19 - Wed, Sep 2
Lufthansa Logo
12:59 pm - 12:05 pm
STL
-
HEL
15h 06m
2 stops
Lufthansa Logo
6:35 am - 1:25 pm
HEL
-
STL
14h 50m
1 stop
$830Lufthansa
Wed, Aug 19 - Wed, Sep 2
Lufthansa Logo
3:30 pm - 1:05 pm
STL
-
HEL
13h 35m
1 stop
Lufthansa Logo
6:35 am - 1:25 pm
HEL
-
STL
14h 50m
1 stop
$834Lufthansa
Wed, Aug 19 - Tue, Sep 1
Lufthansa Logo
12:59 pm - 12:05 pm
STL
-
HEL
15h 06m
2 stops
Lufthansa Logo
7:05 am - 1:25 pm
HEL
-
STL
14h 20m
1 stop
$835Lufthansa
Wed, Aug 19 - Wed, Sep 2
Lufthansa Logo
12:59 pm - 12:05 pm
STL
-
HEL
15h 06m
2 stops
Lufthansa Logo
6:35 am - 5:06 pm
HEL
-
STL
18h 31m
2 stops
$837Lufthansa
Wed, Aug 19 - Thu, Sep 3
Lufthansa Logo
12:59 pm - 12:05 pm
STL
-
HEL
15h 06m
2 stops
Lufthansa Logo
12:50 pm - 10:59 pm
HEL
-
STL
18h 09m
2 stops
$840Lufthansa
Tue, Aug 18 - Tue, Sep 1
Lufthansa Logo
12:59 pm - 1:35 am
STL
-
HEL
28h 36m
2 stops
Lufthansa Logo
7:05 am - 1:25 pm
HEL
-
STL
14h 20m
1 stop
$846Lufthansa
Tue, Aug 18 - Thu, Sep 3
Delta Logo
9:25 am - 4:40 pm
STL
-
HEL
23h 15m
2 stops
Delta Logo
7:15 am - 8:31 pm
HEL
-
STL
21h 16m
2 stops
$847Delta
Tue, Aug 18 - Wed, Sep 2
Delta Logo
3:50 pm - 4:40 pm
STL
-
HEL
16h 50m
2 stops
Delta Logo
7:00 am - 4:38 pm
HEL
-
STL
17h 38m
2 stops
$848Delta
Tue, Aug 18 - Fri, Sep 4
Lufthansa Logo
3:30 pm - 1:10 pm
STL
-
HEL
13h 40m
1 stop
Lufthansa Logo
6:55 am - 1:25 pm
HEL
-
STL
14h 30m
1 stop
$853Lufthansa
Mon, Aug 17 - Wed, Sep 2
Delta Logo
6:25 pm - 1:05 pm
STL
-
HEL
34h 40m
2 stops
Delta Logo
7:00 am - 3:10 pm
HEL
-
STL
16h 10m
2 stops
$858Delta
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.

What is the cheapest month to fly from St. Louis to Finland?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from St. Louis to Finland, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from St. Louis to Finland is January, when tickets cost $0 (return) on average. On the other hand, the most expensive months are August and July, when the average cost of round-trip tickets is $1,091 and $807 respectively.

Find deals

Good to know

Low seasonFebruary
Cheapest flight$387
Best time to beat the crowds with an average 38% drop in price.
Most popular time to fly and prices are also 38% lower on average.
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.

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

Information on your arrival and departure airports

St. Louis (STL)