$727 Find Cheap Flights from St. Louis to Finland - Compare and Save

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 11/23. 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, Nov 23 - Tue, Dec 1
American Airlines Logo
6:00 am - 11:10 amSTL  Lambert-St Louis-HEL Helsinki-Vantaa
21h 10m1 stop Dallas/Fort Worth
American Airlines Logo
12:30 pm - 10:01 pmHEL  Helsinki-Vantaa-STL Lambert-St Louis
17h 31m1 stop Dallas/Fort Worth
$727American Airlines
Mon, Nov 23 - Tue, Dec 1
American Airlines Logo
1:20 pm - 1:55 pmSTL  Lambert-St Louis-HEL Helsinki-Vantaa
16h 35m2 stops Chicago O'Hare Intl New York John F Kennedy Intl
American Airlines Logo
12:30 pm - 11:35 pmHEL  Helsinki-Vantaa-STL Lambert-St Louis
19h 05m1 stop Dallas/Fort Worth
$731American Airlines
Mon, Nov 23 - Tue, Dec 1
Lufthansa Logo
1:08 pm - 12:55 pmSTL  Lambert-St Louis-HEL Helsinki-Vantaa
15h 47m2 stops Chicago O'Hare Intl Frankfurt am Main
Lufthansa Logo
7:00 am - 9:13 pmHEL  Helsinki-Vantaa-STL Lambert-St Louis
22h 13m2 stops Frankfurt am Main Chicago O'Hare Intl
$731Lufthansa
Tue, Dec 8 - Mon, Jan 11
Multiple Airlines Logo
7:04 pm - 6:45 pmSTL  Lambert-St Louis-HEL Helsinki-Vantaa
15h 41m2 stops Chicago O'Hare Intl Munich Franz Josef Strauss
Multiple Airlines Logo
12:35 pm - 3:26 pmHEL  Helsinki-Vantaa-STL Lambert-St Louis
58h 51m2 stops Munich Franz Josef Strauss Toronto Pearson Intl
$745Multiple Airlines
Mon, Jan 25 - Fri, Jan 29
United Airlines Logo
5:34 pm - 6:45 pmSTL  Lambert-St Louis-HEL Helsinki-Vantaa
41h 11m2 stops Chicago O'Hare Intl Munich Franz Josef Strauss
United Airlines Logo
12:35 pm - 9:13 pmHEL  Helsinki-Vantaa-STL Lambert-St Louis
16h 38m2 stops Munich Franz Josef Strauss Chicago O'Hare Intl
$748United Airlines
Mon, Jan 11 - Sat, Jan 16
Finnair Logo
11:55 am - 11:10 amSTL  Lambert-St Louis-HEL Helsinki-Vantaa
15h 15m1 stop Dallas/Fort Worth
Finnair Logo
12:30 pm - 7:29 pmHEL  Helsinki-Vantaa-STL Lambert-St Louis
14h 59m1 stop Dallas/Fort Worth
$757Finnair
Mon, Jan 11 - Sat, Jan 16
American Airlines Logo
12:01 pm - 1:55 pmSTL  Lambert-St Louis-HEL Helsinki-Vantaa
17h 54m2 stops Boston Logan Intl New York John F Kennedy Intl
American Airlines Logo
12:30 pm - 10:59 pmHEL  Helsinki-Vantaa-STL Lambert-St Louis
18h 29m1 stop Dallas/Fort Worth
$781American Airlines
Mon, Jan 25 - Fri, Jan 29
Finnair Logo
11:55 am - 11:10 amSTL  Lambert-St Louis-HEL Helsinki-Vantaa
15h 15m1 stop Dallas/Fort Worth
Finnair Logo
12:30 pm - 7:29 pmHEL  Helsinki-Vantaa-STL Lambert-St Louis
14h 59m1 stop Dallas/Fort Worth
$989Finnair
Sat, Sep 19 - Sat, Sep 26
American Airlines Logo
8:30 am - 10:45 amSTL  Lambert-St Louis-HEL Helsinki-Vantaa
18h 15m1 stop Dallas/Fort Worth
American Airlines Logo
8:00 am - 8:44 pmHEL  Helsinki-Vantaa-STL Lambert-St Louis
20h 44m2 stops London Heathrow Chicago O'Hare Intl
$1,016American Airlines
Sat, Dec 26 - Mon, Jan 4
Finnair Logo
6:56 pm - 11:10 amSTL  Lambert-St Louis-HEL Helsinki-Vantaa
32h 14m1 stop Dallas/Fort Worth
Finnair Logo
12:30 pm - 9:26 amHEL  Helsinki-Vantaa-STL Lambert-St Louis
28h 56m1 stop Dallas/Fort Worth
$1,248Finnair
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 December and August, when the average cost of round-trip tickets is $1,744 and $1,091 respectively.

Find deals

Good to know

Low season

February

Cheapest flight

$727
Best time to beat the crowds with an average 36% drop in price.
Most popular time to fly and prices are also 36% 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)