$481+ Cheap flights from St. Louis (STL) to Finland
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/3. Fares are subject to change and may not be available on all flights or dates of travel.
Find cheap flights from St. Louis to Finland with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from St. Louis to Finland
Keep the following information in mind while searching for St. Louis to Finland flight deals. Data was last updated June 12, 2025.
Round-trip from | $481 (Finnair) |
|---|---|
Popular in | May |
Cheapest in | November |
Average price | $1,228 |
Find flight deals from St. Louis to Finland
Cheapest flights from St. Louis to FinlandExplore the most affordable flight options available from St. Louis to Finland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.
Explore the most affordable flight options available from St. Louis to Finland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.
This Finnair deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This American Airlines deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This United Airlines deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Orbitz deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Delta deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Air Canada deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Cheapflights Fare Finder
Customize your flight search to find flights from St. Louis to Finland that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 12, 2025.
Use the filters below to find and compare flights from St. Louis to Finland that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
St. LouisHelsinki
STL - HEL
STLHEL
Lambert-St Louis
Wed 12/3
5:26 am-10:45 am
1 stop21h 19m
Helsinki-Vantaa
Tue 12/9
12:30 pm-6:15 pm
1 stop13h 45m
St. LouisHelsinki
STL - HEL
STLHEL
Lambert-St Louis
Wed 12/3
12:54 pm-1:55 pm
2 stops17h 01m
Helsinki-Vantaa
Tue 12/9
12:30 pm-11:05 pm
2 stops18h 35m
St. LouisHelsinki
STL - HEL
STLHEL
Lambert-St Louis
Wed 12/3
4:30 pm-6:40 pm
2 stops18h 10m
Helsinki-Vantaa
Tue 12/9
7:05 am-10:06 pm
3 stops23h 01m
St. LouisHelsinki
STL - HEL
STLHEL
Lambert-St Louis
Wed 9/24
3:59 pm-2:20 pm
2 stops38h 21m
Helsinki-Vantaa
Sun 9/28
9:05 pm-11:48 pm
2 stops34h 43m
St. LouisHelsinki
STL - HEL
STLHEL
Lambert-St Louis
Thu 7/10
5:23 pm-5:40 pm
2 stops16h 17m
Helsinki-Vantaa
Thu 7/17
6:40 am-8:36 pm
2 stops21h 56m
St. LouisHelsinki
STL - HEL
STLHEL
Lambert-St Louis
Wed 12/3
1:27 pm-4:30 pm
3 stops19h 03m
Helsinki-Vantaa
Tue 12/9
7:05 am-7:25 pm
3 stops20h 20m
Best time to book a flight from St. Louis to Finland
Have a flexible travel schedule? Discover the best time to fly to Finland from St. Louis with our price prediction graph.
Cheapflights Insights
Everything you need to know about your flight from St. Louis to Finland
What is the cheapest month to book a flight from St. Louis to Finland?
Currently, November is the cheapest month in which you can book a flight from St. Louis to Finland (average of $444). Flying from St. Louis to Finland in June is currently the most expensive (average of $1,081). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from STL to FI?
Find hourly flight availability from St. Louis to Finland. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 12, 2025.
When flying from St. Louis to Finland, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
Rainfall in Finland by month
Plan your trip to Finland by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in Finland ranges from 1.2 - 2.8 inches per month. August is typically the wettest month, when rainfall can reach 2.8 in. February is typically the driest time to visit Finland when rainfall is around 1.2 in.
Temperature in Finland by month
Plan your trip to Finland by taking into account the average temperature totals by month.
If weather is an important factor for your trip to Finland, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 60.8 F. Travelers looking to avoid the cold should look outside of February, when temperatures are typically at their lowest (around 21.2 F).
Reviews of airlines servicing Finland
Get insights into the airlines that provide service to Finland. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Finland. Reviews last updated June 12, 2025.
Food
Boarding
Comfort
Overall
Entertainment
Crew
Reviews
Kim,May 2025
PIH - SLC
Food
Boarding
Comfort
Overall
Entertainment
Crew
Reviews
Kim,May 2025
PIH - SLC
Food
Boarding
Comfort
Overall
Entertainment
Crew
Reviews
Kim,May 2025
PIH - SLC
Food
Boarding
Comfort
Overall
Entertainment
Crew
Reviews
Kim,May 2025
PIH - SLC
Food
Boarding
Comfort
Overall
Entertainment
Crew
Reviews
Kim,May 2025
PIH - SLC
Food
Boarding
Comfort
Overall
Entertainment
Crew
Reviews
Kim,May 2025
PIH - SLC
Related info for your journey
Find useful and relevant information for your journey from St. Louis to Finland. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for St. Louis to Finland
See prices for flight routes from nearby airports that may be better suited for you.
Top 5 airlines flying from St. Louis to Finland
Discover the top 5 airlines that operate flights from St. Louis to Finland. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 12, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$479 | Average$588 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$495 | Average$528 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$506 | Average$800 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$533 | Average$803 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$576 | Average$576 | FlexibilityNo cancel fee | On-time69% |