St. Louis (STL) → Helsinki (HEL)
About St. Louis to Helsinki Flights
Discover the best flights from St. Louis to Helsinki, covering 7,534 km in approximately 9h 55m. St. Louis (STL) to Helsinki (HEL) is one of the major long-haul routes connecting United States and Finland. With 7 major airlines operating this route, travelers have plenty of options to choose from. Whether you're traveling for business or leisure, our comprehensive guide helps you find the best deals, understand seasonal price variations, and choose the right airline for your journey from St. Louis to Helsinki.
12-Month Price History
Flight prices from St. Louis to Helsinki vary significantly throughout the year. February typically offers the best deals with average prices around $1425, while July sees the highest prices, averaging $2388. Savvy travelers can save up to 40% by choosing their travel dates wisely.
Best Time to Fly
Cheapest Month
February
Save up to 40% on average
Most Expensive
July
Peak season pricing
Book in Advance
113 days
For best prices
Booking Tips
For the best prices on St. Louis to Helsinki flights, we recommend booking 112 days in advance. International flights typically see price increases as the departure date approaches, so early booking is advisable. Tuesday and Wednesday departures often offer the lowest fares, while Friday and Sunday flights tend to be more expensive due to business and leisure travel demand. Consider flying early morning or late evening for additional savings, as these off-peak times usually have lower demand.
Airlines Serving This Route
| Airline | Economy | Business | First |
|---|---|---|---|
Delta Air Lines DL | $1950 | $8260 | $10710 |
United Airlines UA | $2030 | $7110 | $12450 |
Finnair AY | $2190 | $8420 | $11160 |
American Airlines AA | $2220 | $6760 | $11690 |
Air France AF | $2540 | $8760 | $11130 |
Lufthansa LH | $2590 | $8280 | $14450 |
British Airways BA | $2620 | $7770 | $13360 |
Delta Air Lines
DL
Economy
$1950
Business
$8260
First
$10710
United Airlines
UA
Economy
$2030
Business
$7110
First
$12450
Finnair
AY
Economy
$2190
Business
$8420
First
$11160
American Airlines
AA
Economy
$2220
Business
$6760
First
$11690
Air France
AF
Economy
$2540
Business
$8760
First
$11130
Lufthansa
LH
Economy
$2590
Business
$8280
First
$14450
British Airways
BA
Economy
$2620
Business
$7770
First
$13360
Prices shown are estimates based on historical data. Actual prices may vary based on dates, availability, and current promotions.
Alternative Flight Options
St. Louis → Tallinn
St. Louis Lambert International (STL) to Tallinn Lennart Meri (TLL)
Distance: 7,594 km
Average price: $1611
St. Louis → Tallinn
St. Louis Lambert International (STL) to Tallinn (TLL)
Distance: 7,594 km
Average price: $1611
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Frequently Asked Questions
How long is the flight from St. Louis to Helsinki?
The flight time from St. Louis (STL) to Helsinki (HEL) is approximately 9 hours and 55 minutes. This duration is for direct flights and may vary depending on aircraft type, weather conditions, and air traffic.
What is the distance between St. Louis and Helsinki?
The aerial distance between St. Louis and Helsinki is 7,534 kilometers (4,681 miles). This is the straight-line distance, which is used to calculate flight times.
Which airlines fly from St. Louis to Helsinki?
Several airlines operate flights between St. Louis and Helsinki, including Finnair, American Airlines, Delta Air Lines and 4 more airlines. Most flights on this route include one or more stops.
What is the cheapest month to fly from St. Louis to Helsinki?
Based on historical data, February typically offers the lowest airfares for flights from St. Louis to Helsinki. However, prices can vary based on holidays, events, and airline promotions. We recommend checking our price calendar for the most up-to-date information.
How far in advance should I book my flight to Helsinki?
For the best prices on St. Louis to Helsinki flights, we recommend booking 139 days in advance. International flights generally require earlier booking than domestic routes.
Do I need a visa to travel from St. Louis to Helsinki?
Visa requirements depend on your nationality and the purpose of your visit. Citizens of United States traveling to Finland should check the latest visa requirements. Visit our partner site visarequirements.io for detailed visa information.
What is the time difference between St. Louis and Helsinki?
St. Louis operates on America/Chicago time zone, while Helsinki is in the Europe/Helsinki time zone. For current time differences and to plan your schedule, visit our partner site timezig.com for accurate timezone conversions.