Cheap flights from St Louis (STL) to Helsinki (HEL)

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How to find the cheapest flight from
St Louis (STL) to Helsinki (HEL)

All the information you need to plan the best STL to HEL flight in 2021: compare St Louis to Helsinki flight prices with the expected peak season, weather and rainfall in Helsinki.
What is the cheapest day to fly round-trip from St Louis to Helsinki?

Users have found that leaving on a Tuesday can be a cost-effective option. It’s possible to save up to 149% on your flight compared to booking on days when demand is much higher.

When is the cheapest time to fly from St Louis to Helsinki (STL - HEL)?

When flying from St Louis to Helsinki, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 33% versus a flight at noon.

St Louis to Helsinki 2021 flight deals

Cheap flights to Helsinki from St Louis found for this year
10 Nov - 14 Nov
$1,105pp
STL
Lambert-St Louis
American Airlines
   
2 STOPS
HEL
Helsinki Helsinki-Vantaa
HEL
Helsinki Helsinki-Vantaa
American Airlines
   
2 STOPS
STL
Lambert-St Louis
10 Nov - 14 Nov
$1,116pp
STL
Lambert-St Louis
Air France
   
2 STOPS
HEL
Helsinki Helsinki-Vantaa
HEL
Helsinki Helsinki-Vantaa
Air France
   
2 STOPS
STL
Lambert-St Louis
10 Nov - 14 Nov
$1,135pp
STL
Lambert-St Louis
Air France
   
2 STOPS
HEL
Helsinki Helsinki-Vantaa
HEL
Helsinki Helsinki-Vantaa
Air France
   
2 STOPS
STL
Lambert-St Louis

Related info for your journey

Useful info, stats and facts about <span class="emphasized">St Louis</span> to <span class="emphasized">Helsinki</span> flights.

Flight FAQs

From St Louis to Helsinki

Are flight prices decreasing from St Louis to Helsinki due to COVID-19 (coronavirus)?

At this time, Cheapflights has noticed price decreases for many domestic flights due to COVID-19. Travel is not necessarily recommended at this time, and flights may be prone to cancellation: please check with local authorities in both St Louis and Helsinki for travel alerts, and be sure to review the airline's cancellation policy and travel advisories before booking. For more information, please view our post on what to know about COVID-19 (coronavirus) and travel.

Which airlines flying from Lambert-St Louis to Helsinki Helsinki-Vantaa have flexible cancellations due to COVID-19?

American Airlines, SAS, and Finnair are some of the carriers that may have flexible cancellation policies. You can use our site to filter for other airlines that may also have this kind of flexibility.

Does it rain more in St Louis or Helsinki?

When traveling, we recommend packing in preparation to handle common weather conditions. The rainfall in St Louis is typically greater than that of Helsinki. We can gather that this will continue over the next 18 days.

Is St Louis weather warmer or cooler than Helsinki?

Expect the weather to be around 90 °F on average in July. As the temperature peaks, try to get your plans done early, as flight price and availability will have an impact on your travels. The climate in Helsinki is generally colder than in St Louis.

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Alternative routes for St Louis to Helsinki

See prices for flight routes from nearby airports that may be better suited for you.

Destination information for Helsinki

Things to know before you go - useful duration and weather info for your trip from St Louis to Helsinki.
Today's exchange rate
$1 = €0.83
Average temperature for May in Helsinki
51.8 °F
Avg rainfall for May in Helsinki
1.2 ″

Airports servicing St. Louis

Airports servicing Helsinki

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