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

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0 Children (2~11)
0 Infants (0~2)
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How to find the cheapest flight from St Louis (STL) to Helsinki (HEL)

How to find the cheapest flight from St Louis (STL) to Helsinki (HEL)
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How to find the cheapest flight from St Louis (STL) to Helsinki (HEL)
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How to find the cheapest flight from St Louis (STL) to Helsinki (HEL)
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Cheap flights from St Louis to Helsinki in September , October 2026

29 Sep - 30 Oct $ 1,366.00
STL
St Louis
Frontier Airlines
1 STOPS
HEL
Helsinki
HEL
Helsinki
Frontier Airlines
2 STOPS
STL
St Louis
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29 Sep - 07 Oct $ 2,697.00
STL
St Louis
Air Canada
1 STOPS
HEL
Helsinki
HEL
Helsinki
Air Canada
2 STOPS
STL
St Louis
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29 Sep - 07 Oct $ 2,710.00
STL
St Louis
Air Canada
1 STOPS
HEL
Helsinki
HEL
Helsinki
Air Canada
2 STOPS
STL
St Louis
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Last minute flights from St Louis to Helsinki

29 Sep - 01 Oct $ 1,664.00
STL
St Louis
Air Canada
1 STOPS
HEL
Helsinki
HEL
Helsinki
Air Canada
3 STOPS
STL
St Louis
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29 Sep - 01 Oct $ 1,676.00
STL
St Louis
Air Canada
1 STOPS
HEL
Helsinki
HEL
Helsinki
Air Canada
3 STOPS
STL
St Louis
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29 Sep - 01 Oct $ 1,794.00
STL
St Louis
Frontier Airlines
1 STOPS
HEL
Helsinki
HEL
Helsinki
Frontier Airlines
3 STOPS
STL
St Louis
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One-way flights to Helsinki from St Louis

5:36 PM - 3:25 PM
United Airlines
2 Stops
41h 19m
STL - HEL
$ 558
Kiwi
Pick dates
5:18 PM - 9:30 PM
Finnair
1 Stops
12h 57m
STL - HEL
$ 602
Kiwi
Pick dates
12:46 PM - 4:50 PM
Finnair
1 Stops
14h 14m
STL - HEL
$ 614
Kiwi
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How to find the cheapest flight from St Louis (STL) to Helsinki (HEL)

Related info for your journey
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How to find the cheapest flight from St Louis (STL) to Helsinki (HEL)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.
How to find the cheapest flight from St Louis (STL) to Helsinki (HEL)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.