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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 August , September 2026

30 Aug - 21 Sep $ 1,107.00
STL
St Louis
Frontier Airlines
3 STOPS
HEL
Helsinki
HEL
Helsinki
Frontier Airlines
3 STOPS
STL
St Louis
Pick dates
30 Aug - 30 Sep $ 1,115.00
STL
St Louis
Frontier Airlines
3 STOPS
HEL
Helsinki
HEL
Helsinki
Frontier Airlines
3 STOPS
STL
St Louis
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30 Aug - 21 Sep $ 1,182.00
STL
St Louis
Frontier Airlines
2 STOPS
HEL
Helsinki
HEL
Helsinki
Frontier Airlines
3 STOPS
STL
St Louis
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Last minute flights from St Louis to Helsinki

25 Aug - 31 Aug $ 1,655.00
STL
St Louis
Air Canada
2 STOPS
HEL
Helsinki
HEL
Helsinki
Air Canada
2 STOPS
STL
St Louis
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22 Aug - 31 Aug $ 1,683.00
STL
St Louis
Air Canada
2 STOPS
HEL
Helsinki
HEL
Helsinki
Air Canada
2 STOPS
STL
St Louis
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25 Aug - 31 Aug $ 1,689.00
STL
St Louis
Air Canada
2 STOPS
HEL
Helsinki
HEL
Helsinki
Air Canada
2 STOPS
STL
St Louis
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One-way flights to Helsinki from St Louis

2:10 PM - 4:00 PM
Icelandair
3 Stops
24h 20m
STL - HEL
$ 518
Kiwi
Pick dates
12:10 PM - 12:45 PM
Norwegian Air Sweden
2 Stops
19h 10m
STL - HEL
$ 593
Kiwi
Pick dates
2:40 PM - 12:45 PM
SAS
2 Stops
16h 40m
STL - HEL
$ 622
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.