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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 May , June 2026

27 May - 09 Jun $ 1,365.00
STL
St Louis
Frontier Airlines
3 STOPS
HEL
Helsinki
HEL
Helsinki
Frontier Airlines
3 STOPS
STL
St Louis
Pick dates
27 May - 10 Jun $ 1,387.00
STL
St Louis
Frontier Airlines
3 STOPS
HEL
Helsinki
HEL
Helsinki
Frontier Airlines
2 STOPS
STL
St Louis
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22 May - 10 Jun $ 1,461.00
STL
St Louis
Frontier Airlines
2 STOPS
HEL
Helsinki
HEL
Helsinki
Frontier Airlines
2 STOPS
STL
St Louis
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Last minute flights from St Louis to Helsinki

28 May - 01 Jun $ 1,463.00
STL
St Louis
Frontier Airlines
3 STOPS
HEL
Helsinki
HEL
Helsinki
Frontier Airlines
3 STOPS
STL
St Louis
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27 May - 01 Jun $ 1,619.00
STL
St Louis
Frontier Airlines
3 STOPS
HEL
Helsinki
HEL
Helsinki
Frontier Airlines
3 STOPS
STL
St Louis
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22 May - 01 Jun $ 1,698.00
STL
St Louis
Frontier Airlines
2 STOPS
HEL
Helsinki
HEL
Helsinki
Frontier Airlines
3 STOPS
STL
St Louis
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One-way flights to Helsinki from St Louis

1:13 PM - 9:35 AM
United Airlines
2 Stops
15h 52m
STL - HEL
$ 718
Kiwi
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7:05 PM - 9:00 PM
United Airlines
2 Stops
21h 25m
STL - HEL
$ 718
Kiwi
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3:30 PM - 9:35 AM
United Airlines
1 Stops
13h 35m
STL - HEL
$ 875
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.