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Cheap flights from St Louis (STL) to Klagenfurt (KLU)

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1 Adults (11+)
0 Children (2~11)
0 Infants (0~2)
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How to find the cheapest flight from St Louis (STL) to Klagenfurt (KLU)

How to find the cheapest flight from St Louis (STL) to Klagenfurt (KLU)
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How to find the cheapest flight from St Louis (STL) to Klagenfurt (KLU)
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How to find the cheapest flight from St Louis (STL) to Klagenfurt (KLU)
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Cheap flights from St Louis to Klagenfurt in May , June 2026

31 May - 04 Jun $ 1,994.00
STL
St Louis
United Airlines
2 STOPS
KLU
Klagenfurt
KLU
Klagenfurt
United Airlines
2 STOPS
STL
St Louis
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31 May - 04 Jun $ 1,998.00
STL
St Louis
United Airlines
2 STOPS
KLU
Klagenfurt
KLU
Klagenfurt
United Airlines
2 STOPS
STL
St Louis
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31 May - 04 Jun $ 2,033.00
STL
St Louis
Austrian Airlines
2 STOPS
KLU
Klagenfurt
KLU
Klagenfurt
Austrian Airlines
2 STOPS
STL
St Louis
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Last minute flights from St Louis to Klagenfurt

25 May - 01 Jun $ 2,257.00
STL
St Louis
Frontier Airlines
3 STOPS
KLU
Klagenfurt
KLU
Klagenfurt
Frontier Airlines
3 STOPS
STL
St Louis
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25 May - 01 Jun $ 2,356.00
STL
St Louis
Frontier Airlines
3 STOPS
KLU
Klagenfurt
KLU
Klagenfurt
Frontier Airlines
3 STOPS
STL
St Louis
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19 May - 01 Jun $ 2,733.00
STL
St Louis
Frontier Airlines
3 STOPS
KLU
Klagenfurt
KLU
Klagenfurt
Frontier Airlines
3 STOPS
STL
St Louis
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One-way flights to Klagenfurt from St Louis

5:00 PM - 1:20 PM
Austrian Airlines
3 Stops
38h
STL - KLU
$ 1,136
Kiwi
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4:19 PM - 10:35 PM
Austrian Airlines
3 Stops
24h 1m
STL - KLU
$ 1,255
Kiwi
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9:08 AM - 2:10 PM
Austrian Airlines
3 Stops
22h 42m
STL - KLU
$ 1,309
Kiwi
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How to find the cheapest flight from St Louis (STL) to Klagenfurt (KLU)

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