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Cheap flights from Denver (DEN) to Klagenfurt (KLU)

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How to find the cheapest flight from Denver (DEN) to Klagenfurt (KLU)

How to find the cheapest flight from Denver (DEN) to Klagenfurt (KLU)
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How to find the cheapest flight from Denver (DEN) to Klagenfurt (KLU)
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How to find the cheapest flight from Denver (DEN) to Klagenfurt (KLU)
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Cheap flights from Denver to Klagenfurt in April , May 2026

21 Apr - 09 May $ 1,469.00
DEN
Denver
Frontier Airlines
3 STOPS
KLU
Klagenfurt
KLU
Klagenfurt
Frontier Airlines
3 STOPS
DEN
Denver
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21 Apr - 07 May $ 1,471.00
DEN
Denver
Frontier Airlines
3 STOPS
KLU
Klagenfurt
KLU
Klagenfurt
Frontier Airlines
3 STOPS
DEN
Denver
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21 Apr - 28 May $ 1,497.00
DEN
Denver
Frontier Airlines
3 STOPS
KLU
Klagenfurt
KLU
Klagenfurt
Frontier Airlines
3 STOPS
DEN
Denver
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Last minute flights from Denver to Klagenfurt

16 Apr - 30 Apr $ 1,140.00
DEN
Denver
Turkish Airlines
2 STOPS
KLU
Klagenfurt
KLU
Klagenfurt
Turkish Airlines
2 STOPS
DEN
Denver
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21 Apr - 30 Apr $ 1,617.00
DEN
Denver
Alaska Airlines
3 STOPS
KLU
Klagenfurt
KLU
Klagenfurt
Alaska Airlines
3 STOPS
DEN
Denver
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21 Apr - 30 Apr $ 1,663.00
DEN
Denver
Frontier Airlines
3 STOPS
KLU
Klagenfurt
KLU
Klagenfurt
Frontier Airlines
3 STOPS
DEN
Denver
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One-way flights to Klagenfurt from Denver

7:15 AM - 10:35 PM
Austrian Airlines
3 Stops
32h 5m
DEN - KLU
$ 750
Kiwi
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7:15 AM - 10:35 PM
Austrian Airlines
3 Stops
32h 5m
DEN - KLU
$ 750
Kiwi
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4:40 PM - 10:35 PM
Austrian Airlines
3 Stops
22h 40m
DEN - KLU
$ 769
Kiwi
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How to find the cheapest flight from Denver (DEN) to Klagenfurt (KLU)

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