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Find cheap one-way flights from Klagenfurt to Barcelona starting at US$126.

We've found these cheap flights for you. You can book one-way or round-trip flight tickets.

  • One way
  • Round-trip

Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.

When is the cheapest time to book flights from Klagenfurt to Barcelona?

We monitor flight fares to help you find the best deals effortlessly

Displayed prices are calculated based on the cheapest average weekly prices of the corresponding route on Trip.com.
Cheapest airlines flights from Klagenfurt to Barcelona

Compare prices, find the option that best suits your travel needs, and enjoy a comfortable journey with a trusted airline.

Ryanair
From US$126
Austrian Airlines
From US$171
Lufthansa
From US$179
ANA airlines

Find more flights and airlines

Find cheap flights from Klagenfurt to Barcelona by different airports

Searching for potential routes that might be cheaper and faster? Check out these alternative flights from Klagenfurt to Barcelona.

  • Cheapest
    Ryanair
    KLU
    21:05
    20h 25m
    1 transfer
    BCN
    17:30
    Klagenfurt Airport - Barcelona Airport
    Sun, Apr 7Ryanair
    US$126
  • Ryanair
    KLU
    21:05
    20h 25m
    1 transfer
    BCN
    17:30
    Klagenfurt Airport - Barcelona Airport
    Sun, Apr 7Ryanair
    US$126
    Find More Flights

Frequently Asked Questions

  • When are flight tickets from Klagenfurt (KLU) to Barcelona (BCN) the cheapest?

    Airlines adjust prices for flights from Klagenfurt to Barcelona based on the departure date and time of your selection. By analyzing data from all airlines, we've discovered that on Trip.com, you can find the lowest flight prices on Tuesdays, Wednesdays, and Saturdays.
  • How much do flights from Klagenfurt (KLU) to Barcelona (BCN) cost?

    According to Trip.com's data, the lowest price is around $649.

Klagenfurt to Barcelona Flight Information

Cheapest nonstop flight price

$125

Off-season for travel

October

Peak season for travel

June