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$912+ Cheap flights from Klagenfurt (KLU) to Denver (DEN)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/23. Fares are subject to change and may not be available on all flights or dates of travel.
KLU — DEN
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheap flight deals from Klagenfurt to Denver

Discover tips and strategies to find the most affordable flight options for your journey from Klagenfurt (KLU) to Denver (DEN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 11, 2025.

Round-trip from

$912
(Austrian Airlines)
From Klagenfurt to Denver Intl
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Find flight deals from Klagenfurt to Denver

Cheapest flights from Klagenfurt to Denver
Explore the most affordable flight options available from Klagenfurt to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This Austrian Airlines deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Austrian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/233:00 pmKLU - DEN
2 stops33h 35mAustrian Airlines
Mon 10/276:35 pmDEN - KLU
2 stops45h 50mAustrian Airlines
Deal found 9/8$912
This Lufthansa deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/233:00 pmKLU - DEN
2 stops30h 45mLufthansa
Mon 10/279:20 pmDEN - KLU
2 stops33h 35mLufthansa
Deal found 9/10$918

Cheapflights Fare Finder

 
Customize your flight search to find flights from Klagenfurt to Denver that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 11, 2025.
Use the filters below to find and compare flights from Klagenfurt to Denver that are best for you.

Fly from

Klagenfurt

Fly to

Denver

Route

Depart

Return

Price

KlagenfurtDenver

KLU - DEN

KLUDEN

Klagenfurt

Thu 10/23

3:00 pm-4:35 pm

2 stops33h 35m

Denver Intl

Mon 10/27

6:35 pm-11:25 pm

2 stops45h 50m

$912

KlagenfurtDenver

KLU - DEN

KLUDEN

Klagenfurt

Thu 10/23

3:00 pm-1:45 pm

2 stops30h 45m

Denver Intl

Mon 10/27

9:20 pm-1:55 pm

2 stops33h 35m

$918

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/8

Best time to book a flight from Klagenfurt to Denver

Have a flexible travel schedule? Discover the best time to fly to Denver from Klagenfurt with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Related info for your journey

Find useful and relevant information for your journey from Klagenfurt to Denver. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Klagenfurt to Denver?

    A quick flight from Klagenfurt to Denver can take about 30h 45m. Austrian Airlines provides one of the quickest options available for as low as $918. Klagenfurt and Denver are separated by a distance of 5375 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • Can I find deals for flights from Klagenfurt to Denver that include hotel bookings?

    Yes. In addition to deals on Klagenfurt to Denver flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Klagenfurt to Denver?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Klagenfurt to Denver.

  • Can I find deals for business class flights from Klagenfurt to Denver?

    Yes. Cheapflights offers flight deals from Klagenfurt to Denver by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Klagenfurt to Denver?

    Currently, October is the cheapest month in which you can book a flight from Klagenfurt to Denver (average of $197). Flying from Klagenfurt to Denver in March is currently the most expensive (average of $278). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Denver?

Book flights to Denver if you plan to visit one of these locations
Westminster
Black Hawk
Golden
Winter Park
Broomfield
Greeley
Lone Tree
Lakewood
Cripple Creek
Thornton
Silverthorne
Frisco
Manitou Springs
Fort Morgan
Glendale
Wheat Ridge
Brighton
Longmont
Idaho Springs
Parker

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