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$957+ 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 1/30. Fares are subject to change and may not be available on all flights or dates of travel.
KLU — DEN
Jan 15 — Jan 221
Thu 1/15
Thu 1/22
1 adult, Economy
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Cheap flight deals from Klagenfurt to Denver

Best flights from Klagenfurt to Denver
Discover carefully curated flight deals from Klagenfurt to Denver that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 16, 2025.

This Booking.com deal was found by Cheapflights users on 12/16. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/303:15 pmKLU - DEN
2 stops31h 20mLufthansa
Fri 2/64:20 pmDEN - KLU
2 stops37h 30mLufthansa
Deal found 12/16$957
This Mytrip deal was found by Cheapflights users on 12/16. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/303:15 pmKLU - DEN
3 stops31h 20mMultiple Airlines
Fri 2/611:15 amDEN - KLU
2 stops15h 15mMultiple Airlines
Deal found 12/16$1,580

Find 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 December 16, 2025.

Round-trip from

$957
(Booking.com)
From Klagenfurt to Denver Intl
Search Deals

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 December 16, 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

Fri 1/30

3:15 pm-2:35 pm

2 stops31h 20m

Denver Intl

Fri 2/6

4:20 pm-1:50 pm

2 stops37h 30m

$957

KlagenfurtDenver

KLU - DEN

KLUDEN

Klagenfurt

Fri 1/30

3:15 pm-2:35 pm

3 stops31h 20m

Denver Intl

Fri 2/6

11:15 am-10:30 am

2 stops15h 15m

$1,580

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/16

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.

Cheapflights Insights

Everything you need to know about your flight from Klagenfurt to Denver

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

Currently, June is the cheapest month in which you can book a flight from Klagenfurt to Denver (average of $745). Flying from Klagenfurt to Denver in November is currently the most expensive (average of $2,342). 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.

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 31h 20m. Lufthansa provides one of the quickest options available for as low as $957. Klagenfurt and Denver are separated by a distance of 5375 mi.

  • 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, June is the cheapest month in which you can book a flight from Klagenfurt to Denver (average of $745). Flying from Klagenfurt to Denver in November is currently the most expensive (average of $2,342). 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
Black Hawk
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