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$908+ 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
Jul 8 — Jul 151
Tue 7/8
Tue 7/15
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 July 3, 2025.

Round-trip from

$908
(Lufthansa)
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 July 3, 2025.

This Lufthansa deal was found by Cheapflights users on 6/30. 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 10/235:45 amKLU - DEN
2 stops15h 50mLufthansa
Mon 10/275:20 pmDEN - KLU
2 stops47h 05mLufthansa
Deal found 6/30$908

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 July 3, 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

5:45 am-1:35 pm

2 stops15h 50m

Denver Intl

Mon 10/27

5:20 pm-11:25 pm

2 stops47h 05m

$908

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/30

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.

Reviews of airlines servicing Denver

Get insights into the airlines that provide service to Denver. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Denver. Reviews last updated July 3, 2025.
Read through reviews of airlines operating flights from Klagenfurt to Denver, such as Lufthansa. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Lufthansa
6.8
Okay
7,207 reviews

Comfort

6.8

Boarding

7.0

Overall

6.8

Entertainment

6.4

Crew

7.6

Food

6.3

Reviews

1 / 20
8.0
Excellent

Anonymous,Jan 2025

FRA - TPA

I had ordered a gluten-free meal through you I double triple checked that through you got screamed at by one of your representatives. She yelled at me and said that she had ordered the mail, she had chosen my seat, and made sure that all my baggage is were paid for. That was a lie. My experience with discover airlines in and of itself was GOOD but your representative was out of line did not do anything that she screamed at me and told me she did and I literally had to call the airlines myself to get my seat selected to double check on my gluten-free meal which still was not on board and to pay for my bags which I thought that I paid for all of them until I got to the airport and I still had to pay for my check back. So cheap flights I will never use you again.
Lufthansa
6.8
Okay
7,207 reviews
Lufthansa
6.8
Okay
7,207 reviews

Comfort

6.8

Boarding

7.0

Overall

6.8

Entertainment

6.4

Crew

7.6

Food

6.3

Reviews

1 / 20
8.0
Excellent

Anonymous,Jan 2025

FRA - TPA

I had ordered a gluten-free meal through you I double triple checked that through you got screamed at by one of your representatives. She yelled at me and said that she had ordered the mail, she had chosen my seat, and made sure that all my baggage is were paid for. That was a lie. My experience with discover airlines in and of itself was GOOD but your representative was out of line did not do anything that she screamed at me and told me she did and I literally had to call the airlines myself to get my seat selected to double check on my gluten-free meal which still was not on board and to pay for my bags which I thought that I paid for all of them until I got to the airport and I still had to pay for my check back. So cheap flights I will never use you again.

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.

  • 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 Klagenfurt?

Book flights to Klagenfurt if you plan to visit one of these locations
Westminster
Black Hawk
Winter Park
Lakewood
Cripple Creek
Golden
Brighton
Silverthorne
Thornton
Frisco
Broomfield
Grand Lake
Manitou Springs
Central City
Fort Morgan
Glendale
Copper Mountain
Wheat Ridge
Longmont
Idaho Springs

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