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$748+ Cheap flights from Klagenfurt (KLU) to Philadelphia (PHL)

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 9/27. Fares are subject to change and may not be available on all flights or dates of travel.
KLU — PHL
Aug 19 — Aug 261
Tue 8/19
Tue 8/26
1 adult, Economy
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Cheap flight deals from Klagenfurt to Philadelphia

Discover tips and strategies to find the most affordable flight options for your journey from Klagenfurt (KLU) to Philadelphia (PHL). 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 August 14, 2025.

Round-trip from

$748
(Gotogate)
From Klagenfurt to Philadelphia
Search Deals

Find flight deals from Klagenfurt to Philadelphia

Cheapest flights from Klagenfurt to Philadelphia
Explore the most affordable flight options available from Klagenfurt to Philadelphia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 14, 2025.

This Gotogate deal was found by Cheapflights users on 8/13. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/275:45 amKLU - PHL
2 stops21h 53mMultiple Airlines
Sat 10/49:20 amPHL - KLU
2 stops32h 05mMultiple Airlines
Deal found 8/13$748
This Mytrip deal was found by Cheapflights users on 8/13. 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.
Sat 9/275:45 amKLU - PHL
3 stops21h 53mAir Canada
Sat 10/43:25 pmPHL - KLU
3 stops16h 35mAir Canada
Deal found 8/13$863

Cheapflights Fare Finder

 
Customize your flight search to find flights from Klagenfurt to Philadelphia 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 August 14, 2025.
Use the filters below to find and compare flights from Klagenfurt to Philadelphia that are best for you.

Fly from

Klagenfurt

Fly to

Philadelphia

Route

Depart

Return

Price

KlagenfurtPhiladelphia

KLU - PHL

KLUPHL

Klagenfurt

Sat 9/27

5:45 am-9:38 pm

2 stops21h 53m

Philadelphia

Sat 10/4

9:20 am-11:25 pm

2 stops32h 05m

$748

KlagenfurtPhiladelphia

KLU - PHL

KLUPHL

Klagenfurt

Sat 9/27

5:45 am-9:38 pm

3 stops21h 53m

Philadelphia

Sat 10/4

3:25 pm-2:00 pm

3 stops16h 35m

$863

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/13

Best time to book a flight from Klagenfurt to Philadelphia

Have a flexible travel schedule? Discover the best time to fly to Philadelphia 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 Philadelphia

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

Currently, August is the cheapest month in which you can book a flight from Klagenfurt to Philadelphia (average of $236). Flying from Klagenfurt to Philadelphia in March is currently the most expensive (average of $295). 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 Philadelphia. 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 Philadelphia that include hotel bookings?

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

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

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

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

    Yes. Cheapflights offers flight deals from Klagenfurt to Philadelphia 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 Philadelphia?

    Currently, August is the cheapest month in which you can book a flight from Klagenfurt to Philadelphia (average of $236). Flying from Klagenfurt to Philadelphia in March is currently the most expensive (average of $295). 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 Philadelphia?

Book flights to Philadelphia if you plan to visit one of these locations
Vineland
Wildwood
King of Prussia
Pottstown
Cherry Hill
Ocean City
Reading
Millville
Ephrata
Camden
Dewey Beach
Dover
Elkton
Essington
Willow Grove
Newark
Chester
Exton
Glen Mills
Springfield

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