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$1,221+ 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 10/5. Fares are subject to change and may not be available on all flights or dates of travel.
KLU — PHL
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
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 June 12, 2025.

Round-trip from

$1,221
(Austrian Airlines)
From Klagenfurt to Philadelphia
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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 June 12, 2025.

This Austrian Airlines deal was found by Cheapflights users on 6/12. 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.
Sun 10/53:00 pmKLU - PHL
2 stops37h 29mAustrian Airlines
Fri 10/105:35 pmPHL - KLU
2 stops14h 25mAustrian Airlines
Deal found 6/12$1,221

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 June 12, 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

Sun 10/5

3:00 pm-10:29 pm

2 stops37h 29m

Philadelphia

Fri 10/10

5:35 pm-2:00 pm

2 stops14h 25m

$1,221

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/12

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

Rainfall in Philadelphia by month

Plan your trip to Philadelphia by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Philadelphia ranges from 2.7 - 4.4 inches per month. July is typically the wettest month, when rainfall can reach 4.4 in. February is typically the driest time to visit Philadelphia when rainfall is around 2.7 in.

Temperature in Philadelphia by month

Plan your trip to Philadelphia by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Philadelphia, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 33.8 F).

Reviews of airlines servicing Philadelphia

Get insights into the airlines that provide service to Philadelphia. 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 Philadelphia. Reviews last updated June 12, 2025.
Austrian Airlines
7.6
Good
802 reviews

Entertainment

6.8

Overall

7.6

Boarding

7.6

Food

6.8

Crew

8.1

Comfort

7.3

Reviews

1 / 20
8.0
Excellent

Grant,Jun 2025

VIE - FRA

A delay was caused by computer malfunctions after we left the gate. It was handled well
Austrian Airlines
7.6
Good
802 reviews
Austrian Airlines
7.6
Good
802 reviews

Entertainment

6.8

Overall

7.6

Boarding

7.6

Food

6.8

Crew

8.1

Comfort

7.3

Reviews

1 / 20
8.0
Excellent

Grant,Jun 2025

VIE - FRA

A delay was caused by computer malfunctions after we left the gate. It was handled well

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 Klagenfurt?

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

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