The cheapest times to fly from PHL to ADL are

  • January 29th to April 1st
  • August 6th to September 30th
  • October 15th to December 9th

based on data collected exclusively by Champion Traveler across tens of millions of flights. Among all the dates above, the very cheapest time to fly from PHL to ADL is early November. Prices can be as high as $4311 for Thursday flights during late December, or as low as $1153 for Tuesday flights around early November.


When to Fly to Adelaide

Flying from Philadelphia, PA (PHL) to Adelaide (ADL) will usually cost between $1327 to $2805 per person if booking more than four weeks in advance. On average the very cheapest time to fly is early November with an average ticket price of $1335. Due to high demand the most expensive time to fly is late December, with an average price of $3222. Planning your trip to low-cost times can easily save you $1888 on economy flights and even more on first-class flights. Generally, any price below $1733 can be considered a good price for a round-trip PHL to ADL flight.

See below for a graph of average weekly prices for the PHL to ADL route. All prices are for round-trip tickets in USD.

PHL to ADL Flight Prices

Compared to other flights, the PHL to ADL flight is more expensive than the average and costs more than the average flight leaving from Philadelphia. The average price per mile (for a direct flight) is $0.1, which is far below average.


Flight Prices by Day of the Week

Tuesday is usually the cheapest day to depart and return on this flight. Thursdays are the most expensive days to fly out or take a return trip. Selecting flights on the least expensive days could save you up to $226 (11%) on this flight.

Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Tuesday and returning a week later will cost an average of $1706. Return trip prices are from the ADL to PHL flight, and often highlight the quality of our data in showing the same trend.

Departing Prices by Day

Departure Day Prices

Return Trip Prices by Day

Return Day Prices


Nonstop Flights and Layovers

Travelers looking to fly from PHL to ADL can generally find a 1-layover flight. Because there is not usually a direct flight option the real-world direct flight time of 19 hour 60 minutes may not be realistic.


Flight Hacking PHL to ADL

Flight hacking is when you book two tickets instead of a layover, sometimes with different airlines. You will need to either bring only a carry-on bag (highly recommended) or leave yourself plenty of time to go through security again. Flight hacking is completely allowed, but airlines don’t always tell you the cheapest way to get from PHL to ADL — but Champion Traveler does!

Hack #1: Los Angeles, CA (PHL > LAX > ADL)

  • Price for both tickets: $1436
  • Average savings: $297 (17.11%)

See PHL to LAX flights

Hack #2: Singapore (PHL > SIN > ADL)

  • Price for both tickets: $1452
  • Average savings: $281 (16.19%)

See PHL to SIN flights

Hack #3: Kuala Lumpur (PHL > KUL > ADL)

  • Price for both tickets: $1473
  • Average savings: $260 (14.98%)

See PHL to KUL flights


Flight Questions Answered

Still have questions about flying from PHL to ADL? We’ve got answers.

Which airlines fly this route?

You can find 12 major airlines flying this route most often: Air Canada, Air New Zealand, American, British Airways, Cathay Pacific, China Southern, Delta, Emirates, Fiji Airways, Qantas, Qatar Airways, United, and potentially more during busy seasons.

How far away is it from Adelaide International Airport to Philadelphia International Airport?

The distance between the two airports is roughly 10562 miles or 16998 kilometers.

How long does it take to fly from PHL to ADL?

The real-world flight time for a nonstop PHL to ADL flight is about 19 hour 60 minutes.

How many flights go between Philadelphia, PA and Adelaide?

It depends on the day of the week and the date, but a typical day might have around 16 available flights from PHL to ADL.


Airport Location Info


Departing Airport

Origination code PHL
Origination airport name Philadelphia International Airport
City Philadelphia, PA
Country the United States
Latitude 39.9
Longitude -75.2

Return Airport

Destination code ADL
Destination airport name Adelaide International Airport
City Adelaide
Country Australia
Latitude -34.9
Longitude 138.5


Other Resources

Please note that while we’ve worked hard to analyzed tens of millions of flights to get you this data, we do not calculate current live prices or guarantee pricing. Please see our partners using the links above for current offers.