The cheapest times to fly from MDT to ADL are

  • January 29th to March 18th
  • April 2nd to May 6th
  • July 30th to December 2nd (except the weeks of September 3rd, October 8th, October 15th, and November 19th)

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 MDT to ADL is early November. Prices can be as high as $3663 for Thursday flights during late December, or as low as $1485 for Wednesday flights around early November.


When to Fly to Adelaide

Flying from Harrisburg, PA (MDT) to Adelaide (ADL) will usually cost between $1563 to $2651 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 $1573. Due to high demand the most expensive time to fly is late December, with an average price of $3268. Planning your trip to low-cost times can easily save you $1696 on economy flights and even more on first-class flights. Generally, any price below $1718 can be considered a good price for a round-trip MDT to ADL flight.

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

MDT to ADL Flight Prices

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


Flight Prices by Day of the Week

Wednesday is usually the cheapest day to fly to ADL, and Tuesday the cheapest day to fly back into MDT. Thursdays are the most expensive days to fly to Adelaide, and Fridays are the most expensive days to return to Harrisburg. Selecting flights on the least expensive days could save you up to $210 (11%) on this flight.

Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Wednesday and returning a week later will cost an average of $1758. Return trip prices are from the ADL to MDT 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 MDT to ADL can generally find a 2-layover flight. Because there is not usually a direct flight option the real-world direct flight time of 19 hour 51 minutes may not be realistic.


Flight Hacking MDT 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 MDT to ADL — but Champion Traveler does!

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

  • Price for both tickets: $1512
  • Average savings: $206 (11.97%)

See MDT to LAX flights

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

  • Price for both tickets: $1632
  • Average savings: $86 (4.98%)

See MDT to SIN flights


Flight Questions Answered

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

Which airlines fly this route?

You can find 11 major airlines flying this route most often: Air France, Air New Zealand, American, Bangkok Airways, Delta, Iberia, Lufthansa, Qantas, Singapore Airlines, United, Virgin Australia, and potentially more during busy seasons.

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

The distance between the two airports is roughly 10482 miles or 16869 kilometers.

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

The real-world flight time for a nonstop MDT to ADL flight is about 19 hour 51 minutes.

How many flights go between Harrisburg, 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 MDT to ADL.


Airport Location Info


Departing Airport

Origination code MDT
Origination airport name Harrisburg International Airport
City Harrisburg, PA
Country the United States
Latitude 40.2
Longitude -76.8

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.