Cheap flights from Philadelphia to Great Diamond Island

View AU$274 flight on Sat, 30 Aug. 2025Opens in a new window

Popular airlines from Philadelphia to Great Diamond Island

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Cheap Flights from Philadelphia (ILG) to Great Diamond Island (PWM)

Prices were available within the past 7 days for one-way flights and round trip tickets for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Fri, 22 Aug. - Fri, 29 Aug.
PHL
Philadelphia
PWM
Portland
AU$669 Return, found 4 days ago
AU$669
Return
found 4 days ago
Select American Airlines flight, departing Fri, 22 Aug. from Philadelphia to Portland, returning Fri, 29 Aug., priced at AU$669 found 4 days ago
American Airlines
Fri, 22 Aug. - Fri, 29 Aug.
PHL
Philadelphia
PWM
Portland
AU$685 Return, found 4 days ago
AU$685
Return
found 4 days ago
Select American Airlines flight, departing Fri, 22 Aug. from Philadelphia to Portland, returning Fri, 29 Aug., priced at AU$685 found 4 days ago
United
Fri, 22 Aug. - Fri, 29 Aug.
PHL
Philadelphia
PWM
Portland
AU$700 Return, found 4 days ago
AU$700
Return
found 4 days ago
Select United flight, departing Fri, 22 Aug. from Philadelphia to Portland, returning Fri, 29 Aug., priced at AU$700 found 4 days ago
American Airlines
Fri, 22 Aug. - Fri, 29 Aug.
PHL
Philadelphia
PWM
Portland
AU$757 Return, found 4 days ago
AU$757
Return
found 4 days ago
Select American Airlines flight, departing Fri, 22 Aug. from Philadelphia to Portland, returning Fri, 29 Aug., priced at AU$757 found 4 days ago
American Airlines
Fri, 22 Aug. - Fri, 29 Aug.
PHL
Philadelphia
PWM
Portland
AU$772 Return, found 4 days ago
AU$772
Return
found 4 days ago
Select American Airlines flight, departing Fri, 22 Aug. from Philadelphia to Portland, returning Fri, 29 Aug., priced at AU$772 found 4 days ago
Delta
Fri, 22 Aug. - Fri, 29 Aug.
PHL
Philadelphia
PWM
Portland
AU$866 Return, found 4 days ago
AU$866
Return
found 4 days ago
Select Delta flight, departing Fri, 22 Aug. from Philadelphia to Portland, returning Fri, 29 Aug., priced at AU$866 found 4 days ago

Find the cheapest month to fly from Philadelphia (PHL) to Portland (PWM)

October is typically the cheapest month to fly

From AU$138 - AU$629 per traveller.

Graph displaying average flight prices per month

*Available to Expedia members.