Cheap flights from San Francisco to Great Diamond Island

View AU$221 flight on Sat, 9 Aug. 2025Opens in a new window

Popular airlines from San Francisco to Great Diamond Island

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Cheap Flights from San Francisco (SJC) 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
Sat, 9 Aug. - Thu, 14 Aug.
SFO
San Francisco
PWM
Portland
AU$503 Return, found 5 days ago
AU$503
Return
found 5 days ago
Select American Airlines flight, departing Sat, 9 Aug. from San Francisco to Portland, returning Thu, 14 Aug., priced at AU$503 found 5 days ago
Delta
Sat, 9 Aug. - Thu, 14 Aug.
SFO
San Francisco
PWM
Portland
AU$510 Return, found 5 days ago
AU$510
Return
found 5 days ago
Select Delta flight, departing Sat, 9 Aug. from San Francisco to Portland, returning Thu, 14 Aug., priced at AU$510 found 5 days ago
American Airlines
Sat, 9 Aug. - Thu, 14 Aug.
SJC
San Jose
PWM
Portland
AU$514 Return, found 5 days ago
AU$514
Return
found 5 days ago
Select American Airlines flight, departing Sat, 9 Aug. from San Jose to Portland, returning Thu, 14 Aug., priced at AU$514 found 5 days ago
Delta
Thu, 18 Sep. - Thu, 25 Sep.
SFO
San Francisco
PWM
Portland
AU$523 Return, found 6 days ago
AU$523
Return
found 6 days ago
Select Delta flight, departing Thu, 18 Sep. from San Francisco to Portland, returning Thu, 25 Sep., priced at AU$523 found 6 days ago
United
Sat, 9 Aug. - Thu, 14 Aug.
SFO
San Francisco
PWM
Portland
AU$662 Return, found 5 days ago
AU$662
Return
found 5 days ago
Select United flight, departing Sat, 9 Aug. from San Francisco to Portland, returning Thu, 14 Aug., priced at AU$662 found 5 days ago
Alaska Airlines
Thu, 18 Sep. - Thu, 25 Sep.
SFO
San Francisco
PWM
Portland
AU$792 Return, found 6 days ago
AU$792
Return
found 6 days ago
Select Alaska Airlines flight, departing Thu, 18 Sep. from San Francisco to Portland, returning Thu, 25 Sep., priced at AU$792 found 6 days ago

Find the cheapest month to fly from San Francisco (SFO) to Portland (PWM)

September is typically the cheapest month to fly

From AU$310 - AU$1,033 per traveller.

Graph displaying average flight prices per month

*Available to Expedia members.