Flights to Casco Bay Islands from Boston - ￥23,190

View ￥23,190 flight on Mon, Sep 1, 2025Opens in a new window

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Cheap Flights from Boston to Casco Bay Islands (BOS-PWM)

Prices were available within the past 7 days and start at ￥23,190 for one-way flights and ￥55,970 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Tue, Aug 12 - Sun, Aug 17
BOS
Boston
PWM
Portland
￥55,970 Roundtrip, found 3 days ago
￥55,970
Roundtrip
found 3 days ago
Select American Airlines flight, departing Tue, Aug 12 from Boston to Portland, returning Sun, Aug 17, priced at ￥55,970 found 3 days ago
American Airlines
Tue, Aug 12 - Sun, Aug 17
BOS
Boston
PWM
Portland
￥57,260 Roundtrip, found 3 days ago
￥57,260
Roundtrip
found 3 days ago
Select American Airlines flight, departing Tue, Aug 12 from Boston to Portland, returning Sun, Aug 17, priced at ￥57,260 found 3 days ago
United
Tue, Aug 12 - Sun, Aug 17
BOS
Boston
PWM
Portland
￥77,790 Roundtrip, found 3 days ago
￥77,790
Roundtrip
found 3 days ago
Select United flight, departing Tue, Aug 12 from Boston to Portland, returning Sun, Aug 17, priced at ￥77,790 found 3 days ago
Delta
Tue, Aug 12 - Sun, Aug 17
BOS
Boston
PWM
Portland
￥80,570 Roundtrip, found 3 days ago
￥80,570
Roundtrip
found 3 days ago
Select Delta flight, departing Tue, Aug 12 from Boston to Portland, returning Sun, Aug 17, priced at ￥80,570 found 3 days ago
United
Tue, Aug 12 - Sun, Aug 17
BOS
Boston
PWM
Portland
￥84,140 Roundtrip, found 3 days ago
￥84,140
Roundtrip
found 3 days ago
Select United flight, departing Tue, Aug 12 from Boston to Portland, returning Sun, Aug 17, priced at ￥84,140 found 3 days ago
Delta
Tue, Aug 12 - Sun, Aug 17
BOS
Boston
PWM
Portland
￥85,300 Roundtrip, found 3 days ago
￥85,300
Roundtrip
found 3 days ago
Select Delta flight, departing Tue, Aug 12 from Boston to Portland, returning Sun, Aug 17, priced at ￥85,300 found 3 days ago

Find the cheapest month to fly from Boston (BOS) to Portland (PWM)

September is typically the cheapest month to fly

From ￥22,167 - ￥55,150 per traveler.

Graph displaying average flight prices per month

*Available to Expedia members.