Cheap flights from Columbus to Great Diamond Island from CA $112

View CA $112 flight on Mon, Oct. 13, 2025Opens in a new window

Popular airlines from Columbus to Great Diamond Island

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Cheap flights from Columbus (CMH) to Great Diamond Island (PWM)

Prices were available within the past 7 days and start at CA $112 for one-way flights and CA $299 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Breeze Airways
Fri, Aug. 8 - Wed, Sep. 17
CMH
Columbus
PWM
Portland
CA $299 Roundtrip, found 4 days ago
CA $299
Roundtrip
found 4 days ago
Select Breeze Airways flight, departing Fri, Aug. 8 from Columbus to Portland, returning Wed, Sep. 17, priced at CA $299 found 4 days ago
Breeze Airways
Fri, Aug. 8 - Wed, Sep. 17
CMH
Columbus
PWM
Portland
CA $325 Roundtrip, found 4 days ago
CA $325
Roundtrip
found 4 days ago
Select Breeze Airways flight, departing Fri, Aug. 8 from Columbus to Portland, returning Wed, Sep. 17, priced at CA $325 found 4 days ago
Breeze Airways
Fri, Sep. 5 - Mon, Sep. 8
CMH
Columbus
PWM
Portland
CA $353 Roundtrip, found 3 hours ago
CA $353
Roundtrip
found 3 hours ago
Select Breeze Airways flight, departing Fri, Sep. 5 from Columbus to Portland, returning Mon, Sep. 8, priced at CA $353 found 3 hours ago
Breeze Airways
Fri, Aug. 8 - Wed, Sep. 17
CMH
Columbus
PWM
Portland
CA $369 Roundtrip, found 4 days ago
CA $369
Roundtrip
found 4 days ago
Select Breeze Airways flight, departing Fri, Aug. 8 from Columbus to Portland, returning Wed, Sep. 17, priced at CA $369 found 4 days ago
American Airlines
Fri, Sep. 5 - Mon, Sep. 8
CMH
Columbus
PWM
Portland
CA $420 Roundtrip, found 3 hours ago
CA $420
Roundtrip
found 3 hours ago
Select American Airlines flight, departing Fri, Sep. 5 from Columbus to Portland, returning Mon, Sep. 8, priced at CA $420 found 3 hours ago
Delta
Fri, Aug. 8 - Wed, Sep. 17
CMH
Columbus
PWM
Portland
CA $443 Roundtrip, found 4 days ago
CA $443
Roundtrip
found 4 days ago
Select Delta flight, departing Fri, Aug. 8 from Columbus to Portland, returning Wed, Sep. 17, priced at CA $443 found 4 days ago

Find the cheapest month to fly from Columbus (CMH) to Portland (PWM)

May is typically the cheapest month to fly

From CA $180 - CA $506 per traveller.

Graph displaying average flight prices per month

*Available to Expedia members.