Flights to Casco Bay Islands from San Antonio - $149

View $149 flight on Tue, Sep 23, 2025Opens in a new window

Popular airlines from San Antonio to Casco Bay Islands

  • Delta

    Delta

  • American Airlines

    American Airlines

  • United

    United

  • Southwest Airlines

    Southwest Airlines

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Cheap Flights from San Antonio to Casco Bay Islands (SAT-PWM)

Prices were available within the past 7 days and start at $149 for one-way flights and $297 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Tue, Sep 23 - Sat, Oct 4
SAT
San Antonio
PWM
Portland
$297 Roundtrip, found 3 hours ago
$297
Roundtrip
found 3 hours ago
Select American Airlines flight, departing Tue, Sep 23 from San Antonio to Portland, returning Sat, Oct 4, priced at $297 found 3 hours ago
Delta
Tue, Sep 9 - Tue, Sep 16
SAT
San Antonio
PWM
Portland
$297 Roundtrip, found 3 hours ago
$297
Roundtrip
found 3 hours ago
Select Delta flight, departing Tue, Sep 9 from San Antonio to Portland, returning Tue, Sep 16, priced at $297 found 3 hours ago
United
Tue, Sep 23 - Sat, Oct 4
SAT
San Antonio
PWM
Portland
$297 Roundtrip, found 3 hours ago
$297
Roundtrip
found 3 hours ago
Select United flight, departing Tue, Sep 23 from San Antonio to Portland, returning Sat, Oct 4, priced at $297 found 3 hours ago
Delta
Wed, Oct 15 - Wed, Oct 22
SAT
San Antonio
PWM
Portland
$299 Roundtrip, found 4 hours ago
$299
Roundtrip
found 4 hours ago
Select Delta flight, departing Wed, Oct 15 from San Antonio to Portland, returning Wed, Oct 22, priced at $299 found 4 hours ago
United
Tue, Sep 23 - Sat, Oct 4
SAT
San Antonio
PWM
Portland
$300 Roundtrip, found 3 hours ago
$300
Roundtrip
found 3 hours ago
Select United flight, departing Tue, Sep 23 from San Antonio to Portland, returning Sat, Oct 4, priced at $300 found 3 hours ago
Southwest Airlines
Sat, Oct 25 - Wed, Oct 29
SAT
San Antonio
PWM
Portland
$310 Roundtrip, found 2 days ago
$310
Roundtrip
found 2 days ago
Select Southwest Airlines flight, departing Sat, Oct 25 from San Antonio to Portland, returning Wed, Oct 29, priced at $310 found 2 days ago

Find the cheapest month to fly from San Antonio (SAT) to Portland (PWM)

August is typically the cheapest month to fly

From $247 - $575 per traveler.

Graph displaying average flight prices per month

Alternative airports

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Portland Intl. Jetport PWM. Cheapest option available. Flights from $411
PWM
Portland Intl. Jetport
Cheapest
Flights from $411

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