Flights to Casco Bay Islands from San Antonio - $149

View $149 flight on Wed, Nov 12, 2025Opens in a new window

Popular airlines from San Antonio to Casco Bay Islands

  • American Airlines

    American Airlines

  • Delta

    Delta

  • 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
Sat, Sep 20 - Tue, Sep 30
SAT
San Antonio
PWM
Portland
$297 Roundtrip, found 8 hours ago
$297
Roundtrip
found 8 hours ago
Select American Airlines flight, departing Sat, Sep 20 from San Antonio to Portland, returning Tue, Sep 30, priced at $297 found 8 hours ago
Delta
Sat, Sep 20 - Tue, Sep 30
SAT
San Antonio
PWM
Portland
$297 Roundtrip, found 8 hours ago
$297
Roundtrip
found 8 hours ago
Select Delta flight, departing Sat, Sep 20 from San Antonio to Portland, returning Tue, Sep 30, priced at $297 found 8 hours ago
United
Sat, Sep 20 - Tue, Sep 30
SAT
San Antonio
PWM
Portland
$297 Roundtrip, found 8 hours ago
$297
Roundtrip
found 8 hours ago
Select United flight, departing Sat, Sep 20 from San Antonio to Portland, returning Tue, Sep 30, priced at $297 found 8 hours ago
Delta
Sat, Oct 11 - Wed, Oct 15
SAT
San Antonio
PWM
Portland
$299 Roundtrip, found 9 hours ago
$299
Roundtrip
found 9 hours ago
Select Delta flight, departing Sat, Oct 11 from San Antonio to Portland, returning Wed, Oct 15, priced at $299 found 9 hours ago
American Airlines
Sat, Sep 20 - Tue, Sep 30
SAT
San Antonio
PWM
Portland
$300 Roundtrip, found 8 hours ago
$300
Roundtrip
found 8 hours ago
Select American Airlines flight, departing Sat, Sep 20 from San Antonio to Portland, returning Tue, Sep 30, priced at $300 found 8 hours ago
Southwest Airlines
Sat, Aug 23 - Sat, Aug 30
SAT
San Antonio
PWM
Portland
$302 Roundtrip, found 15 hours ago
$302
Roundtrip
found 15 hours ago
Select Southwest Airlines flight, departing Sat, Aug 23 from San Antonio to Portland, returning Sat, Aug 30, priced at $302 found 15 hours 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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