Alaska Airlines Flight AS15 Deals & Information (2025/2026)

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Alaska Airlines Flight 15 Route Deals From $129

The cheapest prices found with in the last 7 days for return flights were $257 and $129 for one-way flights to San Diego Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Sep 16 - Sat, Sep 20
DCA
Ronald Reagan Washington National
SAN
San Diego Intl.
$257 Roundtrip, just found
$257
Roundtrip
just found
Select Alaska Airlines flight, departing Tue, Sep 16 from Ronald Reagan Washington National to San Diego Intl., returning Sat, Sep 20, priced at $257 just found
Tue, Aug 12 - Tue, Aug 19
DCA
Ronald Reagan Washington National
SAN
San Diego Intl.
$262 Roundtrip, found 1 hour ago
$262
Roundtrip
found 1 hour ago
Select Alaska Airlines flight, departing Tue, Aug 12 from Ronald Reagan Washington National to San Diego Intl., returning Tue, Aug 19, priced at $262 found 1 hour ago
Tue, Sep 16 - Sat, Sep 20
DCA
Ronald Reagan Washington National
SAN
San Diego Intl.
$267 Roundtrip, just found
$267
Roundtrip
just found
Select Alaska Airlines flight, departing Tue, Sep 16 from Ronald Reagan Washington National to San Diego Intl., returning Sat, Sep 20, priced at $267 just found
Tue, Sep 16 - Sat, Sep 20
DCA
Ronald Reagan Washington National
SAN
San Diego Intl.
$272 Roundtrip, just found
$272
Roundtrip
just found
Select Alaska Airlines flight, departing Tue, Sep 16 from Ronald Reagan Washington National to San Diego Intl., returning Sat, Sep 20, priced at $272 just found
Sun, Sep 28 - Tue, Oct 7
DCA
Ronald Reagan Washington National
SAN
San Diego Intl.
$277 Roundtrip, just found
$277
Roundtrip
just found
Select Alaska Airlines flight, departing Sun, Sep 28 from Ronald Reagan Washington National to San Diego Intl., returning Tue, Oct 7, priced at $277 just found
Fri, Aug 22 - Tue, Aug 26
DCA
Ronald Reagan Washington National
SAN
San Diego Intl.
$287 Roundtrip, found 1 day ago
$287
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Fri, Aug 22 from Ronald Reagan Washington National to San Diego Intl., returning Tue, Aug 26, priced at $287 found 1 day ago
Tue, Sep 16 - Sat, Sep 20
DCA
Ronald Reagan Washington National
SAN
San Diego Intl.
$287 Roundtrip, just found
$287
Roundtrip
just found
Select Alaska Airlines flight, departing Tue, Sep 16 from Ronald Reagan Washington National to San Diego Intl., returning Sat, Sep 20, priced at $287 just found
Sun, Sep 28 - Tue, Oct 7
DCA
Ronald Reagan Washington National
SAN
San Diego Intl.
$292 Roundtrip, just found
$292
Roundtrip
just found
Select Alaska Airlines flight, departing Sun, Sep 28 from Ronald Reagan Washington National to San Diego Intl., returning Tue, Oct 7, priced at $292 just found
Wed, Aug 6 - Tue, Aug 12
DCA
Ronald Reagan Washington National
SAN
San Diego Intl.
$294 Roundtrip, found 1 hour ago
$294
Roundtrip
found 1 hour ago
Select Alaska Airlines flight, departing Wed, Aug 6 from Ronald Reagan Washington National to San Diego Intl., returning Tue, Aug 12, priced at $294 found 1 hour ago
Tue, Sep 16 - Sat, Sep 20
DCA
Ronald Reagan Washington National
SAN
San Diego Intl.
$301 Roundtrip, just found
$301
Roundtrip
just found
Select Alaska Airlines flight, departing Tue, Sep 16 from Ronald Reagan Washington National to San Diego Intl., returning Sat, Sep 20, priced at $301 just found

Frequently asked questions

What route does flight number AS15 take?
AS15 operates between BOS and Seattle - Tacoma Intl. Airport (SEA) and flies direct. This journey usually takes 6 hours and 10 minutes.
What terminal does AS15 fly out of?
Direct flights to and from Boston, MA Airport (BOS-Logan Intl.) and Sea-Tac Airport are served by flight number AS15, and passengers booked on this flight usually board from Terminal B.
What kind of plane is on flight number AS15?
Get ready to step aboard an Airbus A321 if you’ve reserved a seat on flight AS15. Almost all flights from Logan Intl. Airport (BOS) to Seattle - Tacoma Intl. Airport (SEA) operate using this aircraft model.
If I am not able to travel due to COVID-19, can I change my flight to a later date?
For more info about changing your AS15 flight with Travelocity, please visit our Customer Service Portal.