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.

Sat, Aug 23 - Sat, Aug 30
DCA
Ronald Reagan Washington National
SAN
San Diego Intl.
$257 Roundtrip, found 3 hours ago
$257
Roundtrip
found 3 hours ago
Select Alaska Airlines flight, departing Sat, Aug 23 from Ronald Reagan Washington National to San Diego Intl., returning Sat, Aug 30, priced at $257 found 3 hours ago
Wed, Aug 13 - Tue, Aug 19
DCA
Ronald Reagan Washington National
SAN
San Diego Intl.
$262 Roundtrip, found 5 hours ago
$262
Roundtrip
found 5 hours ago
Select Alaska Airlines flight, departing Wed, Aug 13 from Ronald Reagan Washington National to San Diego Intl., returning Tue, Aug 19, priced at $262 found 5 hours ago
Sat, Sep 20 - Sat, Sep 27
DCA
Ronald Reagan Washington National
SAN
San Diego Intl.
$267 Roundtrip, found 7 hours ago
$267
Roundtrip
found 7 hours ago
Select Alaska Airlines flight, departing Sat, Sep 20 from Ronald Reagan Washington National to San Diego Intl., returning Sat, Sep 27, priced at $267 found 7 hours ago
Sat, Sep 6 - Sun, Sep 7
DCA
Ronald Reagan Washington National
SAN
San Diego Intl.
$272 Roundtrip, found 4 hours ago
$272
Roundtrip
found 4 hours ago
Select Alaska Airlines flight, departing Sat, Sep 6 from Ronald Reagan Washington National to San Diego Intl., returning Sun, Sep 7, priced at $272 found 4 hours ago
Sat, Sep 6 - Sun, Sep 7
DCA
Ronald Reagan Washington National
SAN
San Diego Intl.
$277 Roundtrip, found 4 hours ago
$277
Roundtrip
found 4 hours ago
Select Alaska Airlines flight, departing Sat, Sep 6 from Ronald Reagan Washington National to San Diego Intl., returning Sun, Sep 7, priced at $277 found 4 hours ago
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
Thu, Sep 4 - Sun, Sep 7
DCA
Ronald Reagan Washington National
SAN
San Diego Intl.
$292 Roundtrip, found 3 hours ago
$292
Roundtrip
found 3 hours ago
Select Alaska Airlines flight, departing Thu, Sep 4 from Ronald Reagan Washington National to San Diego Intl., returning Sun, Sep 7, priced at $292 found 3 hours ago
Thu, Sep 4 - Sun, Sep 7
DCA
Ronald Reagan Washington National
SAN
San Diego Intl.
$297 Roundtrip, found 3 hours ago
$297
Roundtrip
found 3 hours ago
Select Alaska Airlines flight, departing Thu, Sep 4 from Ronald Reagan Washington National to San Diego Intl., returning Sun, Sep 7, priced at $297 found 3 hours ago
Wed, Sep 24 - Wed, Oct 15
DCA
Ronald Reagan Washington National
SAN
San Diego Intl.
$301 Roundtrip, found 13 hours ago
$301
Roundtrip
found 13 hours ago
Select Alaska Airlines flight, departing Wed, Sep 24 from Ronald Reagan Washington National to San Diego Intl., returning Wed, Oct 15, priced at $301 found 13 hours ago
Thu, Aug 14 - Mon, Aug 18
DCA
Ronald Reagan Washington National
SAN
San Diego Intl.
$303 Roundtrip, found 5 hours ago
$303
Roundtrip
found 5 hours ago
Select Alaska Airlines flight, departing Thu, Aug 14 from Ronald Reagan Washington National to San Diego Intl., returning Mon, Aug 18, priced at $303 found 5 hours ago

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.