Alaska Airlines Flight 3 Deals & Information (2025/2026)

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Alaska Airlines Flight 3 Route Deals From $139

The cheapest prices found with in the last 7 days for return flights were $273 and $139 for one-way flights to Seattle - Tacoma Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Wed, Oct 8 - Wed, Oct 29
DCA
Ronald Reagan Washington National
SEA
Seattle - Tacoma Intl.
$273 Roundtrip, just found
$273
Roundtrip
just found
Select Alaska Airlines flight, departing Wed, Oct 8 from Ronald Reagan Washington National to Seattle - Tacoma Intl., returning Wed, Oct 29, priced at $273 just found
Wed, Oct 8 - Wed, Oct 29
DCA
Ronald Reagan Washington National
SEA
Seattle - Tacoma Intl.
$277 Roundtrip, just found
$277
Roundtrip
just found
Select Alaska Airlines flight, departing Wed, Oct 8 from Ronald Reagan Washington National to Seattle - Tacoma Intl., returning Wed, Oct 29, priced at $277 just found
Tue, Aug 26 - Tue, Sep 2
DCA
Ronald Reagan Washington National
SEA
Seattle - Tacoma Intl.
$286 Roundtrip, found 3 hours ago
$286
Roundtrip
found 3 hours ago
Select Alaska Airlines flight, departing Tue, Aug 26 from Ronald Reagan Washington National to Seattle - Tacoma Intl., returning Tue, Sep 2, priced at $286 found 3 hours ago
Wed, Oct 8 - Wed, Oct 29
DCA
Ronald Reagan Washington National
SEA
Seattle - Tacoma Intl.
$287 Roundtrip, just found
$287
Roundtrip
just found
Select Alaska Airlines flight, departing Wed, Oct 8 from Ronald Reagan Washington National to Seattle - Tacoma Intl., returning Wed, Oct 29, priced at $287 just found
Mon, Aug 18 - Wed, Aug 27
DCA
Ronald Reagan Washington National
SEA
Seattle - Tacoma Intl.
$287 Roundtrip, found 6 hours ago
$287
Roundtrip
found 6 hours ago
Select Alaska Airlines flight, departing Mon, Aug 18 from Ronald Reagan Washington National to Seattle - Tacoma Intl., returning Wed, Aug 27, priced at $287 found 6 hours ago

Frequently asked questions

What route does flight number AS3 take?
You’ll be landing at SEA from National Airport if you’ve booked a ticket on flight number AS3. You’ll be in the sky for 5 hours and 58 minutes during this trip. It’s also worthwhile noting that the flight conveniently travels direct.
How often is AS3 on time?
If you’re traveling on Alaska Airlines flight number AS3 between Ronald Reagan Washington National Airport (DCA) and Seattle - Tacoma Intl. Airport (SEA), it’s assuring to know that 90% of these journeys reach their destination on time. If your plane happens to be delayed, the average wait time is around 16 minutes. This service has a 4.3-star rating.
What terminal does AS3 fly out of?
Flights between National Airport and Sea-Tac Airport are served by flight number AS3, and passengers traveling on this flight normally board from Terminal B.
What kind of plane is on flight number AS3?
The Airbus A321 is the aircraft type most often used for flight AS3. Usually, this flight takes off from DCA and touches down at Sea-Tac Airport.
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 AS3 flight with Travelocity, please visit our Customer Service Portal.