Alaska Airlines Flight 1 Deals & Information (2026/2027)

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Alaska Airlines Flight 1 Route Deals From $150

The cheapest prices found with in the last 7 days for return flights were $258 and $150 for one-way flights to Seattle - Tacoma Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Aug 18 - Wed, Sep 2
DCA
Ronald Reagan Washington National
SEA
Seattle - Tacoma Intl.
$258 Roundtrip, found 2 days ago
$258
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Tue, Aug 18 from Ronald Reagan Washington National to Seattle - Tacoma Intl., returning Wed, Sep 2, priced at $258 found 2 days ago
Tue, Aug 25 - Wed, Sep 2
DCA
Ronald Reagan Washington National
SEA
Seattle - Tacoma Intl.
$263 Roundtrip, found 2 days ago
$263
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Tue, Aug 25 from Ronald Reagan Washington National to Seattle - Tacoma Intl., returning Wed, Sep 2, priced at $263 found 2 days ago
Tue, Aug 18 - Wed, Sep 2
DCA
Ronald Reagan Washington National
SEA
Seattle - Tacoma Intl.
$273 Roundtrip, found 2 days ago
$273
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Tue, Aug 18 from Ronald Reagan Washington National to Seattle - Tacoma Intl., returning Wed, Sep 2, priced at $273 found 2 days ago
Tue, Aug 25 - Wed, Sep 2
DCA
Ronald Reagan Washington National
SEA
Seattle - Tacoma Intl.
$279 Roundtrip, found 2 days ago
$279
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Tue, Aug 25 from Ronald Reagan Washington National to Seattle - Tacoma Intl., returning Wed, Sep 2, priced at $279 found 2 days ago
Tue, Aug 25 - Fri, Sep 11
DCA
Ronald Reagan Washington National
SEA
Seattle - Tacoma Intl.
$285 Roundtrip, found 2 days ago
$285
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Tue, Aug 25 from Ronald Reagan Washington National to Seattle - Tacoma Intl., returning Fri, Sep 11, priced at $285 found 2 days ago
Wed, Aug 12 - Wed, Sep 2
DCA
Ronald Reagan Washington National
SEA
Seattle - Tacoma Intl.
$293 Roundtrip, found 2 days ago
$293
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Wed, Aug 12 from Ronald Reagan Washington National to Seattle - Tacoma Intl., returning Wed, Sep 2, priced at $293 found 2 days ago
Sat, Aug 29 - Tue, Sep 1
DCA
Ronald Reagan Washington National
SEA
Seattle - Tacoma Intl.
$298 Roundtrip, found 1 day ago
$298
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Sat, Aug 29 from Ronald Reagan Washington National to Seattle - Tacoma Intl., returning Tue, Sep 1, priced at $298 found 1 day ago
Tue, Sep 8 - Thu, Sep 17
DCA
Ronald Reagan Washington National
SEA
Seattle - Tacoma Intl.
$305 Roundtrip, found 6 days ago
$305
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Tue, Sep 8 from Ronald Reagan Washington National to Seattle - Tacoma Intl., returning Thu, Sep 17, priced at $305 found 6 days ago
Tue, Sep 1 - Thu, Sep 3
DCA
Ronald Reagan Washington National
SEA
Seattle - Tacoma Intl.
$320 Roundtrip, found 13 hours ago
$320
Roundtrip
found 13 hours ago
Select Alaska Airlines flight, departing Tue, Sep 1 from Ronald Reagan Washington National to Seattle - Tacoma Intl., returning Thu, Sep 3, priced at $320 found 13 hours ago

Frequently asked questions

What route does flight number AS1 take?
AS1 operates from DCA to SEA and is a direct flight. This service generally takes 5 hours and 46 minutes.
How often is AS1 on time?
Alaska Airlines flight number AS1 from DCA to Seattle, WA Airport (SEA-Seattle - Tacoma Intl.) departs according to schedule 86% of the time — so you can rest easy knowing you will arrive at your destination ASAP. If your trip is delayed, the average wait time is 13 minutes. This route has a 4.05-star rating.
What terminal does AS1 fly out of?
You'll likely be stepping aboard the plane at Terminal B if you're booked on flight AS1 direct from Ronald Reagan Washington National Airport (DCA) to Seattle, WA Airport (SEA-Seattle - Tacoma Intl.).
What kind of plane is on flight number AS1?
Get set to cruise aboard an Airbus A321 if you're booked on flight AS1. Nearly all services from National Airport to Seattle - Tacoma Intl. Airport (SEA) are operated using this type of plane.
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 AS1 flight with Travelocity, please visit our Customer Service Portal.