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

Wander Wisely with exceptional service, 24/7 supportOpens in a new window

Feel at ease with free flight cancellations within 24 hours of booking

Change your flight without a fee on select flights

Alaska Airlines Flight 1 Route Deals From $148

The cheapest prices found with in the last 7 days for return flights were $269 and $148 for one-way flights to Seattle - Tacoma Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, May 5 - Fri, May 8
DCA
Ronald Reagan Washington National
SEA
Seattle - Tacoma Intl.
$269 Roundtrip, found 1 day ago
$269
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Tue, May 5 from Ronald Reagan Washington National to Seattle - Tacoma Intl., returning Fri, May 8, priced at $269 found 1 day ago
Sat, May 2 - Fri, May 8
DCA
Ronald Reagan Washington National
SEA
Seattle - Tacoma Intl.
$275 Roundtrip, found 4 hours ago
$275
Roundtrip
found 4 hours ago
Select Alaska Airlines flight, departing Sat, May 2 from Ronald Reagan Washington National to Seattle - Tacoma Intl., returning Fri, May 8, priced at $275 found 4 hours ago
Tue, May 5 - Fri, May 8
DCA
Ronald Reagan Washington National
SEA
Seattle - Tacoma Intl.
$279 Roundtrip, found 1 day ago
$279
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Tue, May 5 from Ronald Reagan Washington National to Seattle - Tacoma Intl., returning Fri, May 8, priced at $279 found 1 day ago
Tue, May 5 - Thu, May 7
DCA
Ronald Reagan Washington National
SEA
Seattle - Tacoma Intl.
$289 Roundtrip, found 12 hours ago
$289
Roundtrip
found 12 hours ago
Select Alaska Airlines flight, departing Tue, May 5 from Ronald Reagan Washington National to Seattle - Tacoma Intl., returning Thu, May 7, priced at $289 found 12 hours ago
Tue, May 5 - Thu, May 7
DCA
Ronald Reagan Washington National
SEA
Seattle - Tacoma Intl.
$295 Roundtrip, found 12 hours ago
$295
Roundtrip
found 12 hours ago
Select Alaska Airlines flight, departing Tue, May 5 from Ronald Reagan Washington National to Seattle - Tacoma Intl., returning Thu, May 7, priced at $295 found 12 hours ago
Mon, Aug 31 - Wed, Sep 9
DCA
Ronald Reagan Washington National
SEA
Seattle - Tacoma Intl.
$295 Roundtrip, found 3 days ago
$295
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Mon, Aug 31 from Ronald Reagan Washington National to Seattle - Tacoma Intl., returning Wed, Sep 9, priced at $295 found 3 days ago
Tue, Sep 8 - Tue, Sep 22
DCA
Ronald Reagan Washington National
SEA
Seattle - Tacoma Intl.
$300 Roundtrip, found 1 day ago
$300
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Tue, Sep 8 from Ronald Reagan Washington National to Seattle - Tacoma Intl., returning Tue, Sep 22, priced at $300 found 1 day ago
Wed, May 27 - Sat, May 30
DCA
Ronald Reagan Washington National
SEA
Seattle - Tacoma Intl.
$305 Roundtrip, just found
$305
Roundtrip
just found
Select Alaska Airlines flight, departing Wed, May 27 from Ronald Reagan Washington National to Seattle - Tacoma Intl., returning Sat, May 30, priced at $305 just found
Wed, May 27 - Sat, May 30
DCA
Ronald Reagan Washington National
SEA
Seattle - Tacoma Intl.
$311 Roundtrip, just found
$311
Roundtrip
just found
Select Alaska Airlines flight, departing Wed, May 27 from Ronald Reagan Washington National to Seattle - Tacoma Intl., returning Sat, May 30, priced at $311 just found
Thu, May 28 - Sun, May 31
DCA
Ronald Reagan Washington National
SEA
Seattle - Tacoma Intl.
$341 Roundtrip, just found
$341
Roundtrip
just found
Select Alaska Airlines flight, departing Thu, May 28 from Ronald Reagan Washington National to Seattle - Tacoma Intl., returning Sun, May 31, priced at $341 just found

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.