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

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Alaska Airlines Flight 1 Route Deals From $129

The cheapest prices found with in the last 7 days for return flights were $234 and $129 for one-way flights to Seattle - Tacoma Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Sat, Apr 25 - Sun, May 3
DCA
Ronald Reagan Washington National
SEA
Seattle - Tacoma Intl.
$234 Roundtrip, found 22 hours ago
$234
Roundtrip
found 22 hours ago
Select Alaska Airlines flight, departing Sat, Apr 25 from Ronald Reagan Washington National to Seattle - Tacoma Intl., returning Sun, May 3, priced at $234 found 22 hours ago
Wed, May 6 - Thu, May 14
DCA
Ronald Reagan Washington National
SEA
Seattle - Tacoma Intl.
$236 Roundtrip, found 1 day ago
$236
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Wed, May 6 from Ronald Reagan Washington National to Seattle - Tacoma Intl., returning Thu, May 14, priced at $236 found 1 day ago
Tue, Apr 7 - Fri, Apr 17
DCA
Ronald Reagan Washington National
SEA
Seattle - Tacoma Intl.
$248 Roundtrip, found 11 hours ago
$248
Roundtrip
found 11 hours ago
Select Alaska Airlines flight, departing Tue, Apr 7 from Ronald Reagan Washington National to Seattle - Tacoma Intl., returning Fri, Apr 17, priced at $248 found 11 hours ago
Wed, Apr 8 - Wed, Apr 15
DCA
Ronald Reagan Washington National
SEA
Seattle - Tacoma Intl.
$253 Roundtrip, found 20 hours ago
$253
Roundtrip
found 20 hours ago
Select Alaska Airlines flight, departing Wed, Apr 8 from Ronald Reagan Washington National to Seattle - Tacoma Intl., returning Wed, Apr 15, priced at $253 found 20 hours ago
Sat, Apr 25 - Sat, May 2
DCA
Ronald Reagan Washington National
SEA
Seattle - Tacoma Intl.
$257 Roundtrip, found 1 hour ago
$257
Roundtrip
found 1 hour ago
Select Alaska Airlines flight, departing Sat, Apr 25 from Ronald Reagan Washington National to Seattle - Tacoma Intl., returning Sat, May 2, priced at $257 found 1 hour ago
Tue, Apr 28 - Mon, May 4
DCA
Ronald Reagan Washington National
SEA
Seattle - Tacoma Intl.
$259 Roundtrip, found 5 days ago
$259
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Tue, Apr 28 from Ronald Reagan Washington National to Seattle - Tacoma Intl., returning Mon, May 4, priced at $259 found 5 days ago
Tue, Apr 7 - Fri, Apr 17
DCA
Ronald Reagan Washington National
SEA
Seattle - Tacoma Intl.
$259 Roundtrip, found 11 hours ago
$259
Roundtrip
found 11 hours ago
Select Alaska Airlines flight, departing Tue, Apr 7 from Ronald Reagan Washington National to Seattle - Tacoma Intl., returning Fri, Apr 17, priced at $259 found 11 hours ago
Sat, Apr 4 - Fri, Apr 17
DCA
Ronald Reagan Washington National
SEA
Seattle - Tacoma Intl.
$261 Roundtrip, found 11 hours ago
$261
Roundtrip
found 11 hours ago
Select Alaska Airlines flight, departing Sat, Apr 4 from Ronald Reagan Washington National to Seattle - Tacoma Intl., returning Fri, Apr 17, priced at $261 found 11 hours ago
Mon, Mar 2 - Tue, Mar 10
DCA
Ronald Reagan Washington National
SEA
Seattle - Tacoma Intl.
$265 Roundtrip, found 1 day ago
$265
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Mon, Mar 2 from Ronald Reagan Washington National to Seattle - Tacoma Intl., returning Tue, Mar 10, priced at $265 found 1 day 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.