Alaska Airlines Flight 1 Deals & Information (2025/2026)

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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.

Wed, Jun 4 - Sat, Jun 7
DCA
Ronald Reagan Washington National
SEA
Seattle - Tacoma Intl.
$234 Roundtrip, found 6 hours ago
$234
Roundtrip
found 6 hours ago
Select Alaska Airlines flight, departing Wed, Jun 4 from Ronald Reagan Washington National to Seattle - Tacoma Intl., returning Sat, Jun 7, priced at $234 found 6 hours ago
Wed, Jun 4 - Sat, Jun 7
DCA
Ronald Reagan Washington National
SEA
Seattle - Tacoma Intl.
$239 Roundtrip, found 6 hours ago
$239
Roundtrip
found 6 hours ago
Select Alaska Airlines flight, departing Wed, Jun 4 from Ronald Reagan Washington National to Seattle - Tacoma Intl., returning Sat, Jun 7, priced at $239 found 6 hours ago
Wed, May 28 - Mon, Jun 9
DCA
Ronald Reagan Washington National
SEA
Seattle - Tacoma Intl.
$242 Roundtrip, found 4 days ago
$242
Roundtrip
found 4 days ago
Select Alaska Airlines flight, departing Wed, May 28 from Ronald Reagan Washington National to Seattle - Tacoma Intl., returning Mon, Jun 9, priced at $242 found 4 days ago
Wed, Jun 4 - Fri, Jun 6
DCA
Ronald Reagan Washington National
SEA
Seattle - Tacoma Intl.
$249 Roundtrip, found 9 hours ago
$249
Roundtrip
found 9 hours ago
Select Alaska Airlines flight, departing Wed, Jun 4 from Ronald Reagan Washington National to Seattle - Tacoma Intl., returning Fri, Jun 6, priced at $249 found 9 hours ago
Wed, May 28 - Wed, Jun 4
DCA
Ronald Reagan Washington National
SEA
Seattle - Tacoma Intl.
$253 Roundtrip, found 6 hours ago
$253
Roundtrip
found 6 hours ago
Select Alaska Airlines flight, departing Wed, May 28 from Ronald Reagan Washington National to Seattle - Tacoma Intl., returning Wed, Jun 4, priced at $253 found 6 hours ago
Wed, Jun 4 - Tue, Jun 10
DCA
Ronald Reagan Washington National
SEA
Seattle - Tacoma Intl.
$257 Roundtrip, found 2 hours ago
$257
Roundtrip
found 2 hours ago
Select Alaska Airlines flight, departing Wed, Jun 4 from Ronald Reagan Washington National to Seattle - Tacoma Intl., returning Tue, Jun 10, priced at $257 found 2 hours ago
Wed, Jun 4 - Tue, Jun 10
DCA
Ronald Reagan Washington National
SEA
Seattle - Tacoma Intl.
$259 Roundtrip, found 2 hours ago
$259
Roundtrip
found 2 hours ago
Select Alaska Airlines flight, departing Wed, Jun 4 from Ronald Reagan Washington National to Seattle - Tacoma Intl., returning Tue, Jun 10, priced at $259 found 2 hours ago
Tue, Jun 3 - Tue, Jun 10
DCA
Ronald Reagan Washington National
SEA
Seattle - Tacoma Intl.
$262 Roundtrip, found 2 hours ago
$262
Roundtrip
found 2 hours ago
Select Alaska Airlines flight, departing Tue, Jun 3 from Ronald Reagan Washington National to Seattle - Tacoma Intl., returning Tue, Jun 10, priced at $262 found 2 hours ago
Wed, May 28 - Fri, May 30
DCA
Ronald Reagan Washington National
SEA
Seattle - Tacoma Intl.
$263 Roundtrip, found 11 hours ago
$263
Roundtrip
found 11 hours ago
Select Alaska Airlines flight, departing Wed, May 28 from Ronald Reagan Washington National to Seattle - Tacoma Intl., returning Fri, May 30, priced at $263 found 11 hours ago
Wed, Jun 4 - Tue, Jun 10
DCA
Ronald Reagan Washington National
SEA
Seattle - Tacoma Intl.
$267 Roundtrip, found 2 hours ago
$267
Roundtrip
found 2 hours ago
Select Alaska Airlines flight, departing Wed, Jun 4 from Ronald Reagan Washington National to Seattle - Tacoma Intl., returning Tue, Jun 10, priced at $267 found 2 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.