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

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Alaska Airlines Flight 1 Route Deals From $158

The cheapest prices found with in the last 7 days for return flights were $268 and $158 for one-way flights to Seattle - Tacoma Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Aug 25 - Wed, Sep 2
DCA
Ronald Reagan Washington National
SEA
Seattle - Tacoma Intl.
$268 Roundtrip, found 9 hours ago
$268
Roundtrip
found 9 hours ago
Select Alaska Airlines flight, departing Tue, Aug 25 from Ronald Reagan Washington National to Seattle - Tacoma Intl., returning Wed, Sep 2, priced at $268 found 9 hours ago
Tue, Aug 25 - Wed, Sep 2
DCA
Ronald Reagan Washington National
SEA
Seattle - Tacoma Intl.
$274 Roundtrip, found 9 hours ago
$274
Roundtrip
found 9 hours ago
Select Alaska Airlines flight, departing Tue, Aug 25 from Ronald Reagan Washington National to Seattle - Tacoma Intl., returning Wed, Sep 2, priced at $274 found 9 hours ago
Tue, Aug 25 - Sat, Aug 29
DCA
Ronald Reagan Washington National
SEA
Seattle - Tacoma Intl.
$282 Roundtrip, found 9 hours ago
$282
Roundtrip
found 9 hours ago
Select Alaska Airlines flight, departing Tue, Aug 25 from Ronald Reagan Washington National to Seattle - Tacoma Intl., returning Sat, Aug 29, priced at $282 found 9 hours ago
Tue, Aug 25 - Sat, Aug 29
DCA
Ronald Reagan Washington National
SEA
Seattle - Tacoma Intl.
$288 Roundtrip, found 9 hours ago
$288
Roundtrip
found 9 hours ago
Select Alaska Airlines flight, departing Tue, Aug 25 from Ronald Reagan Washington National to Seattle - Tacoma Intl., returning Sat, Aug 29, priced at $288 found 9 hours ago
Tue, Sep 1 - Wed, Sep 9
DCA
Ronald Reagan Washington National
SEA
Seattle - Tacoma Intl.
$288 Roundtrip, just found
$288
Roundtrip
just found
Select Alaska Airlines flight, departing Tue, Sep 1 from Ronald Reagan Washington National to Seattle - Tacoma Intl., returning Wed, Sep 9, priced at $288 just found
Tue, Aug 25 - Sat, Aug 29
DCA
Ronald Reagan Washington National
SEA
Seattle - Tacoma Intl.
$292 Roundtrip, found 9 hours ago
$292
Roundtrip
found 9 hours ago
Select Alaska Airlines flight, departing Tue, Aug 25 from Ronald Reagan Washington National to Seattle - Tacoma Intl., returning Sat, Aug 29, priced at $292 found 9 hours ago
Sat, Aug 29 - Tue, Sep 1
DCA
Ronald Reagan Washington National
SEA
Seattle - Tacoma Intl.
$293 Roundtrip, just found
$293
Roundtrip
just found
Select Alaska Airlines flight, departing Sat, Aug 29 from Ronald Reagan Washington National to Seattle - Tacoma Intl., returning Tue, Sep 1, priced at $293 just found
Sat, Aug 29 - Tue, Sep 1
DCA
Ronald Reagan Washington National
SEA
Seattle - Tacoma Intl.
$299 Roundtrip, just found
$299
Roundtrip
just found
Select Alaska Airlines flight, departing Sat, Aug 29 from Ronald Reagan Washington National to Seattle - Tacoma Intl., returning Tue, Sep 1, priced at $299 just found
Tue, Sep 1 - Wed, Sep 9
DCA
Ronald Reagan Washington National
SEA
Seattle - Tacoma Intl.
$305 Roundtrip, just found
$305
Roundtrip
just found
Select Alaska Airlines flight, departing Tue, Sep 1 from Ronald Reagan Washington National to Seattle - Tacoma Intl., returning Wed, Sep 9, priced at $305 just found
Sat, Sep 5 - Wed, Sep 9
DCA
Ronald Reagan Washington National
SEA
Seattle - Tacoma Intl.
$310 Roundtrip, found 4 days ago
$310
Roundtrip
found 4 days ago
Select Alaska Airlines flight, departing Sat, Sep 5 from Ronald Reagan Washington National to Seattle - Tacoma Intl., returning Wed, Sep 9, priced at $310 found 4 days 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.