Alaska Airlines Flight 3 Deals & Information (2026/2027)

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Alaska Airlines Flight 3 Route Deals From $148

The cheapest prices found with in the last 7 days for return flights were $259 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.
$259 Roundtrip, found 3 days ago
$259
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Tue, May 5 from Ronald Reagan Washington National to Seattle - Tacoma Intl., returning Fri, May 8, priced at $259 found 3 days ago
Tue, May 5 - Fri, May 8
DCA
Ronald Reagan Washington National
SEA
Seattle - Tacoma Intl.
$269 Roundtrip, found 3 days ago
$269
Roundtrip
found 3 days 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 3 days ago
Sat, Sep 5 - Thu, Sep 10
DCA
Ronald Reagan Washington National
SEA
Seattle - Tacoma Intl.
$270 Roundtrip, found 4 hours ago
$270
Roundtrip
found 4 hours ago
Select Alaska Airlines flight, departing Sat, Sep 5 from Ronald Reagan Washington National to Seattle - Tacoma Intl., returning Thu, Sep 10, priced at $270 found 4 hours ago
Mon, May 4 - Fri, May 8
DCA
Ronald Reagan Washington National
SEA
Seattle - Tacoma Intl.
$275 Roundtrip, just found
$275
Roundtrip
just found
Select Alaska Airlines flight, departing Mon, May 4 from Ronald Reagan Washington National to Seattle - Tacoma Intl., returning Fri, May 8, priced at $275 just found
Tue, Apr 28 - Fri, May 8
DCA
Ronald Reagan Washington National
SEA
Seattle - Tacoma Intl.
$280 Roundtrip, found 4 hours ago
$280
Roundtrip
found 4 hours ago
Select Alaska Airlines flight, departing Tue, Apr 28 from Ronald Reagan Washington National to Seattle - Tacoma Intl., returning Fri, May 8, priced at $280 found 4 hours ago
Tue, Apr 28 - Fri, May 8
DCA
Ronald Reagan Washington National
SEA
Seattle - Tacoma Intl.
$285 Roundtrip, found 4 hours ago
$285
Roundtrip
found 4 hours ago
Select Alaska Airlines flight, departing Tue, Apr 28 from Ronald Reagan Washington National to Seattle - Tacoma Intl., returning Fri, May 8, priced at $285 found 4 hours ago
Sat, May 2 - Sun, May 10
DCA
Ronald Reagan Washington National
SEA
Seattle - Tacoma Intl.
$300 Roundtrip, found 1 hour ago
$300
Roundtrip
found 1 hour ago
Select Alaska Airlines flight, departing Sat, May 2 from Ronald Reagan Washington National to Seattle - Tacoma Intl., returning Sun, May 10, priced at $300 found 1 hour ago
Tue, Jun 9 - Tue, Jun 16
DCA
Ronald Reagan Washington National
SEA
Seattle - Tacoma Intl.
$304 Roundtrip, found 2 hours ago
$304
Roundtrip
found 2 hours ago
Select Alaska Airlines flight, departing Tue, Jun 9 from Ronald Reagan Washington National to Seattle - Tacoma Intl., returning Tue, Jun 16, priced at $304 found 2 hours ago
Sat, May 2 - Sun, May 10
DCA
Ronald Reagan Washington National
SEA
Seattle - Tacoma Intl.
$311 Roundtrip, found 1 hour ago
$311
Roundtrip
found 1 hour ago
Select Alaska Airlines flight, departing Sat, May 2 from Ronald Reagan Washington National to Seattle - Tacoma Intl., returning Sun, May 10, priced at $311 found 1 hour ago

Frequently asked questions

What route does flight number AS3 take?
You'll be landing at SEA from National Airport if you've booked a ticket on flight number AS3. You'll be in the sky for 5 hours and 58 minutes during this trip. It's also worthwhile noting that the flight conveniently travels direct.
How often is AS3 on time?
If you're traveling on Alaska Airlines flight number AS3 between Ronald Reagan Washington National Airport (DCA) and Seattle - Tacoma Intl. Airport (SEA), it's assuring to know that 90% of these journeys reach their destination on time. If your plane happens to be delayed, the average wait time is around 16 minutes. This service has a 4.3-star rating.
What terminal does AS3 fly out of?
Flights between National Airport and Sea-Tac Airport are served by flight number AS3, and passengers traveling on this flight normally board from Terminal B.
What kind of plane is on flight number AS3?
The Airbus A321 is the aircraft type most often used for flight AS3. Usually, this flight takes off from DCA and touches down at Sea-Tac Airport.
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 AS3 flight with Travelocity, please visit our Customer Service Portal.