Alaska Airlines Flight 409 Deals & Information (2026/2027)

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Alaska Airlines Flight 409 Route Deals From $144

The cheapest prices found with in the last 7 days for return flights were $247 and $144 for one-way flights to Seattle - Tacoma Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Sat, Dec 5 - Sat, Dec 12
IAD
Washington Dulles Intl.
SEA
Seattle - Tacoma Intl.
$247 Roundtrip, just found
$247
Roundtrip
just found
Select Alaska Airlines flight, departing Sat, Dec 5 from Washington Dulles Intl. to Seattle - Tacoma Intl., returning Sat, Dec 12, priced at $247 just found
Fri, Dec 4 - Mon, Dec 7
IAD
Washington Dulles Intl.
SEA
Seattle - Tacoma Intl.
$277 Roundtrip, just found
$277
Roundtrip
just found
Select Alaska Airlines flight, departing Fri, Dec 4 from Washington Dulles Intl. to Seattle - Tacoma Intl., returning Mon, Dec 7, priced at $277 just found
Sun, Dec 6 - Mon, Dec 7
IAD
Washington Dulles Intl.
SEA
Seattle - Tacoma Intl.
$287 Roundtrip, just found
$287
Roundtrip
just found
Select Alaska Airlines flight, departing Sun, Dec 6 from Washington Dulles Intl. to Seattle - Tacoma Intl., returning Mon, Dec 7, priced at $287 just found
Fri, Dec 4 - Mon, Dec 7
IAD
Washington Dulles Intl.
SEA
Seattle - Tacoma Intl.
$313 Roundtrip, just found
$313
Roundtrip
just found
Select Alaska Airlines flight, departing Fri, Dec 4 from Washington Dulles Intl. to Seattle - Tacoma Intl., returning Mon, Dec 7, priced at $313 just found
Mon, Dec 14 - Tue, Dec 15
IAD
Washington Dulles Intl.
SEA
Seattle - Tacoma Intl.
$317 Roundtrip, found 1 hour ago
$317
Roundtrip
found 1 hour ago
Select Alaska Airlines flight, departing Mon, Dec 14 from Washington Dulles Intl. to Seattle - Tacoma Intl., returning Tue, Dec 15, priced at $317 found 1 hour ago
Sat, Dec 12 - Sun, Dec 13
IAD
Washington Dulles Intl.
SEA
Seattle - Tacoma Intl.
$318 Roundtrip, just found
$318
Roundtrip
just found
Select Alaska Airlines flight, departing Sat, Dec 12 from Washington Dulles Intl. to Seattle - Tacoma Intl., returning Sun, Dec 13, priced at $318 just found
Sun, Dec 6 - Mon, Dec 7
IAD
Washington Dulles Intl.
SEA
Seattle - Tacoma Intl.
$323 Roundtrip, just found
$323
Roundtrip
just found
Select Alaska Airlines flight, departing Sun, Dec 6 from Washington Dulles Intl. to Seattle - Tacoma Intl., returning Mon, Dec 7, priced at $323 just found
Mon, Dec 14 - Tue, Dec 15
IAD
Washington Dulles Intl.
SEA
Seattle - Tacoma Intl.
$332 Roundtrip, found 1 hour ago
$332
Roundtrip
found 1 hour ago
Select Alaska Airlines flight, departing Mon, Dec 14 from Washington Dulles Intl. to Seattle - Tacoma Intl., returning Tue, Dec 15, priced at $332 found 1 hour ago
Sun, Dec 6 - Mon, Dec 7
IAD
Washington Dulles Intl.
SEA
Seattle - Tacoma Intl.
$338 Roundtrip, just found
$338
Roundtrip
just found
Select Alaska Airlines flight, departing Sun, Dec 6 from Washington Dulles Intl. to Seattle - Tacoma Intl., returning Mon, Dec 7, priced at $338 just found
Mon, Dec 14 - Mon, Dec 21
IAD
Washington Dulles Intl.
SEA
Seattle - Tacoma Intl.
$342 Roundtrip, just found
$342
Roundtrip
just found
Select Alaska Airlines flight, departing Mon, Dec 14 from Washington Dulles Intl. to Seattle - Tacoma Intl., returning Mon, Dec 21, priced at $342 just found
Fri, Dec 11 - Sun, Dec 13
IAD
Washington Dulles Intl.
SEA
Seattle - Tacoma Intl.
$344 Roundtrip, just found
$344
Roundtrip
just found
Select Alaska Airlines flight, departing Fri, Dec 11 from Washington Dulles Intl. to Seattle - Tacoma Intl., returning Sun, Dec 13, priced at $344 just found
Mon, Dec 14 - Sun, Dec 20
IAD
Washington Dulles Intl.
SEA
Seattle - Tacoma Intl.
$348 Roundtrip, found 1 hour ago
$348
Roundtrip
found 1 hour ago
Select Alaska Airlines flight, departing Mon, Dec 14 from Washington Dulles Intl. to Seattle - Tacoma Intl., returning Sun, Dec 20, priced at $348 found 1 hour ago
Sat, Dec 5 - Thu, Dec 10
IAD
Washington Dulles Intl.
SEA
Seattle - Tacoma Intl.
$348 Roundtrip, just found
$348
Roundtrip
just found
Select Alaska Airlines flight, departing Sat, Dec 5 from Washington Dulles Intl. to Seattle - Tacoma Intl., returning Thu, Dec 10, priced at $348 just found
Sun, Dec 13 - Wed, Dec 16
IAD
Washington Dulles Intl.
SEA
Seattle - Tacoma Intl.
$354 Roundtrip, just found
$354
Roundtrip
just found
Select Alaska Airlines flight, departing Sun, Dec 13 from Washington Dulles Intl. to Seattle - Tacoma Intl., returning Wed, Dec 16, priced at $354 just found

Frequently asked questions

What route does flight number AS409 take?
Flight number AS409 operates non-stop from Portland Intl. Airport (PDX) to Seattle, WA Airport (SEA-Seattle - Tacoma Intl.). During this journey, you'll be in the air for roughly 1 hour. Book ahead to get your preferred seat.
How often is AS409 on time?
Roughly 87% of AS409 flights arrive according to scheduled times — so if you're taking to the skies between PDX and Sea-Tac Airport, you can breathe easy knowing that you'll reach your destination ASAP. In the rare event that this Alaska Airlines plane runs late, the average wait time is around 19 minutes. Due to the airline's high standard, this route has a star rating of 3.85.
What kind of plane is on flight number AS409?
The Airbus A320 is the type of plane that's generally used for flight number AS409. This flight almost always sets off from Portland Airport and arrives at SEA.
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 AS409 flight with Travelocity, please visit our Customer Service Portal.