Alaska Airlines Flight 172 Deals & Information (2026/2027)

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Alaska Airlines Flight 172 Route Deals From $365

The cheapest prices found with in the last 7 days for return flights were $706 and $365 for one-way flights to Seattle - Tacoma Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Mon, May 25 - Mon, Aug 3
ICN
Incheon Intl.
SEA
Seattle - Tacoma Intl.
$706 Roundtrip, found 17 hours ago
$706
Roundtrip
found 17 hours ago
Select Alaska Airlines flight, departing Mon, May 25 from Incheon Intl. to Seattle - Tacoma Intl., returning Mon, Aug 3, priced at $706 found 17 hours ago
Wed, Jun 3 - Fri, Jul 31
ICN
Incheon Intl.
SEA
Seattle - Tacoma Intl.
$744 Roundtrip, found 15 hours ago
$744
Roundtrip
found 15 hours ago
Select Alaska Airlines flight, departing Wed, Jun 3 from Incheon Intl. to Seattle - Tacoma Intl., returning Fri, Jul 31, priced at $744 found 15 hours ago
Fri, Jun 5 - Sun, Jun 21
ICN
Incheon Intl.
SEA
Seattle - Tacoma Intl.
$753 Roundtrip, found 11 hours ago
$753
Roundtrip
found 11 hours ago
Select Alaska Airlines flight, departing Fri, Jun 5 from Incheon Intl. to Seattle - Tacoma Intl., returning Sun, Jun 21, priced at $753 found 11 hours ago
Mon, Jun 15 - Sun, Jul 12
ICN
Incheon Intl.
SEA
Seattle - Tacoma Intl.
$757 Roundtrip, found 17 hours ago
$757
Roundtrip
found 17 hours ago
Select Alaska Airlines flight, departing Mon, Jun 15 from Incheon Intl. to Seattle - Tacoma Intl., returning Sun, Jul 12, priced at $757 found 17 hours ago
Thu, May 21 - Sun, Aug 2
ICN
Incheon Intl.
SEA
Seattle - Tacoma Intl.
$776 Roundtrip, found 3 days ago
$776
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Thu, May 21 from Incheon Intl. to Seattle - Tacoma Intl., returning Sun, Aug 2, priced at $776 found 3 days ago
Wed, May 6 - Wed, Jun 3
ICN
Incheon Intl.
SEA
Seattle - Tacoma Intl.
$789 Roundtrip, found 5 days ago
$789
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Wed, May 6 from Incheon Intl. to Seattle - Tacoma Intl., returning Wed, Jun 3, priced at $789 found 5 days ago
Fri, Jun 26 - Sat, Jul 4
ICN
Incheon Intl.
SEA
Seattle - Tacoma Intl.
$795 Roundtrip, found 18 hours ago
$795
Roundtrip
found 18 hours ago
Select Alaska Airlines flight, departing Fri, Jun 26 from Incheon Intl. to Seattle - Tacoma Intl., returning Sat, Jul 4, priced at $795 found 18 hours ago
Thu, Oct 29 - Thu, Nov 5
ICN
Incheon Intl.
SEA
Seattle - Tacoma Intl.
$799 Roundtrip, found 12 hours ago
$799
Roundtrip
found 12 hours ago
Select Alaska Airlines flight, departing Thu, Oct 29 from Incheon Intl. to Seattle - Tacoma Intl., returning Thu, Nov 5, priced at $799 found 12 hours ago
Mon, Jun 8 - Sat, Jul 4
ICN
Incheon Intl.
SEA
Seattle - Tacoma Intl.
$814 Roundtrip, found 4 days ago
$814
Roundtrip
found 4 days ago
Select Alaska Airlines flight, departing Mon, Jun 8 from Incheon Intl. to Seattle - Tacoma Intl., returning Sat, Jul 4, priced at $814 found 4 days ago
Thu, May 28 - Sun, Jun 7
ICN
Incheon Intl.
SEA
Seattle - Tacoma Intl.
$820 Roundtrip, found 12 hours ago
$820
Roundtrip
found 12 hours ago
Select Alaska Airlines flight, departing Thu, May 28 from Incheon Intl. to Seattle - Tacoma Intl., returning Sun, Jun 7, priced at $820 found 12 hours ago

Frequently asked questions

What route does flight number AS172 take?
AS172 takes about 5 hours and 20 minutes to fly directly from Ted Stevens Anchorage Intl. Airport (ANC) to Sky Harbor Intl. Airport (PHX). Sure, there's magic in the destination, but half the fun is in the journey!
How often is AS172 on time?
Alaska Airlines flight number AS172 between ANC and PHX leaves on time 95% of the time — so you can relax with confidence knowing that you will reach your destination ASAP. If this flight is delayed, you're likely to wait around 8 minutes. This route has a 4.85-star rating.
What terminal does AS172 fly out of?
Flights to and from ANC and Phoenix, AZ Airport (PHX-Sky Harbor Intl.) are served by AS172, and travelers booked on this flight typically board from Terminal S.
What kind of plane is on flight number AS172?
Get ready to cruise aboard a Boeing 737-800 if you're booked on flight AS172. The majority of flights from ANC to Phoenix Sky Harbor Intl. Airport use this aircraft model.
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 AS172 flight with Travelocity, please visit our Customer Service Portal.