$151+ Cheap flights from Austin to Seattle (AUS - SEA)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/18. Fares are subject to change and may not be available on all flights or dates of travel.
AUS — SEA
Oct 18 — Oct 251
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Austin to Seattle with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheapflights Tip: The best prices from Austin Bergstrom to Seattle/Tacoma Intl are usually found in January or April, booked 62 days in advance, depart on a Thursday or Wednesday and return on a Tuesday
Cheap flight deals from Austin to Seattle
Cheapest
Best
Last-minute
One-way
Cheapest flights from Austin to SeattleExplore the most affordable flight options available from Austin to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 18, 2026.
Explore the most affordable flight options available from Austin to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 18, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/63:32 pm -
1 stop20h 10m
Wed 10/79:45 pm -
1 stop11h 38m
Deal found 9/17![Frontier logo]()
$259
This Kiwi.com deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/281:17 pm -
1 stop22h 28m
Fri 10/309:13 pm -
1 stop13h 09m
Deal found 9/16![Frontier logo]()
$261
This Kiwi.com deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/512:12 pm -
1 stop8h 16m
Wed 10/145:08 pm -
Nonstop4h 06m
Deal found 9/16![Multiple Airlines logo]()
$262
This Southwest deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/269:30 am -
2 stops10h 00m
Thu 12/36:10 am -
1 stop8h 05m
Deal found 9/16![Southwest logo]()
$264
This Kiwi.com deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/1812:18 pm -
1 stop23h 30m
Wed 10/285:08 pm -
Nonstop4h 06m
Deal found 9/16![Multiple Airlines logo]()
$265
This Kiwi.com deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/269:12 pm -
1 stop15h 47m
Sat 10/318:15 am -
Nonstop4h 20m
Deal found 9/17![Multiple Airlines logo]()
$268
This Southwest deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/62:00 pm -
2 stops11h 00m
Wed 10/145:35 am -
1 stop8h 55m
Deal found 9/16![Southwest logo]()
$269
This Alaska Airlines deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/308:30 am -
Nonstop4h 33m
Fri 10/305:08 pm -
Nonstop4h 06m
Deal found 9/16![Alaska Airlines logo]()
$270
This Kiwi.com deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/512:12 pm -
1 stop8h 16m
Tue 10/135:08 pm -
Nonstop4h 06m
Deal found 9/17![Multiple Airlines logo]()
$272
This Kiwi.com deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/63:32 pm -
1 stop20h 10m
Mon 10/195:08 pm -
Nonstop4h 06m
Deal found 9/17![Multiple Airlines logo]()
$273
This American Airlines deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/75:00 am -
1 stop6h 33m
Sun 10/1112:25 am -
1 stop6h 08m
Deal found 9/16![American Airlines logo]()
$274
This Southwest deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/158:30 pm -
1 stop7h 10m
Mon 10/198:40 pm -
1 stop12h 30m
Deal found 9/17![Southwest logo]()
$275
Best flights from Austin to SeattleDiscover carefully curated flight deals from Austin to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 18, 2026.
Discover carefully curated flight deals from Austin to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 18, 2026.
This Alaska Airlines deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/247:07 pm -
Nonstop4h 35m
Wed 10/2810:20 am -
1 stop10h 07m
Deal found 9/17![Alaska Airlines logo]()
$262
This Southwest deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/137:25 pm -
1 stop6h 30m
Wed 10/281:25 pm -
2 stops7h 35m
Deal found 9/16![Southwest logo]()
$292
This United Airlines deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/102:26 pm -
1 stop6h 37m
Sun 10/1811:59 pm -
1 stop6h 38m
Deal found 9/17![United Airlines logo]()
$294
This Delta deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/127:23 am -
1 stop7h 17m
Sun 10/1811:00 am -
Nonstop4h 11m
Deal found 9/15![Delta logo]()
$355
This Southwest deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/231:55 pm -
2 stops10h 40m
Mon 10/268:40 pm -
1 stop12h 30m
Deal found 9/16![Southwest logo]()
$297
This United Airlines deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/55:39 pm -
1 stop7h 06m
Tue 10/1311:59 pm -
1 stop6h 38m
Deal found 9/16![United Airlines logo]()
$362
This Alaska Airlines deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/177:15 am -
2 stops9h 38m
Sat 10/175:08 pm -
Nonstop4h 06m
Deal found 9/13![Alaska Airlines logo]()
$365
This Delta deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/154:25 pm -
1 stop7h 33m
Sun 10/1811:50 pm -
1 stop19h 40m
Deal found 9/16![Delta logo]()
$377
This Southwest deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/153:40 pm -
Nonstop4h 30m
Mon 10/199:00 am -
Nonstop4h 05m
Deal found 9/17![Southwest logo]()
$357
This Alaska Airlines deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/63:38 pm -
Nonstop4h 35m
Sat 10/105:08 pm -
Nonstop4h 06m
Deal found 9/16![Alaska Airlines logo]()
$367
This Southwest deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/65:55 pm -
1 stop7h 05m
Sun 10/115:15 am -
1 stop5h 50m
Deal found 9/14![Southwest logo]()
$370
This Alaska Airlines deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/147:00 am -
1 stop7h 30m
Sat 10/1712:24 am -
1 stop6h 10m
Deal found 9/17![Alaska Airlines logo]()
$377
Last-minute flights from Austin to SeattleDiscover last-minute flight deals from Austin to Seattle. Data last updated September 18, 2026 and is based on user searches.
Discover last-minute flight deals from Austin to Seattle. Data last updated September 18, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/512:12 pm -
1 stop8h 16m
Wed 10/145:08 pm -
Nonstop4h 06m
Deal found 9/16![Multiple Airlines logo]()
$262
This Kiwi.com deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/512:12 pm -
1 stop8h 16m
Tue 10/135:08 pm -
Nonstop4h 06m
Deal found 9/17![Multiple Airlines logo]()
$272
This Kiwi.com deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/63:32 pm -
1 stop20h 10m
Wed 10/79:45 pm -
1 stop11h 38m
Deal found 9/17![Frontier logo]()
$259
This Southwest deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/62:00 pm -
2 stops11h 00m
Wed 10/145:35 am -
1 stop8h 55m
Deal found 9/16![Southwest logo]()
$269
This Kiwi.com deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/63:32 pm -
1 stop20h 10m
Mon 10/195:08 pm -
Nonstop4h 06m
Deal found 9/17![Multiple Airlines logo]()
$273
This Kiwi.com deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/63:32 pm -
1 stop20h 10m
Fri 10/94:27 pm -
1 stop24h 59m
Deal found 9/16![Frontier logo]()
$276
This American Airlines deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/75:00 am -
1 stop6h 33m
Sun 10/1112:25 am -
1 stop6h 08m
Deal found 9/16![American Airlines logo]()
$274
This Southwest deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/158:30 pm -
1 stop7h 10m
Mon 10/198:40 pm -
1 stop12h 30m
Deal found 9/17![Southwest logo]()
$275
This Kiwi.com deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/1812:18 pm -
1 stop23h 30m
Wed 10/285:08 pm -
Nonstop4h 06m
Deal found 9/16![Multiple Airlines logo]()
$265
This Kiwi.com deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/269:12 pm -
1 stop15h 47m
Sat 10/318:15 am -
Nonstop4h 20m
Deal found 9/17![Multiple Airlines logo]()
$268
This Kiwi.com deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/281:17 pm -
1 stop22h 28m
Fri 10/309:13 pm -
1 stop13h 09m
Deal found 9/16![Frontier logo]()
$261
This Alaska Airlines deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/308:30 am -
Nonstop4h 33m
Fri 10/305:08 pm -
Nonstop4h 06m
Deal found 9/16![Alaska Airlines logo]()
$270
One-way flights from Austin to SeattleSearch for one-way flight options from Austin to Seattle. Find affordable one-way fares based on user searches. Data last updated September 18, 2026.
Search for one-way flight options from Austin to Seattle. Find affordable one-way fares based on user searches. Data last updated September 18, 2026.
This Southwest deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/184:35 pm -
Nonstop4h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/16![Southwest logo]()
$151
This Kiwi.com deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/110:50 pm -
2 stops18h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/17![Frontier logo]()
$152
This Southwest deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/105:35 am -
2 stops8h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/17![Southwest logo]()
$153
This Alaska Airlines deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/98:44 pm -
1 stop14h 12m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/18![Alaska Airlines logo]()
$154
This Expedia deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 1/197:15 am -
Nonstop4h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/16![Alaska Airlines logo]()
$155
This iWofly deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure iWofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/168:28 pm -
1 stop22h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/18![Frontier logo]()
$156
This Orbitz deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/317:15 am -
Nonstop4h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/16![Alaska Airlines logo]()
$157
This Kiwi.com deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/141:12 pm -
1 stop21h 46m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/14![Frontier logo]()
$160
This Southwest deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/185:40 am -
1 stop6h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/16![Southwest logo]()
$161
This Super.com deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/2512:18 pm -
1 stop23h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/18![Frontier logo]()
$162
This Super.com deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/81:08 pm -
1 stop22h 37m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/15![Frontier logo]()
$163
Find flight deals from Austin to Seattle
Discover tips and strategies to find the most affordable flight options for your journey from Austin (AUS) to Seattle (SEA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 18, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $259 (Kiwi.com) |
One-way from | $151 (Southwest) |
Popular in | July |
Cheapest in | January |
Average price | $376 |
Good round-trip deal | $338 or less |
Good one-way deal | $222 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Austin to Seattle that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated September 18, 2026.
Use the filters below to find and compare flights from Austin to Seattle that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
AustinSeattle
AUS Austin Bergstrom - SEA Seattle/Tacoma Intl
AUSSEA
Austin Bergstrom
Sat 10/10
5:35 am-11:55 am
2 stops8h 20m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$153
Quickest round-trip
AustinSeattle
AUS Austin Bergstrom - SEA Seattle/Tacoma Intl
AUSSEA
Austin Bergstrom
Sun 10/11
6:00 am-8:41 am
Nonstop4h 41m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$169
AustinSeattle
AUS Austin Bergstrom - SEA Seattle/Tacoma Intl
AUSSEA
Austin Bergstrom
Fri 11/27
8:34 am-11:18 am
Nonstop4h 44m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$169
AustinSeattle
AUS Austin Bergstrom - SEA Seattle/Tacoma Intl
AUSSEA
Austin Bergstrom
Fri 12/11
6:00 am-8:52 am
Nonstop4h 52m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$169
AustinSeattle
AUS Austin Bergstrom - SEA Seattle/Tacoma Intl
AUSSEA
Austin Bergstrom
Sat 10/31
6:00 am-8:41 am
Nonstop4h 41m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$169
AustinSeattle
AUS Austin Bergstrom - SEA Seattle/Tacoma Intl
AUSSEA
Austin Bergstrom
Fri 11/27
6:00 am-8:45 am
Nonstop4h 45m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$169
AustinSeattle
AUS Austin Bergstrom - SEA Seattle/Tacoma Intl
AUSSEA
Austin Bergstrom
Thu 12/17
6:00 am-8:52 am
Nonstop4h 52m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$169
AustinSeattle
AUS Austin Bergstrom - SEA Seattle/Tacoma Intl
AUSSEA
Austin Bergstrom
Sun 10/18
6:00 am-8:41 am
Nonstop4h 41m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$169
AustinSeattle
AUS Austin Bergstrom - SEA Seattle/Tacoma Intl
AUSSEA
Austin Bergstrom
Wed 12/2
8:00 am-4:22 pm
2 stops10h 22m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$178
AustinSeattle
AUS Austin Bergstrom - SEA Seattle/Tacoma Intl
AUSSEA
Austin Bergstrom
Sun 12/6
2:29 pm-6:53 pm
1 stop6h 24m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$179
Showing 1-10 of 23 resultsSorted by cheapest first
Compare providers for flights from Austin to Seattle
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Austin to Seattle in September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Austin-Seattle flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Austin-Seattle flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Austin-Seattle flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Austin-Seattle flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Austin-Seattle flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Austin to Seattle
Have a flexible travel schedule? Discover the best time to fly to Seattle from Austin with our price prediction graph.
AUS-SEA
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Austin to Seattle
Prices
Airlines
Delays
How far ahead should I book a flight from Austin to Seattle?
Booking 61 days in advance of your planned departure date is, on average, the best time to get cheap flights from Austin to Seattle. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
What is the cheapest month to book a flight from Austin to Seattle?
Currently, January is the cheapest month in which you can book a flight from Austin to Seattle (average of $232). Flying from Austin to Seattle in July is currently the most expensive (average of $447). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from AUS to SEA?
Find hourly flight availability from Austin to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 18, 2026.
A simple way to save on the total cost of your ticket is to fly from Austin to Seattle in the afternoon. If you’re flexible enough to do this you can expect to save up to 11% on your trip compared to booking a flight in the morning.
What is the cheapest day to fly from Austin to Seattle?
Use this chart to determine the cheapest time to fly round-trip from Austin to Seattle. Price data was last updated on September 12, 2026.
Travelers seeking maximum savings on their Austin to Seattle flight should consider departing on Thursday at noon when fares are most often at their lowest. Sunday evenings flights should be avoided if possible as fares are typically the most expensive at this time.
How often are flights from Austin to Seattle delayed?
About 10% of weekly flights between Austin and Seattle have experienced delays in the past year, with the average delay time being 164 minutes.
What is the most punctual flight time for Austin to Seattle flights?
Historically, flights departing at night are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Saturday tends to have the lowest number of delays on this route, whereas Thursday has historically faced a higher average of delays compared to other days of the week.
Which airline has the best punctuality record on Austin to Seattle flights?
Over the last year, Alaska Airlines have had the lowest number of delays on this route, with just 9% of flights being delayed.
The best insider tips for Austin to Seattle flights
AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your Austin to Seattle trip
Our travel experts
Reviews of airlines servicing Seattle
Get insights into the airlines that provide service to Seattle. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Seattle. Reviews last updated September 18, 2026.
Peruse reviews from past customers who have flown with Southwest,Alaska Airlines, andDelta from Austin to Seattle to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.1
Comfort
8.0
Crew
8.6
Entertainment
7.5
Overall
8.0
Food
7.0
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Boarding
8.1
Comfort
8.0
Crew
8.6
Entertainment
7.5
Overall
8.0
Food
7.0
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Boarding
8.1
Comfort
8.0
Crew
8.6
Entertainment
7.5
Overall
8.0
Food
7.0
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Boarding
8.1
Comfort
8.0
Crew
8.6
Entertainment
7.5
Overall
8.0
Food
7.0
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Boarding
8.1
Comfort
8.0
Crew
8.6
Entertainment
7.5
Overall
8.0
Food
7.0
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Boarding
8.1
Comfort
8.0
Crew
8.6
Entertainment
7.5
Overall
8.0
Food
7.0
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Related info for your journey
Find useful and relevant information for your journey from Austin to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Seattle?
Book flights to Seattle if you plan to visit one of these locationsSeaTac
Renton
Tacoma
Lacey
Leavenworth
Olympia
Tukwila
Snoqualmie
Puyallup
Lynnwood
Centralia
Kent
Tumwater
Ellensburg
Issaquah
Marysville
Ocean Shores
Lakewood
Fife
Poulsbo
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
Other flight options
Other flights from Austin
Popular flights
Seattle flight routes
Alternative routes for Austin to Seattle
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Seattle by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Austin to Seattle by cabin class
Find flights from Austin to Seattle, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Austin and Seattle flights
Browse other Austin and Seattle flight options. Last updated on September 18, 2026.
Other flights from Austin
Browse through other flights departing from Austin. Flights are based on user searches made on Cheapflights and were last updated on September 18, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Other flights to Seattle
Explore flights to Seattle departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 18, 2026.
Top 6 airlines flying from Austin to Seattle
Discover the top 6 airlines that operate flights from Austin to Seattle. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated September 18, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$146 | Average$311 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$178 | Average$379 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$179 | Average$367 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$218 | Average$422 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$238 | Average$377 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$291 | Average$545 | FlexibilityNo cancel fee | On-time71% |