$151+ Cheap flights from Knoxville to Seattle (TYS - SEA)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/10. Fares are subject to change and may not be available on all flights or dates of travel.
TYS — SEA
Jul 15 — Jul 221
Round-trip
1 adult, Economy
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Cheapest flights from Knoxville to SeattleExplore the most affordable flight options available from Knoxville to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 15, 2026.
Explore the most affordable flight options available from Knoxville to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 15, 2026.
This Delta deal was found by Cheapflights users on 6/11. 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.
Wed 10/1411:30 am
TYS
- SEA
1 stop10h 08m
Delta
Mon 11/21:45 pm
SEA
- TYS
1 stop6h 17m
Delta
Deal found 6/11![Delta logo]()
$287
This United Airlines deal was found by Cheapflights users on 6/11. 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 9/56:02 pm
TYS
- SEA
1 stop7h 41m
United Airlines
Wed 9/911:00 pm
SEA
- TYS
1 stop7h 57m
United Airlines
Deal found 6/11![United Airlines logo]()
$314
This Southwest deal was found by Cheapflights users on 6/10. 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 9/15:30 pm
TYS
- SEA
2 stops9h 05m
Southwest
Thu 9/105:15 am
SEA
- TYS
2 stops11h 40m
Southwest
Deal found 6/10![Southwest logo]()
$315
This Kiwi.com deal was found by Cheapflights users on 6/11. 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.
Fri 8/142:47 pm
TYS
- SEA
1 stop23h 21m
Multiple Airlines
Sat 8/227:41 pm
SEA
- TYS
1 stop15h 08m
Multiple Airlines
Deal found 6/11![Multiple Airlines logo]()
$319
This United Airlines deal was found by Cheapflights users on 6/11. 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.
Sun 9/67:00 am
TYS
- SEA
1 stop7h 32m
United Airlines
Tue 9/1511:00 pm
SEA
- TYS
1 stop7h 57m
United Airlines
Deal found 6/11![United Airlines logo]()
$330
This Kiwi.com deal was found by Cheapflights users on 6/13. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/2412:54 pm
TYS
- SEA
1 stop24h 41m
Multiple Airlines
Wed 9/27:41 pm
SEA
- TYS
1 stop15h 03m
Multiple Airlines
Deal found 6/13![Multiple Airlines logo]()
$331
This American Airlines deal was found by Cheapflights users on 6/11. 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.
Thu 8/278:05 pm
TYS
- SEA
1 stop7h 45m
American Airlines
Sat 9/510:15 am
SEA
- TYS
1 stop10h 03m
American Airlines
Deal found 6/11![American Airlines logo]()
$340
This Kiwi.com deal was found by Cheapflights users on 6/12. 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 10/199:59 pm
TYS
- SEA
1 stop15h 01m
Multiple Airlines
Wed 10/287:41 pm
SEA
- TYS
1 stop14h 30m
Multiple Airlines
Deal found 6/12![Multiple Airlines logo]()
$343
This Southwest deal was found by Cheapflights users on 6/10. 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.
Wed 9/95:30 pm
TYS
- SEA
2 stops9h 05m
Southwest
Fri 9/1811:00 pm
SEA
- TYS
1 stop9h 55m
Southwest
Deal found 6/10![Southwest logo]()
$345
This Kiwi.com deal was found by Cheapflights users on 6/13. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/97:00 am
TYS
- SEA
1 stop29h 04m
Multiple Airlines
Thu 8/208:13 pm
SEA
- TYS
1 stop22h 33m
Multiple Airlines
Deal found 6/13![Multiple Airlines logo]()
$355
Best flights from Knoxville to SeattleDiscover carefully curated flight deals from Knoxville to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 15, 2026.
Discover carefully curated flight deals from Knoxville to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 15, 2026.
This Delta deal was found by Cheapflights users on 6/13. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/1411:30 am
TYS
- SEA
1 stop10h 08m
Delta
Mon 11/21:45 pm
SEA
- TYS
1 stop6h 17m
Delta
Deal found 6/13![Delta logo]()
$376
This United Airlines deal was found by Cheapflights users on 6/11. 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 8/297:00 am
TYS
- SEA
2 stops11h 29m
United Airlines
Tue 9/84:45 pm
SEA
- TYS
2 stops14h 12m
United Airlines
Deal found 6/11![United Airlines logo]()
$407
This Southwest deal was found by Cheapflights users on 6/10. 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 9/114:50 pm
TYS
- SEA
1 stop9h 05m
Southwest
Sat 9/1911:00 pm
SEA
- TYS
1 stop10h 25m
Southwest
Deal found 6/10![Southwest logo]()
$410
This Delta deal was found by Cheapflights users on 6/13. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/235:18 pm
TYS
- SEA
1 stop7h 44m
Delta
Sun 9/2711:59 pm
SEA
- TYS
1 stop8h 06m
Delta
Deal found 6/13![Delta logo]()
$427
This Southwest deal was found by Cheapflights users on 6/10. 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 9/114:50 pm
TYS
- SEA
1 stop6h 55m
Southwest
Fri 9/1111:00 pm
SEA
- TYS
1 stop9h 55m
Southwest
Deal found 6/10![Southwest logo]()
$436
This Southwest deal was found by Cheapflights users on 6/14. 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 9/85:30 pm
TYS
- SEA
2 stops9h 05m
Southwest
Sun 9/135:20 am
SEA
- TYS
1 stop8h 55m
Southwest
Deal found 6/14![Southwest logo]()
$442
This United Airlines deal was found by Cheapflights users on 6/11. 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 8/316:02 pm
TYS
- SEA
1 stop7h 41m
United Airlines
Wed 9/26:15 pm
SEA
- TYS
2 stops13h 22m
United Airlines
Deal found 6/11![United Airlines logo]()
$512
This United Airlines deal was found by Cheapflights users on 6/12. 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.
Wed 10/1410:42 am
TYS
- SEA
2 stops12h 55m
United Airlines
Mon 11/210:40 pm
SEA
- TYS
1 stop8h 19m
United Airlines
Deal found 6/12![United Airlines logo]()
$512
This Southwest deal was found by Cheapflights users on 6/13. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/74:50 pm
TYS
- SEA
1 stop6h 55m
Southwest
Sun 8/96:50 pm
SEA
- TYS
2 stops15h 35m
Southwest
Deal found 6/13![Southwest logo]()
$508
This United Airlines deal was found by Cheapflights users on 6/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/275:39 pm
TYS
- SEA
1 stop9h 35m
United Airlines
Wed 10/285:07 am
SEA
- TYS
1 stop6h 29m
United Airlines
Deal found 6/14![United Airlines logo]()
$516
This Southwest deal was found by Cheapflights users on 6/10. 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.
Wed 7/86:55 pm
TYS
- SEA
2 stops8h 30m
Southwest
Wed 7/156:30 am
SEA
- TYS
2 stops10h 55m
Southwest
Deal found 6/10![Southwest logo]()
$512
Last-minute flights from Knoxville to SeattleDiscover last-minute flight deals from Knoxville to Seattle. Data last updated June 15, 2026 and is based on user searches.
Discover last-minute flight deals from Knoxville to Seattle. Data last updated June 15, 2026 and is based on user searches.
This CheapOair deal was found by Cheapflights users on 6/11. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/248:32 pm
TYS
- SEA
1 stop16h 16m
Frontier
Sun 6/287:41 pm
SEA
- TYS
1 stop20h 56m
Frontier
Deal found 6/11![Frontier logo]()
$470
This Delta deal was found by Cheapflights users on 6/11. 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.
Fri 7/36:42 pm
TYS
- SEA
1 stop8h 17m
Delta
Mon 7/611:59 pm
SEA
- TYS
1 stop6h 37m
Delta
Deal found 6/11![Delta logo]()
$458
This American Airlines deal was found by Cheapflights users on 6/12. 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.
Tue 7/76:32 pm
TYS
- SEA
1 stop9h 20m
American Airlines
Tue 7/1410:47 am
SEA
- TYS
1 stop10h 04m
American Airlines
Deal found 6/12![American Airlines logo]()
$483
This CheapOair deal was found by Cheapflights users on 6/11. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/88:19 pm
TYS
- SEA
1 stop15h 58m
Frontier
Tue 7/217:06 pm
SEA
- TYS
1 stop21h 18m
Frontier
Deal found 6/11![Frontier logo]()
$400
This American Airlines deal was found by Cheapflights users on 6/13. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/98:11 pm
TYS
- SEA
1 stop7h 46m
American Airlines
Mon 7/2012:44 am
SEA
- TYS
1 stop7h 29m
American Airlines
Deal found 6/13![American Airlines logo]()
$459
This American Airlines deal was found by Cheapflights users on 6/14. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/148:11 pm
TYS
- SEA
1 stop7h 46m
American Airlines
Tue 7/215:05 am
SEA
- TYS
1 stop8h 36m
American Airlines
Deal found 6/14![American Airlines logo]()
$434
This American Airlines deal was found by Cheapflights users on 6/13. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/148:11 pm
TYS
- SEA
1 stop7h 46m
American Airlines
Mon 7/2011:22 pm
SEA
- TYS
1 stop8h 51m
American Airlines
Deal found 6/13![American Airlines logo]()
$480
This Kiwi.com deal was found by Cheapflights users on 6/10. 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 7/158:19 pm
TYS
- SEA
1 stop15h 58m
Multiple Airlines
Wed 7/227:06 pm
SEA
- TYS
1 stop15h 45m
Multiple Airlines
Deal found 6/10![Multiple Airlines logo]()
$448
This Kiwi.com deal was found by Cheapflights users on 6/11. 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 7/267:00 am
TYS
- SEA
1 stop29h 17m
Multiple Airlines
Sat 8/17:06 pm
SEA
- TYS
2 stops24h 57m
Multiple Airlines
Deal found 6/11![Multiple Airlines logo]()
$479
This American Airlines deal was found by Cheapflights users on 6/13. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/305:31 pm
TYS
- SEA
1 stop7h 55m
American Airlines
Tue 8/49:35 pm
SEA
- TYS
1 stop9h 08m
American Airlines
Deal found 6/13![American Airlines logo]()
$406
This Southwest deal was found by Cheapflights users on 6/13. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/304:20 pm
TYS
- SEA
1 stop9h 50m
Southwest
Tue 8/411:05 pm
SEA
- TYS
2 stops10h 00m
Southwest
Deal found 6/13![Southwest logo]()
$452
This Southwest deal was found by Cheapflights users on 6/12. 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 7/304:20 pm
TYS
- SEA
1 stop9h 50m
Southwest
Mon 8/310:45 pm
SEA
- TYS
1 stop10h 20m
Southwest
Deal found 6/12![Southwest logo]()
$482
One-way flights from Knoxville to SeattleSearch for one-way flight options from Knoxville to Seattle. Find affordable one-way fares based on user searches. Data last updated June 15, 2026.
Search for one-way flight options from Knoxville to Seattle. Find affordable one-way fares based on user searches. Data last updated June 15, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/10. 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 8/108:19 pm
TYS
- SEA
1 stop15h 45m
Frontier
Deal found 6/10![Frontier logo]()
$151
This CheapOair deal was found by Cheapflights users on 6/13. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/138:19 pm
TYS
- SEA
1 stop15h 58m
Frontier
Deal found 6/13![Frontier logo]()
$160
This Kiwi.com deal was found by Cheapflights users on 6/12. 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.
Thu 8/207:00 am
TYS
- SEA
1 stop29h 48m
Multiple Airlines
Deal found 6/12![Multiple Airlines logo]()
$165
This United Airlines deal was found by Cheapflights users on 6/12. 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.
Wed 8/199:00 am
TYS
- SEA
1 stop9h 52m
United Airlines
Deal found 6/12![United Airlines logo]()
$178
This Kiwi.com deal was found by Cheapflights users on 6/12. 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.
Fri 8/218:30 am
TYS
- SEA
2 stops28h 18m
Multiple Airlines
Deal found 6/12![Multiple Airlines logo]()
$180
This Kiwi.com deal was found by Cheapflights users on 6/10. 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 8/106:30 am
TYS
- SEA
2 stops29h 34m
Multiple Airlines
Deal found 6/10![Multiple Airlines logo]()
$183
This Kiwi.com deal was found by Cheapflights users on 6/14. 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.
Mon 7/1312:53 pm
TYS
- SEA
2 stops48h 46m
Multiple Airlines
Deal found 6/14![Multiple Airlines logo]()
$184
This Booking.com deal was found by Cheapflights users on 6/10. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/88:19 pm
TYS
- SEA
1 stop15h 58m
Frontier
Deal found 6/10![Frontier logo]()
$187
This Southwest deal was found by Cheapflights users on 6/10. 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 9/114:50 pm
TYS
- SEA
1 stop9h 05m
Southwest
Deal found 6/10![Southwest logo]()
$195
This Delta deal was found by Cheapflights users on 6/12. 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 8/175:40 am
TYS
- SEA
1 stop7h 09m
Delta
Deal found 6/12![Delta logo]()
$199
This Southwest deal was found by Cheapflights users on 6/12. 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.
Wed 8/193:00 pm
TYS
- SEA
1 stop11h 05m
Southwest
Deal found 6/12![Southwest logo]()
$204
Find flight deals from Knoxville to Seattle
Discover tips and strategies to find the most affordable flight options for your journey from Knoxville (TYS) 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 June 15, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $287 (Delta) |
One-way from | $151 (Kiwi.com) |
Popular in | December |
Cheapest in | November |
Average price | $598 |
Cheapflights Fare Finder
Customize your flight search to find flights from Knoxville 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 2,558,603 searches. Data last updated June 15, 2026.
Use the filters below to find and compare flights from Knoxville to Seattle that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
KnoxvilleSeattle
TYS - SEA
TYSSEA
Knoxville McGhee Tyson
Wed 10/14
11:30 am-6:38 pm
1 stop10h 08m
Seattle/Tacoma Intl
Mon 11/2
1:45 pm-11:02 pm
1 stop6h 17m
$376
KnoxvilleSeattle
TYS - SEA
TYSSEA
Knoxville McGhee Tyson
Sat 8/29
7:00 am-3:29 pm
2 stops11h 29m
Seattle/Tacoma Intl
Tue 9/8
4:45 pm-9:57 am
2 stops14h 12m
$407
KnoxvilleSeattle
TYS - SEA
TYSSEA
Knoxville McGhee Tyson
Fri 9/11
4:50 pm-10:55 pm
1 stop9h 05m
Seattle/Tacoma Intl
Sat 9/19
11:00 pm-12:25 pm
1 stop10h 25m
$410
Quickest round-trip
KnoxvilleSeattle
TYS - SEA
TYSSEA
Knoxville McGhee Tyson
Wed 9/23
5:18 pm-10:02 pm
1 stop7h 44m
Seattle/Tacoma Intl
Sun 9/27
11:59 pm-11:05 am
1 stop8h 06m
$427
KnoxvilleSeattle
TYS - SEA
TYSSEA
Knoxville McGhee Tyson
Fri 9/11
4:50 pm-8:45 pm
1 stop6h 55m
Seattle/Tacoma Intl
Fri 9/11
11:00 pm-11:55 am
1 stop9h 55m
$436
KnoxvilleSeattle
TYS - SEA
TYSSEA
Knoxville McGhee Tyson
Tue 9/8
5:30 pm-11:35 pm
2 stops9h 05m
Seattle/Tacoma Intl
Sun 9/13
5:20 am-5:15 pm
1 stop8h 55m
$442
KnoxvilleSeattle
TYS - SEA
TYSSEA
Knoxville McGhee Tyson
Fri 8/7
4:50 pm-8:45 pm
1 stop6h 55m
Seattle/Tacoma Intl
Sun 8/9
6:50 pm-1:25 pm
2 stops15h 35m
$508
KnoxvilleSeattle
TYS - SEA
TYSSEA
Knoxville McGhee Tyson
Mon 8/31
6:02 pm-10:43 pm
1 stop7h 41m
Seattle/Tacoma Intl
Wed 9/2
6:15 pm-10:37 am
2 stops13h 22m
$512
KnoxvilleSeattle
TYS - SEA
TYSSEA
Knoxville McGhee Tyson
Wed 10/14
10:42 am-8:37 pm
2 stops12h 55m
Seattle/Tacoma Intl
Mon 11/2
10:40 pm-9:59 am
1 stop8h 19m
$512
KnoxvilleSeattle
TYS - SEA
TYSSEA
Knoxville McGhee Tyson
Wed 7/8
6:55 pm-12:25 am
2 stops8h 30m
Seattle/Tacoma Intl
Wed 7/15
6:30 am-8:25 pm
2 stops10h 55m
$512
Showing 1-10 of 22 resultsSorted by cheapest first
Compare providers for flights from Knoxville 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 Knoxville to Seattle in June.
| 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 Knoxville-Seattle flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Knoxville-Seattle flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Knoxville-Seattle flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Knoxville-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 Knoxville-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 Knoxville to Seattle
Have a flexible travel schedule? Discover the best time to fly to Seattle from Knoxville with our price prediction graph.
TYS-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 Knoxville to Seattle
How far ahead should I book a flight from Knoxville to Seattle?
The best time to book flights from Knoxville to Seattle is 28 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
What is the cheapest month to book a flight from Knoxville to Seattle?
Currently, November is the cheapest month in which you can book a flight from Knoxville to Seattle (average of $442). Flying from Knoxville to Seattle in December is currently the most expensive (average of $778). 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.
How much does it cost to fly round-trip from Knoxville to Seattle?
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 June 15, 2026.
Peruse reviews from past customers who have flown with Alaska Airlines,Delta, andUnited Airlines from Knoxville 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
Crew
8.5
Food
7.0
Overall
7.9
Entertainment
7.0
Comfort
7.8
Reviews
1 / 20
8.0
ExcellentAnonymous,Jun 2026
RDU - SEA
Boarding
8.1
Crew
8.5
Food
7.0
Overall
7.9
Entertainment
7.0
Comfort
7.8
Reviews
1 / 20
8.0
ExcellentAnonymous,Jun 2026
RDU - SEA
Boarding
8.1
Crew
8.5
Food
7.0
Overall
7.9
Entertainment
7.0
Comfort
7.8
Reviews
1 / 20
8.0
ExcellentAnonymous,Jun 2026
RDU - SEA
Boarding
8.1
Crew
8.5
Food
7.0
Overall
7.9
Entertainment
7.0
Comfort
7.8
Reviews
1 / 20
8.0
ExcellentAnonymous,Jun 2026
RDU - SEA
Boarding
8.1
Crew
8.5
Food
7.0
Overall
7.9
Entertainment
7.0
Comfort
7.8
Reviews
1 / 20
8.0
ExcellentAnonymous,Jun 2026
RDU - SEA
Boarding
8.1
Crew
8.5
Food
7.0
Overall
7.9
Entertainment
7.0
Comfort
7.8
Reviews
1 / 20
8.0
ExcellentAnonymous,Jun 2026
RDU - SEA
Related info for your journey
Find useful and relevant information for your journey from Knoxville 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
Tacoma
Lacey
Ocean Shores
Leavenworth
Olympia
Edmonds
Snoqualmie
Tumwater
Tukwila
Puyallup
Kent
Lynnwood
Renton
Ellensburg
Fife
Lakewood
Issaquah
Marysville
Shoreline
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Knoxville and Seattle flights
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Other flights from Knoxville
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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 June 15, 2026.
Top 5 airlines flying from Knoxville to Seattle
Discover the top 5 airlines that operate flights from Knoxville 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 2,558,603 searches. Data last updated June 15, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$179 | Average$278 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$308 | Average$535 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$308 | Average$542 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$371 | Average$529 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$603 | Average$847 | FlexibilityNo cancel fee | On-time75% |