$91+ 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 8/9. Fares are subject to change and may not be available on all flights or dates of travel.
TYS — SEA
Aug 12 — Aug 191
Round-trip
1 adult, Economy
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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
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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 July 13, 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 July 13, 2026.
This Delta deal was found by Cheapflights users on 7/8. 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 8/511:38 am
TYS
- SEA
1 stop10h 07m
Delta
Wed 8/129:53 am
SEA
- TYS
1 stop8h 41m
Delta
Deal found 7/8![Delta logo]()
$261
This American Airlines deal was found by Cheapflights users on 7/8. 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 7/8![American Airlines logo]()
$331
This Kiwi.com deal was found by Cheapflights users on 7/8. 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 8/58:19 pm
TYS
- SEA
1 stop15h 45m
Multiple Airlines
Wed 8/128:13 pm
SEA
- TYS
2 stops47h 31m
Multiple Airlines
Deal found 7/8![Multiple Airlines logo]()
$338
This United Airlines deal was found by Cheapflights users on 7/8. 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 8/193:40 pm
TYS
- SEA
1 stop8h 56m
United Airlines
Sun 8/2311:00 pm
SEA
- TYS
1 stop7h 57m
United Airlines
Deal found 7/8![United Airlines logo]()
$359
This Southwest deal was found by Cheapflights users on 7/8. 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
2 stops11h 25m
Southwest
Sun 8/2311:05 pm
SEA
- TYS
2 stops9h 55m
Southwest
Deal found 7/8![Southwest logo]()
$369
This United Airlines deal was found by Cheapflights users on 7/8. 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.
Thu 8/274:50 pm
TYS
- SEA
1 stop9h 14m
United Airlines
Sat 9/55:20 pm
SEA
- TYS
2 stops13h 37m
United Airlines
Deal found 7/8![United Airlines logo]()
$376
This United Airlines deal was found by Cheapflights users on 7/8. 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 8/156:02 pm
TYS
- SEA
1 stop7h 41m
United Airlines
Sat 8/225:00 am
SEA
- TYS
1 stop7h 46m
United Airlines
Deal found 7/8![United Airlines logo]()
$389
This Kiwi.com deal was found by Cheapflights users on 7/11. 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 8/2812:54 pm
TYS
- SEA
1 stop24h 45m
Multiple Airlines
Sat 9/57:06 pm
SEA
- TYS
1 stop15h 38m
Multiple Airlines
Deal found 7/11![Multiple Airlines logo]()
$390
This Kiwi.com deal was found by Cheapflights users on 7/12. 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 9/257:00 am
TYS
- SEA
1 stop30h 00m
Multiple Airlines
Thu 10/19:16 pm
SEA
- TYS
1 stop20h 58m
Multiple Airlines
Deal found 7/12![Multiple Airlines logo]()
$392
This Kiwi.com deal was found by Cheapflights users on 7/9. 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 7/2410:05 pm
TYS
- SEA
2 stops38h 12m
Multiple Airlines
Wed 8/267:06 pm
SEA
- TYS
1 stop15h 43m
Multiple Airlines
Deal found 7/9![Multiple Airlines logo]()
$393
This United Airlines deal was found by Cheapflights users on 7/9. 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.
Fri 8/283:40 pm
TYS
- SEA
1 stop8h 56m
United Airlines
Sun 8/305:00 am
SEA
- TYS
1 stop7h 54m
United Airlines
Deal found 7/9![United Airlines logo]()
$394
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 July 13, 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 July 13, 2026.
This Southwest deal was found by Cheapflights users on 7/12. 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.
Sat 8/151:55 pm
TYS
- SEA
1 stop7h 20m
Southwest
Wed 8/196:40 am
SEA
- TYS
1 stop6h 50m
Southwest
Deal found 7/12![Southwest logo]()
$406
This United Airlines deal was found by Cheapflights users on 7/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/176:02 pm
TYS
- SEA
1 stop7h 41m
United Airlines
Fri 8/2111:59 pm
SEA
- TYS
1 stop8h 53m
United Airlines
Deal found 7/10![United Airlines logo]()
$414
This Delta deal was found by Cheapflights users on 7/9. 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 7/203:54 pm
TYS
- SEA
1 stop7h 17m
Delta
Wed 8/265:30 am
SEA
- TYS
1 stop9h 12m
Delta
Deal found 7/9![Delta logo]()
$496
This Southwest deal was found by Cheapflights users on 7/12. 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.
Sat 8/221:55 pm
TYS
- SEA
2 stops12h 00m
Southwest
Sat 8/296:50 am
SEA
- TYS
2 stops7h 50m
Southwest
Deal found 7/12![Southwest logo]()
$408
This Southwest deal was found by Cheapflights users on 7/11. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/193:00 pm
TYS
- SEA
2 stops11h 25m
Southwest
Sun 8/305:20 am
SEA
- TYS
1 stop8h 55m
Southwest
Deal found 7/11![Southwest logo]()
$411
This United Airlines deal was found by Cheapflights users on 7/8. 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.
Thu 8/271:00 pm
TYS
- SEA
2 stops12h 43m
United Airlines
Sat 9/511:00 pm
SEA
- TYS
2 stops12h 37m
United Airlines
Deal found 7/8![United Airlines logo]()
$471
This Southwest deal was found by Cheapflights users on 7/11. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/284:50 pm
TYS
- SEA
2 stops10h 30m
Southwest
Sat 9/511:05 pm
SEA
- TYS
2 stops11h 45m
Southwest
Deal found 7/11![Southwest logo]()
$417
This Southwest deal was found by Cheapflights users on 7/12. 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.
Sun 8/307:35 am
TYS
- SEA
1 stop12h 05m
Southwest
Mon 8/3111:05 pm
SEA
- TYS
2 stops10h 00m
Southwest
Deal found 7/12![Southwest logo]()
$417
This United Airlines deal was found by Cheapflights users on 7/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/95:45 am
TYS
- SEA
1 stop9h 06m
United Airlines
Fri 8/1411:00 pm
SEA
- TYS
1 stop7h 57m
United Airlines
Deal found 7/10![United Airlines logo]()
$515
This Southwest deal was found by Cheapflights users on 7/10. 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 8/74:50 pm
TYS
- SEA
2 stops10h 30m
Southwest
Fri 8/147:25 pm
SEA
- TYS
2 stops13h 30m
Southwest
Deal found 7/10![Southwest logo]()
$462
This Southwest deal was found by Cheapflights users on 7/8. 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 8/51:55 pm
TYS
- SEA
2 stops12h 10m
Southwest
Wed 8/126:25 am
SEA
- TYS
2 stops9h 30m
Southwest
Deal found 7/8![Southwest logo]()
$469
This Southwest deal was found by Cheapflights users on 7/12. 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.
Sun 8/237:35 am
TYS
- SEA
2 stops14h 05m
Southwest
Sat 8/296:50 am
SEA
- TYS
2 stops7h 50m
Southwest
Deal found 7/12![Southwest logo]()
$516
Last-minute flights from Knoxville to SeattleDiscover last-minute flight deals from Knoxville to Seattle. Data last updated July 13, 2026 and is based on user searches.
Discover last-minute flight deals from Knoxville to Seattle. Data last updated July 13, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 7/9. 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 7/2410:05 pm
TYS
- SEA
2 stops38h 12m
Multiple Airlines
Wed 8/267:06 pm
SEA
- TYS
1 stop15h 43m
Multiple Airlines
Deal found 7/9![Multiple Airlines logo]()
$393
This Kiwi.com deal was found by Cheapflights users on 7/10. 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.
Fri 7/312:47 pm
TYS
- SEA
1 stop22h 52m
Multiple Airlines
Tue 8/118:13 pm
SEA
- TYS
2 stops20h 11m
Multiple Airlines
Deal found 7/10![Multiple Airlines logo]()
$397
This Delta deal was found by Cheapflights users on 7/8. 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 8/511:38 am
TYS
- SEA
1 stop10h 07m
Delta
Wed 8/129:53 am
SEA
- TYS
1 stop8h 41m
Delta
Deal found 7/8![Delta logo]()
$261
This Kiwi.com deal was found by Cheapflights users on 7/8. 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 8/58:19 pm
TYS
- SEA
1 stop15h 45m
Multiple Airlines
Wed 8/128:13 pm
SEA
- TYS
2 stops47h 31m
Multiple Airlines
Deal found 7/8![Multiple Airlines logo]()
$338
This United Airlines deal was found by Cheapflights users on 7/8. 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 8/156:02 pm
TYS
- SEA
1 stop7h 41m
United Airlines
Sat 8/225:00 am
SEA
- TYS
1 stop7h 46m
United Airlines
Deal found 7/8![United Airlines logo]()
$389
This United Airlines deal was found by Cheapflights users on 7/8. 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 8/193:40 pm
TYS
- SEA
1 stop8h 56m
United Airlines
Sun 8/2311:00 pm
SEA
- TYS
1 stop7h 57m
United Airlines
Deal found 7/8![United Airlines logo]()
$359
This Southwest deal was found by Cheapflights users on 7/8. 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
2 stops11h 25m
Southwest
Sun 8/2311:05 pm
SEA
- TYS
2 stops9h 55m
Southwest
Deal found 7/8![Southwest logo]()
$369
This American Airlines deal was found by Cheapflights users on 7/8. 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 7/8![American Airlines logo]()
$331
This United Airlines deal was found by Cheapflights users on 7/8. 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.
Thu 8/274:50 pm
TYS
- SEA
1 stop9h 14m
United Airlines
Sat 9/55:20 pm
SEA
- TYS
2 stops13h 37m
United Airlines
Deal found 7/8![United Airlines logo]()
$376
This Kiwi.com deal was found by Cheapflights users on 7/11. 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 8/2812:54 pm
TYS
- SEA
1 stop24h 45m
Multiple Airlines
Sat 9/57:06 pm
SEA
- TYS
1 stop15h 38m
Multiple Airlines
Deal found 7/11![Multiple Airlines logo]()
$390
This United Airlines deal was found by Cheapflights users on 7/9. 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.
Fri 8/283:40 pm
TYS
- SEA
1 stop8h 56m
United Airlines
Sun 8/305:00 am
SEA
- TYS
1 stop7h 54m
United Airlines
Deal found 7/9![United Airlines logo]()
$394
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 July 13, 2026.
Search for one-way flight options from Knoxville to Seattle. Find affordable one-way fares based on user searches. Data last updated July 13, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/10. 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.
Sun 8/97:00 am
TYS
- SEA
1 stop29h 04m
Multiple Airlines
Deal found 7/10![Multiple Airlines logo]()
$91
This Kiwi.com deal was found by Cheapflights users on 7/8. 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 8/36:30 am
TYS
- SEA
2 stops53h 34m
Multiple Airlines
Deal found 7/8![Multiple Airlines logo]()
$108
This Kiwi.com deal was found by Cheapflights users on 7/12. 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.
Sun 9/277:00 am
TYS
- SEA
2 stops54h 00m
Multiple Airlines
Deal found 7/12![Multiple Airlines logo]()
$123
This Delta deal was found by Cheapflights users on 7/8. 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.
Tue 8/46:12 pm
TYS
- SEA
1 stop8h 45m
Delta
Deal found 7/8![Delta logo]()
$131
This Kiwi.com deal was found by Cheapflights users on 7/12. 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 8/277:00 am
TYS
- SEA
2 stops30h 39m
Multiple Airlines
Deal found 7/12![Multiple Airlines logo]()
$159
This CheapOair deal was found by Cheapflights users on 7/8. 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.
Fri 8/78:19 pm
TYS
- SEA
1 stop15h 45m
Frontier
Deal found 7/8![Frontier logo]()
$160
This Kiwi.com deal was found by Cheapflights users on 7/8. 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 8/67:00 am
TYS
- SEA
2 stops31h 04m
Multiple Airlines
Deal found 7/8![Multiple Airlines logo]()
$170
This Delta deal was found by Cheapflights users on 7/12. 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.
Thu 8/277:41 pm
TYS
- SEA
1 stop7h 16m
Delta
Deal found 7/12![Delta logo]()
$178
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 July 13, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $261 (Delta) |
One-way from | $91 (Kiwi.com) |
Popular in | December |
Cheapest in | November |
Average price | $592 |
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 July 13, 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
Quickest round-trip
KnoxvilleSeattle
TYS - SEA
TYSSEA
Knoxville McGhee Tyson
Sat 8/15
1:55 pm-6:15 pm
1 stop7h 20m
Seattle/Tacoma Intl
Wed 8/19
6:40 am-4:30 pm
1 stop6h 50m
$406
KnoxvilleSeattle
TYS - SEA
TYSSEA
Knoxville McGhee Tyson
Sat 8/22
1:55 pm-10:55 pm
2 stops12h 00m
Seattle/Tacoma Intl
Sat 8/29
6:50 am-5:40 pm
2 stops7h 50m
$408
KnoxvilleSeattle
TYS - SEA
TYSSEA
Knoxville McGhee Tyson
Wed 8/19
3:00 pm-11:25 pm
2 stops11h 25m
Seattle/Tacoma Intl
Sun 8/30
5:20 am-5:15 pm
1 stop8h 55m
$411
KnoxvilleSeattle
TYS - SEA
TYSSEA
Knoxville McGhee Tyson
Mon 8/17
6:02 pm-10:43 pm
1 stop7h 41m
Seattle/Tacoma Intl
Fri 8/21
11:59 pm-11:52 am
1 stop8h 53m
$414
KnoxvilleSeattle
TYS - SEA
TYSSEA
Knoxville McGhee Tyson
Fri 8/28
4:50 pm-12:20 am
2 stops10h 30m
Seattle/Tacoma Intl
Sat 9/5
11:05 pm-1:50 pm
2 stops11h 45m
$417
KnoxvilleSeattle
TYS - SEA
TYSSEA
Knoxville McGhee Tyson
Sun 8/30
7:35 am-4:40 pm
1 stop12h 05m
Seattle/Tacoma Intl
Mon 8/31
11:05 pm-12:05 pm
2 stops10h 00m
$417
KnoxvilleSeattle
TYS - SEA
TYSSEA
Knoxville McGhee Tyson
Fri 8/7
4:50 pm-12:20 am
2 stops10h 30m
Seattle/Tacoma Intl
Fri 8/14
7:25 pm-11:55 am
2 stops13h 30m
$462
KnoxvilleSeattle
TYS - SEA
TYSSEA
Knoxville McGhee Tyson
Wed 8/5
1:55 pm-11:05 pm
2 stops12h 10m
Seattle/Tacoma Intl
Wed 8/12
6:25 am-6:55 pm
2 stops9h 30m
$469
KnoxvilleSeattle
TYS - SEA
TYSSEA
Knoxville McGhee Tyson
Thu 8/27
1:00 pm-10:43 pm
2 stops12h 43m
Seattle/Tacoma Intl
Sat 9/5
11:00 pm-2:37 pm
2 stops12h 37m
$471
KnoxvilleSeattle
TYS - SEA
TYSSEA
Knoxville McGhee Tyson
Mon 7/20
3:54 pm-8:11 pm
1 stop7h 17m
Seattle/Tacoma Intl
Wed 8/26
5:30 am-5:42 pm
1 stop9h 12m
$496
Showing 1-10 of 24 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 July.
| 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 31 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 $781). 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 July 13, 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.
Food
7.1
Crew
8.5
Overall
7.9
Comfort
7.8
Boarding
8.1
Entertainment
7.0
Reviews
1 / 20
8.0
ExcellentAnonymous,Jun 2026
RDU - SEA
Food
7.1
Crew
8.5
Overall
7.9
Comfort
7.8
Boarding
8.1
Entertainment
7.0
Reviews
1 / 20
8.0
ExcellentAnonymous,Jun 2026
RDU - SEA
Food
7.1
Crew
8.5
Overall
7.9
Comfort
7.8
Boarding
8.1
Entertainment
7.0
Reviews
1 / 20
8.0
ExcellentAnonymous,Jun 2026
RDU - SEA
Food
7.1
Crew
8.5
Overall
7.9
Comfort
7.8
Boarding
8.1
Entertainment
7.0
Reviews
1 / 20
8.0
ExcellentAnonymous,Jun 2026
RDU - SEA
Food
7.1
Crew
8.5
Overall
7.9
Comfort
7.8
Boarding
8.1
Entertainment
7.0
Reviews
1 / 20
8.0
ExcellentAnonymous,Jun 2026
RDU - SEA
Food
7.1
Crew
8.5
Overall
7.9
Comfort
7.8
Boarding
8.1
Entertainment
7.0
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
Leavenworth
Olympia
Ocean Shores
Edmonds
Snoqualmie
Tumwater
Tukwila
Renton
Kent
Lynnwood
Puyallup
Ellensburg
Fife
Marysville
Lakewood
Issaquah
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
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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 July 13, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$179 | Average$278 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$318 | Average$549 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$357 | Average$548 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$372 | Average$543 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$603 | Average$847 | FlexibilityNo cancel fee | On-time75% |