$159+ 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 9/27. Fares are subject to change and may not be available on all flights or dates of travel.
TYS — SEA
Aug 1 — Aug 81
Round-trip
1 adult, Economy
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Find cheap flights from Knoxville to Seattle with Cheapflights
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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 2, 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 2, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/30. 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 10/1610:03 pm
TYS
- SEA
1 stop14h 57m
Multiple Airlines
Sat 11/147:41 pm
SEA
- TYS
1 stop14h 38m
Multiple Airlines
Deal found 6/30![Multiple Airlines logo]()
$264
This CheapOair deal was found by Cheapflights users on 6/27. 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 8/38:19 pm
TYS
- SEA
1 stop15h 58m
Frontier
Tue 8/117:06 pm
SEA
- TYS
1 stop21h 18m
Frontier
Deal found 6/27![Frontier logo]()
$290
This Kiwi.com deal was found by Cheapflights users on 6/30. 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 stops33h 47m
Multiple Airlines
Wed 8/197:06 pm
SEA
- TYS
1 stop15h 43m
Multiple Airlines
Deal found 6/30![Multiple Airlines logo]()
$298
This Kiwi.com deal was found by Cheapflights users on 6/30. 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 11/126:30 am
TYS
- SEA
1 stop30h 21m
Multiple Airlines
Wed 11/187:41 pm
SEA
- TYS
1 stop16h 11m
Multiple Airlines
Deal found 6/30![Multiple Airlines logo]()
$306
This Kiwi.com deal was found by Cheapflights users on 7/2. 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 stops31h 50m
Multiple Airlines
Tue 8/117:06 pm
SEA
- TYS
1 stop21h 18m
Multiple Airlines
Deal found 7/2![Multiple Airlines logo]()
$307
This CheapOair deal was found by Cheapflights users on 6/29. 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 8/108:19 pm
TYS
- SEA
1 stop15h 45m
Frontier
Thu 8/137:06 pm
SEA
- TYS
1 stop21h 18m
Frontier
Deal found 6/29![Frontier logo]()
$308
This Kiwi.com deal was found by Cheapflights users on 7/2. 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 stops31h 50m
Multiple Airlines
Thu 8/138:53 pm
SEA
- TYS
1 stop14h 04m
Multiple Airlines
Deal found 7/2![Multiple Airlines logo]()
$311
This Kiwi.com deal was found by Cheapflights users on 6/29. 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 45m
Multiple Airlines
Wed 9/27:06 pm
SEA
- TYS
1 stop15h 38m
Multiple Airlines
Deal found 6/29![Multiple Airlines logo]()
$312
This Kiwi.com deal was found by Cheapflights users on 7/2. 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 8/27:00 am
TYS
- SEA
1 stop29h 17m
Multiple Airlines
Tue 8/117:06 pm
SEA
- TYS
1 stop21h 18m
Multiple Airlines
Deal found 7/2![Multiple Airlines logo]()
$313
This CheapOair deal was found by Cheapflights users on 7/1. 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 8/58:19 pm
TYS
- SEA
1 stop15h 45m
Frontier
Tue 8/112:22 pm
SEA
- TYS
1 stop26h 02m
Frontier
Deal found 7/1![Frontier logo]()
$316
This Kiwi.com deal was found by Cheapflights users on 7/2. 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 8/27:00 am
TYS
- SEA
1 stop29h 17m
Multiple Airlines
Thu 8/138:53 pm
SEA
- TYS
1 stop14h 04m
Multiple Airlines
Deal found 7/2![Multiple Airlines logo]()
$318
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 2, 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 2, 2026.
This United Airlines deal was found by Cheapflights users on 6/29. 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 9/53:40 pm
TYS
- SEA
1 stop8h 56m
United Airlines
Sat 9/125:00 am
SEA
- TYS
1 stop7h 44m
United Airlines
Deal found 6/29![United Airlines logo]()
$355
This Southwest deal was found by Cheapflights users on 6/27. 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 9/191:55 pm
TYS
- SEA
2 stops12h 00m
Southwest
Mon 9/2811:05 pm
SEA
- TYS
2 stops10h 00m
Southwest
Deal found 6/27![Southwest logo]()
$369
This United Airlines deal was found by Cheapflights users on 6/27. 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 8/116:02 pm
TYS
- SEA
1 stop7h 41m
United Airlines
Mon 8/2411:00 pm
SEA
- TYS
1 stop7h 57m
United Airlines
Deal found 6/27![United Airlines logo]()
$358
This Southwest deal was found by Cheapflights users on 6/27. 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 8/111:55 pm
TYS
- SEA
2 stops12h 10m
Southwest
Mon 8/2411:00 pm
SEA
- TYS
1 stop10h 05m
Southwest
Deal found 6/27![Southwest logo]()
$369
This United Airlines deal was found by Cheapflights users on 6/30. 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 8/247:00 am
TYS
- SEA
1 stop7h 32m
United Airlines
Tue 9/15:00 am
SEA
- TYS
1 stop7h 54m
United Airlines
Deal found 6/30![United Airlines logo]()
$376
This Southwest deal was found by Cheapflights users on 6/28. 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 8/312:05 pm
TYS
- SEA
2 stops9h 40m
Southwest
Tue 9/811:05 pm
SEA
- TYS
2 stops10h 00m
Southwest
Deal found 6/28![Southwest logo]()
$387
This Southwest deal was found by Cheapflights users on 7/1. 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 9/74:50 pm
TYS
- SEA
1 stop9h 05m
Southwest
Tue 9/1511:00 pm
SEA
- TYS
1 stop10h 05m
Southwest
Deal found 7/1![Southwest logo]()
$412
This Southwest deal was found by Cheapflights users on 6/27. 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 8/144:50 pm
TYS
- SEA
2 stops10h 30m
Southwest
Tue 8/187:10 am
SEA
- TYS
2 stops8h 45m
Southwest
Deal found 6/27![Southwest logo]()
$417
This United Airlines deal was found by Cheapflights users on 7/1. 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 9/296:00 am
TYS
- SEA
1 stop8h 27m
United Airlines
Wed 9/305:00 am
SEA
- TYS
1 stop7h 52m
United Airlines
Deal found 7/1![United Airlines logo]()
$465
This United Airlines deal was found by Cheapflights users on 6/29. 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 8/272:21 pm
TYS
- SEA
1 stop10h 15m
United Airlines
Sat 9/511:00 pm
SEA
- TYS
2 stops12h 37m
United Airlines
Deal found 6/29![United Airlines logo]()
$473
This Southwest deal was found by Cheapflights users on 7/1. 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 8/215:45 pm
TYS
- SEA
2 stops9h 10m
Southwest
Fri 8/286:30 am
SEA
- TYS
1 stop6h 25m
Southwest
Deal found 7/1![Southwest logo]()
$462
Last-minute flights from Knoxville to SeattleDiscover last-minute flight deals from Knoxville to Seattle. Data last updated July 2, 2026 and is based on user searches.
Discover last-minute flight deals from Knoxville to Seattle. Data last updated July 2, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 7/2. 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 8/27:00 am
TYS
- SEA
1 stop29h 17m
Multiple Airlines
Tue 8/117:06 pm
SEA
- TYS
1 stop21h 18m
Multiple Airlines
Deal found 7/2![Multiple Airlines logo]()
$313
This Kiwi.com deal was found by Cheapflights users on 7/2. 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 8/27:00 am
TYS
- SEA
1 stop29h 17m
Multiple Airlines
Thu 8/138:53 pm
SEA
- TYS
1 stop14h 04m
Multiple Airlines
Deal found 7/2![Multiple Airlines logo]()
$318
This CheapOair deal was found by Cheapflights users on 6/27. 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 8/38:19 pm
TYS
- SEA
1 stop15h 58m
Frontier
Tue 8/117:06 pm
SEA
- TYS
1 stop21h 18m
Frontier
Deal found 6/27![Frontier logo]()
$290
This Kiwi.com deal was found by Cheapflights users on 7/2. 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 stops31h 50m
Multiple Airlines
Tue 8/117:06 pm
SEA
- TYS
1 stop21h 18m
Multiple Airlines
Deal found 7/2![Multiple Airlines logo]()
$307
This Kiwi.com deal was found by Cheapflights users on 7/2. 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 stops31h 50m
Multiple Airlines
Thu 8/138:53 pm
SEA
- TYS
1 stop14h 04m
Multiple Airlines
Deal found 7/2![Multiple Airlines logo]()
$311
This CheapOair deal was found by Cheapflights users on 7/1. 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 8/58:19 pm
TYS
- SEA
1 stop15h 45m
Frontier
Tue 8/112:22 pm
SEA
- TYS
1 stop26h 02m
Frontier
Deal found 7/1![Frontier logo]()
$316
This Kiwi.com deal was found by Cheapflights users on 6/30. 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 stops33h 47m
Multiple Airlines
Wed 8/197:06 pm
SEA
- TYS
1 stop15h 43m
Multiple Airlines
Deal found 6/30![Multiple Airlines logo]()
$298
This CheapOair deal was found by Cheapflights users on 6/29. 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 8/108:19 pm
TYS
- SEA
1 stop15h 45m
Frontier
Thu 8/137:06 pm
SEA
- TYS
1 stop21h 18m
Frontier
Deal found 6/29![Frontier logo]()
$308
This Kiwi.com deal was found by Cheapflights users on 6/29. 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 8/167:00 am
TYS
- SEA
1 stop9h 17m
Multiple Airlines
Sat 8/227:06 pm
SEA
- TYS
1 stop15h 43m
Multiple Airlines
Deal found 6/29![Multiple Airlines logo]()
$320
This Kiwi.com deal was found by Cheapflights users on 7/2. 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 8/237:00 am
TYS
- SEA
1 stop9h 22m
Multiple Airlines
Sat 8/297:06 pm
SEA
- TYS
1 stop15h 43m
Multiple Airlines
Deal found 7/2![Multiple Airlines logo]()
$326
This Kiwi.com deal was found by Cheapflights users on 6/29. 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 45m
Multiple Airlines
Wed 9/27:06 pm
SEA
- TYS
1 stop15h 38m
Multiple Airlines
Deal found 6/29![Multiple Airlines logo]()
$312
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 2, 2026.
Search for one-way flight options from Knoxville to Seattle. Find affordable one-way fares based on user searches. Data last updated July 2, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/27. 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
1 stop20h 27m
Multiple Airlines
Deal found 6/27![Multiple Airlines logo]()
$159
This Kiwi.com deal was found by Cheapflights users on 6/28. 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 8/237:00 am
TYS
- SEA
1 stop9h 22m
Multiple Airlines
Deal found 6/28![Multiple Airlines logo]()
$167
This United Airlines deal was found by Cheapflights users on 6/27. 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 7/215:45 am
TYS
- SEA
1 stop9h 06m
United Airlines
Deal found 6/27![United Airlines logo]()
$178
This Delta deal was found by Cheapflights users on 6/27. 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 11/27:25 am
TYS
- SEA
1 stop7h 52m
Delta
Deal found 6/27![Delta logo]()
$181
This CheapOair deal was found by Cheapflights users on 6/30. 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
Deal found 6/30![Frontier logo]()
$182
This Southwest deal was found by Cheapflights users on 6/27. 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 8/111:55 pm
TYS
- SEA
2 stops12h 10m
Southwest
Deal found 6/27![Southwest logo]()
$183
This CheapOair deal was found by Cheapflights users on 7/1. 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 7/318:19 pm
TYS
- SEA
1 stop18h 01m
Frontier
Deal found 7/1![Frontier logo]()
$192
This Southwest deal was found by Cheapflights users on 6/27. 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
2 stops12h 00m
Southwest
Deal found 6/27![Southwest logo]()
$204
This CheapOair deal was found by Cheapflights users on 7/1. 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 stop18h 01m
Frontier
Deal found 7/1![Frontier logo]()
$207
This Kiwi.com deal was found by Cheapflights users on 6/28. 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.
Sat 8/226:56 pm
TYS
- SEA
3 stops44h 24m
Multiple Airlines
Deal found 6/28![Multiple Airlines logo]()
$233
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 2, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $264 (Kiwi.com) |
One-way from | $159 (Kiwi.com) |
Popular in | December |
Cheapest in | November |
Average price | $603 |
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 2, 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
Sat 9/5
3:40 pm-9:36 pm
1 stop8h 56m
Seattle/Tacoma Intl
Sat 9/12
5:00 am-3:44 pm
1 stop7h 44m
$355
KnoxvilleSeattle
TYS - SEA
TYSSEA
Knoxville McGhee Tyson
Tue 8/11
6:02 pm-10:43 pm
1 stop7h 41m
Seattle/Tacoma Intl
Mon 8/24
11:00 pm-9:57 am
1 stop7h 57m
$358
KnoxvilleSeattle
TYS - SEA
TYSSEA
Knoxville McGhee Tyson
Sat 9/19
1:55 pm-10:55 pm
2 stops12h 00m
Seattle/Tacoma Intl
Mon 9/28
11:05 pm-12:05 pm
2 stops10h 00m
$369
KnoxvilleSeattle
TYS - SEA
TYSSEA
Knoxville McGhee Tyson
Tue 8/11
1:55 pm-11:05 pm
2 stops12h 10m
Seattle/Tacoma Intl
Mon 8/24
11:00 pm-12:05 pm
1 stop10h 05m
$369
Quickest round-trip
KnoxvilleSeattle
TYS - SEA
TYSSEA
Knoxville McGhee Tyson
Mon 8/24
7:00 am-11:32 am
1 stop7h 32m
Seattle/Tacoma Intl
Tue 9/1
5:00 am-3:54 pm
1 stop7h 54m
$376
KnoxvilleSeattle
TYS - SEA
TYSSEA
Knoxville McGhee Tyson
Mon 8/31
2:05 pm-8:45 pm
2 stops9h 40m
Seattle/Tacoma Intl
Tue 9/8
11:05 pm-12:05 pm
2 stops10h 00m
$387
KnoxvilleSeattle
TYS - SEA
TYSSEA
Knoxville McGhee Tyson
Mon 9/7
4:50 pm-10:55 pm
1 stop9h 05m
Seattle/Tacoma Intl
Tue 9/15
11:00 pm-12:05 pm
1 stop10h 05m
$412
KnoxvilleSeattle
TYS - SEA
TYSSEA
Knoxville McGhee Tyson
Fri 8/14
4:50 pm-12:20 am
2 stops10h 30m
Seattle/Tacoma Intl
Tue 8/18
7:10 am-6:55 pm
2 stops8h 45m
$417
KnoxvilleSeattle
TYS - SEA
TYSSEA
Knoxville McGhee Tyson
Fri 8/21
5:45 pm-11:55 pm
2 stops9h 10m
Seattle/Tacoma Intl
Fri 8/28
6:30 am-3:55 pm
1 stop6h 25m
$462
KnoxvilleSeattle
TYS - SEA
TYSSEA
Knoxville McGhee Tyson
Tue 9/29
6:00 am-11:27 am
1 stop8h 27m
Seattle/Tacoma Intl
Wed 9/30
5:00 am-3:52 pm
1 stop7h 52m
$465
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 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 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 $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 2, 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.
Overall
7.9
Food
7.1
Boarding
8.1
Crew
8.5
Entertainment
7.0
Comfort
7.8
Reviews
1 / 20
8.0
ExcellentAnonymous,Jun 2026
RDU - SEA
Overall
7.9
Food
7.1
Boarding
8.1
Crew
8.5
Entertainment
7.0
Comfort
7.8
Reviews
1 / 20
8.0
ExcellentAnonymous,Jun 2026
RDU - SEA
Overall
7.9
Food
7.1
Boarding
8.1
Crew
8.5
Entertainment
7.0
Comfort
7.8
Reviews
1 / 20
8.0
ExcellentAnonymous,Jun 2026
RDU - SEA
Overall
7.9
Food
7.1
Boarding
8.1
Crew
8.5
Entertainment
7.0
Comfort
7.8
Reviews
1 / 20
8.0
ExcellentAnonymous,Jun 2026
RDU - SEA
Overall
7.9
Food
7.1
Boarding
8.1
Crew
8.5
Entertainment
7.0
Comfort
7.8
Reviews
1 / 20
8.0
ExcellentAnonymous,Jun 2026
RDU - SEA
Overall
7.9
Food
7.1
Boarding
8.1
Crew
8.5
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
Leavenworth
Olympia
Ocean Shores
Edmonds
Snoqualmie
Tumwater
Tukwila
Renton
Kent
Lynnwood
Ellensburg
Fife
Marysville
Lakewood
Issaquah
Shoreline
Centralia
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Knoxville and Seattle flights
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Other flights from Knoxville
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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 July 2, 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 July 2, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$179 | Average$278 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$308 | Average$542 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$358 | Average$555 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$371 | Average$543 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$603 | Average$847 | FlexibilityNo cancel fee | On-time75% |