$167+ 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 6/24. Fares are subject to change and may not be available on all flights or dates of travel.
TYS — SEA
Jun 18 — Jun 251
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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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Knoxville to Seattle
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Best
Last-minute
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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 May 19, 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 May 19, 2026.
This Kiwi.com deal was found by Cheapflights users on 5/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/102:47 pm
TYS
- SEA
1 stop22h 52m
Multiple Airlines
Wed 8/197:41 pm
SEA
- TYS
1 stop15h 08m
Multiple Airlines
Deal found 5/15![Multiple Airlines logo]()
$309
This Kiwi.com deal was found by Cheapflights users on 5/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure 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 49m
Multiple Airlines
Wed 8/197:41 pm
SEA
- TYS
1 stop15h 08m
Multiple Airlines
Deal found 5/15![Multiple Airlines logo]()
$338
This Kiwi.com deal was found by Cheapflights users on 5/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/102:47 pm
TYS
- SEA
1 stop22h 52m
Multiple Airlines
Thu 8/138:12 pm
SEA
- TYS
1 stop14h 45m
Multiple Airlines
Deal found 5/15![Multiple Airlines logo]()
$339
This Kiwi.com deal was found by Cheapflights users on 5/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/137:00 am
TYS
- SEA
2 stops38h 52m
Multiple Airlines
Wed 8/197:41 pm
SEA
- TYS
1 stop15h 08m
Multiple Airlines
Deal found 5/15![Multiple Airlines logo]()
$344
This Kiwi.com deal was found by Cheapflights users on 5/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/172:47 pm
TYS
- SEA
1 stop22h 48m
Multiple Airlines
Sat 8/227:41 pm
SEA
- TYS
1 stop15h 08m
Multiple Airlines
Deal found 5/15![Multiple Airlines logo]()
$345
This Kiwi.com deal was found by Cheapflights users on 5/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/172:47 pm
TYS
- SEA
1 stop22h 48m
Multiple Airlines
Tue 8/257:41 pm
SEA
- TYS
1 stop20h 56m
Multiple Airlines
Deal found 5/15![Multiple Airlines logo]()
$353
This Kiwi.com deal was found by Cheapflights users on 5/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/248:30 am
TYS
- SEA
2 stops52h 18m
Multiple Airlines
Wed 9/27:41 pm
SEA
- TYS
1 stop15h 03m
Multiple Airlines
Deal found 5/15![Multiple Airlines logo]()
$362
This Booking.com deal was found by Cheapflights users on 5/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/58:32 pm
TYS
- SEA
1 stop16h 34m
Frontier
Tue 6/97:41 pm
SEA
- TYS
1 stop20h 56m
Frontier
Deal found 5/18![Frontier logo]()
$363
This Kiwi.com deal was found by Cheapflights users on 5/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/172:47 pm
TYS
- SEA
1 stop22h 48m
Multiple Airlines
Sun 8/238:13 pm
SEA
- TYS
1 stop22h 33m
Multiple Airlines
Deal found 5/15![Multiple Airlines logo]()
$364
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 May 19, 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 May 19, 2026.
This Delta deal was found by Cheapflights users on 5/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/16:42 pm
TYS
- SEA
1 stop8h 17m
Delta
Wed 7/1511:59 pm
SEA
- TYS
1 stop8h 06m
Delta
Deal found 5/18![Delta logo]()
$389
This Southwest deal was found by Cheapflights users on 5/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/23:00 pm
TYS
- SEA
1 stop11h 05m
Southwest
Fri 9/1111:05 pm
SEA
- TYS
2 stops15h 35m
Southwest
Deal found 5/17![Southwest logo]()
$439
This United Airlines deal was found by Cheapflights users on 5/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/197:15 am
TYS
- SEA
1 stop10h 37m
United Airlines
Tue 9/111:00 pm
SEA
- TYS
2 stops12h 37m
United Airlines
Deal found 5/17![United Airlines logo]()
$504
This Delta deal was found by Cheapflights users on 5/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/87:43 pm
TYS
- SEA
1 stop7h 16m
Delta
Wed 7/1511:59 pm
SEA
- TYS
1 stop8h 06m
Delta
Deal found 5/16![Delta logo]()
$389
This Southwest deal was found by Cheapflights users on 5/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/121:55 pm
TYS
- SEA
1 stop7h 20m
Southwest
Sun 9/2011:05 pm
SEA
- TYS
2 stops9h 50m
Southwest
Deal found 5/18![Southwest logo]()
$441
This Delta deal was found by Cheapflights users on 5/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/255:45 am
TYS
- SEA
1 stop7h 04m
Delta
Sun 8/3010:35 pm
SEA
- TYS
1 stop9h 30m
Delta
Deal found 5/15![Delta logo]()
$436
This United Airlines deal was found by Cheapflights users on 5/14. 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.
Wed 10/77:00 am
TYS
- SEA
2 stops15h 14m
United Airlines
Tue 10/1311:04 pm
SEA
- TYS
1 stop8h 32m
United Airlines
Deal found 5/14![United Airlines logo]()
$504
This Southwest deal was found by Cheapflights users on 5/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/237:10 am
TYS
- SEA
2 stops9h 25m
Southwest
Sun 10/258:30 pm
SEA
- TYS
2 stops15h 50m
Southwest
Deal found 5/16![Southwest logo]()
$473
This Delta deal was found by Cheapflights users on 5/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/75:57 pm
TYS
- SEA
1 stop9h 12m
Delta
Sun 10/119:20 pm
SEA
- TYS
1 stop8h 52m
Delta
Deal found 5/14![Delta logo]()
$474
This Delta deal was found by Cheapflights users on 5/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/293:05 pm
TYS
- SEA
1 stop8h 36m
Delta
Tue 6/99:45 am
SEA
- TYS
1 stop8h 56m
Delta
Deal found 5/15![Delta logo]()
$508
Last-minute flights from Knoxville to SeattleDiscover last-minute flight deals from Knoxville to Seattle. Data last updated May 19, 2026 and is based on user searches.
Discover last-minute flight deals from Knoxville to Seattle. Data last updated May 19, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 5/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/317:00 am
TYS
- SEA
2 stops30h 36m
Multiple Airlines
Tue 6/97:41 pm
SEA
- TYS
1 stop20h 56m
Multiple Airlines
Deal found 5/15![Multiple Airlines logo]()
$370
This Kiwi.com deal was found by Cheapflights users on 5/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/17:24 pm
TYS
- SEA
2 stops41h 42m
Multiple Airlines
Tue 6/97:41 pm
SEA
- TYS
1 stop20h 56m
Multiple Airlines
Deal found 5/15![Multiple Airlines logo]()
$411
This Kiwi.com deal was found by Cheapflights users on 5/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/47:00 am
TYS
- SEA
1 stop30h 06m
Multiple Airlines
Tue 6/97:41 pm
SEA
- TYS
1 stop20h 56m
Multiple Airlines
Deal found 5/15![Multiple Airlines logo]()
$399
This Booking.com deal was found by Cheapflights users on 5/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/58:32 pm
TYS
- SEA
1 stop16h 34m
Frontier
Tue 6/97:41 pm
SEA
- TYS
1 stop20h 56m
Frontier
Deal found 5/18![Frontier logo]()
$363
This Kiwi.com deal was found by Cheapflights users on 5/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/77:00 am
TYS
- SEA
1 stop30h 06m
Multiple Airlines
Sun 6/148:12 pm
SEA
- TYS
2 stops20h 25m
Multiple Airlines
Deal found 5/17![Multiple Airlines logo]()
$398
This Kiwi.com deal was found by Cheapflights users on 5/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/77:00 am
TYS
- SEA
1 stop30h 06m
Multiple Airlines
Thu 6/1811:53 am
SEA
- TYS
2 stops32h 00m
Multiple Airlines
Deal found 5/17![Multiple Airlines logo]()
$418
This Kiwi.com deal was found by Cheapflights users on 5/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/87:25 am
TYS
- SEA
2 stops29h 23m
Multiple Airlines
Sun 6/147:41 pm
SEA
- TYS
1 stop20h 56m
Multiple Airlines
Deal found 5/17![Multiple Airlines logo]()
$397
This Kiwi.com deal was found by Cheapflights users on 5/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/88:32 pm
TYS
- SEA
1 stop16h 16m
Multiple Airlines
Sat 6/137:41 pm
SEA
- TYS
2 stops47h 59m
Multiple Airlines
Deal found 5/18![Multiple Airlines logo]()
$416
This Booking.com deal was found by Cheapflights users on 5/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/228:32 pm
TYS
- SEA
1 stop16h 16m
Frontier
Tue 6/307:41 pm
SEA
- TYS
1 stop20h 56m
Frontier
Deal found 5/18![Frontier logo]()
$383
This American Airlines deal was found by Cheapflights users on 5/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/305:00 am
TYS
- SEA
1 stop7h 50m
American Airlines
Tue 7/145:05 am
SEA
- TYS
1 stop8h 36m
American Airlines
Deal found 5/18![American Airlines logo]()
$389
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 May 19, 2026.
Search for one-way flight options from Knoxville to Seattle. Find affordable one-way fares based on user searches. Data last updated May 19, 2026.
This Booking.com deal was found by Cheapflights users on 5/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com 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
Deal found 5/18![Frontier logo]()
$167
This Kiwi.com deal was found by Cheapflights users on 5/14. 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 8/248:30 am
TYS
- SEA
2 stops52h 18m
Multiple Airlines
Deal found 5/14![Multiple Airlines logo]()
$180
This Booking.com deal was found by Cheapflights users on 5/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/158:32 pm
TYS
- SEA
1 stop16h 16m
Frontier
Deal found 5/17![Frontier logo]()
$187
This Kiwi.com deal was found by Cheapflights users on 5/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/77:00 am
TYS
- SEA
3 stops54h 35m
Multiple Airlines
Deal found 5/18![Multiple Airlines logo]()
$190
This American Airlines deal was found by Cheapflights users on 5/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/165:00 am
TYS
- SEA
1 stop7h 50m
American Airlines
Deal found 5/17![American Airlines logo]()
$195
This Southwest deal was found by Cheapflights users on 5/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/76:55 pm
TYS
- SEA
2 stops8h 25m
Southwest
Deal found 5/16![Southwest logo]()
$200
This Kiwi.com deal was found by Cheapflights users on 5/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/228:32 pm
TYS
- SEA
1 stop16h 16m
Frontier
Deal found 5/18![Frontier logo]()
$205
This Kiwi.com deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/268:32 pm
TYS
- SEA
2 stops25h 26m
Frontier
Deal found 5/14![Frontier logo]()
$206
This Booking.com deal was found by Cheapflights users on 5/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/58:32 pm
TYS
- SEA
1 stop16h 34m
Frontier
Deal found 5/17![Frontier logo]()
$207
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 May 19, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $309 (Kiwi.com) |
One-way from | $167 (Booking.com) |
Popular in | December |
Cheapest in | August |
Average price | $516 |
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 May 19, 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 7/1
6:42 pm-11:59 pm
1 stop8h 17m
Seattle/Tacoma Intl
Wed 7/15
11:59 pm-11:05 am
1 stop8h 06m
$389
Quickest round-trip
KnoxvilleSeattle
TYS - SEA
TYSSEA
Knoxville McGhee Tyson
Wed 7/8
7:43 pm-11:59 pm
1 stop7h 16m
Seattle/Tacoma Intl
Wed 7/15
11:59 pm-11:05 am
1 stop8h 06m
$389
KnoxvilleSeattle
TYS - SEA
TYSSEA
Knoxville McGhee Tyson
Tue 8/25
5:45 am-9:49 am
1 stop7h 04m
Seattle/Tacoma Intl
Sun 8/30
10:35 pm-11:05 am
1 stop9h 30m
$436
KnoxvilleSeattle
TYS - SEA
TYSSEA
Knoxville McGhee Tyson
Wed 9/2
3:00 pm-11:05 pm
1 stop11h 05m
Seattle/Tacoma Intl
Fri 9/11
11:05 pm-5:40 pm
2 stops15h 35m
$439
KnoxvilleSeattle
TYS - SEA
TYSSEA
Knoxville McGhee Tyson
Sat 9/12
1:55 pm-6:15 pm
1 stop7h 20m
Seattle/Tacoma Intl
Sun 9/20
11:05 pm-11:55 am
2 stops9h 50m
$441
KnoxvilleSeattle
TYS - SEA
TYSSEA
Knoxville McGhee Tyson
Fri 10/23
7:10 am-1:35 pm
2 stops9h 25m
Seattle/Tacoma Intl
Sun 10/25
8:30 pm-3:20 pm
2 stops15h 50m
$473
KnoxvilleSeattle
TYS - SEA
TYSSEA
Knoxville McGhee Tyson
Wed 10/7
5:57 pm-12:09 am
1 stop9h 12m
Seattle/Tacoma Intl
Sun 10/11
9:20 pm-9:12 am
1 stop8h 52m
$474
KnoxvilleSeattle
TYS - SEA
TYSSEA
Knoxville McGhee Tyson
Wed 8/19
7:15 am-2:52 pm
1 stop10h 37m
Seattle/Tacoma Intl
Tue 9/1
11:00 pm-2:37 pm
2 stops12h 37m
$504
KnoxvilleSeattle
TYS - SEA
TYSSEA
Knoxville McGhee Tyson
Wed 10/7
7:00 am-7:14 pm
2 stops15h 14m
Seattle/Tacoma Intl
Tue 10/13
11:04 pm-10:36 am
1 stop8h 32m
$504
KnoxvilleSeattle
TYS - SEA
TYSSEA
Knoxville McGhee Tyson
Fri 5/29
3:05 pm-8:41 pm
1 stop8h 36m
Seattle/Tacoma Intl
Tue 6/9
9:45 am-9:41 pm
1 stop8h 56m
$508
Showing 1-10 of 21 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 May.
| 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 90 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, August is the cheapest month in which you can book a flight from Knoxville to Seattle (average of $412). 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 May 19, 2026.
Peruse reviews from past customers who have flown with Delta,United Airlines, andAmerican 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
Entertainment
7.8
Food
7.2
Overall
7.9
Comfort
7.8
Crew
8.5
Reviews
1 / 20
8.0
ExcellentRakshith,May 2026
TPE - SEA
Boarding
8.1
Entertainment
7.8
Food
7.2
Overall
7.9
Comfort
7.8
Crew
8.5
Reviews
1 / 20
8.0
ExcellentRakshith,May 2026
TPE - SEA
Boarding
8.1
Entertainment
7.8
Food
7.2
Overall
7.9
Comfort
7.8
Crew
8.5
Reviews
1 / 20
8.0
ExcellentRakshith,May 2026
TPE - SEA
Boarding
8.1
Entertainment
7.8
Food
7.2
Overall
7.9
Comfort
7.8
Crew
8.5
Reviews
1 / 20
8.0
ExcellentRakshith,May 2026
TPE - SEA
Boarding
8.1
Entertainment
7.8
Food
7.2
Overall
7.9
Comfort
7.8
Crew
8.5
Reviews
1 / 20
8.0
ExcellentRakshith,May 2026
TPE - 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
Ocean Shores
Olympia
Lacey
Edmonds
Leavenworth
Snoqualmie
Tumwater
Tukwila
Puyallup
Kent
Lynnwood
Renton
Ellensburg
Fife
Lakewood
Issaquah
Shoreline
Marysville
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Knoxville and Seattle flights
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Other flights from Knoxville
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Top 4 airlines flying from Knoxville to Seattle
Discover the top 4 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 May 19, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$179 | Average$278 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$308 | Average$522 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$308 | Average$549 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$371 | Average$523 | FlexibilityNo cancel fee | On-time69% |