$205+ 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 7/17. Fares are subject to change and may not be available on all flights or dates of travel.
TYS — SEA
jul. 4 — jul. 111
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 junio 4, 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 junio 4, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/3. 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.
lun. 8/176:30 am
TYS
- SEA
2 stops30h 18m
Multiple Airlines
mié. 8/267:41 pm
SEA
- TYS
1 stop15h 08m
Multiple Airlines
Deal found 6/3![Multiple Airlines logo]()
$268
This Kiwi.com deal was found by Cheapflights users on 6/4. 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.
lun. 8/318:00 am
TYS
- SEA
2 stops28h 48m
Multiple Airlines
mié. 9/97:00 am
SEA
- TYS
1 stop27h 44m
Multiple Airlines
Deal found 6/4![Multiple Airlines logo]()
$279
This Kiwi.com deal was found by Cheapflights users on 6/4. 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.
lun. 8/318:00 am
TYS
- SEA
2 stops28h 48m
Multiple Airlines
jue. 9/109:16 pm
SEA
- TYS
1 stop17h 57m
Multiple Airlines
Deal found 6/4![Multiple Airlines logo]()
$296
This Kiwi.com deal was found by Cheapflights users on 6/4. 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.
jue. 9/37:00 am
TYS
- SEA
1 stop10h 04m
Multiple Airlines
mié. 9/99:16 pm
SEA
- TYS
2 stops37h 11m
Multiple Airlines
Deal found 6/4![Multiple Airlines logo]()
$305
This Kiwi.com deal was found by Cheapflights users on 6/4. 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.
lun. 8/318:00 am
TYS
- SEA
2 stops28h 48m
Multiple Airlines
sáb. 9/127:00 am
SEA
- TYS
1 stop27h 44m
Multiple Airlines
Deal found 6/4![Multiple Airlines logo]()
$319
This Kiwi.com deal was found by Cheapflights users on 6/2. 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.
vie. 8/146:30 am
TYS
- SEA
2 stops31h 50m
Multiple Airlines
sáb. 8/227:41 pm
SEA
- TYS
1 stop15h 08m
Multiple Airlines
Deal found 6/2![Multiple Airlines logo]()
$328
This Kiwi.com deal was found by Cheapflights users on 6/4. 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.
jue. 9/37:00 am
TYS
- SEA
1 stop10h 04m
Multiple Airlines
mar. 9/152:15 pm
SEA
- TYS
2 stops44h 29m
Multiple Airlines
Deal found 6/4![Multiple Airlines logo]()
$331
This Kiwi.com deal was found by Cheapflights users on 6/4. 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.
dom. 9/67:00 am
TYS
- SEA
1 stop10h 04m
Multiple Airlines
mié. 9/97:00 am
SEA
- TYS
1 stop27h 44m
Multiple Airlines
Deal found 6/4![Multiple Airlines logo]()
$332
This Kiwi.com deal was found by Cheapflights users on 5/31. 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.
lun. 8/2412:54 pm
TYS
- SEA
1 stop24h 41m
Multiple Airlines
mié. 9/27:41 pm
SEA
- TYS
1 stop15h 03m
Multiple Airlines
Deal found 5/31![Multiple Airlines logo]()
$334
This Kiwi.com deal was found by Cheapflights users on 6/3. 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.
lun. 8/106:30 am
TYS
- SEA
2 stops29h 34m
Multiple Airlines
jue. 8/208:13 pm
SEA
- TYS
1 stop22h 33m
Multiple Airlines
Deal found 6/3![Multiple Airlines logo]()
$341
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 junio 4, 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 junio 4, 2026.
This Gotogate deal was found by Cheapflights users on 5/30. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 7/88:19 pm
TYS
- SEA
1 stop18h 01m
Frontier
mar. 7/147:06 pm
SEA
- TYS
1 stop21h 18m
Frontier
Deal found 5/30![Frontier logo]()
$439
This Delta deal was found by Cheapflights users on 6/4. 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.
mié. 9/26:12 pm
TYS
- SEA
1 stop8h 45m
Delta
lun. 9/146:00 am
SEA
- TYS
1 stop8h 12m
Delta
Deal found 6/4![Delta logo]()
$489
This Southwest deal was found by Cheapflights users on 6/4. 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.
jue. 8/64:50 pm
TYS
- SEA
1 stop9h 05m
Southwest
lun. 8/107:25 pm
SEA
- TYS
2 stops13h 40m
Southwest
Deal found 6/4![Southwest logo]()
$501
This United Airlines deal was found by Cheapflights users on 5/31. 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.
mar. 8/257:00 am
TYS
- SEA
2 stops10h 24m
United Airlines
mar. 9/111:03 am
SEA
- TYS
1 stop8h 26m
United Airlines
Deal found 5/31![United Airlines logo]()
$504
This Southwest deal was found by Cheapflights users on 5/30. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 7/86:55 pm
TYS
- SEA
2 stops8h 30m
Southwest
mar. 7/147:35 am
SEA
- TYS
1 stop7h 45m
Southwest
Deal found 5/30![Southwest logo]()
$512
This United Airlines deal was found by Cheapflights users on 6/2. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 8/299:45 am
TYS
- SEA
2 stops12h 22m
United Airlines
mar. 9/84:45 pm
SEA
- TYS
2 stops14h 12m
United Airlines
Deal found 6/2![United Airlines logo]()
$524
This United Airlines deal was found by Cheapflights users on 6/2. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 8/274:50 pm
TYS
- SEA
1 stop9h 14m
United Airlines
sáb. 9/55:20 pm
SEA
- TYS
2 stops13h 37m
United Airlines
Deal found 6/2![United Airlines logo]()
$534
This United Airlines deal was found by Cheapflights users on 5/31. 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.
mar. 9/16:02 pm
TYS
- SEA
1 stop7h 43m
United Airlines
vie. 9/117:35 pm
SEA
- TYS
2 stops11h 22m
United Airlines
Deal found 5/31![United Airlines logo]()
$538
Last-minute flights from Knoxville to SeattleDiscover last-minute flight deals from Knoxville to Seattle. Data last updated junio 4, 2026 and is based on user searches.
Discover last-minute flight deals from Knoxville to Seattle. Data last updated junio 4, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 6/2. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 6/95:00 am
TYS
- SEA
1 stop10h 10m
American Airlines
lun. 6/1512:49 am
SEA
- TYS
1 stop9h 13m
American Airlines
Deal found 6/2![American Airlines logo]()
$703
This Southwest deal was found by Cheapflights users on 6/2. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 6/95:40 pm
TYS
- SEA
1 stop8h 50m
Southwest
mar. 6/166:30 am
SEA
- TYS
2 stops10h 50m
Southwest
Deal found 6/2![Southwest logo]()
$813
This United Airlines deal was found by Cheapflights users on 6/2. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 6/101:54 pm
TYS
- SEA
1 stop8h 11m
United Airlines
mié. 6/1711:20 pm
SEA
- TYS
1 stop8h 22m
United Airlines
Deal found 6/2![United Airlines logo]()
$682
This United Airlines deal was found by Cheapflights users on 6/1. 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.
jue. 6/114:56 pm
TYS
- SEA
1 stop7h 14m
United Airlines
mié. 6/1710:40 pm
SEA
- TYS
1 stop8h 03m
United Airlines
Deal found 6/1![United Airlines logo]()
$598
This United Airlines deal was found by Cheapflights users on 6/1. 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.
jue. 6/114:56 pm
TYS
- SEA
1 stop7h 14m
United Airlines
jue. 6/257:05 am
SEA
- TYS
1 stop8h 02m
United Airlines
Deal found 6/1![United Airlines logo]()
$628
This Kiwi.com deal was found by Cheapflights users on 6/1. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 6/117:00 am
TYS
- SEA
1 stop10h 18m
Multiple Airlines
jue. 6/253:33 pm
SEA
- TYS
2 stops17h 26m
Multiple Airlines
Deal found 6/1![Multiple Airlines logo]()
$642
This Kiwi.com deal was found by Cheapflights users on 6/1. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 6/117:00 am
TYS
- SEA
1 stop10h 18m
Multiple Airlines
mié. 6/177:41 pm
SEA
- TYS
2 stops23h 48m
Multiple Airlines
Deal found 6/1![Multiple Airlines logo]()
$691
This Booking.com deal was found by Cheapflights users on 6/1. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 6/128:32 pm
TYS
- SEA
1 stop20h 46m
Frontier
jue. 6/187:41 pm
SEA
- TYS
1 stop20h 56m
Frontier
Deal found 6/1![Frontier logo]()
$474
This Kiwi.com deal was found by Cheapflights users on 6/1. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 6/122:46 pm
TYS
- SEA
1 stop22h 49m
Multiple Airlines
jue. 6/183:33 pm
SEA
- TYS
2 stops28h 20m
Multiple Airlines
Deal found 6/1![Multiple Airlines logo]()
$721
This American Airlines deal was found by Cheapflights users on 6/3. 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.
sáb. 6/133:40 pm
TYS
- SEA
1 stop10h 19m
American Airlines
dom. 6/2112:49 am
SEA
- TYS
1 stop9h 13m
American Airlines
Deal found 6/3![American Airlines logo]()
$649
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 junio 4, 2026.
Search for one-way flight options from Knoxville to Seattle. Find affordable one-way fares based on user searches. Data last updated junio 4, 2026.
This Mytrip deal was found by Cheapflights users on 6/2. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 7/178:19 pm
TYS
- SEA
1 stop18h 01m
Frontier
Deal found 6/2![Frontier logo]()
$205
This CheapOair deal was found by Cheapflights users on 6/3. 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.
vie. 8/148:19 pm
TYS
- SEA
1 stop18h 01m
Frontier
Deal found 6/3![Frontier logo]()
$206
This CheapOair deal was found by Cheapflights users on 6/1. 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.
vie. 6/198:32 pm
TYS
- SEA
1 stop16h 16m
Frontier
Deal found 6/1![Frontier logo]()
$226
This Trip.com deal was found by Cheapflights users on 6/3. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 6/178:32 pm
TYS
- SEA
1 stop16h 16m
Frontier
Deal found 6/3![Frontier logo]()
$227
This Delta deal was found by Cheapflights users on 6/2. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 8/146:12 pm
TYS
- SEA
1 stop8h 45m
Delta
Deal found 6/2![Delta logo]()
$229
This Kiwi.com deal was found by Cheapflights users on 6/2. 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.
vie. 7/176:30 am
TYS
- SEA
2 stops31h 50m
Multiple Airlines
Deal found 6/2![Multiple Airlines logo]()
$239
This Southwest deal was found by Cheapflights users on 6/3. 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.
mar. 7/76:55 pm
TYS
- SEA
2 stops8h 30m
Southwest
Deal found 6/3![Southwest logo]()
$254
This CheapOair deal was found by Cheapflights users on 5/31. 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.
mié. 6/108:32 pm
TYS
- SEA
1 stop20h 46m
Frontier
Deal found 5/31![Frontier logo]()
$256
This Kiwi.com deal was found by Cheapflights users on 6/1. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 6/197:26 pm
TYS
- SEA
2 stops21h 52m
Multiple Airlines
Deal found 6/1![Multiple Airlines logo]()
$271
This Kiwi.com deal was found by Cheapflights users on 6/2. 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.
jue. 7/1612:59 pm
TYS
- SEA
2 stops24h 40m
Multiple Airlines
Deal found 6/2![Multiple Airlines logo]()
$276
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 junio 4, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $268 (Kiwi.com) |
One-way from | $205 (Mytrip) |
Popular in | December |
Cheapest in | August |
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 junio 4, 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
mié. 7/8
8:19 pm-11:20 am
1 stop18h 01m
Seattle/Tacoma Intl
mar. 7/14
7:06 pm-7:24 pm
1 stop21h 18m
$439
KnoxvilleSeattle
TYS - SEA
TYSSEA
Knoxville McGhee Tyson
mié. 9/2
6:12 pm-11:57 pm
1 stop8h 45m
Seattle/Tacoma Intl
lun. 9/14
6:00 am-5:12 pm
1 stop8h 12m
$489
KnoxvilleSeattle
TYS - SEA
TYSSEA
Knoxville McGhee Tyson
jue. 8/6
4:50 pm-10:55 pm
1 stop9h 05m
Seattle/Tacoma Intl
lun. 8/10
7:25 pm-12:05 pm
2 stops13h 40m
$501
KnoxvilleSeattle
TYS - SEA
TYSSEA
Knoxville McGhee Tyson
mar. 8/25
7:00 am-2:24 pm
2 stops10h 24m
Seattle/Tacoma Intl
mar. 9/1
11:03 am-10:29 pm
1 stop8h 26m
$504
Quickest round-trip
KnoxvilleSeattle
TYS - SEA
TYSSEA
Knoxville McGhee Tyson
mié. 7/8
6:55 pm-12:25 am
2 stops8h 30m
Seattle/Tacoma Intl
mar. 7/14
7:35 am-6:20 pm
1 stop7h 45m
$512
KnoxvilleSeattle
TYS - SEA
TYSSEA
Knoxville McGhee Tyson
sáb. 8/29
9:45 am-7:07 pm
2 stops12h 22m
Seattle/Tacoma Intl
mar. 9/8
4:45 pm-9:57 am
2 stops14h 12m
$524
KnoxvilleSeattle
TYS - SEA
TYSSEA
Knoxville McGhee Tyson
jue. 8/27
4:50 pm-11:04 pm
1 stop9h 14m
Seattle/Tacoma Intl
sáb. 9/5
5:20 pm-9:57 am
2 stops13h 37m
$534
KnoxvilleSeattle
TYS - SEA
TYSSEA
Knoxville McGhee Tyson
mar. 9/1
6:02 pm-10:45 pm
1 stop7h 43m
Seattle/Tacoma Intl
vie. 9/11
7:35 pm-9:57 am
2 stops11h 22m
$538
Cheapest one-way
KnoxvilleSeattle
TYS - SEA
TYSSEA
Knoxville McGhee Tyson
vie. 6/19
8:32 pm-9:48 am
1 stop16h 16m
$226
KnoxvilleSeattle
TYS - SEA
TYSSEA
Knoxville McGhee Tyson
vie. 8/14
4:38 pm-11:57 pm
1 stop10h 19m
$229
Showing 1-10 of 18 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 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 $436). 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 junio 4, 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
Comfort
7.8
Overall
7.9
Food
7.1
Entertainment
7.0
Crew
8.5
Reviews
1 / 20
8.0
ExcellentAnonymous,Jun 2026
RDU - SEA
Boarding
8.1
Comfort
7.8
Overall
7.9
Food
7.1
Entertainment
7.0
Crew
8.5
Reviews
1 / 20
8.0
ExcellentAnonymous,Jun 2026
RDU - SEA
Boarding
8.1
Comfort
7.8
Overall
7.9
Food
7.1
Entertainment
7.0
Crew
8.5
Reviews
1 / 20
8.0
ExcellentAnonymous,Jun 2026
RDU - SEA
Boarding
8.1
Comfort
7.8
Overall
7.9
Food
7.1
Entertainment
7.0
Crew
8.5
Reviews
1 / 20
8.0
ExcellentAnonymous,Jun 2026
RDU - SEA
Boarding
8.1
Comfort
7.8
Overall
7.9
Food
7.1
Entertainment
7.0
Crew
8.5
Reviews
1 / 20
8.0
ExcellentAnonymous,Jun 2026
RDU - SEA
Boarding
8.1
Comfort
7.8
Overall
7.9
Food
7.1
Entertainment
7.0
Crew
8.5
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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Find flights from Knoxville to Seattle, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Knoxville and Seattle flights
Browse other Knoxville and Seattle flight options. Last updated on junio 4, 2026.
Other flights from Knoxville
Browse through other flights departing from Knoxville. Flights are based on user searches made on Cheapflights and were last updated on junio 4, 2026.
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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 junio 4, 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 junio 4, 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$543 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$371 | Average$527 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$513 | Average$863 | FlexibilityNo cancel fee | On-time75% |