$126+ Cheap flights from Seattle to Knoxville (SEA - TYS)
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 8/13. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — TYS
Aug 6 — Aug 131
Round-trip
1 adult, Economy
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Find cheap flights from Seattle to Knoxville 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 Seattle to KnoxvilleExplore the most affordable flight options available from Seattle to Knoxville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 7, 2026.
Explore the most affordable flight options available from Seattle to Knoxville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 7, 2026.
This United Airlines deal was found by Cheapflights users on 7/7. 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 9/97:00 am
SEA
- TYS
1 stop6h 58m
United Airlines
Tue 9/154:50 pm
TYS
- SEA
1 stop7h 41m
United Airlines
Deal found 7/7![United Airlines logo]()
$261
This Kiwi.com deal was found by Cheapflights users on 7/4. 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.
Thu 9/109:16 pm
SEA
- TYS
1 stop17h 57m
Multiple Airlines
Sun 9/137:00 am
TYS
- SEA
1 stop20h 27m
Multiple Airlines
Deal found 7/4![Multiple Airlines logo]()
$284
This Kiwi.com deal was found by Cheapflights users on 7/5. 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 8/138:53 pm
SEA
- TYS
1 stop14h 04m
Multiple Airlines
Mon 8/176:30 am
TYS
- SEA
2 stops29h 49m
Multiple Airlines
Deal found 7/5![Multiple Airlines logo]()
$300
This Southwest deal was found by Cheapflights users on 7/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2011:00 pm
SEA
- TYS
1 stop10h 20m
Southwest
Thu 8/274:50 pm
TYS
- SEA
2 stops10h 30m
Southwest
Deal found 7/7![Southwest logo]()
$305
This Booking.com deal was found by Cheapflights users on 7/5. 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.
Thu 8/137:06 pm
SEA
- TYS
1 stop21h 18m
Frontier
Mon 8/178:19 pm
TYS
- SEA
1 stop20h 03m
Frontier
Deal found 7/5![Frontier logo]()
$311
This American Airlines deal was found by Cheapflights users on 7/7. 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.
Wed 10/2110:26 am
SEA
- TYS
1 stop9h 56m
American Airlines
Wed 10/286:56 am
TYS
- SEA
1 stop8h 31m
American Airlines
Deal found 7/7![American Airlines logo]()
$312
This Kiwi.com deal was found by Cheapflights users on 7/5. 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 8/127:06 pm
SEA
- TYS
1 stop15h 55m
Multiple Airlines
Mon 8/176:29 pm
TYS
- SEA
2 stops43h 10m
Multiple Airlines
Deal found 7/5![Multiple Airlines logo]()
$330
This Southwest deal was found by Cheapflights users on 7/7. 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 9/96:40 am
SEA
- TYS
1 stop6h 50m
Southwest
Tue 9/155:30 pm
TYS
- SEA
2 stops9h 05m
Southwest
Deal found 7/7![Southwest logo]()
$336
This Booking.com deal was found by Cheapflights users on 7/3. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/27:06 pm
SEA
- TYS
1 stop21h 18m
Frontier
Mon 8/108:19 pm
TYS
- SEA
1 stop15h 45m
Frontier
Deal found 7/3![Frontier logo]()
$353
Best flights from Seattle to KnoxvilleDiscover carefully curated flight deals from Seattle to Knoxville that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 7, 2026.
Discover carefully curated flight deals from Seattle to Knoxville that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 7, 2026.
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/116:25 am
SEA
- TYS
2 stops9h 30m
Southwest
Wed 8/123:00 pm
TYS
- SEA
1 stop11h 05m
Southwest
Deal found 7/2![Southwest logo]()
$366
This Delta deal was found by Cheapflights users on 7/5. 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 10/216:00 am
SEA
- TYS
1 stop9h 16m
Delta
Wed 10/286:57 pm
TYS
- SEA
1 stop8h 02m
Delta
Deal found 7/5![Delta logo]()
$401
This United Airlines deal was found by Cheapflights users on 7/5. 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 10/217:25 pm
SEA
- TYS
2 stops11h 20m
United Airlines
Wed 10/2810:48 am
TYS
- SEA
2 stops14h 09m
United Airlines
Deal found 7/5![United Airlines logo]()
$521
This Southwest deal was found by Cheapflights users on 7/7. 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 8/1111:00 pm
SEA
- TYS
1 stop10h 05m
Southwest
Fri 8/144:50 pm
TYS
- SEA
2 stops10h 30m
Southwest
Deal found 7/7![Southwest logo]()
$399
This Delta deal was found by Cheapflights users on 7/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/1611:35 am
SEA
- TYS
1 stop9h 20m
Delta
Mon 9/217:25 pm
TYS
- SEA
1 stop7h 34m
Delta
Deal found 7/6![Delta logo]()
$429
This Southwest deal was found by Cheapflights users on 7/3. 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.
Sun 10/1812:10 am
SEA
- TYS
2 stops9h 05m
Southwest
Sat 10/246:40 am
TYS
- SEA
2 stops10h 15m
Southwest
Deal found 7/3![Southwest logo]()
$407
This United Airlines deal was found by Cheapflights users on 7/7. 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 9/167:00 am
SEA
- TYS
1 stop6h 58m
United Airlines
Tue 9/226:00 am
TYS
- SEA
3 stops18h 31m
United Airlines
Deal found 7/7![United Airlines logo]()
$521
This United Airlines deal was found by Cheapflights users on 7/4. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/3010:52 am
SEA
- TYS
1 stop6h 52m
United Airlines
Sat 8/152:21 pm
TYS
- SEA
1 stop10h 15m
United Airlines
Deal found 7/4![United Airlines logo]()
$538
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/1412:10 am
SEA
- TYS
2 stops9h 05m
Southwest
Sun 10/184:15 pm
TYS
- SEA
2 stops12h 10m
Southwest
Deal found 7/2![Southwest logo]()
$497
This Southwest deal was found by Cheapflights users on 7/4. 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.
Thu 11/129:10 am
SEA
- TYS
2 stops8h 20m
Southwest
Tue 12/17:00 am
TYS
- SEA
2 stops13h 45m
Southwest
Deal found 7/4![Southwest logo]()
$513
This Southwest deal was found by Cheapflights users on 7/4. 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.
Mon 11/95:30 am
SEA
- TYS
2 stops12h 00m
Southwest
Tue 12/17:00 am
TYS
- SEA
2 stops13h 45m
Southwest
Deal found 7/4![Southwest logo]()
$519
Last-minute flights from Seattle to KnoxvilleDiscover last-minute flight deals from Seattle to Knoxville. Data last updated July 7, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Knoxville. Data last updated July 7, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 7/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/227:06 pm
SEA
- TYS
1 stop15h 45m
Multiple Airlines
Fri 7/317:20 pm
TYS
- SEA
2 stops42h 19m
Multiple Airlines
Deal found 7/5![Multiple Airlines logo]()
$373
This Kiwi.com deal was found by Cheapflights users on 7/3. 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.
Thu 7/308:53 pm
SEA
- TYS
2 stops47h 04m
Multiple Airlines
Wed 8/58:19 pm
TYS
- SEA
1 stop15h 45m
Multiple Airlines
Deal found 7/3![Multiple Airlines logo]()
$386
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.
Sat 8/112:35 pm
SEA
- TYS
2 stops31h 21m
Multiple Airlines
Fri 8/72:47 pm
TYS
- SEA
1 stop23h 17m
Multiple Airlines
Deal found 7/2![Multiple Airlines logo]()
$387
This Booking.com deal was found by Cheapflights users on 7/3. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/27:06 pm
SEA
- TYS
1 stop21h 18m
Frontier
Mon 8/108:19 pm
TYS
- SEA
1 stop15h 45m
Frontier
Deal found 7/3![Frontier logo]()
$353
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 8/98:53 pm
SEA
- TYS
1 stop14h 04m
Multiple Airlines
Sun 8/237:00 am
TYS
- SEA
1 stop9h 22m
Multiple Airlines
Deal found 7/2![Multiple Airlines logo]()
$393
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/116:25 am
SEA
- TYS
2 stops9h 30m
Southwest
Wed 8/123:00 pm
TYS
- SEA
1 stop11h 05m
Southwest
Deal found 7/2![Southwest logo]()
$366
This Kiwi.com deal was found by Cheapflights users on 7/5. 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 8/127:06 pm
SEA
- TYS
1 stop15h 55m
Multiple Airlines
Mon 8/176:29 pm
TYS
- SEA
2 stops43h 10m
Multiple Airlines
Deal found 7/5![Multiple Airlines logo]()
$330
This Kiwi.com deal was found by Cheapflights users on 7/5. 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 8/138:53 pm
SEA
- TYS
1 stop14h 04m
Multiple Airlines
Mon 8/176:30 am
TYS
- SEA
2 stops29h 49m
Multiple Airlines
Deal found 7/5![Multiple Airlines logo]()
$300
This Booking.com deal was found by Cheapflights users on 7/5. 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.
Thu 8/137:06 pm
SEA
- TYS
1 stop21h 18m
Frontier
Mon 8/178:19 pm
TYS
- SEA
1 stop20h 03m
Frontier
Deal found 7/5![Frontier logo]()
$311
This Southwest deal was found by Cheapflights users on 7/6. 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 8/2411:00 pm
SEA
- TYS
1 stop10h 05m
Southwest
Mon 8/314:50 pm
TYS
- SEA
2 stops10h 50m
Southwest
Deal found 7/6![Southwest logo]()
$305
One-way flights from Seattle to KnoxvilleSearch for one-way flight options from Seattle to Knoxville. Find affordable one-way fares based on user searches. Data last updated July 7, 2026.
Search for one-way flight options from Seattle to Knoxville. Find affordable one-way fares based on user searches. Data last updated July 7, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/5. 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 8/138:53 pm
SEA
- TYS
2 stops46h 10m
Multiple Airlines
Deal found 7/5![Multiple Airlines logo]()
$126
This Kiwi.com deal was found by Cheapflights users on 7/4. 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.
Sat 10/37:00 am
SEA
- TYS
1 stop27h 11m
Multiple Airlines
Deal found 7/4![Multiple Airlines logo]()
$137
This Booking.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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/117:06 pm
SEA
- TYS
1 stop21h 18m
Frontier
Deal found 7/2![Frontier logo]()
$140
This Kiwi.com deal was found by Cheapflights users on 7/4. 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.
Wed 9/309:16 pm
SEA
- TYS
1 stop22h 45m
Multiple Airlines
Deal found 7/4![Multiple Airlines logo]()
$148
This Kiwi.com deal was found by Cheapflights users on 7/5. 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 8/127:06 pm
SEA
- TYS
1 stop15h 55m
Multiple Airlines
Deal found 7/5![Multiple Airlines logo]()
$158
This Kiwi.com deal was found by Cheapflights users on 7/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/297:06 pm
SEA
- TYS
1 stop15h 45m
Multiple Airlines
Deal found 7/5![Multiple Airlines logo]()
$165
This Kiwi.com deal was found by Cheapflights users on 7/5. 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 8/197:06 pm
SEA
- TYS
2 stops39h 55m
Multiple Airlines
Deal found 7/5![Multiple Airlines logo]()
$166
This Kiwi.com deal was found by Cheapflights users on 7/4. 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.
Thu 10/19:16 pm
SEA
- TYS
1 stop20h 58m
Multiple Airlines
Deal found 7/4![Multiple Airlines logo]()
$178
This Kiwi.com deal was found by Cheapflights users on 7/4. 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.
Tue 10/62:15 pm
SEA
- TYS
2 stops43h 56m
Multiple Airlines
Deal found 7/4![Multiple Airlines logo]()
$179
Find flight deals from Seattle to Knoxville
Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Knoxville (TYS). 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 7, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $261 (American Airlines) |
One-way from | $126 (Kiwi.com) |
Popular in | March |
Cheapest in | August |
Average price | $505 |
Cheapflights Fare Finder
Customize your flight search to find flights from Seattle to Knoxville 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 7, 2026.
Use the filters below to find and compare flights from Seattle to Knoxville that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
SeattleKnoxville
SEA - TYS
SEATYS
Seattle/Tacoma Intl
Tue 8/11
6:25 am-6:55 pm
2 stops9h 30m
Knoxville McGhee Tyson
Wed 8/12
3:00 pm-11:05 pm
1 stop11h 05m
$366
SeattleKnoxville
SEA - TYS
SEATYS
Seattle/Tacoma Intl
Tue 8/11
11:00 pm-12:05 pm
1 stop10h 05m
Knoxville McGhee Tyson
Fri 8/14
4:50 pm-12:20 am
2 stops10h 30m
$399
SeattleKnoxville
SEA - TYS
SEATYS
Seattle/Tacoma Intl
Wed 10/21
6:00 am-6:16 pm
1 stop9h 16m
Knoxville McGhee Tyson
Wed 10/28
6:57 pm-11:59 pm
1 stop8h 02m
$401
SeattleKnoxville
SEA - TYS
SEATYS
Seattle/Tacoma Intl
Sun 10/18
12:10 am-12:15 pm
2 stops9h 05m
Knoxville McGhee Tyson
Sat 10/24
6:40 am-1:55 pm
2 stops10h 15m
$407
Quickest round-trip
SeattleKnoxville
SEA - TYS
SEATYS
Seattle/Tacoma Intl
Wed 9/16
11:35 am-11:55 pm
1 stop9h 20m
Knoxville McGhee Tyson
Mon 9/21
7:25 pm-11:59 pm
1 stop7h 34m
$429
SeattleKnoxville
SEA - TYS
SEATYS
Seattle/Tacoma Intl
Wed 10/14
12:10 am-12:15 pm
2 stops9h 05m
Knoxville McGhee Tyson
Sun 10/18
4:15 pm-1:25 am
2 stops12h 10m
$497
SeattleKnoxville
SEA - TYS
SEATYS
Seattle/Tacoma Intl
Thu 11/12
9:10 am-8:30 pm
2 stops8h 20m
Knoxville McGhee Tyson
Tue 12/1
7:00 am-5:45 pm
2 stops13h 45m
$513
SeattleKnoxville
SEA - TYS
SEATYS
Seattle/Tacoma Intl
Mon 11/9
5:30 am-8:30 pm
2 stops12h 00m
Knoxville McGhee Tyson
Tue 12/1
7:00 am-5:45 pm
2 stops13h 45m
$519
SeattleKnoxville
SEA - TYS
SEATYS
Seattle/Tacoma Intl
Wed 10/21
7:25 pm-9:45 am
2 stops11h 20m
Knoxville McGhee Tyson
Wed 10/28
10:48 am-9:57 pm
2 stops14h 09m
$521
SeattleKnoxville
SEA - TYS
SEATYS
Seattle/Tacoma Intl
Wed 9/16
7:00 am-4:58 pm
1 stop6h 58m
Knoxville McGhee Tyson
Tue 9/22
6:00 am-9:31 pm
3 stops18h 31m
$521
Showing 1-10 of 22 resultsSorted by cheapest first
Compare providers for flights from Seattle to Knoxville
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 Seattle to Knoxville in July.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Seattle-Knoxville flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Knoxville flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-Knoxville flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Seattle-Knoxville 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 Seattle-Knoxville 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 Seattle to Knoxville
Have a flexible travel schedule? Discover the best time to fly to Knoxville from Seattle with our price prediction graph.
SEA-TYS
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 Seattle to Knoxville
How far ahead should I book a flight from Seattle to Knoxville?
The price you pay for your flight from Seattle to Knoxville may vary depending on when you book. For the best chance of a lower fare, look to book 56 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
What is the cheapest month to book a flight from Seattle to Knoxville?
Currently, August is the cheapest month in which you can book a flight from Seattle to Knoxville (average of $463). Flying from Seattle to Knoxville in March is currently the most expensive (average of $681). 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 Seattle to Knoxville?
Reviews of airlines servicing Knoxville
Get insights into the airlines that provide service to Knoxville. 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 Knoxville. Reviews last updated July 7, 2026.
See what other customers who have flown with Alaska Airlines,Delta, andUnited Airlines from Seattle to Knoxville have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Food
7.0
Overall
7.9
Crew
8.5
Entertainment
7.0
Boarding
8.1
Comfort
7.8
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Food
7.0
Overall
7.9
Crew
8.5
Entertainment
7.0
Boarding
8.1
Comfort
7.8
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Food
7.0
Overall
7.9
Crew
8.5
Entertainment
7.0
Boarding
8.1
Comfort
7.8
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Food
7.0
Overall
7.9
Crew
8.5
Entertainment
7.0
Boarding
8.1
Comfort
7.8
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Food
7.0
Overall
7.9
Crew
8.5
Entertainment
7.0
Boarding
8.1
Comfort
7.8
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Related info for your journey
Find useful and relevant information for your journey from Seattle to Knoxville. 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 Knoxville?
Book flights to Knoxville if you plan to visit one of these locationsCherokee
Crossville
Morristown
Bryson City
Murphy
Alcoa
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Other flights to Knoxville
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Top 4 airlines flying from Seattle to Knoxville
Discover the top 4 airlines that operate flights from Seattle to Knoxville. 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 7, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$323 | Average$557 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$360 | Average$566 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$368 | Average$536 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$641 | Average$760 | FlexibilityNo cancel fee | On-time75% |