$148+ Cheap flights from Knoxville to Seattle (TYS - SEA)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/26. Fares are subject to change and may not be available on all flights or dates of travel.
TYS — SEA
Oct 7 — Oct 141
Round-trip
1 adult, Economy
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Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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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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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 September 7, 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 September 7, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/5. 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 10/226:30 am -
1 stop11h 42m
Sat 10/314:27 pm -
1 stop18h 44m
Deal found 9/5![Multiple Airlines logo]()
$195
This Kiwi.com deal was found by Cheapflights users on 9/4. 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.
Sun 11/19:29 pm -
1 stop15h 16m
Wed 11/44:27 pm -
1 stop17h 52m
Deal found 9/4![Multiple Airlines logo]()
$319
This American Airlines deal was found by Cheapflights users on 9/2. 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.
Wed 10/1410:00 am -
1 stop11h 06m
Mon 11/210:27 am -
1 stop10h 05m
Deal found 9/2![American Airlines logo]()
$337
This United Airlines deal was found by Cheapflights users on 9/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2910:43 am -
2 stops10h 14m
Sat 10/315:05 am -
1 stop7h 59m
Deal found 9/3![United Airlines logo]()
$342
This Southwest deal was found by Cheapflights users on 9/3. 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.
Tue 12/152:40 pm -
2 stops10h 50m
Mon 1/412:15 am -
2 stops9h 05m
Deal found 9/3![Southwest logo]()
$347
This Southwest deal was found by Cheapflights users on 9/3. 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.
Tue 11/107:05 am -
2 stops14h 55m
Tue 11/176:10 am -
1 stop6h 20m
Deal found 9/3![Southwest logo]()
$348
This American Airlines deal was found by Cheapflights users on 9/2. 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.
Sat 10/33:21 pm -
1 stop9h 31m
Tue 10/611:59 pm -
1 stop8h 06m
Deal found 9/2![American Airlines logo]()
$360
This United Airlines deal was found by Cheapflights users on 9/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/305:05 pm -
1 stop7h 14m
Tue 11/310:56 pm -
2 stops9h 34m
Deal found 9/3![United Airlines logo]()
$365
This Southwest deal was found by Cheapflights users on 9/2. 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.
Sat 10/176:40 am -
2 stops10h 15m
Sat 10/246:15 am -
2 stops8h 40m
Deal found 9/2![Southwest logo]()
$370
This American Airlines deal was found by Cheapflights users on 9/2. 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.
Wed 11/256:50 am -
1 stop11h 01m
Tue 12/15:10 am -
1 stop8h 30m
Deal found 9/2![American Airlines logo]()
$374
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 September 7, 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 September 7, 2026.
This Southwest deal was found by Cheapflights users on 9/2. 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.
Sat 10/176:40 am -
2 stops10h 15m
Sat 10/246:15 am -
2 stops8h 40m
Deal found 9/2![Southwest logo]()
$370
This United Airlines deal was found by Cheapflights users on 9/1. 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 9/226:00 am -
2 stops13h 14m
Tue 9/297:00 am -
1 stop10h 45m
Deal found 9/1![United Airlines logo]()
$452
This Southwest deal was found by Cheapflights users on 9/5. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/152:40 pm -
2 stops10h 50m
Mon 1/412:15 am -
2 stops9h 05m
Deal found 9/5![Southwest logo]()
$421
This United Airlines deal was found by Cheapflights users on 9/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2910:43 am -
2 stops10h 14m
Sat 10/3110:56 pm -
2 stops10h 34m
Deal found 9/3![United Airlines logo]()
$458
This Southwest deal was found by Cheapflights users on 9/4. 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 11/123:40 pm -
2 stops10h 20m
Mon 11/166:10 am -
1 stop6h 20m
Deal found 9/4![Southwest logo]()
$440
This United Airlines deal was found by Cheapflights users on 9/4. 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.
Tue 10/136:00 am -
1 stop8h 27m
Mon 11/27:35 pm -
2 stops11h 18m
Deal found 9/4![United Airlines logo]()
$538
This United Airlines deal was found by Cheapflights users on 9/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/255:05 pm -
1 stop9h 10m
Tue 12/17:30 pm -
2 stops11h 31m
Deal found 9/3![United Airlines logo]()
$540
This United Airlines deal was found by Cheapflights users on 9/6. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/147:15 am -
1 stop8h 33m
Mon 11/210:56 pm -
2 stops9h 34m
Deal found 9/6![United Airlines logo]()
$548
Last-minute flights from Knoxville to SeattleDiscover last-minute flight deals from Knoxville to Seattle. Data last updated September 7, 2026 and is based on user searches.
Discover last-minute flight deals from Knoxville to Seattle. Data last updated September 7, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 9/1. 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.
Thu 9/245:38 pm -
2 stops48h 30m
Sat 10/34:27 pm -
1 stop17h 44m
Deal found 9/1![Multiple Airlines logo]()
$380
This American Airlines deal was found by Cheapflights users on 9/2. 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.
Wed 9/308:00 am -
1 stop7h 50m
Wed 10/75:00 am -
1 stop8h 36m
Deal found 9/2![American Airlines logo]()
$374
This United Airlines deal was found by Cheapflights users on 9/2. 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.
Fri 10/212:05 pm -
1 stop9h 58m
Mon 10/511:13 pm -
1 stop7h 32m
Deal found 9/2![United Airlines logo]()
$376
This American Airlines deal was found by Cheapflights users on 9/2. 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.
Sat 10/33:21 pm -
1 stop9h 31m
Tue 10/611:59 pm -
1 stop8h 06m
Deal found 9/2![American Airlines logo]()
$360
This American Airlines deal was found by Cheapflights users on 9/5. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/131:58 pm -
1 stop10h 44m
Mon 11/211:34 pm -
1 stop8h 27m
Deal found 9/5![American Airlines logo]()
$423
This American Airlines deal was found by Cheapflights users on 9/2. 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.
Wed 10/1410:00 am -
1 stop11h 06m
Mon 11/210:27 am -
1 stop10h 05m
Deal found 9/2![American Airlines logo]()
$337
This Southwest deal was found by Cheapflights users on 9/2. 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.
Sat 10/176:40 am -
2 stops10h 15m
Sat 10/246:15 am -
2 stops8h 40m
Deal found 9/2![Southwest logo]()
$370
This Kiwi.com deal was found by Cheapflights users on 9/5. 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 10/226:30 am -
1 stop11h 42m
Sat 10/314:27 pm -
1 stop18h 44m
Deal found 9/5![Multiple Airlines logo]()
$195
This United Airlines deal was found by Cheapflights users on 9/2. 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.
Thu 10/2910:43 am -
2 stops10h 14m
Thu 10/2910:56 pm -
1 stop7h 57m
Deal found 9/2![United Airlines logo]()
$342
This United Airlines deal was found by Cheapflights users on 9/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/305:05 pm -
1 stop7h 14m
Tue 11/310:56 pm -
2 stops9h 34m
Deal found 9/3![United Airlines logo]()
$365
This Southwest deal was found by Cheapflights users on 9/3. 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.
Fri 10/301:50 pm -
2 stops14h 10m
Mon 11/212:15 am -
2 stops9h 05m
Deal found 9/3![Southwest logo]()
$393
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 September 7, 2026.
Search for one-way flight options from Knoxville to Seattle. Find affordable one-way fares based on user searches. Data last updated September 7, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/269:42 pm -
1 stop16h 17m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![Multiple Airlines logo]()
$148
This Delta deal was found by Cheapflights users on 9/1. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/226:13 pm -
1 stop8h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/1![Delta logo]()
$169
This Southwest deal was found by Cheapflights users on 9/1. 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.
Tue 9/225:30 pm -
2 stops9h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/1![Southwest logo]()
$174
This United Airlines deal was found by Cheapflights users on 9/2. 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.
Fri 10/237:15 am -
1 stop10h 38m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![United Airlines logo]()
$192
This Kiwi.com deal was found by Cheapflights users on 9/1. 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.
Fri 10/96:55 pm -
2 stops41h 03m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/1![Multiple Airlines logo]()
$199
This Kiwi.com deal was found by Cheapflights users on 9/2. 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.
Fri 10/2312:57 pm -
2 stops29h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![Multiple Airlines logo]()
$206
This Delta deal was found by Cheapflights users on 9/1. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/92:38 pm -
1 stop10h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/1![Delta logo]()
$220
This Kiwi.com deal was found by Cheapflights users on 9/2. 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 9/277:00 am -
1 stop11h 08m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![Multiple Airlines logo]()
$234
This Kiwi.com deal was found by Cheapflights users on 9/1. 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.
Tue 9/2210:29 am -
3 stops31h 39m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/1![Multiple Airlines logo]()
$235
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 September 7, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $195 (Kiwi.com) |
One-way from | $148 (Kiwi.com) |
Popular in | December |
Cheapest in | November |
Average price | $486 |
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 7,457,451 searches. Data last updated September 7, 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 Knoxville McGhee Tyson - SEA Seattle/Tacoma Intl
TYSSEA
Knoxville McGhee Tyson
Mon 10/26
9:42 pm-10:59 am
1 stop16h 17m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$148
KnoxvilleSeattle
TYS Knoxville McGhee Tyson - SEA Seattle/Tacoma Intl
TYSSEA
Knoxville McGhee Tyson
Tue 9/22
5:30 pm-11:40 pm
2 stops9h 10m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$174
KnoxvilleSeattle
TYS Knoxville McGhee Tyson - SEA Seattle/Tacoma Intl
TYSSEA
Knoxville McGhee Tyson
Fri 10/23
7:15 am-2:53 pm
1 stop10h 38m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$192
KnoxvilleSeattle
TYS Knoxville McGhee Tyson - SEA Seattle/Tacoma Intl
TYSSEA
Knoxville McGhee Tyson
Fri 10/9
2:38 pm-10:03 pm
1 stop10h 25m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$220
KnoxvilleSeattle
TYS Knoxville McGhee Tyson - SEA Seattle/Tacoma Intl
TYSSEA
Knoxville McGhee Tyson
Mon 9/14
4:18 pm-9:42 am
2 stops44h 24m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$268
KnoxvilleSeattle
TYS Knoxville McGhee Tyson - SEA Seattle/Tacoma Intl
TYSSEA
Knoxville McGhee Tyson
Tue 9/15
4:50 pm-9:31 pm
1 stop7h 41m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$291
Quickest round-trip
KnoxvilleSeattle
TYS Knoxville McGhee Tyson - SEA Seattle/Tacoma Intl
TYSSEA
Knoxville McGhee Tyson
Fri 9/18
5:40 am-9:50 am
1 stop7h 10m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$294
KnoxvilleSeattle
TYS Knoxville McGhee Tyson - SEA Seattle/Tacoma Intl
TYSSEA
Knoxville McGhee Tyson
Sat 10/17
6:40 am-1:55 pm
2 stops10h 15m
Seattle/Tacoma Intl
Sat 10/24
6:15 am-5:55 pm
2 stops8h 40m
$370
KnoxvilleSeattle
TYS Knoxville McGhee Tyson - SEA Seattle/Tacoma Intl
TYSSEA
Knoxville McGhee Tyson
Tue 12/15
2:40 pm-10:30 pm
2 stops10h 50m
Seattle/Tacoma Intl
Mon 1/4
12:15 am-12:20 pm
2 stops9h 05m
$421
KnoxvilleSeattle
TYS Knoxville McGhee Tyson - SEA Seattle/Tacoma Intl
TYSSEA
Knoxville McGhee Tyson
Thu 11/12
3:40 pm-11:00 pm
2 stops10h 20m
Seattle/Tacoma Intl
Mon 11/16
6:10 am-3:30 pm
1 stop6h 20m
$440
Showing 1-10 of 15 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 September.
| 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 |
- 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 73 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 $436). 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?
Airfare is below average for this route at the moment.
Knoxville to Seattle flights typically cost between $396 and $622 in October.The cheapest round-trip price found within the last 5 days was $195 on Multiple Airlines (Oct 22-Oct 31).
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 September 7, 2026.
Peruse reviews from past customers who have flown with Southwest,Alaska Airlines, andDelta 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.
Crew
8.6
Food
7.0
Overall
8.0
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentTim,Jul 2024
DEN - SEA
Crew
8.6
Food
7.0
Overall
8.0
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentTim,Jul 2024
DEN - SEA
Crew
8.6
Food
7.0
Overall
8.0
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentTim,Jul 2024
DEN - SEA
Crew
8.6
Food
7.0
Overall
8.0
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentTim,Jul 2024
DEN - SEA
Crew
8.6
Food
7.0
Overall
8.0
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentTim,Jul 2024
DEN - SEA
Crew
8.6
Food
7.0
Overall
8.0
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentTim,Jul 2024
DEN - 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.
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Book flights to Seattle if you plan to visit one of these locationsSeaTac
Renton
Tacoma
Lacey
Leavenworth
Olympia
Tukwila
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Snoqualmie
Puyallup
Lynnwood
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Kent
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Marysville
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Fife
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Knoxville and Seattle flights
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Top 5 airlines flying from Knoxville to Seattle
Discover the top 5 airlines that operate flights from Knoxville to Seattle. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated September 7, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$358 | Average$534 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$372 | Average$548 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$384 | Average$564 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$386 | Average$582 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$603 | Average$848 | FlexibilityNo cancel fee | On-time75% |