Cheap Flights from Seattle, WA to Knoxville, TN from $141

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On Cheapflightsplus.com you will find 420 connecting flights from Seattle to Knoxville. You can compare airfare deals from 6 airlines and multiple travel sites from $141, book and save on cheap plane tickets and last minute offers. Also check out SEA-TYS flight schedule to find best flight time, convenient departure and arrival airports.

Find One-Way and Round-Trip Seattle to Knoxville Flight Deals

To find the cheapest one way airline ticket select the date with the lowest price on the calendar below and click «Find Flights». To search for round-trip flight deals click on the link «Check prices for return flights» and select the date of the return flight. Cheapest flights in November: $141 (one-way), $242 (round-trip).

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Best Flights from Seattle to Knoxville Today

Take a look at the list of non stop flights and flights with layovers from Seattle to Knoxville with the lowest price of $141. Take a look at the list of flights with layovers from Seattle to Knoxville from $141. There’re no direct flights. The fastest connecting flight – 6h 33m.

Price	Departure	Arrival	Flight Duration	Airline	Flight
from $141 Find flight	15:00 Seattle Seattle-Tacoma Intl	16:35+1 день Knoxville Mc Ghee Tyson	22h 35m layover 16h 47m - Denver	Frontier Airlines	F94546 F92374
from $143 Find flight	06:25 Seattle Seattle-Tacoma Intl	16:29 Knoxville Mc Ghee Tyson	7h 4m layover 1h 27m - Denver	Frontier Airlines	F93406 F92374
from $154 Find flight	18:42 Seattle Seattle-Tacoma Intl	16:12+1 день Knoxville Mc Ghee Tyson	18h 30m layover 13h 10m - Minneapolis	Sun Country Airlines	SY286 G43063
from $167 Find flight	23:59 Seattle Seattle-Tacoma Intl	16:12+1 день Knoxville Mc Ghee Tyson	13h 13m layover 7h 53m - Minneapolis	Sun Country Airlines	SY290 G43062
from $182 Find flight	16:58 Seattle Seattle-Tacoma Intl	16:00+1 день Knoxville Mc Ghee Tyson	20h 2m layover 13h 29m - Las Vegas	Spirit Airlines	NK782 G462
from $184 Find flight	09:15 Seattle Seattle-Tacoma Intl	16:11+1 день Knoxville Mc Ghee Tyson	27h 56m layover 22h 38m - Minneapolis	Sun Country Airlines	SY282 G41416
from $207 Find flight	15:58 Seattle Seattle-Tacoma Intl	13:38+1 день Knoxville Mc Ghee Tyson	18h 40m layover 12h 19m - Las Vegas	Spirit Airlines	NK2328 G47
from $221 Find flight	06:00 Seattle Seattle-Tacoma Intl	13:24+1 день Knoxville Mc Ghee Tyson	28h 24m layover 21h 54m - Las Vegas	Spirit Airlines	NK2626 G47
from $193 Find flight	17:30 Seattle Seattle-Tacoma Intl	17:12+1 день Knoxville Mc Ghee Tyson	20h 42m layover 4h 36m - Las Vegas 8h 43m - Chicago	Spirit Airlines	NK1682 NK1053 G41430
from $206 Find flight	23:59 Seattle Seattle-Tacoma Intl	22:15+1 день Knoxville Mc Ghee Tyson	19h 16m layover 2h 35m - Minneapolis 9h 17m - Jacksonville	Sun Country Airlines	SY290 SY325 G41440
from $220 Find flight	15:58 Seattle Seattle-Tacoma Intl	17:20+1 день Knoxville Mc Ghee Tyson	22h 22m layover 6h 18m - Las Vegas 8h 42m - Chicago	Spirit Airlines	NK2328 NK2186 G43046
from $228 Find flight	15:58 Seattle Seattle-Tacoma Intl	17:18+1 день Knoxville Mc Ghee Tyson	22h 20m layover 6h 18m - Las Vegas 8h 41m - Chicago	Spirit Airlines	NK2328 NK2186 G43025
from $230 Find flight	09:10 Seattle Seattle-Tacoma Intl	22:15+1 день Knoxville Mc Ghee Tyson	34h 5m layover 17h 23m - Minneapolis 9h 17m - Jacksonville	Sun Country Airlines	SY282 SY325 G41440
from $231 Find flight	09:10 Seattle Seattle-Tacoma Intl	16:47+1 день Knoxville Mc Ghee Tyson	28h 37m layover 18h 47m - Minneapolis 2h 42m - Washington D.C.	Sun Country Airlines	SY282 SY1693 G41398
from $233 Find flight	15:20 Seattle Seattle-Tacoma Intl	11:42+1 день Knoxville Mc Ghee Tyson	17h 22m layover 6h 8m - Las Vegas 3h 19m - Minneapolis	Spirit Airlines	NK2328 SY778 G41428
from $233 Find flight	06:00 Seattle Seattle-Tacoma Intl	11:42+1 день Knoxville Mc Ghee Tyson	26h 42m layover 15h 28m - Las Vegas 3h 19m - Minneapolis	Spirit Airlines	NK2626 SY778 G41428

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*Departure and arrival times - local. Prices indicated for one-way flights. Information updated on August 08, 2025

Flight Schedule Seattle (Washington) to Knoxville (Tennessee)

Full flight schedule will help you in detecting at what time planes fly from Seattle to Knoxville. You can also specify the concrete flights and airlines on the route and how long the flight actually is. Use the calendar for today, tomorrow or other specific date as some flights are available only on certain days of the week.

Departure	Flight Details	Flight Duration	Price
00:34 — 11:41	00:34 — 06:20 AS576 Alaska Airlines Seattle — Dallas 2h 6m stop 08:26 — 11:41 AS4350 Alaska Airlines Dallas — Knoxville	8h 7m including layover	Find flight from$393
05:00 — 18:11	05:00 — 11:19 UA2473 United Airlines Seattle — Houston 3h 26m stop 14:45 — 18:11 UA4890 United Airlines Houston — Knoxville	10h 11m including layover	Find flight from$306
05:15 — 14:49	05:00 — 08:47 UA2269 United Airlines Seattle — Denver 1h 2m stop 09:55 — 14:41 UA2420 United Airlines Denver — Knoxville	6h 34m including layover	Find flight from$306
06:00 — 13:24 +1 day	06:00 — 08:31 NK2626 Spirit Airlines Seattle — Las Vegas 21h 54m stop 06:25 — 13:24 G47 Allegiant Air Las Vegas — Knoxville	28h 24m including layover	Find flight from$221
06:25 — 16:29	06:25 — 10:16 F93406 Frontier Airlines Seattle — Denver 1h 27m stop 11:41 — 16:35 F92374 Frontier Airlines Denver — Knoxville	7h 4m including layover	Find flight from$143
07:00 — 17:05	07:00 — 13:14 UA1617 United Airlines Seattle — Chicago 54m stop 14:08 — 17:05 UA5429 United Airlines Chicago — Knoxville	7h 5m including layover	Find flight from$303
07:00 — 18:38	07:00 — 13:14 UA1617 United Airlines Seattle — Chicago 2h 32m stop 15:46 — 18:38 UA454 United Airlines Chicago — Knoxville	8h 38m including layover	Find flight from$303
08:00 — 20:42	08:00 — 16:11 UA2398 United Airlines Seattle — Washington D.C. 2h 44m stop 18:55 — 20:42 UA4914 United Airlines Washington D.C. — Knoxville	9h 42m including layover	Find flight from$306
08:12 — 16:12 +1 day	08:12 — 13:30 SY1638 Sun Country Airlines Seattle — Minneapolis 23h 39m stop 13:09 — 16:12 G43062 Allegiant Air Minneapolis — Knoxville	29h including layover	Find flight from$235
09:15 — 16:11 +1 day	09:15 — 14:30 SY282 Sun Country Airlines Seattle — Minneapolis 22h 38m stop 13:08 — 16:11 G41416 Allegiant Air Minneapolis — Knoxville	27h 56m including layover	Find flight from$184
09:15 — 16:11 +1 day	09:15 — 14:30 SY282 Sun Country Airlines Seattle — Minneapolis 22h 38m stop 13:08 — 16:11 G43063 Allegiant Air Minneapolis — Knoxville	27h 56m including layover	Find flight from$336
10:50 — 22:07	10:50 — 17:02 AS429 Alaska Airlines Seattle — Chicago 2h 23m stop 19:25 — 22:07 AS4570 Alaska Airlines Chicago — Knoxville	8h 17m including layover	Find flight from$389
10:55 — 22:40	10:53 — 17:02 UA312 United Airlines Seattle — Chicago 2h 51m stop 19:55 — 22:40 UA2005 United Airlines Chicago — Knoxville	8h 45m including layover	Find flight from$306
11:13 — 22:28	11:13 — 14:59 UA1061 United Airlines Seattle — Denver 2h 27m stop 17:26 — 22:28 UA4798 United Airlines Denver — Knoxville	8h 15m including layover	Find flight from$306
12:30 — 23:58	11:10 — 17:13 AS592 Alaska Airlines Seattle — Dallas 2h 18m stop 20:51 — 23:58 AS4663 Alaska Airlines Dallas — Knoxville	8h 28m including layover	Find flight from$346
12:53 — 16:12 +1 day	12:53 — 18:10 SY1986 Sun Country Airlines Seattle — Minneapolis 18h 59m stop 13:09 — 16:12 G43063 Allegiant Air Minneapolis — Knoxville	24h 19m including layover	Find flight from$239
13:55 — 10:13 +1 day	13:55 — 20:10 UA1298 United Airlines Seattle — Chicago 11h 8m stop 07:18 — 10:13 UA5726 United Airlines Chicago — Knoxville	17h 18m including layover	Find flight from$405
13:55 — 13:25 +1 day	13:55 — 20:10 UA1298 United Airlines Seattle — Chicago 14h 25m stop 10:35 — 13:25 UA4194 United Airlines Chicago — Knoxville	20h 30m including layover	Find flight from$405
14:24 — 15:04 +1 day	14:24 — 18:15 UA2859 United Airlines Seattle — Denver 16h stop 10:15 — 15:04 UA2420 United Airlines Denver — Knoxville	21h 40m including layover	Find flight from$405
15:00 — 16:35 +1 day	15:00 — 18:54 F94546 Frontier Airlines Seattle — Denver 16h 47m stop 11:41 — 16:35 F92374 Frontier Airlines Denver — Knoxville	22h 35m including layover	Find flight from$141
15:58 — 13:38 +1 day	15:20 — 17:51 NK2328 Spirit Airlines Seattle — Las Vegas 12h 19m stop 06:25 — 13:24 G47 Allegiant Air Las Vegas — Knoxville	18h 40m including layover	Find flight from$207
16:55 — 13:25 +1 day	16:55 — 22:55 UA1951 United Airlines Seattle — Chicago 11h 40m stop 10:35 — 13:25 UA4194 United Airlines Chicago — Knoxville	17h 30m including layover	Find flight from$405
16:58 — 16:00 +1 day	16:58 — 19:36 NK782 Spirit Airlines Seattle — Las Vegas 13h 29m stop 09:05 — 16:00 G462 Allegiant Air Las Vegas — Knoxville	20h 2m including layover	Find flight from$182
17:30 — 13:38 +1 day	17:30 — 19:58 NK1682 Spirit Airlines Seattle — Las Vegas 10h 47m stop 06:45 — 13:38 G47 Allegiant Air Las Vegas — Knoxville	17h 8m including layover	Find flight from$216
18:42 — 16:12 +1 day	18:18 — 23:35 SY286 Sun Country Airlines Seattle — Minneapolis 13h 10m stop 13:08 — 16:11 G43063 Allegiant Air Minneapolis — Knoxville	18h 30m including layover	Find flight from$154
18:42 — 16:11 +1 day	18:42 — 23:59 SY286 Sun Country Airlines Seattle — Minneapolis 13h 9m stop 13:08 — 16:11 G41416 Allegiant Air Minneapolis — Knoxville	18h 29m including layover	Find flight from$162
19:02 — 22:22 +1 day	19:00 — 22:40 UA1218 United Airlines Seattle — Denver 18h 27m stop 17:28 — 22:30 UA4774 United Airlines Denver — Knoxville	24h 20m including layover	Find flight from$399
19:48 — 16:29 +1 day	19:48 — 23:40 F91176 Frontier Airlines Seattle — Denver 12h 1m stop 11:41 — 16:29 F92374 Frontier Airlines Denver — Knoxville	17h 41m including layover	Find flight from$292
22:15 — 10:27 +1 day	22:15 — 06:12 UA2402 United Airlines Seattle — Washington D.C. 2h 33m stop 08:45 — 10:27 UA4257 United Airlines Washington D.C. — Knoxville	9h 12m including layover	Find flight from$306
22:15 — 14:33 +1 day	22:15 — 06:12 UA2402 United Airlines Seattle — Washington D.C. 6h 43m stop 12:55 — 14:33 UA4282 United Airlines Washington D.C. — Knoxville	13h 18m including layover	Find flight from$379
23:59 — 16:11 +1 day	23:59 — 05:13 SY290 Sun Country Airlines Seattle — Minneapolis 7h 55m stop 13:08 — 16:11 G41416 Allegiant Air Minneapolis — Knoxville	13h 12m including layover	Find flight from$162
23:59 — 16:12 +1 day	23:59 — 05:16 SY290 Sun Country Airlines Seattle — Minneapolis 7h 53m stop 13:09 — 16:12 G43062 Allegiant Air Minneapolis — Knoxville	13h 13m including layover	Find flight from$167

Departure	Arrival	Flight Details	Flight Time	Price
		stop stop	including layover	Find flight from$

*Departure and arrival times - local. Updated on August 8, 2025

Flight Information

Below we will explain in detail what the flights cost on the destination from Seattle to Knoxville depends on and how to choose the most interesting flight option for you.

Distance between Seattle and Knoxville is 3395 miles. Time difference between the cities is 3h. Airplanes depart 00:20 to 23:59 from 3 Seattle airports and arrive 00:20 to 23:59 to 1 Knoxville airport. Average flight time is 18h 17m.

The fastest flight 6h 33m
Average flight time 18h 17m
The earliest flight 00:20
The latest flight 23:59
Distance 2110 ml

The cheapest months to travel to Knoxville are may (from 141 $), june (from 143 $), august (from 154 $).

The most expensive months are november (from 672 $), january (from 476 $), february (from 469 $).

What is the lowest airfare Seattle to Knoxville?

The cheapest plane ticket found by our users is $141. This airfare is for economy class on one-way F94546 flight by Frontier Airlines for May 24, 2025 which leaves Seattle-Tacoma Intl in Seattle at 15:00 am and arrives at Knoxville Mc Ghee Tyson at 16:35.

Economy class

$141

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Business class

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First class

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Popular Airlines on the Route

The flight Seattle — Knoxville is served by 6 regular airlines and 3 low-cost airlines. Most of the flights on this route are operated by Alaska Airlines - 49 departures per week at the price of from $ 346 . And the most expensive tickets are offered by Alaska Airlines airline - from $ 1293.

Direct flights

There’re no direct flights on this route. Try flights with stops.

Connecting Flights

There are 420 flights with layovers on the route. The fastest connecting flight is UA757 by United Airlines takes 6h 33m and the cheapest is F94546 by Frontier Airlines for $141.

AS - Alaska Airlines

from $346

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F9 - Frontier Airlines

from $141

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SY - Sun Country Airlines

from $154

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HA - Hawaiian Airlines

from $428

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UA - United Airlines

from $303

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NK - Spirit Airlines

from $182

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See more connecting flights

Airports

You can fly from Seattle to Knoxville from 3 airports (Boeing Field International Airport, Seattle-Tacoma Intl, Kenmore Air Harbor SPB).

Seattle airports

Boeing Field International Airport-BFI

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Seattle-Tacoma Intl-SEA

from $141
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Kenmore Air Harbor SPB-LKE

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Knoxville airports

Mc Ghee Tyson-TYS

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Airplanes

There are flights to Knoxville from Seattle by 6 airlines that use 0 aircraft brands. They range from huge modern airplanes to small-sized.

Top Domestic Destinations from Seattle

You may also consider searching for discounted plane tickets to some other popular places from Seattle within United States.

Seattle — Washington D.C.

from $78

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Seattle — Las Vegas

from $62

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Seattle — New York

from $180

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Seattle — Chicago

from $73

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Seattle — Phoenix

from $67

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Seattle — San Diego

from $74

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Seattle — Los Angeles

from $53

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Seattle — Denver

from $243

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Seattle — Dallas

from $72

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Seattle — Boston

from $63

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Top International Destinations from Seattle

Our state-of-the art metasearch will definitely provide you with the best airfare on international flights. We’re proud to partner with many reliable travel suppliers located outside the US what gives us an opportunity to offer the most competitive prices on far destinations.

Seattle — Tokyo

from $77

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Seattle — London

from $70

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Seattle — Vancouver

from $57

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Seattle — Cancun

from $63

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Seattle — Paris

from $66

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Seattle — Toronto

from $64

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Seattle — Calgary

from $76

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Seattle — Mumbai

from $80

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Seattle — Montreal

from $68

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Seattle — Amsterdam

from $64

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How to book a plane ticket yourself?

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That's it — you will receive an email with your e-ticket usually within 10 minutes after your flight is confirmed. Please, print the e-ticket and have it with you at the airport. You would need to have only a passport and/or a required form of ID to travel. Please, check your Visa requirements if you travel outside of the United States or Canada.
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