$137+ Cheap flights from Knoxville to Portland (TYS - PDX)
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 5/29. Fares are subject to change and may not be available on all flights or dates of travel.
TYS — PDX
may. 30 — jun. 61
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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Cheapest flights from Knoxville to PortlandExplore the most affordable flight options available from Knoxville to Portland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on abril 30, 2026.
Explore the most affordable flight options available from Knoxville to Portland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on abril 30, 2026.
This CheapOair deal was found by Cheapflights users on 4/28. 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. 6/58:32 pm
TYS
- PDX
1 stop23h 14m
Frontier
mar. 6/95:20 pm
PDX
- TYS
1 stop23h 17m
Frontier
Deal found 4/28![Frontier logo]()
$261
This CheapOair deal was found by Cheapflights users on 4/29. 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
- PDX
1 stop23h 25m
Frontier
mar. 6/235:20 pm
PDX
- TYS
1 stop23h 17m
Frontier
Deal found 4/29![Frontier logo]()
$346
This Kiwi.com deal was found by Cheapflights users on 4/29. 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. 6/52:46 pm
TYS
- PDX
1 stop22h 34m
Multiple Airlines
dom. 6/74:06 pm
PDX
- TYS
2 stops26h 07m
Multiple Airlines
Deal found 4/29![Multiple Airlines logo]()
$355
This Kiwi.com deal was found by Cheapflights users on 4/28. 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. 5/287:00 am
TYS
- PDX
1 stop12h 46m
Multiple Airlines
jue. 6/412:35 pm
PDX
- TYS
1 stop27h 58m
Multiple Airlines
Deal found 4/28![Multiple Airlines logo]()
$361
This CheapOair deal was found by Cheapflights users on 4/29. 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.
jue. 10/154:27 pm
TYS
- PDX
1 stop27h 08m
Frontier
mié. 10/215:35 pm
PDX
- TYS
1 stop18h 54m
Frontier
Deal found 4/29![Frontier logo]()
$366
This Delta deal was found by Cheapflights users on 4/29. 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. 5/275:40 am
TYS
- PDX
1 stop7h 26m
Delta
mié. 6/39:39 pm
PDX
- TYS
1 stop8h 55m
Delta
Deal found 4/29![Delta logo]()
$375
This Kiwi.com deal was found by Cheapflights users on 4/28. 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. 6/16:00 am
TYS
- PDX
2 stops13h 46m
Multiple Airlines
mar. 6/95:20 pm
PDX
- TYS
1 stop23h 17m
Multiple Airlines
Deal found 4/28![Multiple Airlines logo]()
$377
This United Airlines deal was found by Cheapflights users on 4/27. 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. 8/128:48 am
TYS
- PDX
1 stop7h 15m
United Airlines
mié. 8/198:40 am
PDX
- TYS
2 stops9h 50m
United Airlines
Deal found 4/27![United Airlines logo]()
$380
This Kiwi.com deal was found by Cheapflights users on 4/28. 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. 7/38:32 pm
TYS
- PDX
1 stop23h 25m
Multiple Airlines
vie. 7/105:42 pm
PDX
- TYS
2 stops50h 14m
Multiple Airlines
Deal found 4/28![Multiple Airlines logo]()
$387
This Delta deal was found by Cheapflights users on 4/28. 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.
mar. 5/266:36 am
TYS
- PDX
1 stop8h 54m
Delta
lun. 6/19:39 pm
PDX
- TYS
1 stop8h 55m
Delta
Deal found 4/28![Delta logo]()
$390
This CheapOair deal was found by Cheapflights users on 4/28. 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.
lun. 6/18:32 pm
TYS
- PDX
1 stop23h 29m
Frontier
mar. 6/95:20 pm
PDX
- TYS
1 stop23h 17m
Frontier
Deal found 4/28![Frontier logo]()
$391
Best flights from Knoxville to PortlandDiscover carefully curated flight deals from Knoxville to Portland that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated abril 30, 2026.
Discover carefully curated flight deals from Knoxville to Portland that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated abril 30, 2026.
This CheapOair deal was found by Cheapflights users on 4/29. 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
- PDX
1 stop23h 25m
Frontier
mar. 6/235:20 pm
PDX
- TYS
1 stop23h 17m
Frontier
Deal found 4/29![Frontier logo]()
$346
This Delta deal was found by Cheapflights users on 4/28. 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. 8/216:15 pm
TYS
- PDX
1 stop8h 19m
Delta
mar. 8/259:45 pm
PDX
- TYS
1 stop8h 26m
Delta
Deal found 4/28![Delta logo]()
$416
This United Airlines deal was found by Cheapflights users on 4/27. 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.
vie. 8/214:56 pm
TYS
- PDX
1 stop6h 59m
United Airlines
mar. 8/258:40 am
PDX
- TYS
2 stops9h 50m
United Airlines
Deal found 4/27![United Airlines logo]()
$421
This Southwest deal was found by Cheapflights users on 4/27. 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. 8/121:55 pm
TYS
- PDX
2 stops11h 25m
Southwest
mié. 8/195:50 am
PDX
- TYS
2 stops10h 05m
Southwest
Deal found 4/27![Southwest logo]()
$429
This American Airlines deal was found by Cheapflights users on 4/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 7/274:07 pm
TYS
- PDX
1 stop10h 46m
American Airlines
lun. 8/1011:59 pm
PDX
- TYS
1 stop8h 15m
American Airlines
Deal found 4/30![American Airlines logo]()
$457
This Alaska Airlines deal was found by Cheapflights users on 4/29. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 8/251:46 pm
TYS
- PDX
1 stop9h 04m
Alaska Airlines
mié. 8/2610:37 am
PDX
- TYS
1 stop9h 41m
Alaska Airlines
Deal found 4/29![Alaska Airlines logo]()
$485
This American Airlines deal was found by Cheapflights users on 4/25. 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.
jue. 7/25:33 pm
TYS
- PDX
1 stop10h 17m
American Airlines
mié. 7/89:47 pm
PDX
- TYS
1 stop7h 44m
American Airlines
Deal found 4/25![American Airlines logo]()
$457
This United Airlines deal was found by Cheapflights users on 4/25. 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. 8/258:48 am
TYS
- PDX
1 stop7h 15m
United Airlines
mié. 8/268:20 am
PDX
- TYS
1 stop9h 08m
United Airlines
Deal found 4/25![United Airlines logo]()
$485
This Southwest deal was found by Cheapflights users on 4/25. 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. 8/134:50 pm
TYS
- PDX
1 stop8h 55m
Southwest
lun. 8/1711:30 pm
PDX
- TYS
2 stops9h 35m
Southwest
Deal found 4/25![Southwest logo]()
$502
This Southwest deal was found by Cheapflights users on 4/29. 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.
sáb. 6/205:15 pm
TYS
- PDX
2 stops9h 40m
Southwest
dom. 6/2811:30 pm
PDX
- TYS
2 stops9h 30m
Southwest
Deal found 4/29![Southwest logo]()
$555
Last-minute flights from Knoxville to PortlandDiscover last-minute flight deals from Knoxville to Portland. Data last updated abril 30, 2026 and is based on user searches.
Discover last-minute flight deals from Knoxville to Portland. Data last updated abril 30, 2026 and is based on user searches.
This CheapOair deal was found by Cheapflights users on 4/26. 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.
jue. 4/304:28 pm
TYS
- PDX
1 stop21h 35m
Frontier
sáb. 5/212:27 pm
PDX
- TYS
1 stop24h 06m
Frontier
Deal found 4/26![Frontier logo]()
$411
This American Airlines deal was found by Cheapflights users on 4/27. 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. 5/194:09 pm
TYS
- PDX
1 stop9h 41m
American Airlines
mar. 5/269:47 pm
PDX
- TYS
1 stop9h 49m
American Airlines
Deal found 4/27![American Airlines logo]()
$447
This Kiwi.com deal was found by Cheapflights users on 4/26. 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. 5/212:49 pm
TYS
- PDX
2 stops22h 31m
Multiple Airlines
dom. 5/2412:35 pm
PDX
- TYS
1 stop27h 49m
Multiple Airlines
Deal found 4/26![Multiple Airlines logo]()
$450
This Delta deal was found by Cheapflights users on 4/28. 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.
mar. 5/266:36 am
TYS
- PDX
1 stop8h 54m
Delta
lun. 6/19:39 pm
PDX
- TYS
1 stop8h 55m
Delta
Deal found 4/28![Delta logo]()
$390
This Delta deal was found by Cheapflights users on 4/27. 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.
mar. 5/266:36 am
TYS
- PDX
1 stop8h 54m
Delta
mar. 6/92:10 pm
PDX
- TYS
1 stop6h 44m
Delta
Deal found 4/27![Delta logo]()
$397
This American Airlines deal was found by Cheapflights users on 4/26. 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. 5/265:33 pm
TYS
- PDX
1 stop10h 17m
American Airlines
mar. 6/211:43 pm
PDX
- TYS
1 stop8h 30m
American Airlines
Deal found 4/26![American Airlines logo]()
$431
This Delta deal was found by Cheapflights users on 4/29. 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. 5/275:40 am
TYS
- PDX
1 stop7h 26m
Delta
mié. 6/39:39 pm
PDX
- TYS
1 stop8h 55m
Delta
Deal found 4/29![Delta logo]()
$375
This Kiwi.com deal was found by Cheapflights users on 4/28. 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. 5/287:00 am
TYS
- PDX
1 stop12h 46m
Multiple Airlines
jue. 6/412:35 pm
PDX
- TYS
1 stop27h 58m
Multiple Airlines
Deal found 4/28![Multiple Airlines logo]()
$361
This Kiwi.com deal was found by Cheapflights users on 4/26. 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. 5/287:00 am
TYS
- PDX
1 stop12h 46m
Multiple Airlines
lun. 6/110:31 am
PDX
- TYS
2 stops21h 10m
Multiple Airlines
Deal found 4/26![Multiple Airlines logo]()
$438
This Kiwi.com deal was found by Cheapflights users on 4/26. 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. 5/287:00 am
TYS
- PDX
1 stop12h 46m
Multiple Airlines
mar. 6/25:46 pm
PDX
- TYS
2 stops15h 26m
Multiple Airlines
Deal found 4/26![Multiple Airlines logo]()
$451
One-way flights from Knoxville to PortlandSearch for one-way flight options from Knoxville to Portland. Find affordable one-way fares based on user searches. Data last updated abril 30, 2026.
Search for one-way flight options from Knoxville to Portland. Find affordable one-way fares based on user searches. Data last updated abril 30, 2026.
This CheapOair deal was found by Cheapflights users on 4/29. 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. 5/298:19 pm
TYS
- PDX
1 stop23h 27m
Frontier
Deal found 4/29![Frontier logo]()
$137
This Kiwi.com deal was found by Cheapflights users on 4/29. 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. 6/58:32 pm
TYS
- PDX
1 stop23h 14m
Frontier
Deal found 4/29![Frontier logo]()
$151
This Kiwi.com deal was found by Cheapflights users on 4/29. 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. 6/510:03 pm
TYS
- PDX
2 stops39h 17m
Multiple Airlines
Deal found 4/29![Multiple Airlines logo]()
$163
This Delta deal was found by Cheapflights users on 4/29. 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. 5/275:40 am
TYS
- PDX
1 stop7h 26m
Delta
Deal found 4/29![Delta logo]()
$188
This Kiwi.com deal was found by Cheapflights users on 4/29. 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. 6/77:00 am
TYS
- PDX
2 stops31h 50m
Multiple Airlines
Deal found 4/29![Multiple Airlines logo]()
$191
This Kiwi.com deal was found by Cheapflights users on 4/29. 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. 5/287:00 am
TYS
- PDX
2 stops55h 50m
Multiple Airlines
Deal found 4/29![Multiple Airlines logo]()
$192
This Kiwi.com deal was found by Cheapflights users on 4/29. 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.
sáb. 6/65:56 pm
TYS
- PDX
2 stops19h 24m
Multiple Airlines
Deal found 4/29![Multiple Airlines logo]()
$197
This Kiwi.com deal was found by Cheapflights users on 4/29. 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. 6/49:20 pm
TYS
- PDX
3 stops46h 26m
Multiple Airlines
Deal found 4/29![Multiple Airlines logo]()
$200
This United Airlines deal was found by Cheapflights users on 4/29. 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. 6/45:57 pm
TYS
- PDX
1 stop8h 56m
United Airlines
Deal found 4/29![United Airlines logo]()
$203
This Kiwi.com deal was found by Cheapflights users on 4/29. 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.
mié. 6/31:02 pm
TYS
- PDX
3 stops24h 18m
Multiple Airlines
Deal found 4/29![Multiple Airlines logo]()
$207
This Kiwi.com deal was found by Cheapflights users on 4/29. 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. 5/317:00 am
TYS
- PDX
2 stops31h 50m
Multiple Airlines
Deal found 4/29![Multiple Airlines logo]()
$216
Find flight deals from Knoxville to Portland
Discover tips and strategies to find the most affordable flight options for your journey from Knoxville (TYS) to Portland (PDX). 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 abril 30, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $261 (CheapOair) |
One-way from | $137 (CheapOair) |
Popular in | December |
Cheapest in | August |
Average price | $463 |
Cheapflights Fare Finder
Customize your flight search to find flights from Knoxville to Portland 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 abril 30, 2026.
Use the filters below to find and compare flights from Knoxville to Portland that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
KnoxvillePortland
TYS - PDX
TYSPDX
Knoxville McGhee Tyson
vie. 6/19
8:32 pm-4:57 pm
1 stop23h 25m
Portland
mar. 6/23
5:20 pm-7:37 pm
1 stop23h 17m
$346
KnoxvillePortland
TYS - PDX
TYSPDX
Knoxville McGhee Tyson
vie. 8/21
6:15 pm-11:34 pm
1 stop8h 19m
Portland
mar. 8/25
9:45 pm-9:11 am
1 stop8h 26m
$416
KnoxvillePortland
TYS - PDX
TYSPDX
Knoxville McGhee Tyson
vie. 8/21
4:56 pm-8:55 pm
1 stop6h 59m
Portland
mar. 8/25
8:40 am-9:30 pm
2 stops9h 50m
$421
KnoxvillePortland
TYS - PDX
TYSPDX
Knoxville McGhee Tyson
mié. 8/12
1:55 pm-10:20 pm
2 stops11h 25m
Portland
mié. 8/19
5:50 am-6:55 pm
2 stops10h 05m
$429
KnoxvillePortland
TYS - PDX
TYSPDX
Knoxville McGhee Tyson
lun. 7/27
4:07 pm-11:53 pm
1 stop10h 46m
Portland
lun. 8/10
11:59 pm-11:14 am
1 stop8h 15m
$457
KnoxvillePortland
TYS - PDX
TYSPDX
Knoxville McGhee Tyson
jue. 7/2
5:33 pm-12:50 am
1 stop10h 17m
Portland
mié. 7/8
9:47 pm-8:31 am
1 stop7h 44m
$457
KnoxvillePortland
TYS - PDX
TYSPDX
Knoxville McGhee Tyson
mar. 8/25
1:46 pm-7:50 pm
1 stop9h 04m
Portland
mié. 8/26
10:37 am-11:18 pm
1 stop9h 41m
$485
Quickest round-trip
KnoxvillePortland
TYS - PDX
TYSPDX
Knoxville McGhee Tyson
mar. 8/25
8:48 am-1:03 pm
1 stop7h 15m
Portland
mié. 8/26
8:20 am-8:28 pm
1 stop9h 08m
$485
KnoxvillePortland
TYS - PDX
TYSPDX
Knoxville McGhee Tyson
jue. 8/13
4:50 pm-10:45 pm
1 stop8h 55m
Portland
lun. 8/17
11:30 pm-12:05 pm
2 stops9h 35m
$502
KnoxvillePortland
TYS - PDX
TYSPDX
Knoxville McGhee Tyson
sáb. 6/20
5:15 pm-11:55 pm
2 stops9h 40m
Portland
dom. 6/28
11:30 pm-12:00 pm
2 stops9h 30m
$555
Showing 1-10 of 22 resultsSorted by cheapest first
Compare providers for flights from Knoxville to Portland
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 Portland in April.
| 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 Knoxville-Portland flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Knoxville-Portland flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Knoxville-Portland flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Knoxville-Portland 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-Portland 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 Portland
Have a flexible travel schedule? Discover the best time to fly to Portland from Knoxville with our price prediction graph.
TYS-PDX
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 Portland
How far ahead should I book a flight from Knoxville to Portland?
Booking 37 days in advance of your planned departure date is, on average, the best time to get cheap flights from Knoxville to Portland. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
What is the cheapest month to book a flight from Knoxville to Portland?
Currently, August is the cheapest month in which you can book a flight from Knoxville to Portland (average of $321). Flying from Knoxville to Portland in December is currently the most expensive (average of $622). 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 Portland?
Reviews of airlines servicing Portland
Get insights into the airlines that provide service to Portland. 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 Portland. Reviews last updated abril 30, 2026.
Get a feel of what it's like to fly with Delta,United Airlines, andAmerican Airlines from Knoxville to Portland by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Food
7.2
Comfort
7.9
Entertainment
7.8
Overall
7.9
Crew
8.5
Boarding
8.1
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Food
7.2
Comfort
7.9
Entertainment
7.8
Overall
7.9
Crew
8.5
Boarding
8.1
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Food
7.2
Comfort
7.9
Entertainment
7.8
Overall
7.9
Crew
8.5
Boarding
8.1
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Food
7.2
Comfort
7.9
Entertainment
7.8
Overall
7.9
Crew
8.5
Boarding
8.1
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Related info for your journey
Find useful and relevant information for your journey from Knoxville to Portland. 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 Portland?
Book flights to Portland if you plan to visit one of these locationsBeaverton
Seaside
Vancouver
Lincoln City
Longview
Lake Oswego
Hillsboro
Clackamas
Troutdale
Cannon Beach
Long Beach
McMinnville
Tigard
The Dalles
Wilsonville
Depoe Bay
Stevenson
Tillamook
Astoria
Pacific City
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Knoxville and Portland flights
Browse other Knoxville and Portland flight options. Last updated on abril 30, 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 abril 30, 2026.
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Check out other popular destinations found by fellow travelers in 2026
Other flights to Portland
Explore flights to Portland departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on abril 30, 2026.
Top 3 airlines flying from Knoxville to Portland
Discover the top 3 airlines that operate flights from Knoxville to Portland. 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 abril 30, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$250 | Average$457 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$279 | Average$430 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$345 | Average$536 | FlexibilityNo cancel fee | On-time69% |