$175+ 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 8/9. Fares are subject to change and may not be available on all flights or dates of travel.
TYS — PDX
Jul 24 — Jul 311
Round-trip
1 adult, Economy
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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 June 24, 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 June 24, 2026.
This CheapOair deal was found by Cheapflights users on 6/20. 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.
Fri 7/178:19 pm
TYS
- PDX
1 stop23h 32m
Frontier
Thu 7/2312:20 pm
PDX
- TYS
1 stop28h 04m
Frontier
Deal found 6/20![Frontier logo]()
$348
This United Airlines deal was found by Cheapflights users on 6/22. 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.
Sat 9/56:02 pm
TYS
- PDX
1 stop7h 48m
United Airlines
Sat 9/128:25 am
PDX
- TYS
1 stop8h 59m
United Airlines
Deal found 6/22![United Airlines logo]()
$355
This United Airlines deal was found by Cheapflights users on 6/19. 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 8/184:50 pm
TYS
- PDX
1 stop7h 15m
United Airlines
Tue 8/257:16 am
PDX
- TYS
2 stops10h 08m
United Airlines
Deal found 6/19![United Airlines logo]()
$360
This CheapOair deal was found by Cheapflights users on 6/19. 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.
Fri 7/108:19 pm
TYS
- PDX
1 stop23h 32m
Frontier
Thu 7/1612:20 pm
PDX
- TYS
1 stop28h 04m
Frontier
Deal found 6/19![Frontier logo]()
$364
This American Airlines deal was found by Cheapflights users on 6/22. 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 8/16:10 pm
TYS
- PDX
1 stop8h 45m
American Airlines
Tue 8/1111:58 am
PDX
- TYS
1 stop8h 20m
American Airlines
Deal found 6/22![American Airlines logo]()
$370
This American Airlines deal was found by Cheapflights users on 6/19. 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 7/225:31 pm
TYS
- PDX
1 stop10h 24m
American Airlines
Wed 7/299:47 pm
PDX
- TYS
1 stop7h 44m
American Airlines
Deal found 6/19![American Airlines logo]()
$373
This CheapOair deal was found by Cheapflights users on 6/21. 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.
Wed 7/88:19 pm
TYS
- PDX
1 stop23h 32m
Frontier
Thu 7/1612:20 pm
PDX
- TYS
1 stop28h 04m
Frontier
Deal found 6/21![Frontier logo]()
$376
This United Airlines deal was found by Cheapflights users on 6/22. 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 10/76:00 am
TYS
- PDX
1 stop8h 33m
United Airlines
Sat 10/1010:43 am
PDX
- TYS
1 stop7h 17m
United Airlines
Deal found 6/22![United Airlines logo]()
$383
This Delta deal was found by Cheapflights users on 6/23. 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 10/283:55 pm
TYS
- PDX
1 stop9h 31m
Delta
Mon 11/211:39 am
PDX
- TYS
1 stop8h 23m
Delta
Deal found 6/23![Delta logo]()
$384
This Delta deal was found by Cheapflights users on 6/21. 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 7/226:36 pm
TYS
- PDX
1 stop7h 42m
Delta
Wed 7/2910:55 pm
PDX
- TYS
1 stop7h 41m
Delta
Deal found 6/21![Delta logo]()
$387
This CheapOair deal was found by Cheapflights users on 6/19. 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.
Fri 7/38:32 pm
TYS
- PDX
1 stop23h 25m
Frontier
Tue 7/75:16 pm
PDX
- TYS
1 stop23h 08m
Frontier
Deal found 6/19![Frontier logo]()
$388
This Southwest deal was found by Cheapflights users on 6/19. 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 8/185:30 pm
TYS
- PDX
2 stops8h 40m
Southwest
Tue 8/255:50 am
PDX
- TYS
2 stops10h 05m
Southwest
Deal found 6/19![Southwest logo]()
$395
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 June 24, 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 June 24, 2026.
This United Airlines deal was found by Cheapflights users on 6/19. 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 8/184:50 pm
TYS
- PDX
1 stop7h 15m
United Airlines
Tue 8/257:16 am
PDX
- TYS
2 stops10h 08m
United Airlines
Deal found 6/19![United Airlines logo]()
$360
This Delta deal was found by Cheapflights users on 6/20. 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 7/175:23 pm
TYS
- PDX
1 stop7h 25m
Delta
Wed 7/2910:55 pm
PDX
- TYS
1 stop7h 41m
Delta
Deal found 6/20![Delta logo]()
$436
This Southwest deal was found by Cheapflights users on 6/21. 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 8/245:45 pm
TYS
- PDX
2 stops8h 20m
Southwest
Fri 8/286:15 am
PDX
- TYS
2 stops10h 40m
Southwest
Deal found 6/21![Southwest logo]()
$445
This United Airlines deal was found by Cheapflights users on 6/21. 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.
Mon 8/244:50 pm
TYS
- PDX
1 stop7h 15m
United Airlines
Fri 8/2810:50 am
PDX
- TYS
2 stops10h 09m
United Airlines
Deal found 6/21![United Airlines logo]()
$472
This Delta deal was found by Cheapflights users on 6/20. 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.
Thu 8/206:25 pm
TYS
- PDX
1 stop7h 55m
Delta
Thu 8/275:30 am
PDX
- TYS
2 stops8h 49m
Delta
Deal found 6/20![Delta logo]()
$523
This United Airlines deal was found by Cheapflights users on 6/23. 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.
Sat 7/46:00 am
TYS
- PDX
2 stops12h 09m
United Airlines
Wed 7/812:50 pm
PDX
- TYS
1 stop6h 29m
United Airlines
Deal found 6/23![United Airlines logo]()
$491
This United Airlines deal was found by Cheapflights users on 6/20. 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.
Sat 9/59:45 am
TYS
- PDX
2 stops14h 20m
United Airlines
Sat 9/127:15 pm
PDX
- TYS
2 stops11h 42m
United Airlines
Deal found 6/20![United Airlines logo]()
$526
This United Airlines deal was found by Cheapflights users on 6/23. 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 9/107:00 am
TYS
- PDX
1 stop7h 28m
United Airlines
Sun 9/1311:02 pm
PDX
- TYS
2 stops12h 35m
United Airlines
Deal found 6/23![United Airlines logo]()
$550
This United Airlines deal was found by Cheapflights users on 6/21. 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.
Mon 7/206:00 am
TYS
- PDX
1 stop8h 38m
United Airlines
Tue 8/410:40 pm
PDX
- TYS
2 stops12h 47m
United Airlines
Deal found 6/21![United Airlines logo]()
$551
This United Airlines deal was found by Cheapflights users on 6/20. 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 9/99:45 am
TYS
- PDX
2 stops12h 33m
United Airlines
Thu 9/178:25 am
PDX
- TYS
1 stop8h 59m
United Airlines
Deal found 6/20![United Airlines logo]()
$554
Last-minute flights from Knoxville to PortlandDiscover last-minute flight deals from Knoxville to Portland. Data last updated June 24, 2026 and is based on user searches.
Discover last-minute flight deals from Knoxville to Portland. Data last updated June 24, 2026 and is based on user searches.
This CheapOair deal was found by Cheapflights users on 6/19. 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.
Fri 7/38:32 pm
TYS
- PDX
1 stop23h 25m
Frontier
Tue 7/75:16 pm
PDX
- TYS
1 stop23h 08m
Frontier
Deal found 6/19![Frontier logo]()
$388
This CheapOair deal was found by Cheapflights users on 6/21. 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.
Wed 7/88:19 pm
TYS
- PDX
1 stop23h 32m
Frontier
Thu 7/1612:20 pm
PDX
- TYS
1 stop28h 04m
Frontier
Deal found 6/21![Frontier logo]()
$376
This CheapOair deal was found by Cheapflights users on 6/19. 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.
Fri 7/108:19 pm
TYS
- PDX
1 stop23h 32m
Frontier
Thu 7/1612:20 pm
PDX
- TYS
1 stop28h 04m
Frontier
Deal found 6/19![Frontier logo]()
$364
This American Airlines deal was found by Cheapflights users on 6/23. 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.
Thu 7/165:31 pm
TYS
- PDX
1 stop10h 24m
American Airlines
Mon 7/2712:45 am
PDX
- TYS
1 stop9h 08m
American Airlines
Deal found 6/23![American Airlines logo]()
$436
This CheapOair deal was found by Cheapflights users on 6/20. 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.
Fri 7/178:19 pm
TYS
- PDX
1 stop23h 32m
Frontier
Thu 7/2312:20 pm
PDX
- TYS
1 stop28h 04m
Frontier
Deal found 6/20![Frontier logo]()
$348
This CheapOair deal was found by Cheapflights users on 6/21. 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.
Mon 7/208:19 pm
TYS
- PDX
1 stop23h 12m
Frontier
Tue 8/45:16 pm
PDX
- TYS
1 stop23h 08m
Frontier
Deal found 6/21![Frontier logo]()
$399
This American Airlines deal was found by Cheapflights users on 6/20. 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.
Mon 7/208:11 pm
TYS
- PDX
1 stop7h 44m
American Airlines
Tue 8/49:47 pm
PDX
- TYS
1 stop8h 56m
American Airlines
Deal found 6/20![American Airlines logo]()
$406
This American Airlines deal was found by Cheapflights users on 6/19. 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 7/225:31 pm
TYS
- PDX
1 stop10h 24m
American Airlines
Wed 7/299:47 pm
PDX
- TYS
1 stop7h 44m
American Airlines
Deal found 6/19![American Airlines logo]()
$373
This Delta deal was found by Cheapflights users on 6/21. 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 7/226:36 pm
TYS
- PDX
1 stop7h 42m
Delta
Wed 7/2910:55 pm
PDX
- TYS
1 stop7h 41m
Delta
Deal found 6/21![Delta logo]()
$387
This Kiwi.com deal was found by Cheapflights users on 6/21. 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 7/221:05 pm
TYS
- PDX
2 stops27h 53m
Multiple Airlines
Wed 7/295:21 pm
PDX
- TYS
1 stop17h 30m
Multiple Airlines
Deal found 6/21![Multiple Airlines logo]()
$427
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 June 24, 2026.
Search for one-way flight options from Knoxville to Portland. Find affordable one-way fares based on user searches. Data last updated June 24, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/23. 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 8/97:00 am
TYS
- PDX
1 stop12h 51m
Multiple Airlines
Deal found 6/23![Multiple Airlines logo]()
$175
This Delta deal was found by Cheapflights users on 6/21. 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 7/226:36 pm
TYS
- PDX
1 stop7h 42m
Delta
Deal found 6/21![Delta logo]()
$178
This CheapOair deal was found by Cheapflights users on 6/22. 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.
Mon 7/208:19 pm
TYS
- PDX
1 stop23h 12m
Frontier
Deal found 6/22![Frontier logo]()
$200
This CheapOair deal was found by Cheapflights users on 6/19. 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.
Fri 8/78:19 pm
TYS
- PDX
1 stop23h 32m
Frontier
Deal found 6/19![Frontier logo]()
$223
This Kiwi.com deal was found by Cheapflights users on 6/21. 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 7/221:05 pm
TYS
- PDX
2 stops27h 53m
Multiple Airlines
Deal found 6/21![Multiple Airlines logo]()
$230
This Southwest deal was found by Cheapflights users on 6/19. 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 8/75:45 pm
TYS
- PDX
2 stops8h 55m
Southwest
Deal found 6/19![Southwest logo]()
$234
This Kiwi.com deal was found by Cheapflights users on 6/22. 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 7/2012:40 pm
TYS
- PDX
3 stops30h 51m
Multiple Airlines
Deal found 6/22![Multiple Airlines logo]()
$248
This Kiwi.com deal was found by Cheapflights users on 6/19. 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 8/76:29 pm
TYS
- PDX
3 stops44h 06m
Multiple Airlines
Deal found 6/19![Multiple Airlines logo]()
$256
This Delta deal was found by Cheapflights users on 6/22. 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.
Sun 7/55:40 am
TYS
- PDX
1 stop7h 50m
Delta
Deal found 6/22![Delta logo]()
$289
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 June 24, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $348 (CheapOair) |
One-way from | $175 (Kiwi.com) |
Popular in | December |
Cheapest in | February |
Average price | $571 |
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 June 24, 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
Tue 8/18
4:50 pm-9:05 pm
1 stop7h 15m
Portland
Tue 8/25
7:16 am-8:24 pm
2 stops10h 08m
$360
Quickest round-trip
KnoxvillePortland
TYS - PDX
TYSPDX
Knoxville McGhee Tyson
Fri 7/17
5:23 pm-9:48 pm
1 stop7h 25m
Portland
Wed 7/29
10:55 pm-9:36 am
1 stop7h 41m
$436
KnoxvillePortland
TYS - PDX
TYSPDX
Knoxville McGhee Tyson
Mon 8/24
5:45 pm-11:05 pm
2 stops8h 20m
Portland
Fri 8/28
6:15 am-7:55 pm
2 stops10h 40m
$445
KnoxvillePortland
TYS - PDX
TYSPDX
Knoxville McGhee Tyson
Mon 8/24
4:50 pm-9:05 pm
1 stop7h 15m
Portland
Fri 8/28
10:50 am-11:59 pm
2 stops10h 09m
$472
KnoxvillePortland
TYS - PDX
TYSPDX
Knoxville McGhee Tyson
Sat 7/4
6:00 am-3:09 pm
2 stops12h 09m
Portland
Wed 7/8
12:50 pm-10:19 pm
1 stop6h 29m
$491
KnoxvillePortland
TYS - PDX
TYSPDX
Knoxville McGhee Tyson
Thu 8/20
6:25 pm-11:20 pm
1 stop7h 55m
Portland
Thu 8/27
5:30 am-5:19 pm
2 stops8h 49m
$523
KnoxvillePortland
TYS - PDX
TYSPDX
Knoxville McGhee Tyson
Sat 9/5
9:45 am-9:05 pm
2 stops14h 20m
Portland
Sat 9/12
7:15 pm-9:57 am
2 stops11h 42m
$526
KnoxvillePortland
TYS - PDX
TYSPDX
Knoxville McGhee Tyson
Thu 9/10
7:00 am-11:28 am
1 stop7h 28m
Portland
Sun 9/13
11:02 pm-2:37 pm
2 stops12h 35m
$550
KnoxvillePortland
TYS - PDX
TYSPDX
Knoxville McGhee Tyson
Mon 7/20
6:00 am-11:38 am
1 stop8h 38m
Portland
Tue 8/4
10:40 pm-2:27 pm
2 stops12h 47m
$551
KnoxvillePortland
TYS - PDX
TYSPDX
Knoxville McGhee Tyson
Wed 9/9
9:45 am-7:18 pm
2 stops12h 33m
Portland
Thu 9/17
8:25 am-8:24 pm
1 stop8h 59m
$554
Showing 1-10 of 18 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 June.
| 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 3 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, February is the cheapest month in which you can book a flight from Knoxville to Portland (average of $401). Flying from Knoxville to Portland in December is currently the most expensive (average of $625). 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 June 24, 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
Boarding
8.1
Comfort
7.8
Entertainment
7.8
Overall
7.8
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Food
7.2
Boarding
8.1
Comfort
7.8
Entertainment
7.8
Overall
7.8
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Food
7.2
Boarding
8.1
Comfort
7.8
Entertainment
7.8
Overall
7.8
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Food
7.2
Boarding
8.1
Comfort
7.8
Entertainment
7.8
Overall
7.8
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
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 locationsSeaside
Beaverton
Vancouver
Lincoln City
Longview
Lake Oswego
Hillsboro
Clackamas
Troutdale
Cannon Beach
Long Beach
McMinnville
The Dalles
Wilsonville
Depoe Bay
Stevenson
Tillamook
Astoria
Gresham
Silverton
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Alternative routes for Knoxville to Portland
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Knoxville and Portland flights
Browse other Knoxville and Portland flight options. Last updated on June 24, 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 June 24, 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 June 24, 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 June 24, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$279 | Average$475 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$345 | Average$536 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$353 | Average$594 | FlexibilityNo cancel fee | On-timeN/A |