$176+ 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 9/24. Fares are subject to change and may not be available on all flights or dates of travel.
TYS — PDX
Aug 29 — Sep 51
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 July 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 July 30, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/25. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/256:30 am
TYS
- PDX
1 stop13h 05m
Multiple Airlines
Thu 10/299:03 pm
PDX
- TYS
2 stops20h 02m
Multiple Airlines
Deal found 7/25![Multiple Airlines logo]()
$331
This United Airlines deal was found by Cheapflights users on 7/26. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/57:00 am
TYS
- PDX
1 stop7h 28m
United Airlines
Sat 9/511:02 pm
PDX
- TYS
1 stop7h 55m
United Airlines
Deal found 7/26![United Airlines logo]()
$363
This American Airlines deal was found by Cheapflights users on 7/26. 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.
Fri 10/303:41 pm
TYS
- PDX
1 stop8h 03m
American Airlines
Mon 11/211:57 am
PDX
- TYS
1 stop6h 47m
American Airlines
Deal found 7/26![American Airlines logo]()
$364
This United Airlines deal was found by Cheapflights users on 7/30. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/121:53 pm
TYS
- PDX
2 stops10h 12m
United Airlines
Tue 9/2910:43 am
PDX
- TYS
1 stop7h 06m
United Airlines
Deal found 7/30![United Airlines logo]()
$368
This Southwest deal was found by Cheapflights users on 7/25. 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.
Fri 9/114:50 pm
TYS
- PDX
1 stop7h 25m
Southwest
Mon 9/1411:30 pm
PDX
- TYS
2 stops9h 35m
Southwest
Deal found 7/25![Southwest logo]()
$369
This American Airlines deal was found by Cheapflights users on 7/26. 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.
Tue 9/15:15 am
TYS
- PDX
1 stop9h 33m
American Airlines
Tue 9/811:09 pm
PDX
- TYS
1 stop8h 41m
American Airlines
Deal found 7/26![American Airlines logo]()
$371
This Southwest deal was found by Cheapflights users on 7/30. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/126:50 am
TYS
- PDX
2 stops10h 10m
Southwest
Tue 9/297:05 am
PDX
- TYS
2 stops8h 55m
Southwest
Deal found 7/30![Southwest logo]()
$373
This Delta deal was found by Cheapflights users on 7/25. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/115:45 pm
TYS
- PDX
1 stop7h 02m
Delta
Mon 9/1410:57 pm
PDX
- TYS
1 stop7h 32m
Delta
Deal found 7/25![Delta logo]()
$374
This American Airlines deal was found by Cheapflights users on 7/26. 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.
Sat 9/510:57 am
TYS
- PDX
2 stops10h 03m
American Airlines
Sat 9/126:00 am
PDX
- TYS
1 stop7h 42m
American Airlines
Deal found 7/26![American Airlines logo]()
$377
This Southwest deal was found by Cheapflights users on 7/26. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/316:40 am
TYS
- PDX
2 stops14h 25m
Southwest
Wed 11/46:55 am
PDX
- TYS
2 stops9h 50m
Southwest
Deal found 7/26![Southwest logo]()
$379
This American Airlines deal was found by Cheapflights users on 7/29. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/206:03 am
TYS
- PDX
1 stop9h 45m
American Airlines
Thu 8/2710:59 pm
PDX
- TYS
1 stop7h 44m
American Airlines
Deal found 7/29![American Airlines logo]()
$383
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 July 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 July 30, 2026.
This United Airlines deal was found by Cheapflights users on 7/25. 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.
Sat 9/127:15 am
TYS
- PDX
2 stops10h 50m
United Airlines
Wed 9/167:02 am
PDX
- TYS
1 stop6h 56m
United Airlines
Deal found 7/25![United Airlines logo]()
$368
This Southwest deal was found by Cheapflights users on 7/28. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/93:40 pm
TYS
- PDX
2 stops11h 30m
Southwest
Tue 11/176:20 am
PDX
- TYS
1 stop6h 10m
Southwest
Deal found 7/28![Southwest logo]()
$368
This American Airlines deal was found by Cheapflights users on 7/27. 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.
Thu 9/105:35 pm
TYS
- PDX
1 stop8h 48m
American Airlines
Sun 9/1311:08 pm
PDX
- TYS
1 stop8h 42m
American Airlines
Deal found 7/27![American Airlines logo]()
$415
This Delta deal was found by Cheapflights users on 7/29. 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.
Wed 10/2812:06 pm
TYS
- PDX
2 stops12h 50m
Delta
Mon 11/211:46 am
PDX
- TYS
1 stop8h 16m
Delta
Deal found 7/29![Delta logo]()
$461
This United Airlines deal was found by Cheapflights users on 7/26. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/57:00 am
TYS
- PDX
2 stops11h 05m
United Airlines
Sat 9/511:02 pm
PDX
- TYS
1 stop7h 55m
United Airlines
Deal found 7/26![United Airlines logo]()
$368
This Southwest deal was found by Cheapflights users on 7/30. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/126:50 am
TYS
- PDX
2 stops10h 10m
Southwest
Tue 9/297:05 am
PDX
- TYS
2 stops8h 55m
Southwest
Deal found 7/30![Southwest logo]()
$373
This Southwest deal was found by Cheapflights users on 7/29. 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.
Fri 8/214:50 pm
TYS
- PDX
1 stop7h 25m
Southwest
Mon 8/2411:30 pm
PDX
- TYS
2 stops9h 35m
Southwest
Deal found 7/29![Southwest logo]()
$409
This United Airlines deal was found by Cheapflights users on 7/25. 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.
Fri 8/287:00 am
TYS
- PDX
1 stop7h 28m
United Airlines
Fri 9/411:02 pm
PDX
- TYS
1 stop7h 55m
United Airlines
Deal found 7/25![United Airlines logo]()
$445
This Southwest deal was found by Cheapflights users on 7/29. 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.
Wed 12/164:10 pm
TYS
- PDX
1 stop9h 00m
Southwest
Wed 12/306:20 am
PDX
- TYS
2 stops9h 20m
Southwest
Deal found 7/29![Southwest logo]()
$409
This Southwest deal was found by Cheapflights users on 7/27. 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.
Thu 9/104:50 pm
TYS
- PDX
2 stops9h 30m
Southwest
Sun 9/137:40 am
PDX
- TYS
1 stop6h 35m
Southwest
Deal found 7/27![Southwest logo]()
$420
Last-minute flights from Knoxville to PortlandDiscover last-minute flight deals from Knoxville to Portland. Data last updated July 30, 2026 and is based on user searches.
Discover last-minute flight deals from Knoxville to Portland. Data last updated July 30, 2026 and is based on user searches.
This CheapOair deal was found by Cheapflights users on 7/28. 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.
Fri 8/78:19 pm
TYS
- PDX
1 stop23h 32m
Frontier
Tue 8/115:16 pm
PDX
- TYS
1 stop23h 08m
Frontier
Deal found 7/28![Frontier logo]()
$386
This Kiwi.com deal was found by Cheapflights users on 7/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/167:00 am
TYS
- PDX
1 stop12h 51m
Multiple Airlines
Wed 8/195:56 pm
PDX
- TYS
1 stop16h 53m
Multiple Airlines
Deal found 7/27![Multiple Airlines logo]()
$392
This Kiwi.com deal was found by Cheapflights users on 7/28. 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.
Mon 8/175:54 pm
TYS
- PDX
2 stops26h 17m
Multiple Airlines
Sat 8/2212:20 pm
PDX
- TYS
1 stop22h 29m
Multiple Airlines
Deal found 7/28![Multiple Airlines logo]()
$398
This American Airlines deal was found by Cheapflights users on 7/29. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/206:03 am
TYS
- PDX
1 stop9h 45m
American Airlines
Thu 8/2710:59 pm
PDX
- TYS
1 stop7h 44m
American Airlines
Deal found 7/29![American Airlines logo]()
$383
This Kiwi.com deal was found by Cheapflights users on 7/29. 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.
Fri 8/218:30 am
TYS
- PDX
2 stops11h 51m
Multiple Airlines
Sun 8/231:47 pm
PDX
- TYS
1 stop28h 59m
Multiple Airlines
Deal found 7/29![Multiple Airlines logo]()
$402
This Delta deal was found by Cheapflights users on 7/29. 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.
Fri 8/215:22 pm
TYS
- PDX
1 stop7h 47m
Delta
Mon 8/2411:20 pm
PDX
- TYS
1 stop8h 00m
Delta
Deal found 7/29![Delta logo]()
$404
This United Airlines deal was found by Cheapflights users on 7/29. 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.
Sat 8/229:00 am
TYS
- PDX
1 stop9h 01m
United Airlines
Sat 8/2211:02 pm
PDX
- TYS
1 stop7h 55m
United Airlines
Deal found 7/29![United Airlines logo]()
$363
This Southwest deal was found by Cheapflights users on 7/29. 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.
Sat 8/221:55 pm
TYS
- PDX
1 stop7h 30m
Southwest
Sat 8/2211:30 pm
PDX
- TYS
2 stops9h 55m
Southwest
Deal found 7/29![Southwest logo]()
$368
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 July 30, 2026.
Search for one-way flight options from Knoxville to Portland. Find affordable one-way fares based on user searches. Data last updated July 30, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/25. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/247:00 am
TYS
- PDX
1 stop12h 35m
Multiple Airlines
Deal found 7/25![Multiple Airlines logo]()
$176
This Kiwi.com deal was found by Cheapflights users on 7/28. 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.
Fri 8/146:30 am
TYS
- PDX
2 stops13h 24m
Multiple Airlines
Deal found 7/28![Multiple Airlines logo]()
$177
This Southwest deal was found by Cheapflights users on 7/28. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/51:55 pm
TYS
- PDX
1 stop7h 35m
Southwest
Deal found 7/28![Southwest logo]()
$182
This United Airlines deal was found by Cheapflights users on 7/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/57:00 am
TYS
- PDX
2 stops11h 05m
United Airlines
Deal found 7/28![United Airlines logo]()
$187
This American Airlines deal was found by Cheapflights users on 7/26. 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.
Sat 9/510:57 am
TYS
- PDX
2 stops10h 03m
American Airlines
Deal found 7/26![American Airlines logo]()
$196
This American Airlines deal was found by Cheapflights users on 7/26. 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.
Fri 9/184:46 pm
TYS
- PDX
1 stop9h 42m
American Airlines
Deal found 7/26![American Airlines logo]()
$223
This Kiwi.com deal was found by Cheapflights users on 7/28. 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.
Sun 8/167:00 am
TYS
- PDX
1 stop12h 51m
Multiple Airlines
Deal found 7/28![Multiple Airlines logo]()
$228
This Kiwi.com deal was found by Cheapflights users on 7/28. 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.
Mon 8/176:30 am
TYS
- PDX
2 stops13h 24m
Multiple Airlines
Deal found 7/28![Multiple Airlines logo]()
$232
This Kiwi.com deal was found by Cheapflights users on 7/26. 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.
Fri 9/181:54 pm
TYS
- PDX
3 stops48h 49m
Multiple Airlines
Deal found 7/26![Multiple Airlines logo]()
$233
This United Airlines deal was found by Cheapflights users on 7/25. 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.
Sun 11/225:05 pm
TYS
- PDX
1 stop9h 04m
United Airlines
Deal found 7/25![United Airlines logo]()
$234
This Kiwi.com deal was found by Cheapflights users on 7/28. 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.
Thu 8/137:00 am
TYS
- PDX
1 stop12h 51m
Multiple Airlines
Deal found 7/28![Multiple Airlines logo]()
$235
This deal was found by Cheapflights users on 7/28. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/244:53 pm
TYS
- PDX
1 stop9h 00m
United Airlines
Deal found 7/28![United Airlines logo]()
$237
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 July 30, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $331 (Kiwi.com) |
One-way from | $176 (Kiwi.com) |
Popular in | December |
Cheapest in | February |
Average price | $553 |
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 July 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
Sat 9/12
7:15 am-3:05 pm
2 stops10h 50m
Portland
Wed 9/16
7:02 am-4:58 pm
1 stop6h 56m
$368
KnoxvillePortland
TYS - PDX
TYSPDX
Knoxville McGhee Tyson
Mon 11/9
3:40 pm-12:10 am
2 stops11h 30m
Portland
Tue 11/17
6:20 am-3:30 pm
1 stop6h 10m
$368
KnoxvillePortland
TYS - PDX
TYSPDX
Knoxville McGhee Tyson
Sat 9/5
7:00 am-3:05 pm
2 stops11h 05m
Portland
Sat 9/5
11:02 pm-9:57 am
1 stop7h 55m
$368
KnoxvillePortland
TYS - PDX
TYSPDX
Knoxville McGhee Tyson
Sat 9/12
6:50 am-2:00 pm
2 stops10h 10m
Portland
Tue 9/29
7:05 am-7:00 pm
2 stops8h 55m
$373
KnoxvillePortland
TYS - PDX
TYSPDX
Knoxville McGhee Tyson
Fri 8/21
4:50 pm-9:15 pm
1 stop7h 25m
Portland
Mon 8/24
11:30 pm-12:05 pm
2 stops9h 35m
$409
KnoxvillePortland
TYS - PDX
TYSPDX
Knoxville McGhee Tyson
Wed 12/16
4:10 pm-10:10 pm
1 stop9h 00m
Portland
Wed 12/30
6:20 am-6:40 pm
2 stops9h 20m
$409
KnoxvillePortland
TYS - PDX
TYSPDX
Knoxville McGhee Tyson
Thu 9/10
5:35 pm-11:23 pm
1 stop8h 48m
Portland
Sun 9/13
11:08 pm-10:50 am
1 stop8h 42m
$415
KnoxvillePortland
TYS - PDX
TYSPDX
Knoxville McGhee Tyson
Thu 9/10
4:50 pm-11:20 pm
2 stops9h 30m
Portland
Sun 9/13
7:40 am-5:15 pm
1 stop6h 35m
$420
Quickest round-trip
KnoxvillePortland
TYS - PDX
TYSPDX
Knoxville McGhee Tyson
Fri 8/28
7:00 am-11:28 am
1 stop7h 28m
Portland
Fri 9/4
11:02 pm-9:57 am
1 stop7h 55m
$445
KnoxvillePortland
TYS - PDX
TYSPDX
Knoxville McGhee Tyson
Wed 10/28
12:06 pm-9:56 pm
2 stops12h 50m
Portland
Mon 11/2
11:46 am-11:02 pm
1 stop8h 16m
$461
Showing 1-10 of 20 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 July.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on 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 41 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?
Airfare is below average for this route at the moment.
Knoxville to Portland flights typically cost between $525 and $662 in October.The cheapest round-trip price found within the last 5 days was $331 on Multiple Airlines (Oct 25-Oct 29).
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 July 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.
Overall
7.8
Boarding
8.1
Entertainment
7.8
Food
7.2
Crew
8.5
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Overall
7.8
Boarding
8.1
Entertainment
7.8
Food
7.2
Crew
8.5
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Overall
7.8
Boarding
8.1
Entertainment
7.8
Food
7.2
Crew
8.5
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Overall
7.8
Boarding
8.1
Entertainment
7.8
Food
7.2
Crew
8.5
Comfort
7.8
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 locationsBeaverton
Seaside
Vancouver
Lincoln City
Longview
Lake Oswego
Hillsboro
Kelso
Clackamas
Troutdale
Cannon Beach
McMinnville
The Dalles
Wilsonville
Depoe Bay
Stevenson
Tillamook
Astoria
Gresham
Silverton
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Knoxville and Portland flights
Browse other Knoxville and Portland flight options. Last updated on July 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 July 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 July 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 July 30, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$279 | Average$500 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$345 | Average$536 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$354 | Average$594 | FlexibilityNo cancel fee | On-timeN/A |