$161+ 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 5/6. Fares are subject to change and may not be available on all flights or dates of travel.
TYS — PDX
Mar 10 — Mar 171
1 adult, Economy
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Find cheap flights from Knoxville to Portland with Cheapflights
1. Tell us where you want to go
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 February 8, 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 February 8, 2026.
This American Airlines deal was found by Cheapflights users on 2/7. 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 9/57:27 am
TYS
- PDX
1 stop16h 50m
American Airlines
Sat 9/1210:13 am
PDX
- TYS
1 stop10h 33m
American Airlines
Deal found 2/7![American Airlines logo]()
$327
This American Airlines deal was found by Cheapflights users on 2/7. 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 5/57:50 am
TYS
- PDX
1 stop17h 52m
American Airlines
Sat 5/96:22 am
PDX
- TYS
1 stop11h 59m
American Airlines
Deal found 2/7![American Airlines logo]()
$358
This Delta deal was found by Cheapflights users on 2/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/75:40 am
TYS
- PDX
1 stop7h 50m
Delta
Wed 4/86:30 am
PDX
- TYS
1 stop6h 36m
Delta
Deal found 2/6![Delta logo]()
$359
This American Airlines deal was found by Cheapflights users on 2/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/185:10 pm
TYS
- PDX
1 stop8h 47m
American Airlines
Wed 4/221:52 pm
PDX
- TYS
1 stop7h 04m
American Airlines
Deal found 2/6![American Airlines logo]()
$363
This American Airlines deal was found by Cheapflights users on 2/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/136:00 am
TYS
- PDX
1 stop8h 01m
American Airlines
Tue 5/1911:47 pm
PDX
- TYS
1 stop8h 31m
American Airlines
Deal found 2/5![American Airlines logo]()
$366
This Delta deal was found by Cheapflights users on 2/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/45:20 pm
TYS
- PDX
1 stop7h 48m
Delta
Tue 4/710:30 pm
PDX
- TYS
1 stop7h 46m
Delta
Deal found 2/6![Delta logo]()
$372
This Delta deal was found by Cheapflights users on 2/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/187:50 am
TYS
- PDX
2 stops12h 42m
Delta
Tue 4/2112:30 am
PDX
- TYS
2 stops13h 12m
Delta
Deal found 2/6![Delta logo]()
$374
This Delta deal was found by Cheapflights users on 2/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/45:20 pm
TYS
- PDX
1 stop7h 48m
Delta
Tue 4/712:30 am
PDX
- TYS
2 stops13h 13m
Delta
Deal found 2/6![Delta logo]()
$377
This Delta deal was found by Cheapflights users on 2/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/55:26 pm
TYS
- PDX
2 stops9h 27m
Delta
Sat 5/910:55 pm
PDX
- TYS
2 stops12h 38m
Delta
Deal found 2/7![Delta logo]()
$378
This Delta deal was found by Cheapflights users on 2/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/711:18 am
TYS
- PDX
2 stops12h 41m
Delta
Mon 4/137:32 pm
PDX
- TYS
2 stops10h 52m
Delta
Deal found 2/6![Delta 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 February 8, 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 February 8, 2026.
This American Airlines deal was found by Cheapflights users on 2/7. 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 5/57:50 am
TYS
- PDX
1 stop17h 52m
American Airlines
Sat 5/96:22 am
PDX
- TYS
1 stop11h 59m
American Airlines
Deal found 2/7![American Airlines logo]()
$358
This Delta deal was found by Cheapflights users on 2/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/123:00 pm
TYS
- PDX
1 stop9h 40m
Delta
Sat 5/165:51 pm
PDX
- TYS
2 stops12h 36m
Delta
Deal found 2/6![Delta logo]()
$368
This United Airlines deal was found by Cheapflights users on 2/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/235:48 pm
TYS
- PDX
1 stop7h 41m
United Airlines
Tue 4/285:00 am
PDX
- TYS
2 stops8h 52m
United Airlines
Deal found 2/5![United Airlines logo]()
$377
This American Airlines deal was found by Cheapflights users on 2/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/136:00 am
TYS
- PDX
1 stop8h 01m
American Airlines
Tue 5/1911:47 pm
PDX
- TYS
1 stop8h 31m
American Airlines
Deal found 2/5![American Airlines logo]()
$366
This Delta deal was found by Cheapflights users on 2/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/187:50 am
TYS
- PDX
2 stops12h 42m
Delta
Tue 4/2112:30 am
PDX
- TYS
2 stops13h 12m
Delta
Deal found 2/6![Delta logo]()
$374
This American Airlines deal was found by Cheapflights users on 2/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/234:09 pm
TYS
- PDX
1 stop8h 29m
American Airlines
Tue 4/2811:40 pm
PDX
- TYS
1 stop7h 46m
American Airlines
Deal found 2/5![American Airlines logo]()
$372
This Delta deal was found by Cheapflights users on 2/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/65:10 pm
TYS
- PDX
1 stop7h 58m
Delta
Wed 4/86:30 am
PDX
- TYS
1 stop6h 36m
Delta
Deal found 2/6![Delta logo]()
$398
This American Airlines deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/1011:31 am
TYS
- PDX
1 stop14h 11m
American Airlines
Sun 4/126:22 am
PDX
- TYS
1 stop11h 59m
American Airlines
Deal found 2/4![American Airlines logo]()
$395
This Delta deal was found by Cheapflights users on 2/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/75:40 am
TYS
- PDX
1 stop7h 50m
Delta
Sun 4/1211:15 pm
PDX
- TYS
1 stop8h 06m
Delta
Deal found 2/6![Delta logo]()
$398
This Delta deal was found by Cheapflights users on 2/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/55:40 am
TYS
- PDX
1 stop7h 50m
Delta
Mon 4/612:30 am
PDX
- TYS
2 stops13h 13m
Delta
Deal found 2/6![Delta logo]()
$403
This Delta deal was found by Cheapflights users on 2/8. 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 5/65:26 pm
TYS
- PDX
2 stops9h 29m
Delta
Sun 5/108:06 pm
PDX
- TYS
2 stops12h 06m
Delta
Deal found 2/8![Delta logo]()
$412
Last-minute flights from Knoxville to PortlandDiscover last-minute flight deals from Knoxville to Portland. Data last updated February 8, 2026 and is based on user searches.
Discover last-minute flight deals from Knoxville to Portland. Data last updated February 8, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/181:50 pm
TYS
- PDX
1 stop7h 59m
United Airlines
Wed 2/255:05 am
PDX
- TYS
1 stop7h 00m
United Airlines
Deal found 2/4![United Airlines logo]()
$462
This Delta deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/181:00 pm
TYS
- PDX
2 stops10h 55m
Delta
Wed 2/257:15 am
PDX
- TYS
2 stops12h 57m
Delta
Deal found 2/4![Delta logo]()
$472
This Delta deal was found by Cheapflights users on 2/7. 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 2/265:35 am
TYS
- PDX
1 stop8h 17m
Delta
Mon 3/29:45 pm
PDX
- TYS
1 stop8h 19m
Delta
Deal found 2/7![Delta logo]()
$471
This American Airlines deal was found by Cheapflights users on 2/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/274:02 pm
TYS
- PDX
1 stop11h 15m
American Airlines
Sun 3/111:35 pm
PDX
- TYS
1 stop18h 05m
American Airlines
Deal found 2/5![American Airlines logo]()
$395
This American Airlines deal was found by Cheapflights users on 2/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/411:42 am
TYS
- PDX
1 stop15h 35m
American Airlines
Wed 3/1111:59 pm
PDX
- TYS
1 stop7h 49m
American Airlines
Deal found 2/5![American Airlines logo]()
$450
This Kiwi.com deal was found by Cheapflights users on 2/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/109:00 am
TYS
- PDX
1 stop26h 58m
Multiple Airlines
Sun 3/1512:04 pm
PDX
- TYS
1 stop24h 21m
Multiple Airlines
Deal found 2/6![Multiple Airlines logo]()
$421
This Delta deal was found by Cheapflights users on 2/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/107:40 am
TYS
- PDX
2 stops12h 59m
Delta
Sun 3/1511:15 pm
PDX
- TYS
1 stop8h 16m
Delta
Deal found 2/5![Delta logo]()
$463
This Delta deal was found by Cheapflights users on 2/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/145:13 pm
TYS
- PDX
1 stop7h 55m
Delta
Mon 3/1611:15 pm
PDX
- TYS
1 stop8h 16m
Delta
Deal found 2/5![Delta logo]()
$437
This United Airlines deal was found by Cheapflights users on 2/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/2410:55 am
TYS
- PDX
2 stops10h 52m
United Airlines
Wed 3/2511:10 pm
PDX
- TYS
1 stop8h 39m
United Airlines
Deal found 2/5![United Airlines logo]()
$442
This American Airlines deal was found by Cheapflights users on 2/7. 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 3/314:29 pm
TYS
- PDX
1 stop8h 33m
American Airlines
Thu 4/211:46 am
PDX
- TYS
1 stop6h 38m
American Airlines
Deal found 2/7![American Airlines logo]()
$425
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 February 8, 2026.
Search for one-way flight options from Knoxville to Portland. Find affordable one-way fares based on user searches. Data last updated February 8, 2026.
This Kiwi.com deal was found by Cheapflights users on 2/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/611:26 am
TYS
- PDX
2 stops26h 37m
Multiple Airlines
Deal found 2/6![Multiple Airlines logo]()
$161
This United Airlines deal was found by Cheapflights users on 2/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/57:05 am
TYS
- PDX
1 stop8h 38m
United Airlines
Deal found 2/6![United Airlines logo]()
$180
This Kiwi.com deal was found by Cheapflights users on 2/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/53:48 pm
TYS
- PDX
3 stops46h 15m
Multiple Airlines
Deal found 2/6![Multiple Airlines logo]()
$184
This Delta deal was found by Cheapflights users on 2/7. 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.
Mon 3/235:10 pm
TYS
- PDX
1 stop7h 58m
Delta
Deal found 2/7![Delta logo]()
$193
This Kiwi.com deal was found by Cheapflights users on 2/7. 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.
Sat 3/217:20 am
TYS
- PDX
2 stops31h 32m
Multiple Airlines
Deal found 2/7![Multiple Airlines logo]()
$209
This Delta deal was found by Cheapflights users on 2/7. 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.
Sat 3/215:40 am
TYS
- PDX
1 stop7h 50m
Delta
Deal found 2/7![Delta logo]()
$219
This American Airlines deal was found by Cheapflights users on 2/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/34:02 pm
TYS
- PDX
1 stop11h 15m
American Airlines
Deal found 2/5![American Airlines logo]()
$237
This Kiwi.com deal was found by Cheapflights users on 2/7. 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 3/226:20 am
TYS
- PDX
3 stops31h 49m
Multiple Airlines
Deal found 2/7![Multiple Airlines logo]()
$246
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 February 8, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $341 (American Airlines) |
One-way from | $161 (Kiwi.com) |
Popular in | December |
Cheapest in | August |
Average price | $410 |
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 February 8, 2026.
Use the filters below to find and compare flights from Knoxville to Portland that are best for you.
Fly from
Knoxville
Fly to
Portland
Route
Depart
Return
Price
KnoxvillePortland
TYS - PDX
TYSPDX
Knoxville McGhee Tyson
Tue 5/5
7:50 am-10:42 pm
1 stop17h 52m
Portland
Sat 5/9
6:22 am-9:21 pm
1 stop11h 59m
$358
KnoxvillePortland
TYS - PDX
TYSPDX
Knoxville McGhee Tyson
Wed 5/13
6:00 am-11:01 am
1 stop8h 01m
Portland
Tue 5/19
11:47 pm-11:18 am
1 stop8h 31m
$366
KnoxvillePortland
TYS - PDX
TYSPDX
Knoxville McGhee Tyson
Tue 5/12
3:00 pm-9:40 pm
1 stop9h 40m
Portland
Sat 5/16
5:51 pm-9:27 am
2 stops12h 36m
$368
KnoxvillePortland
TYS - PDX
TYSPDX
Knoxville McGhee Tyson
Thu 4/23
4:09 pm-9:38 pm
1 stop8h 29m
Portland
Tue 4/28
11:40 pm-10:26 am
1 stop7h 46m
$372
KnoxvillePortland
TYS - PDX
TYSPDX
Knoxville McGhee Tyson
Sat 4/18
7:50 am-5:32 pm
2 stops12h 42m
Portland
Tue 4/21
12:30 am-4:42 pm
2 stops13h 12m
$374
KnoxvillePortland
TYS - PDX
TYSPDX
Knoxville McGhee Tyson
Thu 4/23
5:48 pm-10:29 pm
1 stop7h 41m
Portland
Tue 4/28
5:00 am-4:52 pm
2 stops8h 52m
$377
KnoxvillePortland
TYS - PDX
TYSPDX
Knoxville McGhee Tyson
Fri 4/10
11:31 am-10:42 pm
1 stop14h 11m
Portland
Sun 4/12
6:22 am-9:21 pm
1 stop11h 59m
$395
KnoxvillePortland
TYS - PDX
TYSPDX
Knoxville McGhee Tyson
Mon 4/6
5:10 pm-10:08 pm
1 stop7h 58m
Portland
Wed 4/8
6:30 am-4:06 pm
1 stop6h 36m
$398
KnoxvillePortland
TYS - PDX
TYSPDX
Knoxville McGhee Tyson
Tue 4/7
5:40 am-10:30 am
1 stop7h 50m
Portland
Sun 4/12
11:15 pm-10:21 am
1 stop8h 06m
$398
KnoxvillePortland
TYS - PDX
TYSPDX
Knoxville McGhee Tyson
Sun 4/5
5:40 am-10:30 am
1 stop7h 50m
Portland
Mon 4/6
12:30 am-4:43 pm
2 stops13h 13m
$403
Showing 1-10 of 17 results
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 February.
| 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?
Use this chart to determine the optimal time to book a round-trip flight from Knoxville to Portland. Price data was last updated on February 6, 2026.
Booking 38 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 $138). Flying from Knoxville to Portland in January is currently the most expensive (average of $298). 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.
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 February 8, 2026.
Get a feel of what it's like to fly with Alaska Airlines, Delta, and United 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
8.0
Crew
8.5
Entertainment
7.0
Boarding
8.1
Comfort
7.8
Food
7.1
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Overall
8.0
Crew
8.5
Entertainment
7.0
Boarding
8.1
Comfort
7.8
Food
7.1
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Overall
8.0
Crew
8.5
Entertainment
7.0
Boarding
8.1
Comfort
7.8
Food
7.1
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Overall
8.0
Crew
8.5
Entertainment
7.0
Boarding
8.1
Comfort
7.8
Food
7.1
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Overall
8.0
Crew
8.5
Entertainment
7.0
Boarding
8.1
Comfort
7.8
Food
7.1
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
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 locationsVancouver
Seaside
Clackamas
Lincoln City
Longview
Lake Oswego
Beaverton
Hillsboro
Troutdale
Cannon Beach
Long Beach
McMinnville
Tigard
The Dalles
Depoe Bay
Wilsonville
Stevenson
Tillamook
Pacific City
Gresham
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Knoxville and Portland flights
Browse other Knoxville and Portland flight options. Last updated on February 8, 2026.
Other flights from Knoxville
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Top 4 airlines flying from Knoxville to Portland
Discover the top 4 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 February 8, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$250 | Average$367 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$276 | Average$412 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$328 | Average$536 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$551 | Average$688 | FlexibilityNo cancel fee | On-time75% |