$136+ 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 6/19. Fares are subject to change and may not be available on all flights or dates of travel.
TYS — PDX
Jun 12 — Jun 191
Round-trip
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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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Knoxville to Portland
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Best
Last-minute
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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 May 13, 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 May 13, 2026.
This CheapOair deal was found by Cheapflights users on 5/9. 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 7/18:32 pm
TYS
- PDX
1 stop23h 25m
Frontier
Tue 7/75:16 pm
PDX
- TYS
1 stop23h 20m
Frontier
Deal found 5/9![Frontier logo]()
$324
This CheapOair deal was found by Cheapflights users on 5/9. 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 6/198:32 pm
TYS
- PDX
1 stop23h 25m
Frontier
Tue 6/235:20 pm
PDX
- TYS
1 stop23h 17m
Frontier
Deal found 5/9![Frontier logo]()
$345
This Gotogate deal was found by Cheapflights users on 5/9. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/228:32 pm
TYS
- PDX
1 stop23h 03m
Frontier
Tue 6/305:20 pm
PDX
- TYS
1 stop23h 17m
Frontier
Deal found 5/9![Frontier logo]()
$372
This Delta deal was found by Cheapflights users on 5/9. 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 6/1611:55 am
TYS
- PDX
1 stop9h 54m
Delta
Wed 6/242:10 pm
PDX
- TYS
1 stop6h 44m
Delta
Deal found 5/9![Delta logo]()
$395
This American Airlines deal was found by Cheapflights users on 5/8. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/205:33 pm
TYS
- PDX
1 stop8h 34m
American Airlines
Thu 8/2710:59 pm
PDX
- TYS
1 stop8h 49m
American Airlines
Deal found 5/8![American Airlines logo]()
$411
This Kiwi.com deal was found by Cheapflights users on 5/11. 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 6/510:03 pm
TYS
- PDX
2 stops42h 45m
Multiple Airlines
Wed 6/245:20 pm
PDX
- TYS
1 stop17h 32m
Multiple Airlines
Deal found 5/11![Multiple Airlines logo]()
$413
This Booking.com deal was found by Cheapflights users on 5/11. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/128:32 pm
TYS
- PDX
1 stop23h 25m
Frontier
Tue 6/235:20 pm
PDX
- TYS
1 stop23h 17m
Frontier
Deal found 5/11![Frontier logo]()
$415
This American Airlines deal was found by Cheapflights users on 5/12. 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 7/168:11 pm
TYS
- PDX
1 stop7h 44m
American Airlines
Mon 7/2712:45 am
PDX
- TYS
1 stop9h 09m
American Airlines
Deal found 5/12![American Airlines logo]()
$416
This American Airlines deal was found by Cheapflights users on 5/12. 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 9/121:40 pm
TYS
- PDX
1 stop8h 21m
American Airlines
Wed 9/235:20 am
PDX
- TYS
1 stop8h 25m
American Airlines
Deal found 5/12![American Airlines logo]()
$418
This American Airlines deal was found by Cheapflights users on 5/8. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/76:32 pm
TYS
- PDX
1 stop8h 32m
American Airlines
Tue 7/146:39 am
PDX
- TYS
1 stop9h 51m
American Airlines
Deal found 5/8![American Airlines logo]()
$425
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 May 13, 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 May 13, 2026.
This Delta deal was found by Cheapflights users on 5/8. 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.
Thu 7/97:35 am
TYS
- PDX
1 stop8h 23m
Delta
Thu 7/232:08 pm
PDX
- TYS
1 stop6h 44m
Delta
Deal found 5/8![Delta logo]()
$518
This United Airlines deal was found by Cheapflights users on 5/8. 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 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 stops12h 08m
United Airlines
Sat 9/127:00 am
PDX
- TYS
1 stop6h 59m
United Airlines
Deal found 5/8![United Airlines logo]()
$520
This United Airlines deal was found by Cheapflights users on 5/8. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/201:53 pm
TYS
- PDX
2 stops11h 52m
United Airlines
Thu 8/2711:02 pm
PDX
- TYS
2 stops12h 35m
United Airlines
Deal found 5/8![United Airlines logo]()
$525
This United Airlines deal was found by Cheapflights users on 5/12. 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 8/264:50 pm
TYS
- PDX
1 stop9h 04m
United Airlines
Sat 8/295:00 am
PDX
- TYS
1 stop7h 54m
United Airlines
Deal found 5/12![United Airlines logo]()
$526
This United Airlines deal was found by Cheapflights users on 5/8. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/284:56 pm
TYS
- PDX
1 stop9h 04m
United Airlines
Tue 6/211:40 pm
PDX
- TYS
2 stops11h 47m
United Airlines
Deal found 5/8![United Airlines logo]()
$541
This United Airlines deal was found by Cheapflights users on 5/9. 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 7/14:56 pm
TYS
- PDX
1 stop9h 17m
United Airlines
Mon 7/611:40 pm
PDX
- TYS
2 stops11h 47m
United Airlines
Deal found 5/9![United Airlines logo]()
$572
This United Airlines deal was found by Cheapflights users on 5/8. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/35:45 am
TYS
- PDX
2 stops13h 12m
United Airlines
Sat 6/611:30 pm
PDX
- TYS
1 stop8h 12m
United Airlines
Deal found 5/8![United Airlines logo]()
$581
Last-minute flights from Knoxville to PortlandDiscover last-minute flight deals from Knoxville to Portland. Data last updated May 13, 2026 and is based on user searches.
Discover last-minute flight deals from Knoxville to Portland. Data last updated May 13, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 5/8. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/285:33 pm
TYS
- PDX
1 stop10h 17m
American Airlines
Tue 6/21:34 pm
PDX
- TYS
1 stop7h 22m
American Airlines
Deal found 5/8![American Airlines logo]()
$426
This American Airlines deal was found by Cheapflights users on 5/11. 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 6/18:11 pm
TYS
- PDX
1 stop7h 39m
American Airlines
Mon 6/811:43 pm
PDX
- TYS
1 stop8h 30m
American Airlines
Deal found 5/11![American Airlines logo]()
$437
This Kiwi.com deal was found by Cheapflights users on 5/11. 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 6/510:03 pm
TYS
- PDX
2 stops42h 45m
Multiple Airlines
Wed 6/245:20 pm
PDX
- TYS
1 stop17h 32m
Multiple Airlines
Deal found 5/11![Multiple Airlines logo]()
$413
This Booking.com deal was found by Cheapflights users on 5/10. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/108:32 pm
TYS
- PDX
1 stop23h 25m
Frontier
Tue 6/305:20 pm
PDX
- TYS
1 stop23h 17m
Frontier
Deal found 5/10![Frontier logo]()
$435
This Booking.com deal was found by Cheapflights users on 5/11. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/128:32 pm
TYS
- PDX
1 stop23h 25m
Frontier
Tue 6/235:20 pm
PDX
- TYS
1 stop23h 17m
Frontier
Deal found 5/11![Frontier logo]()
$415
This Delta deal was found by Cheapflights users on 5/9. 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 6/1611:55 am
TYS
- PDX
1 stop9h 54m
Delta
Wed 6/242:10 pm
PDX
- TYS
1 stop6h 44m
Delta
Deal found 5/9![Delta logo]()
$395
This Kiwi.com deal was found by Cheapflights users on 5/11. 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 6/178:32 pm
TYS
- PDX
2 stops26h 15m
Multiple Airlines
Wed 6/245:20 pm
PDX
- TYS
1 stop17h 32m
Multiple Airlines
Deal found 5/11![Multiple Airlines logo]()
$441
This CheapOair deal was found by Cheapflights users on 5/9. 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 6/198:32 pm
TYS
- PDX
1 stop23h 25m
Frontier
Tue 6/235:20 pm
PDX
- TYS
1 stop23h 17m
Frontier
Deal found 5/9![Frontier logo]()
$345
This Gotogate deal was found by Cheapflights users on 5/9. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/228:32 pm
TYS
- PDX
1 stop23h 03m
Frontier
Tue 6/305:20 pm
PDX
- TYS
1 stop23h 17m
Frontier
Deal found 5/9![Frontier logo]()
$372
This American Airlines deal was found by Cheapflights users on 5/10. 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 6/246:43 pm
TYS
- PDX
1 stop8h 04m
American Airlines
Sun 6/2811:43 pm
PDX
- TYS
1 stop8h 30m
American Airlines
Deal found 5/10![American Airlines logo]()
$446
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 May 13, 2026.
Search for one-way flight options from Knoxville to Portland. Find affordable one-way fares based on user searches. Data last updated May 13, 2026.
This CheapOair deal was found by Cheapflights users on 5/12. 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 6/198:32 pm
TYS
- PDX
1 stop23h 25m
Frontier
Deal found 5/12![Frontier logo]()
$136
This CheapOair deal was found by Cheapflights users on 5/11. 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 6/18:32 pm
TYS
- PDX
1 stop23h 29m
Frontier
Deal found 5/11![Frontier logo]()
$156
This Kiwi.com deal was found by Cheapflights users on 5/10. 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 7/291:05 pm
TYS
- PDX
2 stops27h 53m
Multiple Airlines
Deal found 5/10![Multiple Airlines logo]()
$178
This American Airlines deal was found by Cheapflights users on 5/13. 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 6/36:07 pm
TYS
- PDX
1 stop8h 52m
American Airlines
Deal found 5/13![American Airlines logo]()
$198
This Kiwi.com deal was found by Cheapflights users on 5/13. 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 6/31:02 pm
TYS
- PDX
2 stops27h 46m
Multiple Airlines
Deal found 5/13![Multiple Airlines logo]()
$201
This Kiwi.com deal was found by Cheapflights users on 5/11. 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 8/248:30 am
TYS
- PDX
2 stops35h 27m
Multiple Airlines
Deal found 5/11![Multiple Airlines logo]()
$214
This Kiwi.com deal was found by Cheapflights users on 5/11. 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 6/16:00 am
TYS
- PDX
2 stops13h 46m
Multiple Airlines
Deal found 5/11![Multiple Airlines logo]()
$217
This American Airlines deal was found by Cheapflights users on 5/10. 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 7/76:32 pm
TYS
- PDX
1 stop8h 32m
American Airlines
Deal found 5/10![American Airlines logo]()
$218
This United Airlines deal was found by Cheapflights users on 5/12. 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 8/84:56 pm
TYS
- PDX
1 stop7h 19m
United Airlines
Deal found 5/12![United Airlines logo]()
$219
This CheapOair deal was found by Cheapflights users on 5/12. 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 6/268:32 pm
TYS
- PDX
1 stop23h 25m
Frontier
Deal found 5/12![Frontier logo]()
$221
This Kiwi.com deal was found by Cheapflights users on 5/12. 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 5/271:01 pm
TYS
- PDX
2 stops27h 53m
Allegiant Air
Deal found 5/12![Allegiant Air logo]()
$226
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 May 13, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $324 (CheapOair) |
One-way from | $136 (CheapOair) |
Popular in | December |
Cheapest in | August |
Average price | $540 |
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 May 13, 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
Quickest round-trip
KnoxvillePortland
TYS - PDX
TYSPDX
Knoxville McGhee Tyson
Thu 7/9
7:35 am-12:58 pm
1 stop8h 23m
Portland
Thu 7/23
2:08 pm-11:52 pm
1 stop6h 44m
$518
KnoxvillePortland
TYS - PDX
TYSPDX
Knoxville McGhee Tyson
Sat 9/5
9:45 am-6:53 pm
2 stops12h 08m
Portland
Sat 9/12
7:00 am-4:59 pm
1 stop6h 59m
$520
KnoxvillePortland
TYS - PDX
TYSPDX
Knoxville McGhee Tyson
Thu 8/20
1:53 pm-10:45 pm
2 stops11h 52m
Portland
Thu 8/27
11:02 pm-2:37 pm
2 stops12h 35m
$525
KnoxvillePortland
TYS - PDX
TYSPDX
Knoxville McGhee Tyson
Wed 8/26
4:50 pm-10:54 pm
1 stop9h 04m
Portland
Sat 8/29
5:00 am-3:54 pm
1 stop7h 54m
$526
KnoxvillePortland
TYS - PDX
TYSPDX
Knoxville McGhee Tyson
Thu 5/28
4:56 pm-11:00 pm
1 stop9h 04m
Portland
Tue 6/2
11:40 pm-2:27 pm
2 stops11h 47m
$541
KnoxvillePortland
TYS - PDX
TYSPDX
Knoxville McGhee Tyson
Wed 7/1
4:56 pm-11:13 pm
1 stop9h 17m
Portland
Mon 7/6
11:40 pm-2:27 pm
2 stops11h 47m
$572
KnoxvillePortland
TYS - PDX
TYSPDX
Knoxville McGhee Tyson
Wed 6/3
5:45 am-3:57 pm
2 stops13h 12m
Portland
Sat 6/6
11:30 pm-10:42 am
1 stop8h 12m
$581
Cheapest one-way
KnoxvillePortland
TYS - PDX
TYSPDX
Knoxville McGhee Tyson
Wed 7/29
6:10 pm-11:55 pm
1 stop8h 45m
$198
KnoxvillePortland
TYS - PDX
TYSPDX
Knoxville McGhee Tyson
Wed 6/3
6:07 pm-11:59 pm
1 stop8h 52m
$198
KnoxvillePortland
TYS - PDX
TYSPDX
Knoxville McGhee Tyson
Wed 6/3
1:02 pm-1:48 pm
2 stops27h 46m
$201
Showing 1-10 of 16 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 May.
| 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, August is the cheapest month in which you can book a flight from Knoxville to Portland (average of $335). 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 May 13, 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
7.8
Overall
7.9
Boarding
8.1
Crew
8.5
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Food
7.2
Comfort
7.8
Overall
7.9
Boarding
8.1
Crew
8.5
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Food
7.2
Comfort
7.8
Overall
7.9
Boarding
8.1
Crew
8.5
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Food
7.2
Comfort
7.8
Overall
7.9
Boarding
8.1
Crew
8.5
Entertainment
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
Clackamas
Troutdale
Cannon Beach
Long Beach
McMinnville
Tigard
The Dalles
Wilsonville
Depoe Bay
Stevenson
Tillamook
Astoria
Gresham
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Top 3 airlines flying from Knoxville to Portland
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| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$279 | Average$437 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$279 | Average$526 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$345 | Average$536 | FlexibilityNo cancel fee | On-time69% |