$158+ 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 10/29. Fares are subject to change and may not be available on all flights or dates of travel.
TYS — PDX
Jul 19 — Jul 261
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
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
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
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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 19, 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 19, 2026.
This CheapOair deal was found by Cheapflights users on 6/16. 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 6/16![Frontier logo]()
$334
This Kiwi.com deal was found by Cheapflights users on 6/15. 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 9/207:00 am
TYS
- PDX
1 stop12h 35m
Multiple Airlines
Sat 9/263:22 pm
PDX
- TYS
1 stop19h 22m
Multiple Airlines
Deal found 6/15![Multiple Airlines logo]()
$340
This American Airlines deal was found by Cheapflights users on 6/16. 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 7/148:11 pm
TYS
- PDX
1 stop7h 44m
American Airlines
Tue 7/211:34 pm
PDX
- TYS
1 stop7h 17m
American Airlines
Deal found 6/16![American Airlines logo]()
$355
This CheapOair deal was found by Cheapflights users on 6/16. 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 6/16![Frontier logo]()
$374
This Kiwi.com deal was found by Cheapflights users on 6/14. 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 8/277:00 am
TYS
- PDX
1 stop12h 57m
Multiple Airlines
Sun 8/306:19 pm
PDX
- TYS
1 stop18h 39m
Multiple Airlines
Deal found 6/14![Multiple Airlines logo]()
$377
This Delta deal was found by Cheapflights users on 6/16. 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 6/16![Delta logo]()
$384
This American Airlines deal was found by Cheapflights users on 6/17. 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 12/24:22 pm
TYS
- PDX
1 stop9h 34m
American Airlines
Sat 12/511:40 am
PDX
- TYS
2 stops9h 10m
American Airlines
Deal found 6/17![American Airlines logo]()
$390
This American Airlines deal was found by Cheapflights users on 6/14. 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 7/34:07 pm
TYS
- PDX
1 stop10h 48m
American Airlines
Mon 7/612:45 am
PDX
- TYS
1 stop7h 28m
American Airlines
Deal found 6/14![American Airlines logo]()
$391
Best flights from Knoxville to PortlandDiscover carefully curated flight deals from Knoxville to Portland that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 19, 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 19, 2026.
This Delta deal was found by Cheapflights users on 6/14. 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 6/14![Delta logo]()
$384
This Kiwi.com deal was found by Cheapflights users on 6/18. 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 11/126:30 am
TYS
- PDX
1 stop13h 05m
Multiple Airlines
Sun 11/159:03 pm
PDX
- TYS
1 stop21h 16m
Multiple Airlines
Deal found 6/18![Multiple Airlines logo]()
$406
This United Airlines deal was found by Cheapflights users on 6/15. 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 9/253:45 pm
TYS
- PDX
2 stops10h 08m
United Airlines
Mon 9/2811:30 pm
PDX
- TYS
1 stop7h 15m
United Airlines
Deal found 6/15![United Airlines logo]()
$440
This Delta deal was found by Cheapflights users on 6/15. 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 7/46:45 am
TYS
- PDX
1 stop8h 55m
Delta
Sat 7/410:30 pm
PDX
- TYS
1 stop9h 39m
Delta
Deal found 6/15![Delta logo]()
$395
This United Airlines deal was found by Cheapflights users on 6/18. 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 9/296:00 am
TYS
- PDX
1 stop8h 33m
United Airlines
Wed 9/3010:43 am
PDX
- TYS
1 stop8h 31m
United Airlines
Deal found 6/18![United Airlines logo]()
$465
This Delta deal was found by Cheapflights users on 6/15. 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 10/305:30 am
TYS
- PDX
1 stop8h 26m
Delta
Mon 11/211:39 am
PDX
- TYS
1 stop8h 23m
Delta
Deal found 6/15![Delta logo]()
$435
This United Airlines deal was found by Cheapflights users on 6/17. 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 8/16:00 am
TYS
- PDX
1 stop8h 37m
United Airlines
Sun 8/911:40 pm
PDX
- TYS
1 stop7h 03m
United Airlines
Deal found 6/17![United Airlines logo]()
$502
This Delta deal was found by Cheapflights users on 6/14. 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 8/284:38 pm
TYS
- PDX
1 stop8h 06m
Delta
Mon 8/311:30 pm
PDX
- TYS
1 stop6h 30m
Delta
Deal found 6/14![Delta logo]()
$487
Last-minute flights from Knoxville to PortlandDiscover last-minute flight deals from Knoxville to Portland. Data last updated June 19, 2026 and is based on user searches.
Discover last-minute flight deals from Knoxville to Portland. Data last updated June 19, 2026 and is based on user searches.
This CheapOair deal was found by Cheapflights users on 6/16. 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 6/16![Frontier logo]()
$374
This American Airlines deal was found by Cheapflights users on 6/14. 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 7/34:07 pm
TYS
- PDX
1 stop10h 48m
American Airlines
Mon 7/612:45 am
PDX
- TYS
1 stop7h 28m
American Airlines
Deal found 6/14![American Airlines logo]()
$391
This Delta deal was found by Cheapflights users on 6/15. 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 7/46:45 am
TYS
- PDX
1 stop8h 55m
Delta
Sat 7/410:30 pm
PDX
- TYS
1 stop9h 39m
Delta
Deal found 6/15![Delta logo]()
$395
This CheapOair deal was found by Cheapflights users on 6/17. 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 7/68:19 pm
TYS
- PDX
1 stop23h 12m
Frontier
Thu 7/912:20 pm
PDX
- TYS
1 stop28h 04m
Frontier
Deal found 6/17![Frontier logo]()
$401
This American Airlines deal was found by Cheapflights users on 6/16. 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 7/148:11 pm
TYS
- PDX
1 stop7h 44m
American Airlines
Tue 7/211:34 pm
PDX
- TYS
1 stop7h 17m
American Airlines
Deal found 6/16![American Airlines logo]()
$355
This American Airlines deal was found by Cheapflights users on 6/16. 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
Tue 7/285:49 am
PDX
- TYS
1 stop8h 48m
American Airlines
Deal found 6/16![American Airlines logo]()
$406
This Booking.com deal was found by Cheapflights users on 6/17. 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 7/178:19 pm
TYS
- PDX
1 stop23h 32m
Frontier
Thu 7/2312:20 pm
PDX
- TYS
1 stop28h 04m
Frontier
Deal found 6/17![Frontier logo]()
$399
This CheapOair deal was found by Cheapflights users on 6/16. 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 6/16![Frontier logo]()
$334
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 19, 2026.
Search for one-way flight options from Knoxville to Portland. Find affordable one-way fares based on user searches. Data last updated June 19, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/16. 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 10/296:30 am
TYS
- PDX
1 stop13h 05m
Multiple Airlines
Deal found 6/16![Multiple Airlines logo]()
$158
This Kiwi.com deal was found by Cheapflights users on 6/17. 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 8/277:00 am
TYS
- PDX
1 stop13h 11m
Multiple Airlines
Deal found 6/17![Multiple Airlines logo]()
$161
This United Airlines deal was found by Cheapflights users on 6/17. 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 8/267:00 am
TYS
- PDX
1 stop7h 28m
United Airlines
Deal found 6/17![United Airlines logo]()
$178
This Southwest deal was found by Cheapflights users on 6/17. 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 8/263:00 pm
TYS
- PDX
2 stops10h 20m
Southwest
Deal found 6/17![Southwest logo]()
$183
This CheapOair deal was found by Cheapflights users on 6/16. 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 7/278:19 pm
TYS
- PDX
1 stop23h 12m
Frontier
Deal found 6/16![Frontier logo]()
$195
This Mytrip deal was found by Cheapflights users on 6/17. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/248:32 pm
TYS
- PDX
1 stop23h 25m
Frontier
Deal found 6/17![Frontier logo]()
$227
This United Airlines deal was found by Cheapflights users on 6/16. 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 7/284:56 pm
TYS
- PDX
1 stop7h 19m
United Airlines
Deal found 6/16![United Airlines logo]()
$233
This Southwest deal was found by Cheapflights users on 6/16. 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 10/297:10 am
TYS
- PDX
2 stops10h 30m
Southwest
Deal found 6/16![Southwest logo]()
$234
This CheapOair deal was found by Cheapflights users on 6/18. 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 6/18![Frontier logo]()
$255
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 19, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $334 (CheapOair) |
One-way from | $158 (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 19, 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
Wed 10/28
3:55 pm-10:26 pm
1 stop9h 31m
Portland
Mon 11/2
11:39 am-11:02 pm
1 stop8h 23m
$384
KnoxvillePortland
TYS - PDX
TYSPDX
Knoxville McGhee Tyson
Sat 7/4
6:45 am-12:40 pm
1 stop8h 55m
Portland
Sat 7/4
10:30 pm-11:09 am
1 stop9h 39m
$395
KnoxvillePortland
TYS - PDX
TYSPDX
Knoxville McGhee Tyson
Thu 11/12
6:30 am-4:35 pm
1 stop13h 05m
Portland
Sun 11/15
9:03 pm-9:19 pm
1 stop21h 16m
$406
KnoxvillePortland
TYS - PDX
TYSPDX
Knoxville McGhee Tyson
Fri 10/30
5:30 am-10:56 am
1 stop8h 26m
Portland
Mon 11/2
11:39 am-11:02 pm
1 stop8h 23m
$435
KnoxvillePortland
TYS - PDX
TYSPDX
Knoxville McGhee Tyson
Fri 9/25
3:45 pm-10:53 pm
2 stops10h 08m
Portland
Mon 9/28
11:30 pm-9:45 am
1 stop7h 15m
$440
KnoxvillePortland
TYS - PDX
TYSPDX
Knoxville McGhee Tyson
Tue 9/29
6:00 am-11:33 am
1 stop8h 33m
Portland
Wed 9/30
10:43 am-10:14 pm
1 stop8h 31m
$465
Quickest round-trip
KnoxvillePortland
TYS - PDX
TYSPDX
Knoxville McGhee Tyson
Fri 8/28
4:38 pm-9:44 pm
1 stop8h 06m
Portland
Mon 8/31
1:30 pm-11:00 pm
1 stop6h 30m
$487
KnoxvillePortland
TYS - PDX
TYSPDX
Knoxville McGhee Tyson
Sat 8/1
6:00 am-11:37 am
1 stop8h 37m
Portland
Sun 8/9
11:40 pm-9:43 am
1 stop7h 03m
$502
Cheapest one-way
KnoxvillePortland
TYS - PDX
TYSPDX
Knoxville McGhee Tyson
Wed 8/26
6:03 am-12:48 pm
1 stop9h 45m
$178
KnoxvillePortland
TYS - PDX
TYSPDX
Knoxville McGhee Tyson
Wed 8/26
7:00 am-11:28 am
1 stop7h 28m
$178
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 $618). 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 19, 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
Food
7.2
Crew
8.5
Boarding
8.1
Comfort
7.8
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Overall
7.8
Food
7.2
Crew
8.5
Boarding
8.1
Comfort
7.8
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Overall
7.8
Food
7.2
Crew
8.5
Boarding
8.1
Comfort
7.8
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Overall
7.8
Food
7.2
Crew
8.5
Boarding
8.1
Comfort
7.8
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 locationsSeaside
Beaverton
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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Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
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Knoxville and Portland flights
Browse other Knoxville and Portland flight options. Last updated on June 19, 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 19, 2026.
Popular flight searches
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 19, 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 19, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$279 | Average$478 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$345 | Average$536 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$363 | Average$594 | FlexibilityNo cancel fee | On-timeN/A |