$131+ 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 5/10. Fares are subject to change and may not be available on all flights or dates of travel.
TYS — PDX
Mar 13 — Mar 201
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
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
Cheapest
Best
Last-minute
One-way
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 11, 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 11, 2026.
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/211:31 am
TYS
- PDX
1 stop14h 26m
American Airlines
Sat 5/96:22 am
PDX
- TYS
1 stop11h 59m
American Airlines
Deal found 2/8![American Airlines logo]()
$341
This American Airlines 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 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 2/8![American Airlines logo]()
$358
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/27:05 am
TYS
- PDX
2 stops10h 52m
United Airlines
Sat 5/911:55 pm
PDX
- TYS
1 stop7h 11m
United Airlines
Deal found 2/8![United Airlines logo]()
$372
This United Airlines deal was found by Cheapflights users on 2/9. 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.
Mon 3/94:18 pm
TYS
- PDX
1 stop7h 52m
United Airlines
Mon 3/1611:10 pm
PDX
- TYS
1 stop8h 39m
United Airlines
Deal found 2/9![United Airlines logo]()
$385
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/55:35 am
TYS
- PDX
1 stop16h 18m
American Airlines
Sat 9/128:01 am
PDX
- TYS
1 stop12h 45m
American Airlines
Deal found 2/8![American Airlines logo]()
$393
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/64:25 pm
TYS
- PDX
2 stops19h 34m
Multiple Airlines
Sun 5/1012:52 pm
PDX
- TYS
1 stop30h 59m
Multiple Airlines
Deal found 2/8![Multiple Airlines logo]()
$398
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
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/87:20 am
TYS
- PDX
2 stops30h 49m
Multiple Airlines
Sun 3/1512:04 pm
PDX
- TYS
1 stop24h 21m
Multiple Airlines
Deal found 2/8![Multiple Airlines logo]()
$424
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 11, 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 11, 2026.
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/211:31 am
TYS
- PDX
1 stop14h 26m
American Airlines
Sat 5/96:22 am
PDX
- TYS
1 stop11h 59m
American Airlines
Deal found 2/8![American Airlines logo]()
$341
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/27:05 am
TYS
- PDX
2 stops10h 52m
United Airlines
Sat 5/911:55 pm
PDX
- TYS
1 stop7h 11m
United Airlines
Deal found 2/8![United Airlines logo]()
$372
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
This American Airlines deal was found by Cheapflights users on 2/9. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/54:09 pm
TYS
- PDX
1 stop9h 40m
American Airlines
Sat 5/96:22 am
PDX
- TYS
2 stops10h 39m
American Airlines
Deal found 2/9![American Airlines logo]()
$377
This United Airlines deal was found by Cheapflights users on 2/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/64:18 pm
TYS
- PDX
1 stop9h 41m
United Airlines
Wed 3/115:05 am
PDX
- TYS
1 stop6h 57m
United Airlines
Deal found 2/10![United Airlines logo]()
$428
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.
Fri 6/266:15 pm
TYS
- PDX
1 stop8h 19m
Delta
Tue 6/309:45 pm
PDX
- TYS
1 stop8h 26m
Delta
Deal found 2/8![Delta logo]()
$437
This American Airlines deal was found by Cheapflights users on 2/9. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/94:15 pm
TYS
- PDX
2 stops11h 00m
American Airlines
Mon 3/1611:59 pm
PDX
- TYS
1 stop7h 11m
American Airlines
Deal found 2/9![American Airlines logo]()
$425
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 6/246:15 pm
TYS
- PDX
1 stop8h 19m
Delta
Tue 6/309:45 pm
PDX
- TYS
1 stop8h 26m
Delta
Deal found 2/8![Delta logo]()
$437
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.
Thu 6/255:57 pm
TYS
- PDX
1 stop9h 02m
Delta
Tue 6/309:45 pm
PDX
- TYS
1 stop8h 26m
Delta
Deal found 2/8![Delta logo]()
$437
Last-minute flights from Knoxville to PortlandDiscover last-minute flight deals from Knoxville to Portland. Data last updated February 11, 2026 and is based on user searches.
Discover last-minute flight deals from Knoxville to Portland. Data last updated February 11, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 2/9. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/244:29 pm
TYS
- PDX
1 stop9h 58m
American Airlines
Mon 3/911:59 pm
PDX
- TYS
1 stop7h 11m
American Airlines
Deal found 2/9![American Airlines logo]()
$471
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/256:21 pm
TYS
- PDX
1 stop8h 06m
American Airlines
Wed 3/41:52 pm
PDX
- TYS
1 stop7h 36m
American Airlines
Deal found 2/8![American Airlines logo]()
$462
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 2/257:38 am
TYS
- PDX
2 stops12h 55m
Delta
Wed 3/47:15 am
PDX
- TYS
2 stops12h 57m
Delta
Deal found 2/8![Delta logo]()
$472
This United Airlines deal was found by Cheapflights users on 2/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/64:18 pm
TYS
- PDX
1 stop9h 41m
United Airlines
Wed 3/115:05 am
PDX
- TYS
1 stop6h 57m
United Airlines
Deal found 2/10![United Airlines logo]()
$428
This Kiwi.com deal was found by Cheapflights users on 2/10. 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.
Sat 3/76:24 pm
TYS
- PDX
2 stops42h 45m
Multiple Airlines
Thu 3/1212:04 pm
PDX
- TYS
1 stop24h 21m
Multiple Airlines
Deal found 2/10![Multiple Airlines logo]()
$466
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/87:20 am
TYS
- PDX
2 stops30h 49m
Multiple Airlines
Sun 3/1512:04 pm
PDX
- TYS
1 stop24h 21m
Multiple Airlines
Deal found 2/8![Multiple Airlines logo]()
$424
This United Airlines deal was found by Cheapflights users on 2/9. 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.
Mon 3/94:18 pm
TYS
- PDX
1 stop7h 52m
United Airlines
Mon 3/1611:10 pm
PDX
- TYS
1 stop8h 39m
United Airlines
Deal found 2/9![United Airlines logo]()
$385
This American Airlines deal was found by Cheapflights users on 2/9. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/94:15 pm
TYS
- PDX
2 stops11h 00m
American Airlines
Mon 3/1611:59 pm
PDX
- TYS
1 stop7h 11m
American Airlines
Deal found 2/9![American Airlines logo]()
$425
This American Airlines deal was found by Cheapflights users on 2/11. 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.
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 2/11![American Airlines logo]()
$441
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 11, 2026.
Search for one-way flight options from Knoxville to Portland. Find affordable one-way fares based on user searches. Data last updated February 11, 2026.
This Trip.com deal was found by Cheapflights users on 2/9. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/104:28 pm
TYS
- PDX
1 stop21h 35m
Frontier
Deal found 2/9![Frontier logo]()
$131
This Kiwi.com deal was found by Cheapflights users on 2/11. 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.
Sun 5/311:27 am
TYS
- PDX
2 stops26h 36m
Multiple Airlines
Deal found 2/11![Multiple Airlines logo]()
$181
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/1711:27 am
TYS
- PDX
3 stops52h 35m
Multiple Airlines
Deal found 2/8![Multiple Airlines logo]()
$204
This Kiwi.com deal was found by Cheapflights users on 2/11. 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.
Sun 5/34:28 pm
TYS
- PDX
1 stop21h 35m
Frontier
Deal found 2/11![Frontier logo]()
$209
This 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 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 2/8![United Airlines logo]()
$230
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.
Fri 6/196:15 pm
TYS
- PDX
2 stops8h 26m
Delta
Deal found 2/8![Delta logo]()
$245
This American Airlines deal was found by Cheapflights users on 2/9. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/196:26 pm
TYS
- PDX
1 stop8h 33m
American Airlines
Deal found 2/9![American Airlines logo]()
$267
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 11, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $341 (American Airlines) |
One-way from | $131 (Trip.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 11, 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
Sat 5/2
11:31 am-10:57 pm
1 stop14h 26m
Portland
Sat 5/9
6:22 am-9:21 pm
1 stop11h 59m
$341
KnoxvillePortland
TYS - PDX
TYSPDX
Knoxville McGhee Tyson
Sat 5/2
7:05 am-2:57 pm
2 stops10h 52m
Portland
Sat 5/9
11:55 pm-10:06 am
1 stop7h 11m
$372
KnoxvillePortland
TYS - PDX
TYSPDX
Knoxville McGhee Tyson
Tue 5/5
4:09 pm-10:49 pm
1 stop9h 40m
Portland
Sat 5/9
6:22 am-8:01 pm
2 stops10h 39m
$377
KnoxvillePortland
TYS - PDX
TYSPDX
Knoxville McGhee Tyson
Wed 5/6
5:26 pm-11:55 pm
2 stops9h 29m
Portland
Sun 5/10
8:06 pm-11:12 am
2 stops12h 06m
$412
KnoxvillePortland
TYS - PDX
TYSPDX
Knoxville McGhee Tyson
Mon 3/9
4:15 pm-12:15 am
2 stops11h 00m
Portland
Mon 3/16
11:59 pm-10:10 am
1 stop7h 11m
$425
KnoxvillePortland
TYS - PDX
TYSPDX
Knoxville McGhee Tyson
Fri 3/6
4:18 pm-10:59 pm
1 stop9h 41m
Portland
Wed 3/11
5:05 am-3:02 pm
1 stop6h 57m
$428
KnoxvillePortland
TYS - PDX
TYSPDX
Knoxville McGhee Tyson
Fri 6/26
6:15 pm-11:34 pm
1 stop8h 19m
Portland
Tue 6/30
9:45 pm-9:11 am
1 stop8h 26m
$437
KnoxvillePortland
TYS - PDX
TYSPDX
Knoxville McGhee Tyson
Wed 6/24
6:15 pm-11:34 pm
1 stop8h 19m
Portland
Tue 6/30
9:45 pm-9:11 am
1 stop8h 26m
$437
KnoxvillePortland
TYS - PDX
TYSPDX
Knoxville McGhee Tyson
Thu 6/25
5:57 pm-11:59 pm
1 stop9h 02m
Portland
Tue 6/30
9:45 pm-9:11 am
1 stop8h 26m
$437
KnoxvillePortland
TYS - PDX
TYSPDX
Knoxville McGhee Tyson
Sun 5/10
4:28 pm-11:03 am
1 stop21h 35m
$131
Showing 1-10 of 16 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 11, 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.
Entertainment
7.0
Food
7.1
Overall
8.0
Crew
8.5
Comfort
7.8
Boarding
8.1
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Entertainment
7.0
Food
7.1
Overall
8.0
Crew
8.5
Comfort
7.8
Boarding
8.1
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Entertainment
7.0
Food
7.1
Overall
8.0
Crew
8.5
Comfort
7.8
Boarding
8.1
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Entertainment
7.0
Food
7.1
Overall
8.0
Crew
8.5
Comfort
7.8
Boarding
8.1
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Entertainment
7.0
Food
7.1
Overall
8.0
Crew
8.5
Comfort
7.8
Boarding
8.1
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
Hillsboro
Troutdale
Cannon Beach
Long Beach
McMinnville
Tigard
The Dalles
Beaverton
Depoe Bay
Stevenson
Wilsonville
Tillamook
Pacific City
Gresham
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
Other flight options
Other flights from Knoxville
Popular flights
Portland flight routes
Alternative routes for Knoxville to Portland
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Portland by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Knoxville to Portland by cabin class
Find flights from Knoxville to Portland, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Knoxville and Portland flights
Browse other Knoxville and Portland flight options. Last updated on February 11, 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 February 11, 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 February 11, 2026.
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 11, 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% |