$126+ Cheap flights from Knoxville to Portland (TYS - PDX)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/26. Fares are subject to change and may not be available on all flights or dates of travel.
TYS — PDX
Sep 8 — Sep 151
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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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 August 9, 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 August 9, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/8. 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.
Thu 10/296:30 am -
1 stop13h 05m
Sun 11/13:47 pm -
2 stops16h 27m
Deal found 8/8![Multiple Airlines logo]()
$319
This Kiwi.com deal was found by Cheapflights users on 8/6. 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.
Fri 10/167:00 am -
2 stops31h 39m
Sat 10/2412:34 pm -
1 stop21h 37m
Deal found 8/6![Multiple Airlines logo]()
$337
This Kiwi.com deal was found by Cheapflights users on 8/7. 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.
Fri 10/238:00 am -
2 stops30h 39m
Sun 11/19:03 pm -
1 stop20h 49m
Deal found 8/7![Multiple Airlines logo]()
$357
This Kiwi.com deal was found by Cheapflights users on 8/6. 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.
Sun 10/256:30 am -
1 stop13h 05m
Thu 10/293:47 pm -
2 stops26h 54m
Deal found 8/6![Multiple Airlines logo]()
$360
This American Airlines deal was found by Cheapflights users on 8/4. 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.
Sat 9/51:16 pm -
1 stop7h 44m
Sat 9/1212:01 pm -
1 stop8h 21m
Deal found 8/4![American Airlines logo]()
$364
This United Airlines deal was found by Cheapflights users on 8/5. 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.
Wed 9/97:15 am -
1 stop7h 39m
Sat 9/125:00 am -
1 stop7h 46m
Deal found 8/5![United Airlines logo]()
$365
This Kiwi.com deal was found by Cheapflights users on 8/6. 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.
Fri 10/167:00 am -
2 stops31h 39m
Sun 10/259:34 pm -
1 stop20h 18m
Deal found 8/6![Multiple Airlines logo]()
$376
This American Airlines deal was found by Cheapflights users on 8/4. 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 10/307:30 am -
1 stop7h 52m
Mon 11/29:50 pm -
1 stop8h 55m
Deal found 8/4![American Airlines logo]()
$393
This American Airlines deal was found by Cheapflights users on 8/4. 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.
Thu 9/36:52 pm -
1 stop8h 07m
Thu 9/1011:08 pm -
1 stop8h 42m
Deal found 8/4![American Airlines logo]()
$394
This United Airlines deal was found by Cheapflights users on 8/7. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/51:59 pm -
1 stop7h 54m
Sat 9/125:00 am -
2 stops8h 58m
Deal found 8/7![United Airlines logo]()
$398
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 August 9, 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 August 9, 2026.
This Southwest deal was found by Cheapflights users on 8/5. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/91:55 pm -
2 stops11h 20m
Sat 9/1211:30 pm -
2 stops9h 55m
Deal found 8/5![Southwest logo]()
$404
This United Airlines deal was found by Cheapflights users on 8/7. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/96:00 pm -
1 stop7h 52m
Sat 9/128:40 am -
2 stops10h 05m
Deal found 8/7![United Airlines logo]()
$428
This American Airlines deal was found by Cheapflights users on 8/8. 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 9/92:43 pm -
1 stop7h 37m
Sat 9/126:00 am -
1 stop7h 42m
Deal found 8/8![American Airlines logo]()
$467
This Delta deal was found by Cheapflights users on 8/8. 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 10/295:40 am -
1 stop8h 02m
Mon 11/211:46 am -
1 stop8h 16m
Deal found 8/8![Delta logo]()
$467
This Southwest deal was found by Cheapflights users on 8/7. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/114:50 pm -
1 stop7h 25m
Sun 9/1311:30 pm -
2 stops9h 50m
Deal found 8/7![Southwest logo]()
$420
This United Airlines deal was found by Cheapflights users on 8/6. 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.
Sat 9/51:00 pm -
2 stops11h 05m
Sat 9/127:02 am -
1 stop6h 56m
Deal found 8/6![United Airlines logo]()
$479
This Southwest deal was found by Cheapflights users on 8/6. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/161:50 pm -
2 stops11h 30m
Sun 10/185:30 am -
1 stop7h 05m
Deal found 8/6![Southwest logo]()
$461
This Southwest deal was found by Cheapflights users on 8/5. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/45:45 pm -
2 stops9h 00m
Sun 9/66:45 am -
2 stops8h 55m
Deal found 8/5![Southwest logo]()
$466
Last-minute flights from Knoxville to PortlandDiscover last-minute flight deals from Knoxville to Portland. Data last updated August 9, 2026 and is based on user searches.
Discover last-minute flight deals from Knoxville to Portland. Data last updated August 9, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 8/4. 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.
Sat 8/296:00 am -
1 stop7h 27m
Wed 9/210:55 pm -
1 stop7h 41m
Deal found 8/4![Delta logo]()
$423
This Kiwi.com deal was found by Cheapflights users on 8/5. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/307:00 am -
1 stop13h 11m
Sat 9/512:20 pm -
1 stop22h 24m
Deal found 8/5![Multiple Airlines logo]()
$415
This American Airlines deal was found by Cheapflights users on 8/4. 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.
Thu 9/36:52 pm -
1 stop8h 07m
Thu 9/1011:08 pm -
1 stop8h 42m
Deal found 8/4![American Airlines logo]()
$394
This Southwest deal was found by Cheapflights users on 8/4. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/34:50 pm -
1 stop9h 55m
Thu 9/1010:45 pm -
2 stops10h 35m
Deal found 8/4![Southwest logo]()
$399
This American Airlines deal was found by Cheapflights users on 8/5. 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 9/46:52 pm -
1 stop8h 07m
Sun 9/65:59 am -
1 stop9h 22m
Deal found 8/5![American Airlines logo]()
$404
This American Airlines deal was found by Cheapflights users on 8/4. 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.
Sat 9/51:16 pm -
1 stop7h 44m
Sat 9/1212:01 pm -
1 stop8h 21m
Deal found 8/4![American Airlines logo]()
$364
This United Airlines deal was found by Cheapflights users on 8/7. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/51:00 pm -
1 stop10h 10m
Sat 9/127:02 am -
1 stop6h 56m
Deal found 8/7![United Airlines logo]()
$393
This United Airlines deal was found by Cheapflights users on 8/5. 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.
Wed 9/97:15 am -
1 stop7h 39m
Sat 9/125:00 am -
1 stop7h 46m
Deal found 8/5![United Airlines logo]()
$365
This Southwest deal was found by Cheapflights users on 8/7. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/114:50 pm -
1 stop7h 25m
Sun 9/1311:30 pm -
2 stops9h 50m
Deal found 8/7![Southwest logo]()
$420
This Kiwi.com deal was found by Cheapflights users on 8/5. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/277:00 am -
1 stop7h 43m
Sat 10/312:24 pm -
2 stops21h 47m
Deal found 8/5![Multiple Airlines logo]()
$411
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 August 9, 2026.
Search for one-way flight options from Knoxville to Portland. Find affordable one-way fares based on user searches. Data last updated August 9, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/7. 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 9/263:51 pm -
2 stops22h 52m
Deal found 8/7![Multiple Airlines logo]()
$126
This Kiwi.com deal was found by Cheapflights users on 8/7. 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.
Fri 9/258:20 am -
3 stops54h 23m
Deal found 8/7![Multiple Airlines logo]()
$202
This Kiwi.com deal was found by Cheapflights users on 8/5. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/277:00 am -
1 stop7h 43m
Deal found 8/5![Multiple Airlines logo]()
$204
This United Airlines deal was found by Cheapflights users on 8/7. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/261:35 pm -
1 stop9h 35m
Deal found 8/7![United Airlines logo]()
$212
This Delta deal was found by Cheapflights users on 8/7. 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.
Fri 9/2512:23 pm -
1 stop9h 36m
Deal found 8/7![Delta logo]()
$233
This Southwest deal was found by Cheapflights users on 8/7. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/284:50 pm -
2 stops9h 30m
Deal found 8/7![Southwest logo]()
$265
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 August 9, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $319 (Kiwi.com) |
One-way from | $126 (Kiwi.com) |
Popular in | December |
Cheapest in | February |
Average price | $599 |
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 August 9, 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 Knoxville McGhee Tyson - PDX Portland
TYSPDX
Knoxville McGhee Tyson
Wed 9/9
1:55 pm-10:15 pm
2 stops11h 20m
Portland
Sat 9/12
11:30 pm-12:25 pm
2 stops9h 55m
$404
KnoxvillePortland
TYS Knoxville McGhee Tyson - PDX Portland
TYSPDX
Knoxville McGhee Tyson
Fri 9/11
4:50 pm-9:15 pm
1 stop7h 25m
Portland
Sun 9/13
11:30 pm-12:20 pm
2 stops9h 50m
$420
KnoxvillePortland
TYS Knoxville McGhee Tyson - PDX Portland
TYSPDX
Knoxville McGhee Tyson
Wed 9/9
6:00 pm-10:52 pm
1 stop7h 52m
Portland
Sat 9/12
8:40 am-9:45 pm
2 stops10h 05m
$428
KnoxvillePortland
TYS Knoxville McGhee Tyson - PDX Portland
TYSPDX
Knoxville McGhee Tyson
Fri 10/16
1:50 pm-10:20 pm
2 stops11h 30m
Portland
Sun 10/18
5:30 am-3:35 pm
1 stop7h 05m
$461
KnoxvillePortland
TYS Knoxville McGhee Tyson - PDX Portland
TYSPDX
Knoxville McGhee Tyson
Fri 9/4
5:45 pm-11:45 pm
2 stops9h 00m
Portland
Sun 9/6
6:45 am-6:40 pm
2 stops8h 55m
$466
Quickest round-trip
KnoxvillePortland
TYS Knoxville McGhee Tyson - PDX Portland
TYSPDX
Knoxville McGhee Tyson
Wed 9/9
2:43 pm-7:20 pm
1 stop7h 37m
Portland
Sat 9/12
6:00 am-4:42 pm
1 stop7h 42m
$467
KnoxvillePortland
TYS Knoxville McGhee Tyson - PDX Portland
TYSPDX
Knoxville McGhee Tyson
Thu 10/29
5:40 am-10:42 am
1 stop8h 02m
Portland
Mon 11/2
11:46 am-11:02 pm
1 stop8h 16m
$467
KnoxvillePortland
TYS Knoxville McGhee Tyson - PDX Portland
TYSPDX
Knoxville McGhee Tyson
Sat 9/5
1:00 pm-9:05 pm
2 stops11h 05m
Portland
Sat 9/12
7:02 am-4:58 pm
1 stop6h 56m
$479
Cheapest one-way
KnoxvillePortland
TYS Knoxville McGhee Tyson - PDX Portland
TYSPDX
Knoxville McGhee Tyson
Sun 9/27
7:00 am-11:43 am
1 stop7h 43m
$204
KnoxvillePortland
TYS Knoxville McGhee Tyson - PDX Portland
TYSPDX
Knoxville McGhee Tyson
Sat 9/26
1:35 pm-8:10 pm
1 stop9h 35m
$212
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 August.
| 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 82 days in advance of your planned departure date is, on average, the best time to get cheap flights from Knoxville to Portland. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
What is the cheapest month to book a flight from Knoxville to Portland?
Currently, February is the cheapest month in which you can book a flight from Knoxville to Portland (average of $401). Flying from Knoxville to Portland in December is currently the most expensive (average of $625). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
How much does it cost to fly round-trip from Knoxville to Portland?
Airfare is below average for this route at the moment.
Knoxville to Portland flights typically cost between $525 and $662 in September.The cheapest round-trip price found within the last 5 days was $311 on Southwest (Sep 22-Sep 28).
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 August 9, 2026.
Get a feel of what it's like to fly with Delta,United Airlines, andAmerican Airlines from Knoxville to Portland by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Overall
7.8
Boarding
8.1
Food
7.2
Crew
8.5
Entertainment
7.8
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Overall
7.8
Boarding
8.1
Food
7.2
Crew
8.5
Entertainment
7.8
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Overall
7.8
Boarding
8.1
Food
7.2
Crew
8.5
Entertainment
7.8
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Overall
7.8
Boarding
8.1
Food
7.2
Crew
8.5
Entertainment
7.8
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Related info for your journey
Find useful and relevant information for your journey from Knoxville to Portland. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Portland?
Book flights to Portland if you plan to visit one of these locationsBeaverton
Seaside
Lincoln City
Durham
Longview
Lake Oswego
Hillsboro
Kelso
Clackamas
Troutdale
Vancouver
Cannon Beach
McMinnville
The Dalles
Wilsonville
Stevenson
Tillamook
Astoria
Gresham
Silverton
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Knoxville and Portland flights
Browse other Knoxville and Portland flight options. Last updated on August 9, 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 August 9, 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 August 9, 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 August 9, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$298 | Average$509 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$345 | Average$536 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$354 | Average$594 | FlexibilityNo cancel fee | On-timeN/A |