$211+ Cheap flights from Portland to Knoxville (PDX - TYS)
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 6/20. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — TYS
May 22 — May 291
Round-trip
1 adult, Economy
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Find cheap flights from Portland to Knoxville with Cheapflights
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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 Portland to Knoxville
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Last-minute
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Cheapest flights from Portland to KnoxvilleExplore the most affordable flight options available from Portland to Knoxville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 22, 2026.
Explore the most affordable flight options available from Portland to Knoxville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 22, 2026.
This Kiwi.com deal was found by Cheapflights users on 4/21. 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 5/2312:35 pm
PDX
- TYS
1 stop22h 24m
Multiple Airlines
Thu 5/287:00 am
TYS
- PDX
1 stop12h 46m
Multiple Airlines
Deal found 4/21![Multiple Airlines logo]()
$282
This Delta deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/2611:12 pm
PDX
- TYS
1 stop8h 09m
Delta
Wed 5/273:30 pm
TYS
- PDX
1 stop9h 16m
Delta
Deal found 4/21![Delta logo]()
$293
This Kiwi.com deal was found by Cheapflights users on 4/21. 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 5/2412:35 pm
PDX
- TYS
1 stop27h 49m
Multiple Airlines
Thu 5/287:00 am
TYS
- PDX
1 stop12h 46m
Multiple Airlines
Deal found 4/21![Multiple Airlines logo]()
$297
This Kiwi.com deal was found by Cheapflights users on 4/21. 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 5/2312:35 pm
PDX
- TYS
1 stop22h 24m
Multiple Airlines
Fri 5/298:19 pm
TYS
- PDX
2 stops18h 31m
Multiple Airlines
Deal found 4/21![Multiple Airlines logo]()
$314
This Delta deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/262:06 pm
PDX
- TYS
1 stop6h 50m
Delta
Thu 5/286:36 am
TYS
- PDX
1 stop7h 17m
Delta
Deal found 4/21![Delta logo]()
$324
This Kiwi.com deal was found by Cheapflights users on 4/21. 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 5/2412:35 pm
PDX
- TYS
1 stop27h 49m
Frontier
Fri 5/298:19 pm
TYS
- PDX
2 stops18h 31m
Frontier
Deal found 4/21![Frontier logo]()
$329
This Kiwi.com deal was found by Cheapflights users on 4/21. 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 5/2312:35 pm
PDX
- TYS
1 stop22h 24m
Multiple Airlines
Wed 5/272:20 pm
TYS
- PDX
2 stops26h 34m
Multiple Airlines
Deal found 4/21![Multiple Airlines logo]()
$335
This American Airlines deal was found by Cheapflights users on 4/21. 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 5/2311:59 am
PDX
- TYS
1 stop8h 57m
American Airlines
Wed 5/276:20 pm
TYS
- PDX
1 stop8h 32m
American Airlines
Deal found 4/21![American Airlines logo]()
$344
This Delta deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/262:06 pm
PDX
- TYS
1 stop6h 50m
Delta
Fri 5/293:05 pm
TYS
- PDX
1 stop9h 57m
Delta
Deal found 4/21![Delta logo]()
$354
Best flights from Portland to KnoxvilleDiscover carefully curated flight deals from Portland to Knoxville that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 22, 2026.
Discover carefully curated flight deals from Portland to Knoxville that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 22, 2026.
This United Airlines deal was found by Cheapflights users on 4/21. 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 8/117:13 pm
PDX
- TYS
2 stops11h 55m
United Airlines
Wed 8/124:56 pm
TYS
- PDX
1 stop8h 56m
United Airlines
Deal found 4/21![United Airlines logo]()
$439
This Southwest deal was found by Cheapflights users on 4/22. 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.
Sat 9/1911:30 pm
PDX
- TYS
2 stops9h 55m
Southwest
Sat 9/266:50 am
TYS
- PDX
2 stops10h 10m
Southwest
Deal found 4/22![Southwest logo]()
$515
This Kiwi.com deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/235:20 pm
PDX
- TYS
1 stop23h 17m
Multiple Airlines
Sun 6/287:00 am
TYS
- PDX
1 stop12h 57m
Multiple Airlines
Deal found 4/22![Multiple Airlines logo]()
$516
This Delta deal was found by Cheapflights users on 4/19. 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 5/222:06 pm
PDX
- TYS
1 stop6h 50m
Delta
Mon 5/255:40 am
TYS
- PDX
1 stop7h 26m
Delta
Deal found 4/19![Delta logo]()
$529
This Alaska Airlines deal was found by Cheapflights users on 4/17. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1210:45 am
PDX
- TYS
2 stops20h 58m
Alaska Airlines
Tue 9/2211:42 am
TYS
- PDX
1 stop7h 48m
Alaska Airlines
Deal found 4/17![Alaska Airlines logo]()
$572
This United Airlines deal was found by Cheapflights users on 4/17. 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 5/2711:30 pm
PDX
- TYS
1 stop8h 12m
United Airlines
Sat 5/306:02 pm
TYS
- PDX
1 stop7h 29m
United Airlines
Deal found 4/17![United Airlines logo]()
$500
This Alaska Airlines deal was found by Cheapflights users on 4/18. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/2710:30 am
PDX
- TYS
1 stop8h 27m
Alaska Airlines
Sat 5/301:12 pm
TYS
- PDX
2 stops13h 47m
Alaska Airlines
Deal found 4/18![Alaska Airlines logo]()
$572
This United Airlines deal was found by Cheapflights users on 4/17. 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.
Thu 5/711:55 pm
PDX
- TYS
1 stop7h 11m
United Airlines
Sun 5/102:25 pm
TYS
- PDX
1 stop9h 17m
United Airlines
Deal found 4/17![United Airlines logo]()
$569
This Alaska Airlines deal was found by Cheapflights users on 4/18. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/287:40 am
PDX
- TYS
1 stop26h 30m
Alaska Airlines
Wed 6/37:10 am
TYS
- PDX
2 stops12h 40m
Alaska Airlines
Deal found 4/18![Alaska Airlines logo]()
$572
Last-minute flights from Portland to KnoxvilleDiscover last-minute flight deals from Portland to Knoxville. Data last updated April 22, 2026 and is based on user searches.
Discover last-minute flight deals from Portland to Knoxville. Data last updated April 22, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 4/21. 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 5/2312:35 pm
PDX
- TYS
1 stop22h 24m
Multiple Airlines
Thu 5/287:00 am
TYS
- PDX
1 stop12h 46m
Multiple Airlines
Deal found 4/21![Multiple Airlines logo]()
$282
This Kiwi.com deal was found by Cheapflights users on 4/21. 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 5/2312:35 pm
PDX
- TYS
1 stop22h 24m
Multiple Airlines
Fri 5/298:19 pm
TYS
- PDX
2 stops18h 31m
Multiple Airlines
Deal found 4/21![Multiple Airlines logo]()
$314
This Kiwi.com deal was found by Cheapflights users on 4/21. 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 5/2312:35 pm
PDX
- TYS
1 stop22h 24m
Multiple Airlines
Wed 5/272:20 pm
TYS
- PDX
2 stops26h 34m
Multiple Airlines
Deal found 4/21![Multiple Airlines logo]()
$335
This American Airlines deal was found by Cheapflights users on 4/21. 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 5/2311:59 am
PDX
- TYS
1 stop8h 57m
American Airlines
Wed 5/276:20 pm
TYS
- PDX
1 stop8h 32m
American Airlines
Deal found 4/21![American Airlines logo]()
$344
This Kiwi.com deal was found by Cheapflights users on 4/21. 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 5/2412:35 pm
PDX
- TYS
1 stop27h 49m
Multiple Airlines
Thu 5/287:00 am
TYS
- PDX
1 stop12h 46m
Multiple Airlines
Deal found 4/21![Multiple Airlines logo]()
$297
This Kiwi.com deal was found by Cheapflights users on 4/21. 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 5/2412:35 pm
PDX
- TYS
1 stop27h 49m
Frontier
Fri 5/298:19 pm
TYS
- PDX
2 stops18h 31m
Frontier
Deal found 4/21![Frontier logo]()
$329
This Delta deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/2611:12 pm
PDX
- TYS
1 stop8h 09m
Delta
Wed 5/273:30 pm
TYS
- PDX
1 stop9h 16m
Delta
Deal found 4/21![Delta logo]()
$293
This Delta deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/262:06 pm
PDX
- TYS
1 stop6h 50m
Delta
Thu 5/286:36 am
TYS
- PDX
1 stop7h 17m
Delta
Deal found 4/21![Delta logo]()
$324
This Delta deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/262:06 pm
PDX
- TYS
1 stop6h 50m
Delta
Fri 5/293:05 pm
TYS
- PDX
1 stop9h 57m
Delta
Deal found 4/21![Delta logo]()
$354
One-way flights from Portland to KnoxvilleSearch for one-way flight options from Portland to Knoxville. Find affordable one-way fares based on user searches. Data last updated April 22, 2026.
Search for one-way flight options from Portland to Knoxville. Find affordable one-way fares based on user searches. Data last updated April 22, 2026.
This Kiwi.com deal was found by Cheapflights users on 4/19. 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 6/205:42 pm
PDX
- TYS
3 stops50h 56m
Multiple Airlines
Deal found 4/19![Multiple Airlines logo]()
$211
This American Airlines deal was found by Cheapflights users on 4/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/136:00 am
PDX
- TYS
1 stop9h 04m
American Airlines
Deal found 4/20![American Airlines logo]()
$222
This American Airlines deal was found by Cheapflights users on 4/17. 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.
Fri 7/3112:59 am
PDX
- TYS
1 stop8h 52m
American Airlines
Deal found 4/17![American Airlines logo]()
$229
This Southwest deal was found by Cheapflights users on 4/21. 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.
Tue 10/611:35 pm
PDX
- TYS
2 stops9h 30m
Southwest
Deal found 4/21![Southwest logo]()
$234
This Delta deal was found by Cheapflights users on 4/19. 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 6/1911:15 pm
PDX
- TYS
1 stop7h 56m
Delta
Deal found 4/19![Delta logo]()
$250
This American Airlines deal was found by Cheapflights users on 4/21. 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 6/1512:40 am
PDX
- TYS
1 stop9h 23m
American Airlines
Deal found 4/21![American Airlines logo]()
$255
This American Airlines deal was found by Cheapflights users on 4/19. 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 6/1912:40 am
PDX
- TYS
1 stop9h 23m
American Airlines
Deal found 4/19![American Airlines logo]()
$268
This Southwest deal was found by Cheapflights users on 4/19. 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 10/15:20 am
PDX
- TYS
2 stops10h 20m
Southwest
Deal found 4/19![Southwest logo]()
$274
Find flight deals from Portland to Knoxville
Discover tips and strategies to find the most affordable flight options for your journey from Portland (PDX) to Knoxville (TYS). 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 April 22, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $282 (Kiwi.com) |
One-way from | $211 (Kiwi.com) |
Popular in | March |
Cheapest in | August |
Average price | $459 |
Cheapflights Fare Finder
Customize your flight search to find flights from Portland to Knoxville 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 April 22, 2026.
Use the filters below to find and compare flights from Portland to Knoxville that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
PortlandKnoxville
PDX - TYS
PDXTYS
Portland
Tue 8/11
7:13 pm-10:08 am
2 stops11h 55m
Knoxville McGhee Tyson
Wed 8/12
4:56 pm-10:52 pm
1 stop8h 56m
$439
PortlandKnoxville
PDX - TYS
PDXTYS
Portland
Wed 5/27
11:30 pm-10:42 am
1 stop8h 12m
Knoxville McGhee Tyson
Sat 5/30
6:02 pm-10:31 pm
1 stop7h 29m
$500
PortlandKnoxville
PDX - TYS
PDXTYS
Portland
Sat 9/19
11:30 pm-12:25 pm
2 stops9h 55m
Knoxville McGhee Tyson
Sat 9/26
6:50 am-2:00 pm
2 stops10h 10m
$515
PortlandKnoxville
PDX - TYS
PDXTYS
Portland
Tue 6/23
5:20 pm-7:37 pm
1 stop23h 17m
Knoxville McGhee Tyson
Sun 6/28
7:00 am-4:57 pm
1 stop12h 57m
$516
Quickest round-trip
PortlandKnoxville
PDX - TYS
PDXTYS
Portland
Fri 5/22
2:06 pm-11:56 pm
1 stop6h 50m
Knoxville McGhee Tyson
Mon 5/25
5:40 am-10:06 am
1 stop7h 26m
$529
PortlandKnoxville
PDX - TYS
PDXTYS
Portland
Thu 5/7
11:55 pm-10:06 am
1 stop7h 11m
Knoxville McGhee Tyson
Sun 5/10
2:25 pm-8:42 pm
1 stop9h 17m
$569
PortlandKnoxville
PDX - TYS
PDXTYS
Portland
Sat 9/12
10:45 am-10:43 am
2 stops20h 58m
Knoxville McGhee Tyson
Tue 9/22
11:42 am-4:30 pm
1 stop7h 48m
$572
PortlandKnoxville
PDX - TYS
PDXTYS
Portland
Wed 5/27
10:30 am-9:57 pm
1 stop8h 27m
Knoxville McGhee Tyson
Sat 5/30
1:12 pm-11:59 pm
2 stops13h 47m
$572
PortlandKnoxville
PDX - TYS
PDXTYS
Portland
Thu 5/28
7:40 am-1:10 pm
1 stop26h 30m
Knoxville McGhee Tyson
Wed 6/3
7:10 am-4:50 pm
2 stops12h 40m
$572
Cheapest one-way
PortlandKnoxville
PDX - TYS
PDXTYS
Portland
Fri 7/31
12:59 am-12:51 pm
1 stop8h 52m
$229
Showing 1-10 of 21 resultsSorted by cheapest first
Compare providers for flights from Portland to Knoxville
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 Portland to Knoxville in April.
| 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 Portland-Knoxville flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Portland-Knoxville flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Portland-Knoxville flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Portland-Knoxville 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 Portland-Knoxville 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 Portland to Knoxville
Have a flexible travel schedule? Discover the best time to fly to Knoxville from Portland with our price prediction graph.
PDX-TYS
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 Portland to Knoxville
How far ahead should I book a flight from Portland to Knoxville?
Use this chart to determine the optimal time to book a round-trip flight from Portland to Knoxville. Price data was last updated on April 17, 2026.
The best time to book flights from Portland to Knoxville is 75 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
What is the cheapest month to book a flight from Portland to Knoxville?
Currently, August is the cheapest month in which you can book a flight from Portland to Knoxville (average of $383). Flying from Portland to Knoxville in March is currently the most expensive (average of $582). 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 Portland to Knoxville?
Reviews of airlines servicing Knoxville
Get insights into the airlines that provide service to Knoxville. 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 Knoxville. Reviews last updated April 22, 2026.
Read through reviews of airlines operating flights from Portland to Knoxville, such as Delta,United Airlines, andAmerican Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.1
Entertainment
7.8
Food
7.2
Crew
8.5
Comfort
7.9
Overall
7.9
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Boarding
8.1
Entertainment
7.8
Food
7.2
Crew
8.5
Comfort
7.9
Overall
7.9
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Boarding
8.1
Entertainment
7.8
Food
7.2
Crew
8.5
Comfort
7.9
Overall
7.9
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Boarding
8.1
Entertainment
7.8
Food
7.2
Crew
8.5
Comfort
7.9
Overall
7.9
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Boarding
8.1
Entertainment
7.8
Food
7.2
Crew
8.5
Comfort
7.9
Overall
7.9
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Related info for your journey
Find useful and relevant information for your journey from Portland to Knoxville. 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 Knoxville?
Book flights to Knoxville if you plan to visit one of these locationsCherokee
Crossville
Morristown
Bryson City
Alcoa
Murphy
Oak Ridge
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Alternative routes for Portland to Knoxville
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Complete your trip
Complete your trip to Knoxville by adding a car rental and/or hotel reservation to your travel itinerary.
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Other flights to Knoxville
Explore flights to Knoxville departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on April 22, 2026.
Portland and Knoxville flights
Browse other Portland and Knoxville flight options. Last updated on April 22, 2026.
Other flights from Portland
Browse through other flights departing from Portland. Flights are based on user searches made on Cheapflights and were last updated on April 22, 2026.
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Check out other popular destinations found by fellow travelers in 2026
Top 4 airlines flying from Portland to Knoxville
Discover the top 4 airlines that operate flights from Portland to Knoxville. 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 April 22, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$256 | Average$429 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$264 | Average$343 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$279 | Average$498 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$304 | Average$458 | FlexibilityNo cancel fee | On-time71% |