$150+ Cheap flights from Knoxville to Portland, ME (TYS - PWM)
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 9/1. Fares are subject to change and may not be available on all flights or dates of travel.
TYS — PWM
Sep 6 — Sep 131
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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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 7, 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 7, 2026.
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/76:00 am -
1 stop4h 21m
Fri 9/1112:55 pm -
1 stop7h 01m
Deal found 8/5![Delta logo]()
$287
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 9/21:53 pm -
1 stop7h 30m
Wed 9/94:57 pm -
1 stop5h 52m
Deal found 8/5![United Airlines logo]()
$292
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.
Tue 9/154:40 pm -
1 stop6h 48m
Tue 9/226:00 am -
1 stop5h 18m
Deal found 8/4![Delta logo]()
$299
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/156:00 am -
2 stops8h 38m
Tue 9/224:57 pm -
1 stop7h 26m
Deal found 8/4![United Airlines logo]()
$304
This American Airlines deal was found by Cheapflights users on 8/3. 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 9/197:00 am -
1 stop5h 12m
Sat 9/266:00 am -
1 stop5h 26m
Deal found 8/3![American Airlines logo]()
$321
This United Airlines deal was found by Cheapflights users on 8/3. 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 9/75:45 am -
1 stop4h 19m
Fri 9/113:47 pm -
2 stops8h 12m
Deal found 8/3![United Airlines logo]()
$324
This Southwest deal was found by Cheapflights users on 8/3. 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 10/201:00 pm -
2 stops9h 35m
Sat 10/245:35 am -
2 stops11h 10m
Deal found 8/3![Southwest logo]()
$331
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.
Tue 9/221:10 pm -
1 stop6h 14m
Sat 9/2610:43 am -
1 stop4h 52m
Deal found 8/5![United Airlines logo]()
$333
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/121:40 pm -
1 stop7h 35m
Sun 9/206:00 am -
1 stop5h 18m
Deal found 8/5![Delta logo]()
$336
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 7, 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 7, 2026.
This United Airlines deal was found by Cheapflights users on 8/2. 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 9/75:45 am -
1 stop4h 19m
Fri 9/114:57 pm -
1 stop5h 52m
Deal found 8/2![United Airlines logo]()
$287
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/67:15 am -
1 stop4h 47m
Thu 9/106:30 am -
1 stop4h 34m
Deal found 8/5![Delta logo]()
$287
This American Airlines deal was found by Cheapflights users on 8/2. 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 9/197:00 am -
1 stop5h 12m
Sat 9/267:00 am -
1 stop5h 01m
Deal found 8/2![American Airlines logo]()
$299
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.
Thu 8/271:53 pm -
1 stop7h 30m
Sat 8/296:03 am -
1 stop7h 15m
Deal found 8/6![United Airlines logo]()
$299
This United Airlines deal was found by Cheapflights users on 8/3. 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 9/27:00 am -
2 stops7h 38m
Wed 9/93:43 pm -
2 stops8h 16m
Deal found 8/3![United Airlines logo]()
$302
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/146:13 pm -
1 stop5h 15m
Fri 9/181:59 pm -
1 stop7h 05m
Deal found 8/6![Delta logo]()
$379
This United Airlines deal was found by Cheapflights users on 8/3. 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.
Sun 9/65:45 am -
1 stop4h 19m
Thu 9/104:57 pm -
1 stop5h 52m
Deal found 8/3![United Airlines logo]()
$360
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 9/197:20 pm -
1 stop4h 39m
Sat 9/265:15 am -
2 stops10h 20m
Deal found 8/6![United Airlines logo]()
$384
Last-minute flights from Knoxville to PortlandDiscover last-minute flight deals from Knoxville to Portland. Data last updated August 7, 2026 and is based on user searches.
Discover last-minute flight deals from Knoxville to Portland. Data last updated August 7, 2026 and is based on user searches.
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 9/21:53 pm -
1 stop7h 30m
Wed 9/94:57 pm -
1 stop5h 52m
Deal found 8/5![United Airlines logo]()
$292
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/76:00 am -
1 stop4h 21m
Fri 9/1112:55 pm -
1 stop7h 01m
Deal found 8/5![Delta logo]()
$287
This United Airlines deal was found by Cheapflights users on 8/3. 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 9/75:45 am -
1 stop4h 19m
Fri 9/113:47 pm -
2 stops8h 12m
Deal found 8/3![United Airlines logo]()
$324
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/121:40 pm -
1 stop7h 35m
Sun 9/206:00 am -
1 stop5h 18m
Deal found 8/5![Delta logo]()
$336
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/135:15 pm -
1 stop6h 02m
Wed 9/231:59 pm -
1 stop7h 05m
Deal found 8/5![Delta logo]()
$343
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.
Tue 9/154:40 pm -
1 stop6h 48m
Tue 9/226:00 am -
1 stop5h 18m
Deal found 8/4![Delta logo]()
$299
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/156:00 am -
2 stops8h 38m
Tue 9/224:57 pm -
1 stop7h 26m
Deal found 8/4![United Airlines logo]()
$304
This American Airlines deal was found by Cheapflights users on 8/3. 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 9/197:00 am -
1 stop5h 12m
Sat 9/266:00 am -
1 stop5h 26m
Deal found 8/3![American Airlines logo]()
$321
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.
Tue 9/221:10 pm -
1 stop6h 14m
Sat 9/2610:43 am -
1 stop4h 52m
Deal found 8/5![United Airlines logo]()
$333
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 7, 2026.
Search for one-way flight options from Knoxville to Portland. Find affordable one-way fares based on user searches. Data last updated August 7, 2026.
This American Airlines deal was found by Cheapflights users on 8/3. 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 9/17:31 pm -
1 stop4h 16m
Deal found 8/3![American Airlines logo]()
$150
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.
Tue 9/19:45 am -
2 stops8h 44m
Deal found 8/6![United Airlines logo]()
$155
This American Airlines deal was found by Cheapflights users on 8/3. 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 9/174:30 pm -
1 stop5h 25m
Deal found 8/3![American Airlines logo]()
$172
This Kiwi.com deal was found by Cheapflights users on 8/3. 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 9/171:19 pm -
3 stops34h 05m
Deal found 8/3![Multiple Airlines logo]()
$180
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.
Mon 10/127:25 pm -
2 stops15h 30m
Deal found 8/4![Southwest logo]()
$183
This Kiwi.com deal was found by Cheapflights users on 8/3. 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 8/216:27 pm -
1 stop16h 00m
Deal found 8/3![Multiple Airlines logo]()
$185
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.
Sun 10/116:23 pm -
1 stop5h 12m
Deal found 8/4![Delta logo]()
$194
This Kiwi.com deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/312:49 pm -
3 stops25h 10m
Deal found 8/3![Multiple Airlines logo]()
$196
This Delta deal was found by Cheapflights users on 8/2. 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.
Sun 8/304:38 pm -
1 stop6h 35m
Deal found 8/2![Delta logo]()
$214
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 (PWM). 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 7, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $287 (Delta) |
One-way from | $150 (American Airlines) |
Popular in | November |
Cheapest in | March |
Average price | $376 |
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 7, 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 - PWM Portland
TYSPWM
Knoxville McGhee Tyson
Mon 9/7
5:45 am-10:04 am
1 stop4h 19m
Portland
Fri 9/11
4:57 pm-10:49 pm
1 stop5h 52m
$287
Quickest round-trip
KnoxvillePortland
TYS Knoxville McGhee Tyson - PWM Portland
TYSPWM
Knoxville McGhee Tyson
Sun 9/6
7:15 am-12:02 pm
1 stop4h 47m
Portland
Thu 9/10
6:30 am-11:04 am
1 stop4h 34m
$287
KnoxvillePortland
TYS Knoxville McGhee Tyson - PWM Portland
TYSPWM
Knoxville McGhee Tyson
Sat 9/19
7:00 am-12:12 pm
1 stop5h 12m
Portland
Sat 9/26
7:00 am-12:01 pm
1 stop5h 01m
$299
KnoxvillePortland
TYS Knoxville McGhee Tyson - PWM Portland
TYSPWM
Knoxville McGhee Tyson
Thu 8/27
1:53 pm-9:23 pm
1 stop7h 30m
Portland
Sat 8/29
6:03 am-1:18 pm
1 stop7h 15m
$299
KnoxvillePortland
TYS Knoxville McGhee Tyson - PWM Portland
TYSPWM
Knoxville McGhee Tyson
Wed 9/2
7:00 am-2:38 pm
2 stops7h 38m
Portland
Wed 9/9
3:43 pm-11:59 pm
2 stops8h 16m
$302
KnoxvillePortland
TYS Knoxville McGhee Tyson - PWM Portland
TYSPWM
Knoxville McGhee Tyson
Sun 9/6
5:45 am-10:04 am
1 stop4h 19m
Portland
Thu 9/10
4:57 pm-10:49 pm
1 stop5h 52m
$360
KnoxvillePortland
TYS Knoxville McGhee Tyson - PWM Portland
TYSPWM
Knoxville McGhee Tyson
Mon 9/14
6:13 pm-11:28 pm
1 stop5h 15m
Portland
Fri 9/18
1:59 pm-9:04 pm
1 stop7h 05m
$379
KnoxvillePortland
TYS Knoxville McGhee Tyson - PWM Portland
TYSPWM
Knoxville McGhee Tyson
Sat 9/19
7:20 pm-11:59 pm
1 stop4h 39m
Portland
Sat 9/26
5:15 am-3:35 pm
2 stops10h 20m
$384
Cheapest one-way
KnoxvillePortland
TYS Knoxville McGhee Tyson - PWM Portland
TYSPWM
Knoxville McGhee Tyson
Mon 8/31
7:00 am-2:38 pm
2 stops7h 38m
$155
KnoxvillePortland
TYS Knoxville McGhee Tyson - PWM Portland
TYSPWM
Knoxville McGhee Tyson
Tue 9/1
9:45 am-6:29 pm
2 stops8h 44m
$155
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, Maine flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Knoxville-Portland, Maine flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Knoxville-Portland, Maine flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Knoxville-Portland, Maine 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, Maine 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-PWM
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
What is the cheapest month to book a flight from Knoxville to Portland, Maine?
Currently, March is the cheapest month in which you can book a flight from Knoxville to Portland, Maine (average of $314). Flying from Knoxville to Portland, Maine in November is currently the most expensive (average of $675). 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, Maine?
Airfare is below average for this route at the moment.
Knoxville to Portland, Maine flights typically cost between $328 and $560 in September.The cheapest round-trip price found within the last 5 days was $287 on Delta (Sep 7-Sep 11).
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 7, 2026.
Read reviews from past customers who have flown Southwest,Delta, andAmerican Airlines from Knoxville to Portland. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Overall
8.0
Comfort
8.0
Crew
8.6
Entertainment
7.5
Boarding
8.1
Food
7.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Overall
8.0
Comfort
8.0
Crew
8.6
Entertainment
7.5
Boarding
8.1
Food
7.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Overall
8.0
Comfort
8.0
Crew
8.6
Entertainment
7.5
Boarding
8.1
Food
7.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Overall
8.0
Comfort
8.0
Crew
8.6
Entertainment
7.5
Boarding
8.1
Food
7.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
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 locationsNorth Conway
Lewiston
Brunswick
Conway
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Knoxville and Portland flights
Browse other Knoxville and Portland flight options. Last updated on August 7, 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 7, 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 7, 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 7, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$278 | Average$493 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$282 | Average$416 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$293 | Average$368 | FlexibilityNo cancel fee | On-time63% |