$144+ 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 8/17. Fares are subject to change and may not be available on all flights or dates of travel.
TYS — PWM
Jul 4 — Jul 111
Round-trip
1 adult, Economy
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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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Cheapest flights from Knoxville to PortlandExplore the most affordable flight options available from Knoxville to Portland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 4, 2026.
Explore the most affordable flight options available from Knoxville to Portland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 4, 2026.
This Delta deal was found by Cheapflights users on 6/1. 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 8/265:15 pm
TYS
- PWM
1 stop6h 15m
Delta
Mon 8/316:05 am
PWM
- TYS
1 stop5h 06m
Delta
Deal found 6/1![Delta logo]()
$253
This Delta deal was found by Cheapflights users on 6/1. 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 8/154:15 pm
TYS
- PWM
1 stop5h 18m
Delta
Sat 8/226:10 am
PWM
- TYS
1 stop4h 48m
Delta
Deal found 6/1![Delta logo]()
$287
This Southwest deal was found by Cheapflights users on 6/1. 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 9/57:50 am
TYS
- PWM
1 stop3h 55m
Southwest
Wed 9/97:45 am
PWM
- TYS
2 stops11h 10m
Southwest
Deal found 6/1![Southwest logo]()
$292
This Delta deal was found by Cheapflights users on 5/31. 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 9/186:11 pm
TYS
- PWM
1 stop5h 14m
Delta
Mon 9/216:05 am
PWM
- TYS
1 stop5h 00m
Delta
Deal found 5/31![Delta logo]()
$315
This Southwest deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/268:00 am
TYS
- PWM
1 stop4h 25m
Southwest
Mon 8/315:55 am
PWM
- TYS
2 stops11h 15m
Southwest
Deal found 6/1![Southwest logo]()
$320
This Delta deal was found by Cheapflights users on 6/1. 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 9/264:25 pm
TYS
- PWM
1 stop5h 00m
Delta
Sat 10/36:30 am
PWM
- TYS
1 stop4h 34m
Delta
Deal found 6/1![Delta logo]()
$327
This Delta deal was found by Cheapflights users on 6/3. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/2411:41 am
TYS
- PWM
1 stop4h 14m
Delta
Wed 7/16:57 pm
PWM
- TYS
1 stop4h 57m
Delta
Deal found 6/3![Delta logo]()
$331
This Southwest deal was found by Cheapflights users on 6/1. 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 7/812:45 pm
TYS
- PWM
2 stops10h 15m
Southwest
Tue 7/143:45 pm
PWM
- TYS
1 stop5h 35m
Southwest
Deal found 6/1![Southwest logo]()
$336
This Southwest deal was found by Cheapflights users on 6/2. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/3012:45 pm
TYS
- PWM
2 stops10h 10m
Southwest
Tue 7/75:30 am
PWM
- TYS
2 stops6h 35m
Southwest
Deal found 6/2![Southwest logo]()
$341
This American Airlines deal was found by Cheapflights users on 5/31. 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 9/198:18 am
TYS
- PWM
1 stop4h 22m
American Airlines
Sat 9/266:00 am
PWM
- TYS
1 stop5h 26m
American Airlines
Deal found 5/31![American Airlines logo]()
$343
Best flights from Knoxville to PortlandDiscover carefully curated flight deals from Knoxville to Portland that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 4, 2026.
Discover carefully curated flight deals from Knoxville to Portland that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 4, 2026.
This Delta deal was found by Cheapflights users on 6/2. 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.
Sat 8/155:00 pm
TYS
- PWM
1 stop4h 31m
Delta
Wed 8/196:05 am
PWM
- TYS
1 stop5h 06m
Delta
Deal found 6/2![Delta logo]()
$349
This United Airlines deal was found by Cheapflights users on 6/2. 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.
Sat 7/117:19 pm
TYS
- PWM
1 stop4h 32m
United Airlines
Tue 7/145:15 am
PWM
- TYS
1 stop5h 27m
United Airlines
Deal found 6/2![United Airlines logo]()
$354
This Southwest deal was found by Cheapflights users on 6/3. 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.
Sat 7/111:35 pm
TYS
- PWM
2 stops10h 10m
Southwest
Tue 7/215:30 am
PWM
- TYS
2 stops6h 35m
Southwest
Deal found 6/3![Southwest logo]()
$364
This Delta deal was found by Cheapflights users on 6/2. 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.
Thu 8/134:38 pm
TYS
- PWM
1 stop6h 35m
Delta
Wed 8/1911:01 am
PWM
- TYS
1 stop5h 32m
Delta
Deal found 6/2![Delta logo]()
$349
This Southwest deal was found by Cheapflights users on 6/2. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/111:35 pm
TYS
- PWM
2 stops10h 10m
Southwest
Tue 7/145:30 am
PWM
- TYS
2 stops6h 35m
Southwest
Deal found 6/2![Southwest logo]()
$364
This Delta deal was found by Cheapflights users on 6/3. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/1110:54 am
TYS
- PWM
1 stop5h 23m
Delta
Tue 7/216:00 am
PWM
- TYS
1 stop5h 10m
Delta
Deal found 6/3![Delta logo]()
$354
This Southwest deal was found by Cheapflights users on 6/1. 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 7/158:10 am
TYS
- PWM
1 stop4h 15m
Southwest
Mon 7/205:20 pm
PWM
- TYS
1 stop5h 15m
Southwest
Deal found 6/1![Southwest logo]()
$374
This Delta deal was found by Cheapflights users on 5/30. 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 6/243:54 pm
TYS
- PWM
1 stop7h 11m
Delta
Mon 6/296:00 am
PWM
- TYS
1 stop4h 47m
Delta
Deal found 5/30![Delta logo]()
$354
This Southwest deal was found by Cheapflights users on 6/2. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/138:25 am
TYS
- PWM
1 stop4h 00m
Southwest
Thu 8/133:40 pm
PWM
- TYS
1 stop4h 15m
Southwest
Deal found 6/2![Southwest logo]()
$392
This Delta deal was found by Cheapflights users on 6/4. 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.
Thu 7/910:26 am
TYS
- PWM
1 stop7h 28m
Delta
Mon 7/136:00 am
PWM
- TYS
1 stop5h 10m
Delta
Deal found 6/4![Delta logo]()
$397
Last-minute flights from Knoxville to PortlandDiscover last-minute flight deals from Knoxville to Portland. Data last updated June 4, 2026 and is based on user searches.
Discover last-minute flight deals from Knoxville to Portland. Data last updated June 4, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 6/3. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/2411:41 am
TYS
- PWM
1 stop4h 14m
Delta
Wed 7/16:57 pm
PWM
- TYS
1 stop4h 57m
Delta
Deal found 6/3![Delta logo]()
$331
This Delta deal was found by Cheapflights users on 6/2. 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.
Wed 6/243:54 pm
TYS
- PWM
1 stop7h 11m
Delta
Mon 6/294:45 pm
PWM
- TYS
1 stop4h 56m
Delta
Deal found 6/2![Delta logo]()
$374
This Southwest deal was found by Cheapflights users on 6/2. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/3012:45 pm
TYS
- PWM
2 stops10h 10m
Southwest
Tue 7/75:30 am
PWM
- TYS
2 stops6h 35m
Southwest
Deal found 6/2![Southwest logo]()
$341
This Southwest deal was found by Cheapflights users on 6/2. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/18:10 am
TYS
- PWM
2 stops13h 20m
Southwest
Wed 7/83:45 pm
PWM
- TYS
1 stop5h 35m
Southwest
Deal found 6/2![Southwest logo]()
$376
This Delta deal was found by Cheapflights users on 6/2. 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.
Sat 7/410:51 am
TYS
- PWM
1 stop5h 33m
Delta
Tue 7/146:59 pm
PWM
- TYS
1 stop4h 53m
Delta
Deal found 6/2![Delta logo]()
$354
This Delta deal was found by Cheapflights users on 6/2. 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.
Sat 7/47:15 am
TYS
- PWM
1 stop4h 42m
Delta
Sat 7/116:59 pm
PWM
- TYS
1 stop4h 45m
Delta
Deal found 6/2![Delta logo]()
$377
This Southwest deal was found by Cheapflights users on 6/1. 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 7/812:45 pm
TYS
- PWM
2 stops10h 15m
Southwest
Tue 7/143:45 pm
PWM
- TYS
1 stop5h 35m
Southwest
Deal found 6/1![Southwest logo]()
$336
This Southwest deal was found by Cheapflights users on 6/2. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/111:35 pm
TYS
- PWM
2 stops10h 10m
Southwest
Tue 7/145:30 am
PWM
- TYS
2 stops6h 35m
Southwest
Deal found 6/2![Southwest logo]()
$364
This Southwest deal was found by Cheapflights users on 6/4. 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.
Wed 7/1512:45 pm
TYS
- PWM
2 stops10h 15m
Southwest
Tue 7/215:30 am
PWM
- TYS
2 stops11h 30m
Southwest
Deal found 6/4![Southwest logo]()
$347
This Southwest deal was found by Cheapflights users on 6/1. 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 7/1512:45 pm
TYS
- PWM
2 stops10h 15m
Southwest
Mon 7/205:20 pm
PWM
- TYS
1 stop5h 15m
Southwest
Deal found 6/1![Southwest logo]()
$379
One-way flights from Knoxville to PortlandSearch for one-way flight options from Knoxville to Portland. Find affordable one-way fares based on user searches. Data last updated June 4, 2026.
Search for one-way flight options from Knoxville to Portland. Find affordable one-way fares based on user searches. Data last updated June 4, 2026.
This American Airlines deal was found by Cheapflights users on 6/1. 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 8/177:31 pm
TYS
- PWM
1 stop4h 28m
American Airlines
Deal found 6/1![American Airlines logo]()
$144
This Southwest deal was found by Cheapflights users on 6/1. 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 8/178:25 am
TYS
- PWM
2 stops13h 05m
Southwest
Deal found 6/1![Southwest logo]()
$155
This Southwest deal was found by Cheapflights users on 6/1. 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 7/158:10 am
TYS
- PWM
1 stop4h 15m
Southwest
Deal found 6/1![Southwest logo]()
$166
This deal was found by Cheapflights users on 5/31. 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.
Mon 8/177:20 pm
TYS
- PWM
1 stop4h 39m
United Airlines
Deal found 5/31![United Airlines logo]()
$184
This Delta deal was found by Cheapflights users on 6/1. 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 7/196:05 am
TYS
- PWM
1 stop6h 22m
Delta
Deal found 6/1![Delta logo]()
$189
This Southwest deal was found by Cheapflights users on 6/2. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/212:35 pm
TYS
- PWM
2 stops11h 30m
Southwest
Deal found 6/2![Southwest logo]()
$224
This Southwest deal was found by Cheapflights users on 5/30. 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.
Sun 7/198:00 am
TYS
- PWM
1 stop5h 50m
Southwest
Deal found 5/30![Southwest logo]()
$226
This United Airlines deal was found by Cheapflights users on 6/2. 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.
Thu 7/27:19 pm
TYS
- PWM
1 stop4h 32m
United Airlines
Deal found 6/2![United Airlines logo]()
$236
This Delta deal was found by Cheapflights users on 5/30. 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 6/146:00 am
TYS
- PWM
1 stop4h 33m
Delta
Deal found 5/30![Delta logo]()
$239
This Kiwi.com deal was found by Cheapflights users on 6/1. 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 8/178:35 am
TYS
- PWM
3 stops14h 03m
Multiple Airlines
Deal found 6/1![Multiple Airlines logo]()
$247
This Kiwi.com deal was found by Cheapflights users on 5/30. 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 7/198:15 am
TYS
- PWM
2 stops29h 54m
Multiple Airlines
Deal found 5/30![Multiple Airlines logo]()
$248
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 June 4, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $253 (Delta) |
One-way from | $144 (American Airlines) |
Popular in | November |
Cheapest in | December |
Average price | $414 |
Cheapflights Fare Finder
Customize your flight search to find flights from Knoxville to Portland that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 4, 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 - PWM
TYSPWM
Knoxville McGhee Tyson
Sat 8/15
5:00 pm-9:31 pm
1 stop4h 31m
Portland
Wed 8/19
6:05 am-11:11 am
1 stop5h 06m
$349
KnoxvillePortland
TYS - PWM
TYSPWM
Knoxville McGhee Tyson
Thu 8/13
4:38 pm-11:13 pm
1 stop6h 35m
Portland
Wed 8/19
11:01 am-4:33 pm
1 stop5h 32m
$349
KnoxvillePortland
TYS - PWM
TYSPWM
Knoxville McGhee Tyson
Sat 7/11
7:19 pm-11:51 pm
1 stop4h 32m
Portland
Tue 7/14
5:15 am-10:42 am
1 stop5h 27m
$354
KnoxvillePortland
TYS - PWM
TYSPWM
Knoxville McGhee Tyson
Sat 7/11
10:54 am-4:17 pm
1 stop5h 23m
Portland
Tue 7/21
6:00 am-11:10 am
1 stop5h 10m
$354
KnoxvillePortland
TYS - PWM
TYSPWM
Knoxville McGhee Tyson
Wed 6/24
3:54 pm-11:05 pm
1 stop7h 11m
Portland
Mon 6/29
6:00 am-10:47 am
1 stop4h 47m
$354
KnoxvillePortland
TYS - PWM
TYSPWM
Knoxville McGhee Tyson
Sat 7/11
1:35 pm-11:45 pm
2 stops10h 10m
Portland
Tue 7/21
5:30 am-12:05 pm
2 stops6h 35m
$364
KnoxvillePortland
TYS - PWM
TYSPWM
Knoxville McGhee Tyson
Sat 7/11
1:35 pm-11:45 pm
2 stops10h 10m
Portland
Tue 7/14
5:30 am-12:05 pm
2 stops6h 35m
$364
KnoxvillePortland
TYS - PWM
TYSPWM
Knoxville McGhee Tyson
Wed 7/15
8:10 am-12:25 pm
1 stop4h 15m
Portland
Mon 7/20
5:20 pm-10:35 pm
1 stop5h 15m
$374
Quickest round-trip
KnoxvillePortland
TYS - PWM
TYSPWM
Knoxville McGhee Tyson
Thu 8/13
8:25 am-12:25 pm
1 stop4h 00m
Portland
Thu 8/13
3:40 pm-7:55 pm
1 stop4h 15m
$392
KnoxvillePortland
TYS - PWM
TYSPWM
Knoxville McGhee Tyson
Thu 7/9
10:26 am-5:54 pm
1 stop7h 28m
Portland
Mon 7/13
6:00 am-11:10 am
1 stop5h 10m
$397
Showing 1-10 of 21 resultsSorted by cheapest first
Compare providers for flights from Knoxville to Portland
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Knoxville to Portland in June.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Knoxville-Portland, 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, December is the cheapest month in which you can book a flight from Knoxville to Portland, Maine (average of $328). Flying from Knoxville to Portland, Maine in November is currently the most expensive (average of $651). 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?
Reviews of airlines servicing Portland
Get insights into the airlines that provide service to Portland. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Portland. Reviews last updated June 4, 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.
Crew
8.6
Overall
8.0
Entertainment
7.5
Comfort
8.0
Food
7.0
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Crew
8.6
Overall
8.0
Entertainment
7.5
Comfort
8.0
Food
7.0
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Crew
8.6
Overall
8.0
Entertainment
7.5
Comfort
8.0
Food
7.0
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Crew
8.6
Overall
8.0
Entertainment
7.5
Comfort
8.0
Food
7.0
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
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
Brunswick
Lewiston
Conway
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Alternative routes for Knoxville to Portland
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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 June 4, 2026.
Other flights from Knoxville
Browse through other flights departing from Knoxville. Flights are based on user searches made on Cheapflights and were last updated on June 4, 2026.
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Check out other popular destinations found by fellow travelers in 2026
Other flights to Portland
Explore flights to Portland departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on June 4, 2026.
Top 3 airlines flying from Knoxville to Portland
Discover the top 3 airlines that operate flights from Knoxville to Portland. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 4, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$258 | Average$438 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$265 | Average$418 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$293 | Average$368 | FlexibilityNo cancel fee | On-time63% |