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$153+ 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 2/16. Fares are subject to change and may not be available on all flights or dates of travel.
TYS — PWM
feb. 8 — feb. 151
dom. 2/8
dom. 2/15
1 adult, Economy
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Cheap 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 enero 9, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$250
(Southwest)

One-way from

$200
(Southwest)

Popular in

November

Cheapest in

September

Average price

$331
Provider with most accurate pricing for Knoxville McGhee Tyson-Portland flight deals.
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Provider most trusted by Cheapflights users for Knoxville McGhee Tyson-Portland flights.
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From Knoxville McGhee Tyson to Portland
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One-way flight from Knoxville McGhee Tyson to Portland
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Highest demand for flights based on searches. 16% potential increase in price ($76 potential increase over avg. RT price).
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Cheapest flight prices on average. 6% potential price decrease ($25 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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Find flight deals from Knoxville to Portland

Cheapest flights from Knoxville to Portland
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 enero 9, 2026.

This United Airlines deal was found by Cheapflights users on 1/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 2/49:30 amTYS - PWM
1 stop5h 01mUnited Airlines
mié. 2/1111:12 amPWM - TYS
2 stops9h 40mUnited Airlines
Deal found 1/8$240
This Southwest deal was found by Cheapflights users on 1/7. 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.
sáb. 3/147:50 amTYS - PWM
1 stop8h 55mSouthwest
mar. 3/174:30 pmPWM - TYS
1 stop4h 40mSouthwest
Deal found 1/7$250
This Southwest deal was found by Cheapflights users on 1/7. 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.
mié. 3/257:50 amTYS - PWM
1 stop4h 05mSouthwest
sáb. 3/285:20 pmPWM - TYS
1 stop4h 50mSouthwest
Deal found 1/7$269
This American Airlines deal was found by Cheapflights users on 1/8. 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.
mié. 2/47:44 amTYS - PWM
1 stop4h 21mAmerican Airlines
mié. 2/115:20 amPWM - TYS
1 stop5h 29mAmerican Airlines
Deal found 1/8$273
This Delta deal was found by Cheapflights users on 1/8. 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.
sáb. 8/85:30 amTYS - PWM
1 stop6h 52mDelta
vie. 8/146:50 pmPWM - TYS
1 stop4h 57mDelta
Deal found 1/8$304
This Kiwi.com deal was found by Cheapflights users on 1/7. 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.
jue. 1/229:29 amTYS - PWM
2 stops30h 57mMultiple Airlines
lun. 1/269:47 amPWM - TYS
1 stop7h 41mMultiple Airlines
Deal found 1/7$317
This Southwest deal was found by Cheapflights users on 1/8. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 8/77:10 amTYS - PWM
1 stop6h 15mSouthwest
sáb. 8/155:40 amPWM - TYS
2 stops12h 00mSouthwest
Deal found 1/8$320
This American Airlines deal was found by Cheapflights users on 1/8. 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.
jue. 1/224:00 pmTYS - PWM
1 stop6h 07mAmerican Airlines
lun. 1/265:20 amPWM - TYS
1 stop5h 29mAmerican Airlines
Deal found 1/8$329

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 enero 9, 2026.
Use the filters below to find and compare flights from Knoxville to Portland that are best for you.

Fly from

Knoxville

Fly to

Portland

Route

Depart

Return

Price

KnoxvillePortland

TYS - PWM

TYSPWM

Knoxville McGhee Tyson

mié. 2/4

9:30 am-2:31 pm

1 stop5h 01m

Portland

mié. 2/11

11:12 am-8:52 pm

2 stops9h 40m

$240

KnoxvillePortland

TYS - PWM

TYSPWM

Knoxville McGhee Tyson

sáb. 3/14

7:50 am-4:45 pm

1 stop8h 55m

Portland

mar. 3/17

4:30 pm-9:10 pm

1 stop4h 40m

$250

KnoxvillePortland

TYS - PWM

TYSPWM

Knoxville McGhee Tyson

mié. 3/25

7:50 am-11:55 am

1 stop4h 05m

Portland

sáb. 3/28

5:20 pm-10:10 pm

1 stop4h 50m

$269

KnoxvillePortland

TYS - PWM

TYSPWM

Knoxville McGhee Tyson

mié. 2/4

7:44 am-12:05 pm

1 stop4h 21m

Portland

mié. 2/11

5:20 am-10:49 am

1 stop5h 29m

$273

KnoxvillePortland

TYS - PWM

TYSPWM

Knoxville McGhee Tyson

jue. 1/22

9:29 am-4:26 pm

2 stops30h 57m

Portland

lun. 1/26

9:47 am-5:28 pm

1 stop7h 41m

$317

KnoxvillePortland

TYS - PWM

TYSPWM

Knoxville McGhee Tyson

jue. 1/22

5:14 pm-10:07 pm

1 stop4h 53m

Portland

lun. 1/26

5:20 am-10:49 am

1 stop5h 29m

$329

KnoxvillePortland

TYS - PWM

TYSPWM

Knoxville McGhee Tyson

vie. 6/26

12:35 pm-12:05 am

2 stops11h 30m

Portland

mié. 7/1

3:45 pm-9:15 pm

1 stop5h 30m

$343

KnoxvillePortland

TYS - PWM

TYSPWM

Knoxville McGhee Tyson

lun. 2/16

6:05 am-10:25 am

1 stop4h 20m

$153

KnoxvillePortland

TYS - PWM

TYSPWM

Knoxville McGhee Tyson

dom. 5/24

8:30 am-3:40 pm

1 stop7h 10m

$200

KnoxvillePortland

TYS - PWM

TYSPWM

Knoxville McGhee Tyson

dom. 5/24

5:30 am-12:18 pm

1 stop6h 48m

$220

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/8

Showing 1-10 of 13 results
1
2

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 January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Knoxville-Portland, Maine flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Knoxville-Portland, Maine flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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.
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, July is the cheapest month in which you can book a flight from Knoxville to Portland, Maine (average of $63). Flying from Knoxville to Portland, Maine in January is currently the most expensive (average of $186). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing Portland

Get insights into the airlines that provide service to Portland. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Portland. Reviews last updated enero 9, 2026.
Read reviews from past customers who have flown Delta, United Airlines, and American 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.
Delta
7.9
Good
8,031 reviews

Overall

7.9

Comfort

7.9

Food

7.2

Boarding

8.1

Crew

8.5

Entertainment

7.8

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,031 reviews
Delta
7.9
Good
8,031 reviews

Overall

7.9

Comfort

7.9

Food

7.2

Boarding

8.1

Crew

8.5

Entertainment

7.8

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,142 reviews
Delta
7.9
Good
8,031 reviews

Overall

7.9

Comfort

7.9

Food

7.2

Boarding

8.1

Crew

8.5

Entertainment

7.8

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
American Airlines
7.2
Good
11,097 reviews
Delta
7.9
Good
8,031 reviews

Overall

7.9

Comfort

7.9

Food

7.2

Boarding

8.1

Crew

8.5

Entertainment

7.8

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

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.

  • How long is the flight from Knoxville to Portland, Maine?

    There are many flights that can get you from Knoxville to Portland, Maine in 4h 21m. Fly via United Airlines, Southwest, or American Airlines to get the fastest option. The distance from Knoxville to Portland, Maine is about 904 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines flying from Knoxville to Portland, Maine round-trip?

    Cheapflights users have booked flights from Knoxville to Portland, Maine round-trip from $246. Other airlines that can offer you cheap pricing are American Airlines, from $258, and United Airlines, from $340. Delta is 36% cheaper than the average price of flights available within the next 90 days to this destination.

  • Can I find deals for flights from Knoxville to Portland that include hotel bookings?

    Yes. In addition to deals on Knoxville to Portland flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Knoxville to Portland?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Knoxville to Portland.

  • Can I find deals for business class flights from Knoxville to Portland?

    Yes. Cheapflights offers flight deals from Knoxville to Portland by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Knoxville to Portland, Maine?

    Currently, July is the cheapest month in which you can book a flight from Knoxville to Portland, Maine (average of $63). Flying from Knoxville to Portland, Maine in January is currently the most expensive (average of $186). 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.

See more FAQs

Traveling to a place near Portland?

Book flights to Portland if you plan to visit one of these locations
North Conway
Brunswick
Auburn
Conway

Browse thousands of different options on Cheapflights for your next trip

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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 enero 9, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$246Average$388FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$258Average$364FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$340Average$442FlexibilityNo cancel feeOn-time69%

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