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$125+ 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 2/14. Fares are subject to change and may not be available on all flights or dates of travel.
TYS — PWM
ene. 7 — ene. 141
mié. 1/7
mié. 1/14
1 adult, Economy
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Cheapflights Tip: The best prices from Knoxville McGhee Tyson to Portland are usually found in January or September, booked 74 days in advance, depart on a Wednesday or Thursday and return on a Saturday

Cheap 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 diciembre 8, 2025.

This United Airlines deal was found by Cheapflights users on 12/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/259:50 amTYS - PWM
1 stop4h 50mUnited Airlines
jue. 1/17:30 pmPWM - TYS
1 stop4h 29mUnited Airlines
Deal found 12/7$323
This American Airlines deal was found by Cheapflights users on 12/6. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/106:00 amTYS - PWM
1 stop5h 37mAmerican Airlines
vie. 12/125:34 amPWM - TYS
1 stop5h 16mAmerican Airlines
Deal found 12/6$439
This United Airlines deal was found by Cheapflights users on 12/6. 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.
mié. 12/319:50 amTYS - PWM
1 stop4h 50mUnited Airlines
sáb. 1/35:30 amPWM - TYS
1 stop5h 26mUnited Airlines
Deal found 12/6$476
This Kiwi.com deal was found by Cheapflights users on 12/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/318:35 amTYS - PWM
1 stop25h 34mMultiple Airlines
sáb. 1/311:16 amPWM - TYS
2 stops21h 02mMultiple Airlines
Deal found 12/6$480
This American Airlines deal was found by Cheapflights users on 12/7. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/257:15 amTYS - PWM
2 stops9h 28mAmerican Airlines
jue. 1/16:00 amPWM - TYS
2 stops8h 21mAmerican Airlines
Deal found 12/7$569
This American Airlines deal was found by Cheapflights users on 12/6. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/315:00 amTYS - PWM
2 stops6h 49mAmerican Airlines
sáb. 1/35:45 amPWM - TYS
2 stops7h 07mAmerican Airlines
Deal found 12/6$721
This United Airlines deal was found by Cheapflights users on 12/6. 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.
mié. 12/101:52 pmTYS - PWM
2 stops9h 17mUnited Airlines
vie. 12/126:00 amPWM - TYS
2 stops11h 11mUnited Airlines
Deal found 12/6$775

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 diciembre 8, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$290
(Southwest)

One-way from

$125
(American Airlines)

Popular in

November

Cheapest in

January

Average price

$368
Provider with most accurate pricing for Knoxville McGhee Tyson-Portland flight deals.
Search Deals
Provider most trusted by Cheapflights users for Knoxville McGhee Tyson-Portland flights.
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From Knoxville McGhee Tyson to Portland
Search Deals
One-way flight from Knoxville McGhee Tyson to Portland
Search Deals
Highest demand for flights based on searches. 19% potential increase in price ($94 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease ($25 potential savings vs. average RT price).
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Average for round-trip flights in December 2025
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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 diciembre 8, 2025.
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

sáb. 2/14

6:00 am-11:47 am

1 stop5h 47m

Portland

lun. 2/23

5:31 am-10:46 am

1 stop5h 15m

$264

KnoxvillePortland

TYS - PWM

TYSPWM

Knoxville McGhee Tyson

dom. 2/15

6:00 am-11:47 am

1 stop5h 47m

Portland

lun. 2/23

5:31 am-10:46 am

1 stop5h 15m

$279

KnoxvillePortland

TYS - PWM

TYSPWM

Knoxville McGhee Tyson

sáb. 1/24

9:30 am-2:29 pm

1 stop4h 59m

Portland

mié. 1/28

2:31 pm-7:27 pm

1 stop4h 56m

$319

KnoxvillePortland

TYS - PWM

TYSPWM

Knoxville McGhee Tyson

jue. 12/25

9:50 am-2:40 pm

1 stop4h 50m

Portland

jue. 1/1

7:30 pm-11:59 pm

1 stop4h 29m

$323

KnoxvillePortland

TYS - PWM

TYSPWM

Knoxville McGhee Tyson

sáb. 2/14

11:33 am-4:43 pm

1 stop5h 10m

$125

KnoxvillePortland

TYS - PWM

TYSPWM

Knoxville McGhee Tyson

vie. 12/19

10:49 am-6:16 pm

1 stop7h 27m

$220

KnoxvillePortland

TYS - PWM

TYSPWM

Knoxville McGhee Tyson

sáb. 2/14

1:54 pm-10:49 am

3 stops44h 55m

$294

KnoxvillePortland

TYS - PWM

TYSPWM

Knoxville McGhee Tyson

vie. 12/19

8:53 am-10:36 am

2 stops25h 43m

$294

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/7

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 December.
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

How far ahead should I book a flight from Knoxville to Portland, Maine?

Use this chart to determine the optimal time to book a round-trip flight from Knoxville to Portland. Price data was last updated on December 5, 2025.

Booking 24 days in advance of your planned departure date is, on average, the best time to get cheap flights from Knoxville to Portland, Maine. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Knoxville to Portland, 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.

What is the cheapest time of day to fly from TYS to PWM?

Find hourly flight availability from Knoxville to Portland. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated diciembre 8, 2025.

It’s typically best to fly out from Knoxville to Portland, Maine at noon. Doing so could potentially save you 56% on the flight price compared to flying in the evening, which is usually more expensive.

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 diciembre 8, 2025.
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
8,013 reviews

Overall

7.9

Entertainment

7.9

Crew

8.5

Boarding

8.1

Comfort

7.9

Food

7.3

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
8,013 reviews
Delta
7.9
Good
8,013 reviews

Overall

7.9

Entertainment

7.9

Crew

8.5

Boarding

8.1

Comfort

7.9

Food

7.3

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
9,076 reviews
Delta
7.9
Good
8,013 reviews

Overall

7.9

Entertainment

7.9

Crew

8.5

Boarding

8.1

Comfort

7.9

Food

7.3

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
11,042 reviews
Delta
7.9
Good
8,013 reviews

Overall

7.9

Entertainment

7.9

Crew

8.5

Boarding

8.1

Comfort

7.9

Food

7.3

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 5h 47m. Fly via American Airlines to get the fastest option. The distance from Knoxville to Portland, Maine is about 904 mi.

  • 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 $258. Delta is 35% 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

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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 diciembre 8, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$246Average$388FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$258Average$442FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$258Average$361FlexibilityNo cancel feeOn-time71%

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