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$145+ 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 11/10. Fares are subject to change and may not be available on all flights or dates of travel.
TYS — PWM
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
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 72 days in advance, depart on a Wednesday or Thursday and return on a Saturday

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 September 15, 2025.

Round-trip from

$279
(American Airlines)

One-way from

$145
(Delta)

Popular in

December

Cheapest in

January

Average price

$298
From Knoxville McGhee Tyson to Portland
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One-way flight from Knoxville McGhee Tyson to Portland
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High demand for flights, 6% potential price rise
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Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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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 September 15, 2025.

This American Airlines deal was found by Cheapflights users on 9/14. 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 10/206:14 pmTYS - PWM
1 stop4h 34mAmerican Airlines
Sat 10/257:44 amPWM - TYS
1 stop6h 04mAmerican Airlines
Deal found 9/14$294
This Delta deal was found by Cheapflights users on 9/13. 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 9/285:45 amTYS - PWM
1 stop6h 44mDelta
Wed 10/11:40 pmPWM - TYS
1 stop6h 59mDelta
Deal found 9/13$309
This American Airlines deal was found by Cheapflights users on 9/13. 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 9/277:14 amTYS - PWM
2 stops9h 25mAmerican Airlines
Wed 10/11:02 pmPWM - TYS
2 stops5h 48mAmerican Airlines
Deal found 9/13$319
This American Airlines deal was found by Cheapflights users on 9/12. 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 10/203:03 pmTYS - PWM
1 stop7h 42mAmerican Airlines
Thu 10/235:59 pmPWM - TYS
1 stop5h 51mAmerican Airlines
Deal found 9/12$324
This American Airlines deal was found by Cheapflights users on 9/15. 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 10/182:52 pmTYS - PWM
2 stops6h 29mAmerican Airlines
Sun 10/266:00 amPWM - TYS
1 stop4h 50mAmerican Airlines
Deal found 9/15$344
This Delta deal was found by Cheapflights users on 9/14. 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 9/295:45 amTYS - PWM
2 stops8h 16mDelta
Fri 10/36:00 amPWM - TYS
1 stop5h 11mDelta
Deal found 9/14$359

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 September 15, 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

Sun 9/28

5:45 am-12:29 pm

1 stop6h 44m

Portland

Wed 10/1

1:40 pm-8:39 pm

1 stop6h 59m

$309

KnoxvillePortland

TYS - PWM

TYSPWM

Knoxville McGhee Tyson

Sat 10/18

6:03 am-11:54 am

1 stop5h 51m

Portland

Sun 10/26

6:00 am-10:50 am

1 stop4h 50m

$309

KnoxvillePortland

TYS - PWM

TYSPWM

Knoxville McGhee Tyson

Sun 9/28

6:30 am-1:53 pm

1 stop7h 23m

Portland

Thu 10/2

1:09 pm-7:46 pm

2 stops6h 37m

$314

KnoxvillePortland

TYS - PWM

TYSPWM

Knoxville McGhee Tyson

Mon 10/20

3:03 pm-10:45 pm

1 stop7h 42m

Portland

Thu 10/23

5:59 pm-11:50 pm

1 stop5h 51m

$324

KnoxvillePortland

TYS - PWM

TYSPWM

Knoxville McGhee Tyson

Fri 9/19

7:11 pm-12:11 am

1 stop5h 00m

Portland

Mon 9/22

6:00 am-10:56 am

1 stop4h 56m

$409

KnoxvillePortland

TYS - PWM

TYSPWM

Knoxville McGhee Tyson

Fri 9/19

7:11 pm-12:11 am

1 stop5h 00m

Portland

Sun 9/21

6:00 am-11:11 am

1 stop5h 11m

$409

KnoxvillePortland

TYS - PWM

TYSPWM

Knoxville McGhee Tyson

Fri 9/19

6:10 pm-11:05 pm

1 stop4h 55m

Portland

Mon 9/22

1:02 pm-7:05 pm

2 stops6h 03m

$414

KnoxvillePortland

TYS - PWM

TYSPWM

Knoxville McGhee Tyson

Wed 10/1

2:00 pm-9:44 pm

1 stop7h 44m

Portland

Tue 10/7

5:41 pm-10:29 am

2 stops16h 48m

$491

KnoxvillePortland

TYS - PWM

TYSPWM

Knoxville McGhee Tyson

Mon 11/10

3:51 pm-11:54 pm

2 stops8h 03m

$145

KnoxvillePortland

TYS - PWM

TYSPWM

Knoxville McGhee Tyson

Sun 11/9

6:06 am-11:46 am

1 stop5h 40m

$155

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/13

Showing 1-10 of 15 results
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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 September 12, 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, January is the cheapest month in which you can book a flight from Knoxville to Portland, Maine (average of $296). Flying from Knoxville to Portland, Maine in July is currently the most expensive (average of $394). 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 September 15, 2025.

It’s typically best to fly out from Knoxville to Portland, Maine at noon. Doing so could potentially save you 29% on the flight price compared to flying in the afternoon, 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 September 15, 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
8.0
Very good
7,954 reviews

Crew

8.5

Boarding

8.2

Entertainment

7.9

Food

7.3

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,954 reviews
Delta
8.0
Very good
7,954 reviews

Crew

8.5

Boarding

8.2

Entertainment

7.9

Food

7.3

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,929 reviews
Delta
8.0
Very good
7,954 reviews

Crew

8.5

Boarding

8.2

Entertainment

7.9

Food

7.3

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,954 reviews

Crew

8.5

Boarding

8.2

Entertainment

7.9

Food

7.3

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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 51m. Fly via Delta 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 United Airlines, from $258, and American Airlines, from $258. Delta is 32% 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, January is the cheapest month in which you can book a flight from Knoxville to Portland, Maine (average of $296). Flying from Knoxville to Portland, Maine in July is currently the most expensive (average of $394). 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
Brunswick
North Conway
Auburn
Conway
Lewiston

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 September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$246Average$333FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$258Average$458FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$258Average$359FlexibilityNo cancel feeOn-time71%

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