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$259+ Cheap flights from Knoxville to Portland, ME (TYS - PWM)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/21. Fares are subject to change and may not be available on all flights or dates of travel.
TYS — PWM
Jun 28 — Jul 51
Sat 6/28
Sat 7/5
1 adult, Economy
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Cheapflights Tip: The best prices from Knoxville McGhee Tyson to Portland are usually found in January or November, booked 71 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 June 23, 2025.

Round-trip from

$259
(American Airlines)

Popular in

December

Cheapest in

January

Average price

$383
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. 1% potential price decrease ($6 potential savings vs. average RT price).
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Average for round-trip flights in June 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 June 23, 2025.

This American Airlines deal was found by Cheapflights users on 6/21. 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 7/215:19 pmTYS - PWM
1 stop6h 40mAmerican Airlines
Mon 7/285:55 amPWM - TYS
1 stop4h 46mAmerican Airlines
Deal found 6/21$259
This Delta deal was found by Cheapflights users on 6/22. 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 7/222:36 pmTYS - PWM
2 stops10h 21mDelta
Tue 7/296:05 amPWM - TYS
1 stop4h 41mDelta
Deal found 6/22$264
This United Airlines deal was found by Cheapflights users on 6/21. 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 6/255:45 amTYS - PWM
2 stops7h 34mUnited Airlines
Tue 7/13:50 pmPWM - TYS
2 stops8h 09mUnited Airlines
Deal found 6/21$389
This Mytrip deal was found by Cheapflights users on 6/21. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/146:00 amTYS - PWM
1 stop11h 25mMultiple Airlines
Fri 7/1812:40 pmPWM - TYS
3 stops26h 22mMultiple Airlines
Deal found 6/21$512

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 23, 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

Mon 7/21

5:19 pm-11:59 pm

1 stop6h 40m

Portland

Mon 7/28

5:55 am-10:41 am

1 stop4h 46m

$259

KnoxvillePortland

TYS - PWM

TYSPWM

Knoxville McGhee Tyson

Tue 7/22

2:36 pm-12:57 am

2 stops10h 21m

Portland

Tue 7/29

6:05 am-10:46 am

1 stop4h 41m

$264

KnoxvillePortland

TYS - PWM

TYSPWM

Knoxville McGhee Tyson

Fri 9/5

5:45 am-1:22 pm

2 stops7h 37m

Portland

Mon 9/8

2:14 pm-10:35 pm

2 stops8h 21m

$487

KnoxvillePortland

TYS - PWM

TYSPWM

Knoxville McGhee Tyson

Mon 7/14

6:00 am-5:25 pm

1 stop11h 25m

Portland

Fri 7/18

12:40 pm-3:02 pm

3 stops26h 22m

$512

KnoxvillePortland

TYS - PWM

TYSPWM

Knoxville McGhee Tyson

Sun 7/6

7:30 am-12:04 pm

1 stop4h 34m

$304

KnoxvillePortland

TYS - PWM

TYSPWM

Knoxville McGhee Tyson

Sun 7/6

6:00 am-11:17 am

3 stops29h 17m

$458

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/22

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 June 20, 2025.

Booking 70 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 June 23, 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.

Rainfall in Portland by month

Plan your trip to Portland by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Portland, Maine ranges from 2.9 - 4.5 inches per month. November is typically the wettest month, when rainfall can reach 4.5 in. August is typically the driest time to visit Portland, Maine when rainfall is around 2.9 in.

Temperature in Portland by month

Plan your trip to Portland by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Portland, Maine, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 68.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

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 23, 2025.
Get a feel of what it's like to fly with Delta, United Airlines and American Airlines from Knoxville to Portland by reading reviews from past customers. 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
7,965 reviews

Comfort

7.9

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

Crew

8.5

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
7,965 reviews
Delta
8.0
Very good
7,965 reviews

Comfort

7.9

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

Crew

8.5

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
8,831 reviews
Delta
8.0
Very good
7,965 reviews

Comfort

7.9

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

Crew

8.5

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
7,965 reviews

Comfort

7.9

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

Crew

8.5

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.

  • 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 $259. Other airlines that can offer you cheap pricing are Delta, from $264, and United Airlines, from $487. American Airlines is 23% 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 Knoxville?

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

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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 June 23, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$246Average$306FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$258Average$412FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$258Average$357FlexibilityNo cancel feeOn-time71%

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