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$170+ 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 9/23. Fares are subject to change and may not be available on all flights or dates of travel.
TYS — PWM
Jul 8 — Jul 151
Tue 7/8
Tue 7/15
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 July 3, 2025.

Round-trip from

$259
(Delta)

One-way from

$170
(American Airlines)

Popular in

March

Cheapest in

January

Average price

$358
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. 4% potential increase in price ($15 potential increase over avg. RT price).
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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 July 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 July 3, 2025.

This Delta deal was found by Cheapflights users on 7/2. 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 8/286:20 pmTYS - PWM
1 stop5h 43mDelta
Thu 9/41:39 pmPWM - TYS
1 stop6h 57mDelta
Deal found 7/2$259
This American Airlines deal was found by Cheapflights users on 7/1. 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.
Sat 7/125:58 pmTYS - PWM
1 stop4h 47mAmerican Airlines
Thu 7/177:00 amPWM - TYS
1 stop4h 23mAmerican Airlines
Deal found 7/1$329
This United Airlines deal was found by Cheapflights users on 7/2. 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.
Wed 7/235:45 amTYS - PWM
1 stop18h 14mUnited Airlines
Wed 7/305:35 amPWM - TYS
1 stop4h 52mUnited Airlines
Deal found 7/2$408
This Mytrip deal was found by Cheapflights users on 7/2. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/148:52 pmTYS - PWM
2 stops20h 33mMultiple Airlines
Sun 8/178:52 pmPWM - TYS
2 stops17h 52mMultiple Airlines
Deal found 7/2$527

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 July 3, 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

Thu 8/28

6:20 pm-12:03 am

1 stop5h 43m

Portland

Thu 9/4

1:39 pm-8:36 pm

1 stop6h 57m

$259

KnoxvillePortland

TYS - PWM

TYSPWM

Knoxville McGhee Tyson

Mon 8/25

10:36 am-4:46 pm

1 stop6h 10m

Portland

Mon 9/1

7:03 am-11:29 am

1 stop4h 26m

$329

KnoxvillePortland

TYS - PWM

TYSPWM

Knoxville McGhee Tyson

Wed 7/23

5:45 am-11:59 pm

1 stop18h 14m

Portland

Wed 7/30

5:35 am-10:27 am

1 stop4h 52m

$408

KnoxvillePortland

TYS - PWM

TYSPWM

Knoxville McGhee Tyson

Thu 8/14

8:52 pm-5:25 pm

2 stops20h 33m

Portland

Sun 8/17

8:52 pm-2:44 pm

2 stops17h 52m

$527

KnoxvillePortland

TYS - PWM

TYSPWM

Knoxville McGhee Tyson

Tue 9/23

10:57 am-5:39 pm

1 stop6h 42m

$170

KnoxvillePortland

TYS - PWM

TYSPWM

Knoxville McGhee Tyson

Mon 8/4

6:00 am-5:25 pm

1 stop11h 25m

$208

KnoxvillePortland

TYS - PWM

TYSPWM

Knoxville McGhee Tyson

Tue 9/23

7:00 am-7:29 pm

3 stops12h 29m

$215

KnoxvillePortland

TYS - PWM

TYSPWM

Knoxville McGhee Tyson

Mon 8/4

5:57 pm-12:38 am

1 stop6h 41m

$250

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/2

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 27, 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 July 3, 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 July 3, 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
7,982 reviews

Overall

8.0

Crew

8.5

Entertainment

7.9

Boarding

8.2

Food

7.3

Comfort

7.9

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
7,982 reviews
Delta
8.0
Very good
7,982 reviews

Overall

8.0

Crew

8.5

Entertainment

7.9

Boarding

8.2

Food

7.3

Comfort

7.9

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
8,861 reviews
Delta
8.0
Very good
7,982 reviews

Overall

8.0

Crew

8.5

Entertainment

7.9

Boarding

8.2

Food

7.3

Comfort

7.9

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
7,982 reviews

Overall

8.0

Crew

8.5

Entertainment

7.9

Boarding

8.2

Food

7.3

Comfort

7.9

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 American Airlines, from $329, and United Airlines, from $408. Delta is 25% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from Knoxville to Portland, Maine one-way?

    For one-way options, check prices for American Airlines. According to our data, you can fly for as low as $170. Users have also found prices from $215 and $250 on United Airlines and Delta, respectively.

  • 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
Brunswick
North Conway
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 July 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$246Average$308FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$258Average$412FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$258Average$355FlexibilityNo cancel feeOn-time71%

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