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Cheap flights from Knoxville to Portland from $156

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Knoxville to Portland departing on 5/27. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Knoxville to Portland

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
7:00 am - 2:20 pm
TYS
-
PWM
7h 20m
1 stop
United Airlines Logo
4:28 pm - 10:34 pm
PWM
-
TYS
6h 06m
1 stop
$311United Airlines
Tue, Apr 14 - Tue, Apr 21
United Airlines Logo
7:00 am - 6:37 pm
TYS
-
PWM
11h 37m
2 stops
United Airlines Logo
4:28 pm - 10:34 pm
PWM
-
TYS
6h 06m
1 stop
$316United Airlines
Tue, Apr 14 - Tue, Apr 21
American Airlines Logo
6:38 pm - 11:27 pm
TYS
-
PWM
4h 49m
1 stop
American Airlines Logo
10:47 am - 3:38 pm
PWM
-
TYS
4h 51m
1 stop
$325American Airlines
Mon, Apr 13 - Tue, Apr 14
American Airlines Logo
6:38 pm - 11:27 pm
TYS
-
PWM
4h 49m
1 stop
American Airlines Logo
3:39 pm - 10:56 pm
PWM
-
TYS
7h 17m
2 stops
$330American Airlines
Mon, Apr 13 - Tue, Apr 14
Southwest Logo
12:50 pm - 10:35 pm
TYS
-
PWM
9h 45m
2 stops
Southwest Logo
5:35 am - 2:05 pm
PWM
-
TYS
8h 30m
2 stops
$335Southwest
Wed, Jun 3 - Sat, Jun 6
Delta Logo
6:07 pm - 11:18 pm
TYS
-
PWM
5h 11m
1 stop
Delta Logo
1:18 pm - 8:50 pm
PWM
-
TYS
7h 32m
1 stop
$339Delta
Thu, May 14 - Sun, May 24
Southwest Logo
12:35 pm - 12:05 am
TYS
-
PWM
11h 30m
2 stops
Southwest Logo
5:20 pm - 10:30 pm
PWM
-
TYS
5h 10m
1 stop
$344Southwest
Thu, Jun 11 - Mon, Jun 15
Southwest Logo
8:15 am - 3:20 pm
TYS
-
PWM
7h 05m
1 stop
Southwest Logo
6:10 am - 5:10 pm
PWM
-
TYS
11h 00m
2 stops
$349Southwest
Wed, Apr 15 - Wed, Apr 22
Southwest Logo
12:50 pm - 10:35 pm
TYS
-
PWM
9h 45m
2 stops
Southwest Logo
6:10 am - 5:10 pm
PWM
-
TYS
11h 00m
2 stops
$354Southwest
Tue, Apr 14 - Tue, Apr 21
Multiple Airlines Logo
7:24 pm - 4:16 pm
TYS
-
PWM
20h 52m
2 stops
Multiple Airlines Logo
9:52 am - 11:39 pm
PWM
-
TYS
13h 47m
1 stop
$357Multiple Airlines
Fri, May 29 - Fri, Jun 5

United Airlines flights from Knoxville to Portland, Maine

Our best United Airlines deals on Knoxville to Portland, Maine flight tickets
United Airlines
Apr 14
TYS7:00 amKnoxville McGhee Tyson
7h 20m
1 stop
PWM2:20 pmPortland
Apr 21
PWM4:28 pmPortland
6h 06m
1 stop
TYS10:34 pmKnoxville McGhee Tyson
$311
United Airlines
Apr 14
TYS7:00 amKnoxville McGhee Tyson
11h 37m
2 stops
PWM6:37 pmPortland
Apr 21
PWM4:28 pmPortland
6h 06m
1 stop
TYS10:34 pmKnoxville McGhee Tyson
$316
United Airlines
May 30
TYS7:19 pmKnoxville McGhee Tyson
4h 32m
1 stop
PWM11:51 pmPortland
Jun 7
PWM5:15 amPortland
5h 27m
1 stop
TYS10:42 amKnoxville McGhee Tyson
$358

American Airlines flights from Knoxville to Portland, Maine

Our best American Airlines deals on Knoxville to Portland, Maine flight tickets
American Airlines
Apr 13
TYS6:38 pmKnoxville McGhee Tyson
4h 49m
1 stop
PWM11:27 pmPortland
Apr 14
PWM10:47 amPortland
4h 51m
1 stop
TYS3:38 pmKnoxville McGhee Tyson
$325
American Airlines
Apr 13
TYS6:38 pmKnoxville McGhee Tyson
4h 49m
1 stop
PWM11:27 pmPortland
Apr 14
PWM3:39 pmPortland
7h 17m
2 stops
TYS10:56 pmKnoxville McGhee Tyson
$330
American Airlines
Apr 4
TYS6:05 amKnoxville McGhee Tyson
4h 18m
1 stop
PWM10:23 amPortland
Apr 8
PWM5:02 pmPortland
6h 57m
2 stops
TYS11:59 pmKnoxville McGhee Tyson
$394

momondo Fare Finder

 
Customize your flight search to find flights from Knoxville to Portland, Maine 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, momondo users made 832,500 searches. Data last updated March 22, 2026.
Use the filters below to find and compare flights from Knoxville to Portland, Maine that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

KnoxvillePortland

TYS - PWM

TYSPWM

Knoxville McGhee Tyson

Tue 4/14

7:00 am-2:20 pm

1 stop7h 20m

Portland

Tue 4/21

4:28 pm-10:34 pm

1 stop6h 06m

$311

KnoxvillePortland

TYS - PWM

TYSPWM

Knoxville McGhee Tyson

Tue 4/14

7:00 am-6:37 pm

2 stops11h 37m

Portland

Tue 4/21

4:28 pm-10:34 pm

1 stop6h 06m

$316
Quickest round-trip

KnoxvillePortland

TYS - PWM

TYSPWM

Knoxville McGhee Tyson

Mon 4/13

6:38 pm-11:27 pm

1 stop4h 49m

Portland

Tue 4/14

10:47 am-3:38 pm

1 stop4h 51m

$325

KnoxvillePortland

TYS - PWM

TYSPWM

Knoxville McGhee Tyson

Mon 4/13

6:38 pm-11:27 pm

1 stop4h 49m

Portland

Tue 4/14

3:39 pm-10:56 pm

2 stops7h 17m

$330

KnoxvillePortland

TYS - PWM

TYSPWM

Knoxville McGhee Tyson

Wed 6/3

12:50 pm-10:35 pm

2 stops9h 45m

Portland

Sat 6/6

5:35 am-2:05 pm

2 stops8h 30m

$335

KnoxvillePortland

TYS - PWM

TYSPWM

Knoxville McGhee Tyson

Thu 5/14

6:07 pm-11:18 pm

1 stop5h 11m

Portland

Sun 5/24

1:18 pm-8:50 pm

1 stop7h 32m

$339

KnoxvillePortland

TYS - PWM

TYSPWM

Knoxville McGhee Tyson

Thu 6/11

12:35 pm-12:05 am

2 stops11h 30m

Portland

Mon 6/15

5:20 pm-10:30 pm

1 stop5h 10m

$344

KnoxvillePortland

TYS - PWM

TYSPWM

Knoxville McGhee Tyson

Wed 4/15

8:15 am-3:20 pm

1 stop7h 05m

Portland

Wed 4/22

6:10 am-5:10 pm

2 stops11h 00m

$349

KnoxvillePortland

TYS - PWM

TYSPWM

Knoxville McGhee Tyson

Tue 4/14

12:50 pm-10:35 pm

2 stops9h 45m

Portland

Tue 4/21

6:10 am-5:10 pm

2 stops11h 00m

$354

KnoxvillePortland

TYS - PWM

TYSPWM

Knoxville McGhee Tyson

Fri 5/29

7:24 pm-4:16 pm

2 stops20h 52m

Portland

Fri 6/5

9:52 am-11:39 pm

1 stop13h 47m

$357

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Portland from

How to get the cheapest flight ticket from Knoxville to Portland, Maine

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Portland, Maine?

The cheapest month to fly to Portland, Maine from Knoxville is in September. Flight prices, which tend to average around $298, are often lower during this time because this is during the off-season. If you aren’t able to travel to Portland, Maine during the month of September, then flying in August is also cheap. Prices for this month can be found on momondo for an average of $328.

When to book flights from Knoxville to Portland, Maine

Are you open to changing your travel dates? Check out the ideal times to fly from Knoxville to Portland, Maine according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Knoxville to Portland, Maine (TYS to PWM) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Knoxville to Portland, Maine

Fastest flight time

4h 41m

Direct flights

None
The fastest flight from Knoxville to Portland, Maine takes 4h 41m
There are no direct flights from Knoxville to Portland, Maine. There are no popular flight routes from Knoxville to Portland, Maine.
Search flight deals

  • How far is Knoxville McGhee Tyson to Portland by plane?

    A flight from Knoxville McGhee Tyson to Portland will travel around 897.0 mi. Flights usually cover this in 4h 41m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Knoxville McGhee Tyson Airport to Portland Airport?

    Prices for flights from Knoxville McGhee Tyson Airport to Portland Airport were last updated today.

  • How many operators does momondo search for flights from Knoxville McGhee Tyson Airport to Portland Airport?

  • How old do you have to be to fly from Knoxville McGhee Tyson Airport to Portland Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Knoxville McGhee Tyson Airport to Portland Airport.

  • What documentation or ID do you need to fly to Portland Airport?

    The travel and health documents required for your trip to Portland Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Portland Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular airline from Knoxville to Portland, Maine?

Best airlines flying from Knoxville to Portland, Maine

Compare and see reviews for airlines that fly from Knoxville to Portland, Maine with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $258Free CancellationRating
7.4
9,455 reviews
Search United Airlines flights
American AirlinesPriceFrom $258Free CancellationRating
7.1
11,489 reviews
Search American Airlines flights
DeltaPriceFrom $258Free CancellationRating
7.9
8,314 reviews
Search Delta flights
SouthwestPriceFrom $278Free CancellationRating
8.0
4,324 reviews
Search Southwest flights

Traveling to a place near Portland?

Book flights to Portland if you plan to visit one of these locations
North Conway
Boothbay Harbor
Jackson
Conway
Freeport
Lewiston
Brunswick
Bartlett
Gorham
Auburn
Windham
Intervale
Oxford
Bath
Georgetown
Falmouth
Tamworth

Why use momondo?

Why should I use momondo to find a flight deal from Knoxville to Portland?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Portland from Knoxville.

Can I find flights from Knoxville to Portland with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Portland from Knoxville with this policy.

How can momondo help me find flights from Knoxville to Portland?

Once all potential Knoxville to Portland flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Knoxville to Portland right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Knoxville to Portland now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Portland and let you know when they change.

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