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Cheap flights from Knoxville to Portland from $138

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 7/21. 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
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Knoxville to Portland

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
3:53 pm - 10:13 pm
TYS
-
PWM
6h 20m
1 stop
American Airlines Logo
5:18 pm - 10:50 pm
PWM
-
TYS
5h 32m
1 stop
$275American Airlines
Sat, Sep 19 - Sat, Sep 26
United Airlines Logo
7:19 pm - 11:51 pm
TYS
-
PWM
4h 32m
1 stop
United Airlines Logo
5:15 am - 10:42 am
PWM
-
TYS
5h 27m
1 stop
$297United Airlines
Wed, Jul 29 - Wed, Aug 5
American Airlines Logo
3:53 pm - 10:13 pm
TYS
-
PWM
6h 20m
1 stop
American Airlines Logo
7:00 am - 11:41 am
PWM
-
TYS
4h 41m
1 stop
$310American Airlines
Sat, Sep 19 - Sat, Sep 26
American Airlines Logo
3:53 pm - 10:13 pm
TYS
-
PWM
6h 20m
1 stop
American Airlines Logo
7:00 am - 11:41 am
PWM
-
TYS
4h 41m
1 stop
$315American Airlines
Sat, Sep 19 - Sat, Sep 26
American Airlines Logo
6:32 pm - 11:41 pm
TYS
-
PWM
5h 09m
1 stop
American Airlines Logo
5:30 am - 10:43 am
PWM
-
TYS
5h 13m
1 stop
$319American Airlines
Thu, Aug 20 - Mon, Aug 24
Delta Logo
5:00 pm - 9:31 pm
TYS
-
PWM
4h 31m
1 stop
Delta Logo
6:10 am - 10:58 am
PWM
-
TYS
4h 48m
1 stop
$326Delta
Sat, Aug 8 - Sat, Aug 15
United Airlines Logo
5:45 am - 1:25 pm
TYS
-
PWM
7h 40m
2 stops
United Airlines Logo
5:15 am - 10:42 am
PWM
-
TYS
5h 27m
1 stop
$342United Airlines
Wed, Jul 29 - Wed, Aug 5
American Airlines Logo
3:53 pm - 10:13 pm
TYS
-
PWM
6h 20m
1 stop
American Airlines Logo
7:00 am - 11:41 am
PWM
-
TYS
4h 41m
1 stop
$345American Airlines
Sat, Sep 26 - Sat, Oct 3
American Airlines Logo
6:50 pm - 11:59 pm
TYS
-
PWM
5h 09m
1 stop
American Airlines Logo
6:01 pm - 11:51 pm
PWM
-
TYS
5h 50m
1 stop
$346American Airlines
Tue, Jul 21 - Fri, Jul 24
American Airlines Logo
6:32 pm - 11:41 pm
TYS
-
PWM
5h 09m
1 stop
American Airlines Logo
5:30 am - 10:43 am
PWM
-
TYS
5h 13m
1 stop
$348American Airlines
Thu, Aug 20 - Sun, Aug 23

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American Airlines flights from Knoxville to Portland, Maine

Our best American Airlines deals on Knoxville to Portland, Maine flight tickets
American Airlines
Sep 19
TYS3:53 pmKnoxville McGhee Tyson
6h 20m
1 stop
PWM10:13 pmPortland
Sep 26
PWM5:18 pmPortland
5h 32m
1 stop
TYS10:50 pmKnoxville McGhee Tyson
$275
American Airlines
Sep 19
TYS3:53 pmKnoxville McGhee Tyson
6h 20m
1 stop
PWM10:13 pmPortland
Sep 26
PWM7:00 amPortland
4h 41m
1 stop
TYS11:41 amKnoxville McGhee Tyson
$310
American Airlines
Sep 19
TYS3:53 pmKnoxville McGhee Tyson
6h 20m
1 stop
PWM10:13 pmPortland
Sep 26
PWM7:00 amPortland
4h 41m
1 stop
TYS11:41 amKnoxville McGhee Tyson
$315

Southwest flights from Knoxville to Portland, Maine

Our best Southwest deals on Knoxville to Portland, Maine flight tickets
Southwest
Oct 1
TYS12:50 pmKnoxville McGhee Tyson
11h 15m
2 stops
PWM12:05 amPortland
Oct 6
PWM5:50 amPortland
10h 55m
2 stops
TYS4:45 pmKnoxville McGhee Tyson
$336
Southwest
Oct 1
TYS8:15 amKnoxville McGhee Tyson
3h 50m
1 stop
PWM12:05 pmPortland
Oct 6
PWM5:50 amPortland
10h 55m
2 stops
TYS4:45 pmKnoxville McGhee Tyson
$361
Southwest
Jul 28
TYS12:45 pmKnoxville McGhee Tyson
10h 15m
2 stops
PWM11:00 pmPortland
Jul 30
PWM5:35 amPortland
8h 10m
2 stops
TYS1:45 pmKnoxville McGhee Tyson
$416

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 July 2, 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

Sat 9/19

3:53 pm-10:13 pm

1 stop6h 20m

Portland

Sat 9/26

5:18 pm-10:50 pm

1 stop5h 32m

$275

KnoxvillePortland

TYS - PWM

TYSPWM

Knoxville McGhee Tyson

Wed 7/29

7:19 pm-11:51 pm

1 stop4h 32m

Portland

Wed 8/5

5:15 am-10:42 am

1 stop5h 27m

$297

KnoxvillePortland

TYS - PWM

TYSPWM

Knoxville McGhee Tyson

Sat 9/19

3:53 pm-10:13 pm

1 stop6h 20m

Portland

Sat 9/26

7:00 am-11:41 am

1 stop4h 41m

$310

KnoxvillePortland

TYS - PWM

TYSPWM

Knoxville McGhee Tyson

Sat 9/19

3:53 pm-10:13 pm

1 stop6h 20m

Portland

Sat 9/26

7:00 am-11:41 am

1 stop4h 41m

$315

KnoxvillePortland

TYS - PWM

TYSPWM

Knoxville McGhee Tyson

Thu 8/20

6:32 pm-11:41 pm

1 stop5h 09m

Portland

Mon 8/24

5:30 am-10:43 am

1 stop5h 13m

$319
Quickest round-trip

KnoxvillePortland

TYS - PWM

TYSPWM

Knoxville McGhee Tyson

Sat 8/8

5:00 pm-9:31 pm

1 stop4h 31m

Portland

Sat 8/15

6:10 am-10:58 am

1 stop4h 48m

$326

KnoxvillePortland

TYS - PWM

TYSPWM

Knoxville McGhee Tyson

Wed 7/29

5:45 am-1:25 pm

2 stops7h 40m

Portland

Wed 8/5

5:15 am-10:42 am

1 stop5h 27m

$342

KnoxvillePortland

TYS - PWM

TYSPWM

Knoxville McGhee Tyson

Sat 9/26

3:53 pm-10:13 pm

1 stop6h 20m

Portland

Sat 10/3

7:00 am-11:41 am

1 stop4h 41m

$345

KnoxvillePortland

TYS - PWM

TYSPWM

Knoxville McGhee Tyson

Tue 7/21

6:50 pm-11:59 pm

1 stop5h 09m

Portland

Fri 7/24

6:01 pm-11:51 pm

1 stop5h 50m

$346

KnoxvillePortland

TYS - PWM

TYSPWM

Knoxville McGhee Tyson

Thu 8/20

6:32 pm-11:41 pm

1 stop5h 09m

Portland

Sun 8/23

5:30 am-10:43 am

1 stop5h 13m

$348

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 typical price of a round-trip flight between Knoxville and Portland, Maine?

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

The cheapest month to fly to Portland, Maine from Knoxville is in August. Flight prices, which tend to average around $368, 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 August, then flying in December is also cheap. Prices for this month can be found on momondo for an average of $378.

How have Knoxville to Portland, Maine flight prices changed over time?

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

3h 50m

Direct flights

None
The fastest flight from Knoxville to Portland, Maine takes 3h 50m
There are no direct flights from Knoxville to Portland, Maine. There are no popular flight routes from Knoxville to Portland, Maine.
Search flight deals

Frequently asked questions about flying from Knoxville to Portland, Maine

  • 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 3h 50m, 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
American AirlinesPriceFrom $258Free CancellationRating
7.1
11,768 reviews
Search American Airlines flights
DeltaPriceFrom $265Free CancellationRating
7.8
8,452 reviews
Search Delta flights
SouthwestPriceFrom $293Free CancellationRating
7.9
4,249 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
Lewiston
Brunswick
Conway
Freeport
Bartlett
Auburn
Gorham
Windham
Intervale
Bath
Oxford
Falmouth
Georgetown
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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