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 $329, and United Airlines, from $394. American Airlines is 30% 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 $194. Users have also found prices from $210 and $287 on Delta and United Airlines, respectively.

What is the cheapest day to fly from Knoxville to Portland, Maine?

Travelers seeking maximum savings on their Knoxville to Portland, Maine flight should consider departing on Thursday afternoons when fares are most often at their lowest. Thursday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

What are the most popular airlines that fly from Knoxville to Portland, Maine?

Consider American Airlines, Delta or United Airlines when booking your flight. These represent the most popular airlines when flying from Knoxville to Portland, Maine.

What is the cheapest day to fly round-trip from Knoxville to Portland, Maine?

Users have found that leaving on a Tuesday can be a cost-effective option. It’s possible to save up to 36% on your flight compared to booking on days when demand is much higher.

How far in advance should I book a flight from Knoxville to Portland, Maine?

Users have found that booking a flight from Knoxville to Portland, Maine at least 17 days early can save you up to 88% on average compared to booking a flight this week. If booking 17 days before your flight isn’t an option for you, users have found flights from Knoxville to Portland, Maine for as little as $360 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as $458 for flights departing within the next 3 days.

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

January can be a great time to fly to Portland, Maine from Knoxville with a flight ticket averaging about $374. Cheapflights users have found deals in the month of January for as cheap as $258. The most expensive prices can be found in the month of May.

Most accurate provider : When it comes to deals on Knoxville-Portland, Maine flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Knoxville-Portland, Maine flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Knoxville-Portland, Maine flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Knoxville-Portland, Maine flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Knoxville-Portland, Maine flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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.

$194+ Save on Flights from Knoxville to Portland, ME

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1. Tell us where you want to go

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Cheapflights Tip: The best prices from Knoxville McGhee Tyson to Portland are usually found in January or November, booked 16 days in advance, depart on a Wednesday or Thursday and return on a Saturday

Cheap flight deals from Knoxville to Portland

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$259 (American Airlines)
One-way from	$194 (American Airlines)
Popular in	May
Cheapest in	January
Average price	$308

Provider with most accurate pricing for Knoxville McGhee Tyson-Portland flight deals.

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Provider most trusted by Cheapflights users for Knoxville McGhee Tyson-Portland flights.

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From Knoxville McGhee Tyson to Portland

Search Deals

One-way flight from Knoxville McGhee Tyson to Portland

Search Deals

Highest demand for flights based on searches. 21% potential increase in price ($102 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 5% potential price decrease ($20 potential savings vs. average RT price).

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Average for round-trip flights in March 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 March 25, 2025.

Sat 5/34:10 pmTYS - PWM

1 stop5h 55mAmerican Airlines

Mon 5/54:01 pmPWM - TYS

1 stop4h 54mAmerican Airlines

Deal found 3/24

$259

Sat 4/51:30 pmTYS - PWM

1 stop5h 39mDelta

Tue 4/86:15 amPWM - TYS

1 stop4h 33mDelta

Deal found 3/23

$329

Tue 3/257:20 pmTYS - PWM

1 stop4h 27mUnited Airlines

Mon 3/316:45 pmPWM - TYS

1 stop5h 14mUnited Airlines

Deal found 3/24

$379

Thu 5/229:30 amTYS - PWM

3 stops34h 07mMultiple Airlines

Sun 5/253:30 pmPWM - TYS

1 stop24h 00mMultiple Airlines

Deal found 3/24

$540

Best flights from Knoxville to Portland
Discover carefully curated flight deals from Knoxville to Portland that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 25, 2025.

Sat 5/34:10 pmTYS - PWM

1 stop5h 55mAmerican Airlines

Mon 5/54:01 pmPWM - TYS

1 stop4h 54mAmerican Airlines

Deal found 3/24

$259

Sat 4/51:30 pmTYS - PWM

1 stop5h 39mDelta

Tue 4/86:15 amPWM - TYS

1 stop4h 33mDelta

Deal found 3/23

$329

Sat 5/35:50 amTYS - PWM

2 stops8h 05mUnited Airlines

Mon 5/52:37 pmPWM - TYS

2 stops8h 08mUnited Airlines

Deal found 3/24

$394

Thu 5/229:30 amTYS - PWM

3 stops34h 07mMultiple Airlines

Sun 5/253:30 pmPWM - TYS

1 stop24h 00mMultiple Airlines

Deal found 3/24

$540

Last-minute flights from Knoxville to Portland
Discover last-minute flight deals from Knoxville to Portland. Data last updated March 25, 2025 and is based on user searches.

Tue 3/257:20 pmTYS - PWM

1 stop4h 27mUnited Airlines

Mon 3/316:45 pmPWM - TYS

1 stop5h 14mUnited Airlines

Deal found 3/24

$379

Sat 4/51:30 pmTYS - PWM

1 stop5h 39mDelta

Tue 4/86:15 amPWM - TYS

1 stop4h 33mDelta

Deal found 3/23

$329

Sat 4/51:00 pmTYS - PWM

2 stops9h 05mAmerican Airlines

Tue 4/85:18 pmPWM - TYS

2 stops6h 27mAmerican Airlines

Deal found 3/23

$339

One-way flights from Knoxville to Portland
Search for one-way flight options from Knoxville to Portland. Find affordable one-way fares based on user searches. Data last updated March 25, 2025.

Sat 8/165:22 amTYS - PWM

1 stop9h 40mAmerican Airlines

Deal found 3/24

$194

Fri 8/155:30 amTYS - PWM

1 stop6h 34mDelta

Deal found 3/24

$210

Fri 8/151:56 pmTYS - PWM

2 stops9h 18mUnited Airlines

Deal found 3/24

$287

Cheapflights Fare Finder

Use the filters below to find and compare flights from Knoxville to Portland that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

KnoxvillePortland

TYS - PWM

TYSPWM

Knoxville McGhee Tyson

Sat 5/3

4:10 pm-10:05 pm

1 stop5h 55m

Portland

Mon 5/5

4:01 pm-8:55 pm

1 stop4h 54m

$259

KnoxvillePortland

TYS - PWM

TYSPWM

Knoxville McGhee Tyson

Sat 4/5

1:30 pm-7:09 pm

1 stop5h 39m

Portland

Tue 4/8

6:15 am-10:48 am

1 stop4h 33m

$329

KnoxvillePortland

TYS - PWM

TYSPWM

Knoxville McGhee Tyson

Sat 5/3

5:50 am-1:55 pm

2 stops8h 05m

Portland

Mon 5/5

2:37 pm-10:45 pm

2 stops8h 08m

$394

KnoxvillePortland

TYS - PWM

TYSPWM

Knoxville McGhee Tyson

Thu 5/22

9:30 am-7:37 pm

3 stops34h 07m

Portland

Sun 5/25

3:30 pm-3:30 pm

1 stop24h 00m

$540

KnoxvillePortland

TYS - PWM

TYSPWM

Knoxville McGhee Tyson

Sat 8/16

5:22 am-3:02 pm

1 stop9h 40m

$194

KnoxvillePortland

TYS - PWM

TYSPWM

Knoxville McGhee Tyson

Fri 8/15

5:30 am-12:04 pm

1 stop6h 34m

$210

KnoxvillePortland

TYS - PWM

TYSPWM

Knoxville McGhee Tyson

Fri 8/15

1:56 pm-11:14 pm

2 stops9h 18m

$287

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/24

Compare providers for flights from Knoxville to Portland

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Knoxville to Portland in March.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*3 stars
eDreams	Price Accuracy3 stars	Trust Score*3 stars
Priceline	Price Accuracy1 star	Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on Knoxville-Portland, Maine flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Knoxville-Portland, Maine flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Knoxville-Portland, Maine flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Knoxville-Portland, Maine flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Knoxville-Portland, Maine flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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?

Booking 16 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 April is currently the most expensive (average of $423). 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?

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

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

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

Delta

8.0

Very good

7,890 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Delta

8.0

Very good

7,890 reviews

Delta

8.0

Very good

7,890 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

United Airlines

7.4

Good

8,605 reviews

Delta

8.0

Very good

7,890 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

American Airlines

7.2

Good

10,000 reviews

Delta

8.0

Very good

7,890 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

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 $329, and United Airlines, from $394. American Airlines is 30% 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 $194. Users have also found prices from $210 and $287 on Delta and United Airlines, 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 April is currently the most expensive (average of $423). 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.

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Top 3 airlines flying from Knoxville to Portland

Airline	Cheapest	Average	Flexibility	On-time
Delta	Cheapest$246	Average$276	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$248	Average$372	FlexibilityNo cancel fee	On-time71%
United Airlines	Cheapest$258	Average$442	FlexibilityNo cancel fee	On-time69%

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$194+ 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 8/16. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Knoxville to Portland with Cheapflights

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2. Select your favorite providers

3. Compare prices and book

Cheapflights Tip: The best prices from Knoxville McGhee Tyson to Portland are usually found in January or November, booked 16 days in advance, depart on a Wednesday or Thursday and return on a Saturday

Cheap flight deals from Knoxville to Portland

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Knoxville to Portland

Cheapest flights from Knoxville to PortlandExplore 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 March 25, 2025.

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 March 25, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Knoxville to Portland that are best for you.

Compare providers for flights from Knoxville to Portland

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Knoxville to Portland in March.

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.

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 March 21, 2025.

What is the cheapest month to book a flight from Knoxville to Portland, Maine?

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 March 25, 2025.

Rainfall in Portland by month

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

Temperature in Portland by month

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

Reviews of airlines servicing Portland

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?

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

Can I find deals for flights from Knoxville to Portland that include hotel bookings?

How can I find direct flights from Knoxville to Portland?

Can I find deals for business class flights from Knoxville to Portland?

What is the cheapest month to book a flight from Knoxville to Portland, Maine?

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Top 3 airlines flying from Knoxville to Portland

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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 March 25, 2025.