What airlines fly to Portland, Maine?

American Airlines, Delta and Allegiant Air are the top three most popular airlines that fly to Portland, Maine from Greenville according to our data. American Airlines is the first choice among our users, with 68% of people opting to fly with this airline when traveling to Portland, Maine. Keep in mind that there are 9 different airlines that fly to Portland, Maine on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from Greenville to Portland?

American Airlines and United Airlines are the most popular carriers operating from Greenville to Portland

When did momondo last update prices for flights from Greenville Airport to Portland Airport?

Prices for flights from Greenville Airport to Portland Airport are refreshed on a daily basis.

How many operators does momondo search for flights from Greenville Airport to Portland Airport?

There are 5 operators available for flights from Greenville Airport to Portland Airport as of January 2026.

How old do you have to be to fly from Greenville Airport to Portland Airport?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Greenville Airport to Portland Airport.

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

The travel and health documents you'll need for your trip to Portland Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Portland Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$297 Cheap Flights from Greenville to Portland in 2026

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Find the cheapest flights from Greenville to Portland

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:00 am - 11:18 am

GSP

PWM

5h 18m

1 stop

4:48 pm - 10:05 pm

PWM

GSP

5h 17m

1 stop

$297Delta

Mon, Mar 2 - Tue, Mar 10

6:00 am - 11:18 am

GSP

PWM

5h 18m

1 stop

2:30 pm - 9:52 pm

PWM

GSP

7h 22m

2 stops

$302Delta

Mon, Mar 2 - Tue, Mar 10

6:21 pm - 11:12 pm

GSP

PWM

4h 51m

1 stop

5:23 am - 11:05 am

PWM

GSP

5h 42m

1 stop

$352Delta

Mon, Mar 16 - Sun, Mar 22

6:19 am - 2:03 pm

GSP

PWM

7h 44m

1 stop

1:31 pm - 10:38 pm

PWM

GSP

9h 07m

1 stop

$365American Airlines

Thu, Jul 23 - Mon, Jul 27

6:00 am - 11:59 am

GSP

PWM

5h 59m

1 stop

6:00 am - 10:19 am

PWM

GSP

4h 19m

1 stop

$366American Airlines

Sat, Feb 28 - Fri, Mar 6

10:35 am - 11:05 pm

GSP

PWM

12h 30m

2 stops

2:50 pm - 9:50 pm

PWM

GSP

7h 00m

1 stop

$379Southwest

Sat, Feb 28 - Fri, Mar 6

10:35 am - 2:26 pm

GSP

PWM

3h 51m

1 stop

3:11 pm - 7:11 pm

PWM

GSP

4h 00m

1 stop

$383Breeze Airways

Sun, Jul 12 - Thu, Jul 16

6:00 am - 11:01 am

GSP

PWM

5h 01m

1 stop

6:50 pm - 11:40 pm

PWM

GSP

4h 50m

1 stop

$387Delta

Wed, Jul 15 - Sat, Jul 25

10:35 am - 11:05 pm

GSP

PWM

12h 30m

2 stops

5:30 am - 5:45 pm

PWM

GSP

12h 15m

2 stops

$390Southwest

Sat, Feb 28 - Fri, Mar 6

6:00 am - 11:01 am

GSP

PWM

5h 01m

1 stop

6:30 am - 2:52 pm

PWM

GSP

8h 22m

2 stops

$392Delta

Sun, Jul 12 - Thu, Jul 16

American Airlines flights from Greenville to Portland, Maine

Our best American Airlines deals on Greenville to Portland, Maine flight tickets

American Airlines

Jul 23

GSP6:19 amGreenville

7h 44m

1 stop

PWM2:03 pmPortland

Jul 27

PWM1:31 pmPortland

9h 07m

1 stop

GSP10:38 pmGreenville

$365

American Airlines

Feb 28

GSP6:00 amGreenville

5h 59m

1 stop

PWM11:59 amPortland

Mar 6

PWM6:00 amPortland

4h 19m

1 stop

GSP10:19 amGreenville

$366

American Airlines

Mar 2

GSP5:20 amGreenville

6h 39m

2 stops

PWM11:59 amPortland

Mar 10

PWM6:00 amPortland

7h 15m

2 stops

GSP1:15 pmGreenville

$437

Southwest flights from Greenville to Portland, Maine

Our best Southwest deals on Greenville to Portland, Maine flight tickets

Southwest

Feb 28

GSP10:35 amGreenville

12h 30m

2 stops

PWM11:05 pmPortland

Mar 6

PWM2:50 pmPortland

7h 00m

1 stop

GSP9:50 pmGreenville

$379

Southwest

Feb 28

GSP10:35 amGreenville

12h 30m

2 stops

PWM11:05 pmPortland

Mar 6

PWM5:30 amPortland

12h 15m

2 stops

GSP5:45 pmGreenville

$390

Southwest

Mar 16

GSP12:25 pmGreenville

11h 40m

2 stops

PWM12:05 amPortland

Mar 22

PWM12:35 pmPortland

10h 50m

2 stops

GSP11:25 pmGreenville

$480

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

GreenvillePortland

GSP - PWM

GSPPWM

Greenville

Mon 3/2

6:00 am-11:18 am

1 stop5h 18m

Portland

Tue 3/10

4:48 pm-10:05 pm

1 stop5h 17m

$297

GreenvillePortland

GSP - PWM

GSPPWM

Greenville

Mon 3/2

6:00 am-11:18 am

1 stop5h 18m

Portland

Tue 3/10

2:30 pm-9:52 pm

2 stops7h 22m

$302

GreenvillePortland

GSP - PWM

GSPPWM

Greenville

Mon 3/16

6:21 pm-11:12 pm

1 stop4h 51m

Portland

Sun 3/22

5:23 am-11:05 am

1 stop5h 42m

$352

GreenvillePortland

GSP - PWM

GSPPWM

Greenville

Thu 7/23

6:19 am-2:03 pm

1 stop7h 44m

Portland

Mon 7/27

1:31 pm-10:38 pm

1 stop9h 07m

$365

GreenvillePortland

GSP - PWM

GSPPWM

Greenville

Sat 2/28

6:00 am-11:59 am

1 stop5h 59m

Portland

Fri 3/6

6:00 am-10:19 am

1 stop4h 19m

$366

GreenvillePortland

GSP - PWM

GSPPWM

Greenville

Sat 2/28

10:35 am-11:05 pm

2 stops12h 30m

Portland

Fri 3/6

2:50 pm-9:50 pm

1 stop7h 00m

$379

GreenvillePortland

GSP - PWM

GSPPWM

Greenville

Sun 7/12

10:35 am-2:26 pm

1 stop3h 51m

Portland

Thu 7/16

3:11 pm-7:11 pm

1 stop4h 00m

$383

GreenvillePortland

GSP - PWM

GSPPWM

Greenville

Wed 7/15

6:00 am-11:01 am

1 stop5h 01m

Portland

Sat 7/25

6:50 pm-11:40 pm

1 stop4h 50m

$387

GreenvillePortland

GSP - PWM

GSPPWM

Greenville

Sat 2/28

10:35 am-11:05 pm

2 stops12h 30m

Portland

Fri 3/6

5:30 am-5:45 pm

2 stops12h 15m

$390

GreenvillePortland

GSP - PWM

GSPPWM

Greenville

Sun 7/12

6:00 am-11:01 am

1 stop5h 01m

Portland

Thu 7/16

6:30 am-2:52 pm

2 stops8h 22m

$392

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 resultsSorted by cheapest first

How to get the cheapest flight ticket from Greenville 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

Prices

Airlines

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

The cheapest month to fly to Portland, Maine from Greenville is in January. Flight prices, which tend to average around $269, 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 January, then flying in September is also cheap. Prices for this month can be found on momondo for an average of $299.

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

You are more likely to see cheaper flights to Portland, Maine from Greenville when booking weeks ahead of your departure date. In general, you can expect to find flights to Portland, Maine for around $393 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Portland, Maine from Greenville for as low as $203 on momondo.

When to book flights from Greenville to Portland, Maine

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

Estimated round-trip price

Cheap Greenville to Portland, Maine (GSP to PWM) flight deals and tips

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

Fastest flight time	3h 51m
Direct flights	None

The fastest flight from Greenville to Portland, Maine takes 3h 51m

There are no direct flights from Greenville to Portland, Maine. There are no popular flight routes from Greenville to Portland, Maine.

Search flight deals

How far is Greenville to Portland by plane?
Portland is 887.7 mi away from Greenville. Flights usually cover this in 3h 51m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from Greenville Airport to Portland Airport?
Prices for flights from Greenville Airport to Portland Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Greenville Airport to Portland Airport?
There are 5 operators available for flights from Greenville Airport to Portland Airport as of January 2026.
How old do you have to be to fly from Greenville Airport to Portland Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Greenville Airport to Portland Airport.
What documentation or ID do you need to fly to Portland Airport?
The travel and health documents you'll need for your trip to Portland Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Portland Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from Greenville to Portland, Maine?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Greenville to Portland, Maine is American Airlines (42% of total bookings). The next most popular airlines are Delta (18%), Breeze Airways (18%), and Southwest (12%).

Best airlines flying from Greenville to Portland, Maine

Compare and see reviews for airlines that fly from Greenville to Portland, Maine with momondo

Airline	Rating	Free Cancellation	Price
Breeze Airways	PriceFrom $98	Free Cancellation	Rating 8.2 263 reviews	Search Breeze Airways flights
Delta	PriceFrom $183	Free Cancellation	Rating 7.9 8,119 reviews	Search Delta flights
American Airlines	PriceFrom $262	Free Cancellation	Rating 7.2 11,198 reviews	Search American Airlines flights
Southwest	PriceFrom $279	Free Cancellation	Rating 8.0 4,268 reviews	Search Southwest flights
United Airlines	PriceFrom $280	Free Cancellation	Rating 7.4 9,206 reviews	Search United Airlines flights

North Conway

Boothbay Harbor

Jackson

Conway

Freeport

Lewiston

Brunswick

Bartlett

Gorham

Auburn

Windham

Intervale

Bath

Oxford

Georgetown

Falmouth

Tamworth

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Greenville to Portland. momondo saves you time and could save you money on your trip.

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

Yes. momondo allows you to filter the results for Greenville to Portland flights to just show those with flexible booking policies.

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

momondo provides multiple filters to help you find the best flight to Portland from Greenville. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Price alerts on flights to Portland from Greenville are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.