HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Portland

$93+ Cheap flights from Greenville to Portland, ME (GSP - 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 8/24. Fares are subject to change and may not be available on all flights or dates of travel.
GSP — PWM
Jul 5 — Jul 121
Sat 7/5
Sat 7/12
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Greenville to Portland with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Greenville to Portland are usually found in September or October, booked 69 days in advance, depart on a Saturday or Tuesday and return on a Tuesday

Cheap flight deals from Greenville to Portland

Discover tips and strategies to find the most affordable flight options for your journey from Greenville (GSP) 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 June 30, 2025.

Round-trip from

$237
(Delta)

One-way from

$93
(Breeze Airways)

Popular in

March

Cheapest in

September

Average price

$409
From Greenville to Portland
Search Deals
One-way flight from Greenville to Portland
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($53 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2025
Search Deals

Find flight deals from Greenville to Portland

Cheapest flights from Greenville to Portland
Explore the most affordable flight options available from Greenville to Portland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 30, 2025.

This Delta deal was found by Cheapflights users on 6/29. 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.
Tue 8/126:30 amGSP - PWM
1 stop5h 59mDelta
Tue 8/196:00 amPWM - GSP
1 stop4h 24mDelta
Deal found 6/29$237
This American Airlines deal was found by Cheapflights users on 6/29. 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.
Wed 10/17:44 pmGSP - PWM
1 stop4h 08mAmerican Airlines
Sat 10/46:00 amPWM - GSP
1 stop4h 55mAmerican Airlines
Deal found 6/29$259
This Priceline deal was found by Cheapflights users on 6/29. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/1310:34 amGSP - PWM
1 stop3h 58mBreeze Airways
Sun 8/313:17 pmPWM - GSP
1 stop4h 09mBreeze Airways
Deal found 6/29$268
This United Airlines deal was found by Cheapflights users on 6/29. 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.
Tue 8/512:45 pmGSP - PWM
2 stops10h 29mUnited Airlines
Tue 8/125:35 amPWM - GSP
1 stop4h 17mUnited Airlines
Deal found 6/29$289
This Southwest deal was found by Cheapflights users on 6/29. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/110:25 amGSP - PWM
2 stops12h 00mSouthwest
Sat 10/45:50 amPWM - GSP
2 stops12h 25mSouthwest
Deal found 6/29$341

Cheapflights Fare Finder

Customize your flight search to find flights from Greenville 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 June 30, 2025.
Use the filters below to find and compare flights from Greenville to Portland that are best for you.

Fly from

Greenville

Fly to

Portland

Route

Depart

Return

Price

GreenvillePortland

GSP - PWM

GSPPWM

Greenville

Tue 8/12

6:30 am-12:29 pm

1 stop5h 59m

Portland

Tue 8/19

6:00 am-10:24 am

1 stop4h 24m

$237

GreenvillePortland

GSP - PWM

GSPPWM

Greenville

Wed 10/1

7:44 pm-11:52 pm

1 stop4h 08m

Portland

Sat 10/4

6:00 am-10:55 am

1 stop4h 55m

$259

GreenvillePortland

GSP - PWM

GSPPWM

Greenville

Sun 7/13

10:34 am-2:32 pm

1 stop3h 58m

Portland

Sun 8/31

3:17 pm-7:26 pm

1 stop4h 09m

$268

GreenvillePortland

GSP - PWM

GSPPWM

Greenville

Tue 8/5

12:45 pm-11:14 pm

2 stops10h 29m

Portland

Tue 8/12

5:35 am-9:52 am

1 stop4h 17m

$289

GreenvillePortland

GSP - PWM

GSPPWM

Greenville

Wed 10/1

10:25 am-10:25 pm

2 stops12h 00m

Portland

Sat 10/4

5:50 am-6:15 pm

2 stops12h 25m

$341

GreenvillePortland

GSP - PWM

GSPPWM

Greenville

Sun 8/24

10:34 am-2:32 pm

1 stop3h 58m

$93

GreenvillePortland

GSP - PWM

GSPPWM

Greenville

Wed 8/13

8:55 am-3:02 pm

1 stop6h 07m

$119

GreenvillePortland

GSP - PWM

GSPPWM

Greenville

Wed 8/13

6:30 am-4:10 pm

2 stops9h 40m

$124

GreenvillePortland

GSP - PWM

GSPPWM

Greenville

Sun 8/24

7:15 am-4:50 pm

2 stops9h 35m

$168

GreenvillePortland

GSP - PWM

GSPPWM

Greenville

Thu 7/24

2:52 pm-11:14 pm

2 stops8h 22m

$207

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/30

Showing 1-10 of 11 results
1
2

Best time to book a flight from Greenville to Portland

Have a flexible travel schedule? Discover the best time to fly to Portland from Greenville 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 Greenville to Portland

How far ahead should I book a flight from Greenville to Portland, Maine?

Use this chart to determine the optimal time to book a round-trip flight from Greenville to Portland. Price data was last updated on June 27, 2025.

The best time to book flights from Greenville to Portland, Maine is 68 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, January is the cheapest month in which you can book a flight from Greenville to Portland, Maine (average of $296). Flying from Greenville 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 GSP to PWM?

Find hourly flight availability from Greenville 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 June 30, 2025.

One of the essential ways to save on airfare from Greenville to Portland, Maine is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight at noon could potentially save you up to 30% on airfare.

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 June 30, 2025.
See what other customers who have flown with Breeze Airways, Southwest, and Delta from Greenville to Portland have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Breeze Airways
8.1
Very good
182 reviews

Food

6.8

Entertainment

6.6

Overall

8.1

Boarding

8.4

Crew

8.8

Comfort

8.2

Reviews

1 / 11
10.0
Excellent

Dena,Dec 2024

LAS - BDL

It was comfortable and the crew was great! A few free snacks offered would be nice!
Breeze Airways
8.1
Very good
182 reviews
Breeze Airways
8.1
Very good
182 reviews

Food

6.8

Entertainment

6.6

Overall

8.1

Boarding

8.4

Crew

8.8

Comfort

8.2

Reviews

1 / 11
10.0
Excellent

Dena,Dec 2024

LAS - BDL

It was comfortable and the crew was great! A few free snacks offered would be nice!
Southwest
8.0
Very good
4,278 reviews
Breeze Airways
8.1
Very good
182 reviews

Food

6.8

Entertainment

6.6

Overall

8.1

Boarding

8.4

Crew

8.8

Comfort

8.2

Reviews

1 / 11
10.0
Excellent

Dena,Dec 2024

LAS - BDL

It was comfortable and the crew was great! A few free snacks offered would be nice!
Delta
8.0
Very good
7,969 reviews
Breeze Airways
8.1
Very good
182 reviews

Food

6.8

Entertainment

6.6

Overall

8.1

Boarding

8.4

Crew

8.8

Comfort

8.2

Reviews

1 / 11
10.0
Excellent

Dena,Dec 2024

LAS - BDL

It was comfortable and the crew was great! A few free snacks offered would be nice!
United Airlines
7.4
Good
8,852 reviews
Breeze Airways
8.1
Very good
182 reviews

Food

6.8

Entertainment

6.6

Overall

8.1

Boarding

8.4

Crew

8.8

Comfort

8.2

Reviews

1 / 11
10.0
Excellent

Dena,Dec 2024

LAS - BDL

It was comfortable and the crew was great! A few free snacks offered would be nice!
American Airlines
7.2
Good
10,000 reviews
Breeze Airways
8.1
Very good
182 reviews

Food

6.8

Entertainment

6.6

Overall

8.1

Boarding

8.4

Crew

8.8

Comfort

8.2

Reviews

1 / 11
10.0
Excellent

Dena,Dec 2024

LAS - BDL

It was comfortable and the crew was great! A few free snacks offered would be nice!

Related info for your journey

Find useful and relevant information for your journey from Greenville 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 Greenville to Portland, Maine round-trip?

    Flying on Delta is currently your cheapest option to Portland, Maine, with prices starting at $237. Additional round-trip tickets that might be worth considering are offered by American Airlines and Breeze Airways, with the lowest prices starting at $259 and $268, respectively. You may be able to fly from Greenville to Portland, Maine for 39% less than the average price by searching for these airlines.

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

    To fly one-way, consider booking your trip with Breeze Airways, which is currently one of the cheapest options available, starting at $93. American Airlines flights start at $119 while deals on Delta start at $124 one-way.

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

    Yes. In addition to deals on Greenville to Portland flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Greenville to Portland?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Greenville to Portland.

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

    Yes. Cheapflights offers flight deals from Greenville 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 Greenville to Portland, Maine?

    Currently, January is the cheapest month in which you can book a flight from Greenville to Portland, Maine (average of $296). Flying from Greenville 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 Greenville?

Book flights to Greenville if you plan to visit one of these locations
North Conway
Brunswick
Auburn
Conway
Lewiston

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Greenville to Portland

See prices for flight routes from nearby airports that may be better suited for you.
Charlotte to Boston flights
Charleston to Boston flights
Charlotte to Portland flights
Greenville to Boston flights
Savannah to Boston flights
Charlotte to Bangor flights
Columbia to Boston flights
Myrtle Beach to Boston flights
Greenville to Bangor flights
Columbia to Bangor flights
Augusta to Boston flights
Charleston to Bangor flights
Myrtle Beach to Portland flights
Myrtle Beach to Bangor flights
Charleston to Portland flights
Augusta to Portland flights
Hilton Head Island to Boston flights
Savannah to Portland flights
Hilton Head Island to Portland flights
Savannah to Bangor flights
Columbia to Portland flights
Florence to Boston flights
Charlotte to Bar Harbor flights
Florence to Bangor flights
Charlotte to Rockland flights
Charleston to Bar Harbor flights
Charlotte to Presque Isle flights
Charlotte to Augusta flights

Top 5 airlines flying from Greenville to Portland

Discover the top 5 airlines that operate flights from Greenville 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 June 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
Breeze AirwaysCheapest$98Average$235FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$266Average$378FlexibilityNo cancel feeOn-time71%
DeltaCheapest$270Average$358FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$296Average$406FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$296Average$436FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.