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$142+ 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 1/16. Fares are subject to change and may not be available on all flights or dates of travel.
GSP — PWM
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
1 adult, Economy
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1. Tell us where you want to go

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Cheapflights Tip: The best prices from Greenville to Portland are usually found in September or October, booked 73 days in advance, depart on a Saturday or Tuesday and return on a Tuesday

Cheap 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 December 12, 2025.

This American Airlines deal was found by Cheapflights users on 12/12. 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 12/248:00 amGSP - PWM
2 stops10h 11mAmerican Airlines
Mon 1/55:20 pmPWM - GSP
1 stop5h 15mAmerican Airlines
Deal found 12/12$403
This Delta deal was found by Cheapflights users on 12/11. 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.
Thu 12/257:30 amGSP - PWM
1 stop4h 47mDelta
Mon 12/295:45 amPWM - GSP
1 stop6h 13mDelta
Deal found 12/11$464
This Kiwi.com deal was found by Cheapflights users on 12/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/268:03 pmGSP - PWM
1 stop14h 33mMultiple Airlines
Tue 12/3010:49 amPWM - GSP
1 stop10h 14mMultiple Airlines
Deal found 12/11$510
This United Airlines deal was found by Cheapflights users on 12/10. 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.
Wed 12/2411:55 amGSP - PWM
2 stops11h 27mUnited Airlines
Mon 1/56:46 pmPWM - GSP
2 stops24h 43mUnited Airlines
Deal found 12/10$558
This American Airlines deal was found by Cheapflights users on 12/11. 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.
Thu 12/259:45 amGSP - PWM
2 stops8h 26mAmerican Airlines
Mon 12/295:48 amPWM - GSP
1 stop4h 25mAmerican Airlines
Deal found 12/11$609
This Delta deal was found by Cheapflights users on 12/11. 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.
Thu 12/257:30 amGSP - PWM
1 stop4h 47mDelta
Sun 12/285:45 amPWM - GSP
1 stop6h 13mDelta
Deal found 12/11$649
This United Airlines deal was found by Cheapflights users on 12/11. 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.
Fri 12/125:28 pmGSP - PWM
2 stops20h 51mUnited Airlines
Mon 1/56:46 pmPWM - GSP
1 stop5h 10mUnited Airlines
Deal found 12/11$655

Find 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 December 12, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$339
(United Airlines)

One-way from

$142
(Kiwi.com)

Popular in

December

Cheapest in

September

Average price

$507
Provider with most accurate pricing for Greenville-Portland flight deals.
Search Deals
Provider most trusted by Cheapflights users for Greenville-Portland flights.
Search Deals
From Greenville to Portland
Search Deals
One-way flight from Greenville to Portland
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($36 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 December 2025
Search Deals

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 December 12, 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

Sat 2/14

10:00 am-2:23 pm

1 stop4h 23m

Portland

Wed 2/18

6:00 am-11:21 am

1 stop5h 21m

$339

GreenvillePortland

GSP - PWM

GSPPWM

Greenville

Thu 1/22

7:42 pm-12:06 pm

1 stop16h 24m

Portland

Sun 1/25

12:46 pm-10:16 pm

1 stop9h 30m

$358

GreenvillePortland

GSP - PWM

GSPPWM

Greenville

Sat 5/2

5:45 am-11:55 am

2 stops6h 10m

Portland

Thu 5/7

1:35 pm-9:25 pm

1 stop7h 50m

$392

GreenvillePortland

GSP - PWM

GSPPWM

Greenville

Wed 12/24

8:00 am-6:11 pm

2 stops10h 11m

Portland

Mon 1/5

5:20 pm-10:35 pm

1 stop5h 15m

$403

GreenvillePortland

GSP - PWM

GSPPWM

Greenville

Fri 1/16

9:49 pm-5:38 pm

1 stop19h 49m

$142

GreenvillePortland

GSP - PWM

GSPPWM

Greenville

Fri 1/16

10:45 am-10:45 pm

2 stops12h 00m

$244

GreenvillePortland

GSP - PWM

GSPPWM

Greenville

Thu 12/18

7:37 am-11:49 am

1 stop4h 12m

$349

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/10

Compare providers for flights from Greenville 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 Greenville to Portland in December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust 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 Greenville-Portland, Maine flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Greenville-Portland, Maine flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Greenville-Portland, Maine flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Greenville-Portland, Maine flights, Cheapflights users trust eDreams the most. eDreams 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 Greenville-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 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 December 5, 2025.

The best time to book flights from Greenville to Portland, Maine is 72 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, July is the cheapest month in which you can book a flight from Greenville to Portland, Maine (average of $63). Flying from Greenville to Portland, Maine in November is currently the most expensive (average of $128). 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 December 12, 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 29% 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 December 12, 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
8.2
Very good
244 reviews

Comfort

8.2

Boarding

8.4

Food

6.7

Crew

8.8

Entertainment

6.6

Overall

8.2

Reviews

1 / 15
8.0
Excellent

Lyle,Dec 2025

BDL - RSW

Seating was comfortable, crew excellent, no food or entertainment offered.
Breeze Airways
8.2
Very good
244 reviews
Breeze Airways
8.2
Very good
244 reviews

Comfort

8.2

Boarding

8.4

Food

6.7

Crew

8.8

Entertainment

6.6

Overall

8.2

Reviews

1 / 15
8.0
Excellent

Lyle,Dec 2025

BDL - RSW

Seating was comfortable, crew excellent, no food or entertainment offered.
Southwest
7.9
Good
4,252 reviews
Breeze Airways
8.2
Very good
244 reviews

Comfort

8.2

Boarding

8.4

Food

6.7

Crew

8.8

Entertainment

6.6

Overall

8.2

Reviews

1 / 15
8.0
Excellent

Lyle,Dec 2025

BDL - RSW

Seating was comfortable, crew excellent, no food or entertainment offered.
Delta
7.9
Good
8,009 reviews
Breeze Airways
8.2
Very good
244 reviews

Comfort

8.2

Boarding

8.4

Food

6.7

Crew

8.8

Entertainment

6.6

Overall

8.2

Reviews

1 / 15
8.0
Excellent

Lyle,Dec 2025

BDL - RSW

Seating was comfortable, crew excellent, no food or entertainment offered.
United Airlines
7.4
Good
9,095 reviews
Breeze Airways
8.2
Very good
244 reviews

Comfort

8.2

Boarding

8.4

Food

6.7

Crew

8.8

Entertainment

6.6

Overall

8.2

Reviews

1 / 15
8.0
Excellent

Lyle,Dec 2025

BDL - RSW

Seating was comfortable, crew excellent, no food or entertainment offered.
American Airlines
7.2
Good
11,048 reviews
Breeze Airways
8.2
Very good
244 reviews

Comfort

8.2

Boarding

8.4

Food

6.7

Crew

8.8

Entertainment

6.6

Overall

8.2

Reviews

1 / 15
8.0
Excellent

Lyle,Dec 2025

BDL - RSW

Seating was comfortable, crew excellent, no food or entertainment offered.

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.

  • How long is the flight from Greenville to Portland, Maine?

    For as low as $339, United Airlines can have you in Portland, Maine from Greenville in 4h 23m. Airlines will cover a distance of 876 mi.

  • What are the cheapest airlines flying from Greenville to Portland, Maine round-trip?

    Flying on Breeze Airways is currently your cheapest option to Portland, Maine, with prices starting at $98. Additional round-trip tickets that might be worth considering are offered by Delta and American Airlines, with the lowest prices starting at $183 and $270, respectively. You may be able to fly from Greenville to Portland, Maine for 75% 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 $83. Delta flights start at $118 while deals on American Airlines start at $135 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, July is the cheapest month in which you can book a flight from Greenville to Portland, Maine (average of $63). Flying from Greenville to Portland, Maine in November is currently the most expensive (average of $128). 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 Portland?

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

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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 December 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Breeze AirwaysCheapest$98Average$253FlexibilityNo cancel feeOn-timeN/A
DeltaCheapest$270Average$378FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$270Average$388FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$279Average$411FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$280Average$476FlexibilityNo cancel feeOn-time69%

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