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$149+ 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 7/19. Fares are subject to change and may not be available on all flights or dates of travel.
GSP — PWM
jun. 20 — jun. 271
fr. 6/20
fr. 6/27
1 adult, Economy
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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 juni 15, 2025.

Round-trip from

$189
(Breeze Airways)

One-way from

$149
(American Airlines)

Popular in

March

Cheapest in

September

Average price

$391
From Greenville to Portland
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One-way flight from Greenville to Portland
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Highest demand for flights based on searches. 12% potential increase in price ($54 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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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 juni 15, 2025.

This Breeze Airways deal was found by Cheapflights users on 6/13. 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 Breeze Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
to. 9/1810:33 amGSP - PWM
1 stop3h 57mBreeze Airways
sø. 9/213:15 pmPWM - GSP
1 stop4h 08mBreeze Airways
Deal found 6/13$189
This American Airlines deal was found by Cheapflights users on 6/13. 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.
ti. 8/57:40 pmGSP - PWM
1 stop4h 19mAmerican Airlines
ma. 8/186:00 amPWM - GSP
1 stop6h 30mAmerican Airlines
Deal found 6/13$217
This Delta deal was found by Cheapflights users on 6/14. 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.
on. 8/66:30 amGSP - PWM
2 stops9h 41mDelta
lø. 8/236:00 amPWM - GSP
1 stop5h 29mDelta
Deal found 6/14$249
This Southwest deal was found by Cheapflights users on 6/12. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
to. 10/308:25 amGSP - PWM
1 stop8h 05mSouthwest
lø. 11/15:50 amPWM - GSP
1 stop4h 05mSouthwest
Deal found 6/12$282
This United Airlines deal was found by Cheapflights users on 6/14. 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.
ti. 7/158:00 amGSP - PWM
1 stop5h 20mUnited Airlines
ti. 7/2210:48 amPWM - GSP
1 stop6h 15mUnited Airlines
Deal found 6/14$297
This Mytrip deal was found by Cheapflights users on 6/14. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
to. 6/2610:34 amGSP - PWM
2 stops25h 11mMultiple Airlines
sø. 6/2912:46 pmPWM - GSP
3 stops26h 30mMultiple Airlines
Deal found 6/14$705

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 juni 15, 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

to. 9/18

10:33 am-2:30 pm

1 stop3h 57m

Portland

sø. 9/21

3:15 pm-7:23 pm

1 stop4h 08m

$189

GreenvillePortland

GSP - PWM

GSPPWM

Greenville

ti. 8/5

7:40 pm-11:59 pm

1 stop4h 19m

Portland

ma. 8/18

6:00 am-12:30 pm

1 stop6h 30m

$217

GreenvillePortland

GSP - PWM

GSPPWM

Greenville

on. 8/6

6:30 am-4:11 pm

2 stops9h 41m

Portland

lø. 8/23

6:00 am-11:29 am

1 stop5h 29m

$249

GreenvillePortland

GSP - PWM

GSPPWM

Greenville

to. 10/30

8:25 am-4:30 pm

1 stop8h 05m

Portland

lø. 11/1

5:50 am-9:55 am

1 stop4h 05m

$282

GreenvillePortland

GSP - PWM

GSPPWM

Greenville

ti. 7/15

8:00 am-1:20 pm

1 stop5h 20m

Portland

ti. 7/22

10:48 am-5:03 pm

1 stop6h 15m

$297

GreenvillePortland

GSP - PWM

GSPPWM

Greenville

to. 6/26

10:34 am-11:45 am

2 stops25h 11m

Portland

sø. 6/29

12:46 pm-3:16 pm

3 stops26h 30m

$705

GreenvillePortland

GSP - PWM

GSPPWM

Greenville

lø. 7/19

6:28 pm-11:19 pm

1 stop4h 51m

$149

GreenvillePortland

GSP - PWM

GSPPWM

Greenville

lø. 7/26

1:59 pm-12:57 am

2 stops10h 58m

$285

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/12

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 13, 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 juni 15, 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.

Rainfall in Portland by month

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

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

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 juni 15, 2025.
Get a feel of what it's like to fly with Breeze Airways, Southwest and Delta from Greenville to Portland by reading reviews from past customers. 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
179 reviews

Comfort

8.2

Crew

8.8

Food

6.7

Overall

8.1

Entertainment

6.6

Boarding

8.3

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
179 reviews
Breeze Airways
8.1
Very good
179 reviews

Comfort

8.2

Crew

8.8

Food

6.7

Overall

8.1

Entertainment

6.6

Boarding

8.3

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
4,285 reviews
Breeze Airways
8.1
Very good
179 reviews

Comfort

8.2

Crew

8.8

Food

6.7

Overall

8.1

Entertainment

6.6

Boarding

8.3

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
7,961 reviews
Breeze Airways
8.1
Very good
179 reviews

Comfort

8.2

Crew

8.8

Food

6.7

Overall

8.1

Entertainment

6.6

Boarding

8.3

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
8,793 reviews
Breeze Airways
8.1
Very good
179 reviews

Comfort

8.2

Crew

8.8

Food

6.7

Overall

8.1

Entertainment

6.6

Boarding

8.3

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
179 reviews

Comfort

8.2

Crew

8.8

Food

6.7

Overall

8.1

Entertainment

6.6

Boarding

8.3

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 Breeze Airways is currently your cheapest option to Portland, Maine, with prices starting at $189. Additional round-trip tickets that might be worth considering are offered by American Airlines and Delta, with the lowest prices starting at $217 and $249, respectively. You may be able to fly from Greenville to Portland, Maine for 51% less than the average price by searching for these airlines.

  • 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
Bath
Brunswick
Auburn
Conway
Lewiston

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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 juni 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
Breeze AirwaysCheapest$98Average$235FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$266Average$378FlexibilityNo cancel feeOn-time71%
DeltaCheapest$270Average$342FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$296Average$409FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$296Average$436FlexibilityNo cancel feeOn-time69%

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