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$136+ Cheap flights from Portland, ME to Greenville (PWM - GSP)

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 8/27. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — GSP
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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Cheap flight deals from Portland to Greenville

Discover tips and strategies to find the most affordable flight options for your journey from Portland (PWM) to Greenville (GSP). 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 12, 2025.

Round-trip from

$271
(American Airlines)

One-way from

$136
(American Airlines)

Popular in

June

Cheapest in

July

Average price

$564
From Portland to Greenville
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One-way flight from Portland to Greenville
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Highest demand for flights based on searches. 5% potential increase in price ($21 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($15 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 Portland to Greenville

Cheapest flights from Portland to Greenville
Explore the most affordable flight options available from Portland to Greenville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.

This American Airlines deal was found by Cheapflights users on 6/11. 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.
Mon 9/155:10 pmPWM - GSP
1 stop5h 48mAmerican Airlines
Mon 9/228:05 amGSP - PWM
1 stop5h 02mAmerican Airlines
Deal found 6/11$271
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/56:00 amPWM - GSP
1 stop7h 14mDelta
Mon 8/112:09 pmGSP - PWM
2 stops10h 39mDelta
Deal found 6/12$276
This United Airlines deal was found by Cheapflights users on 6/11. 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 7/45:35 amPWM - GSP
2 stops11h 19mUnited Airlines
Sat 7/122:52 pmGSP - PWM
1 stop4h 35mUnited Airlines
Deal found 6/11$302
This Southwest deal was found by Cheapflights users on 6/9. 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.
Fri 6/275:40 pmPWM - GSP
1 stop4h 20mSouthwest
Sun 6/2910:25 amGSP - PWM
2 stops13h 55mSouthwest
Deal found 6/9$438
This Kiwi.com deal was found by Cheapflights users on 6/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/153:17 pmPWM - GSP
1 stop4h 09mBreeze Airways
Thu 6/2610:34 amGSP - PWM
1 stop3h 58mBreeze Airways
Deal found 6/10$559
This Mytrip deal was found by Cheapflights users on 6/11. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/38:52 pmPWM - GSP
2 stops18h 07mMultiple Airlines
Mon 7/142:50 pmGSP - PWM
3 stops22h 15mMultiple Airlines
Deal found 6/11$767

Cheapflights Fare Finder

Customize your flight search to find flights from Portland to Greenville 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 12, 2025.
Use the filters below to find and compare flights from Portland to Greenville that are best for you.

Fly from

Portland

Fly to

Greenville

Route

Depart

Return

Price

PortlandGreenville

PWM - GSP

PWMGSP

Portland

Mon 9/15

5:10 pm-10:58 pm

1 stop5h 48m

Greenville

Mon 9/22

8:05 am-1:07 pm

1 stop5h 02m

$271

PortlandGreenville

PWM - GSP

PWMGSP

Portland

Tue 8/5

6:00 am-1:14 pm

1 stop7h 14m

Greenville

Mon 8/11

2:09 pm-12:48 am

2 stops10h 39m

$276

PortlandGreenville

PWM - GSP

PWMGSP

Portland

Fri 7/4

5:35 am-4:54 pm

2 stops11h 19m

Greenville

Sat 7/12

2:52 pm-7:27 pm

1 stop4h 35m

$302

PortlandGreenville

PWM - GSP

PWMGSP

Portland

Fri 6/27

5:40 pm-10:00 pm

1 stop4h 20m

Greenville

Sun 6/29

10:25 am-12:20 am

2 stops13h 55m

$438

PortlandGreenville

PWM - GSP

PWMGSP

Portland

Thu 7/3

8:52 pm-2:59 pm

2 stops18h 07m

Greenville

Mon 7/14

2:50 pm-1:05 pm

3 stops22h 15m

$767

PortlandGreenville

PWM - GSP

PWMGSP

Portland

Fri 6/27

6:16 pm-9:54 am

2 stops39h 38m

Greenville

Sun 6/29

8:06 pm-2:07 pm

3 stops18h 01m

$778

PortlandGreenville

PWM - GSP

PWMGSP

Portland

Wed 8/27

2:06 pm-6:54 pm

1 stop4h 48m

$136

PortlandGreenville

PWM - GSP

PWMGSP

Portland

Wed 8/27

6:00 am-1:20 pm

2 stops7h 20m

$141

PortlandGreenville

PWM - GSP

PWMGSP

Portland

Thu 7/3

3:17 pm-7:26 pm

1 stop4h 09m

$180

PortlandGreenville

PWM - GSP

PWMGSP

Portland

Sun 7/27

5:40 am-7:45 pm

2 stops14h 05m

$274

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/12

Showing 1-10 of 12 results
1
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Best time to book a flight from Portland to Greenville

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

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

Currently, January is the cheapest month in which you can book a flight from Portland, Maine to Greenville (average of $329). Flying from Portland, Maine to Greenville in March is currently the most expensive (average of $386). 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 PWM to GSP?

Find hourly flight availability from Portland to Greenville. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 12, 2025.

One of the essential ways to save on airfare from Portland, Maine to Greenville is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the afternoon could potentially save you up to 11% on airfare.

Rainfall in Greenville by month

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

In terms of precipitation, rainfall in Greenville ranges from 3.6 - 5.1 inches per month. March is typically the wettest month, when rainfall can reach 5.1 in. November is typically the driest time to visit Greenville when rainfall is around 3.6 in.

Temperature in Greenville by month

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

If weather is an important factor for your trip to Greenville, 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 78.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 41.0 F).

Reviews of airlines servicing Greenville

Get insights into the airlines that provide service to Greenville. 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 Greenville. Reviews last updated June 12, 2025.
Get a feel of what it's like to fly with Breeze Airways, Southwest and Delta from Portland to Greenville by reading reviews from past customers. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Breeze Airways
8.1
Very good
178 reviews

Entertainment

6.6

Crew

8.8

Overall

8.1

Comfort

8.2

Boarding

8.3

Food

6.7

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
178 reviews
Breeze Airways
8.1
Very good
178 reviews

Entertainment

6.6

Crew

8.8

Overall

8.1

Comfort

8.2

Boarding

8.3

Food

6.7

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
4,287 reviews
Breeze Airways
8.1
Very good
178 reviews

Entertainment

6.6

Crew

8.8

Overall

8.1

Comfort

8.2

Boarding

8.3

Food

6.7

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
7,950 reviews
Breeze Airways
8.1
Very good
178 reviews

Entertainment

6.6

Crew

8.8

Overall

8.1

Comfort

8.2

Boarding

8.3

Food

6.7

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
8,790 reviews
Breeze Airways
8.1
Very good
178 reviews

Entertainment

6.6

Crew

8.8

Overall

8.1

Comfort

8.2

Boarding

8.3

Food

6.7

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
178 reviews

Entertainment

6.6

Crew

8.8

Overall

8.1

Comfort

8.2

Boarding

8.3

Food

6.7

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 Portland to Greenville. 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 Portland, Maine to Greenville round-trip?

    Currently priced at $271, American Airlines will fly you from Portland, Maine to Greenville and back. In addition to American Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Delta and United Airlines - these airlines can fly you to your destination from $276 and $302, respectively. American Airlines is priced at 33% lower than the current average price of a flight leaving 3 months from now.

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

    $136 is the cheapest one-way deal found within the past few days, from American Airlines. You may also be able to find cheap deals on Delta and Breeze Airways, with prices starting from $141 and $217, respectively.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Portland, Maine to Greenville (average of $329). Flying from Portland, Maine to Greenville in March is currently the most expensive (average of $386). 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
Simpsonville
Duncan
Seneca
Anderson

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Top 3 airlines flying from Portland to Greenville

Discover the top 3 airlines that operate flights from Portland to Greenville. 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 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$275Average$407FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$301Average$416FlexibilityNo cancel feeOn-time63%
DeltaCheapest$331Average$380FlexibilityNo cancel feeOn-timeN/A

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