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$149+ 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 5/6. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — GSP
Mar 30 — Apr 61
Sun 3/30
Sun 4/6
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 March 25, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$297
(Delta)

One-way from

$149
(American Airlines)

Popular in

June

Cheapest in

January

Average price

$399
Provider with most accurate pricing for Portland-Greenville flight deals.
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Provider most trusted by Cheapflights users for Portland-Greenville flights.
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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. 8% potential increase in price ($36 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in March 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 March 25, 2025.

This Delta deal was found by Cheapflights users on 3/23. 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 5/16:25 amPWM - GSP
1 stop4h 34mDelta
Wed 5/711:50 amGSP - PWM
1 stop5h 00mDelta
Deal found 3/23$297
This United Airlines deal was found by Cheapflights users on 3/24. 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 4/226:15 amPWM - GSP
1 stop4h 58mUnited Airlines
Tue 4/292:50 pmGSP - PWM
2 stops8h 37mUnited Airlines
Deal found 3/24$372
This Southwest deal was found by Cheapflights users on 3/23. 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 6/115:50 pmPWM - GSP
2 stops16h 05mSouthwest
Sat 6/1410:10 amGSP - PWM
2 stops8h 15mSouthwest
Deal found 3/23$393
This American Airlines deal was found by Cheapflights users on 3/22. 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 4/712:15 pmPWM - GSP
1 stop10h 24mAmerican Airlines
Fri 4/117:40 pmGSP - PWM
1 stop4h 14mAmerican Airlines
Deal found 3/22$401

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 March 25, 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

Thu 5/1

6:25 am-10:59 am

1 stop4h 34m

Greenville

Wed 5/7

11:50 am-4:50 pm

1 stop5h 00m

$297

PortlandGreenville

PWM - GSP

PWMGSP

Portland

Tue 4/22

6:15 am-11:13 am

1 stop4h 58m

Greenville

Tue 4/29

2:50 pm-11:27 pm

2 stops8h 37m

$372

PortlandGreenville

PWM - GSP

PWMGSP

Portland

Wed 6/11

5:50 pm-9:55 am

2 stops16h 05m

Greenville

Sat 6/14

10:10 am-6:25 pm

2 stops8h 15m

$393

PortlandGreenville

PWM - GSP

PWMGSP

Portland

Mon 4/7

12:15 pm-10:39 pm

1 stop10h 24m

Greenville

Fri 4/11

7:40 pm-11:54 pm

1 stop4h 14m

$401

PortlandGreenville

PWM - GSP

PWMGSP

Portland

Tue 5/6

1:07 pm-8:26 pm

1 stop7h 19m

$149

PortlandGreenville

PWM - GSP

PWMGSP

Portland

Sat 3/29

6:45 pm-2:30 pm

1 stop19h 45m

$238

PortlandGreenville

PWM - GSP

PWMGSP

Portland

Sat 3/29

3:00 pm-11:33 pm

2 stops8h 33m

$304

PortlandGreenville

PWM - GSP

PWMGSP

Portland

Thu 3/27

6:10 am-11:15 pm

3 stops17h 05m

$746

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/23

Compare providers for flights from Portland to Greenville

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 Portland to Greenville in March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
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 Portland, Maine-Greenville flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Portland, Maine-Greenville flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Portland, Maine-Greenville flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Portland, Maine-Greenville flights, Cheapflights users trust FlightHub the most. FlightHub 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 Portland, Maine-Greenville 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 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 $389). 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 March 25, 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 March 25, 2025.
Get a feel of what it's like to fly with Southwest, Delta and United Airlines 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.
Southwest
8.0
Very good
4,272 reviews

Entertainment

7.6

Overall

8.0

Food

7.1

Boarding

8.2

Crew

8.6

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Southwest
8.0
Very good
4,272 reviews
Southwest
8.0
Very good
4,272 reviews

Entertainment

7.6

Overall

8.0

Food

7.1

Boarding

8.2

Crew

8.6

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Delta
8.0
Very good
7,890 reviews
Southwest
8.0
Very good
4,272 reviews

Entertainment

7.6

Overall

8.0

Food

7.1

Boarding

8.2

Crew

8.6

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
United Airlines
7.4
Good
8,605 reviews
Southwest
8.0
Very good
4,272 reviews

Entertainment

7.6

Overall

8.0

Food

7.1

Boarding

8.2

Crew

8.6

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,272 reviews

Entertainment

7.6

Overall

8.0

Food

7.1

Boarding

8.2

Crew

8.6

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

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 $297, Delta will fly you from Portland, Maine to Greenville and back. In addition to Delta, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from American Airlines and Southwest - these airlines can fly you to your destination from $362 and $363, respectively. Delta is priced at 27% 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?

    $149 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 United Airlines, with prices starting from $304 and $746, 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 $389). 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
Seneca
Duncan
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 March 25, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$292Average$419FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$301Average$416FlexibilityNo cancel feeOn-time63%
DeltaCheapest$315Average$396FlexibilityNo cancel feeOn-timeN/A
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