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Greenville

$168+ 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 6/2. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — GSP
May 28 — Jun 41
Thu 5/28
Thu 6/4
1 adult, Economy
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Cheap 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 April 28, 2026.

This Delta deal was found by Cheapflights users on 4/23. 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.
Sat 5/162:05 pm
PWM
-
GSP
1 stop6h 08m
Delta
Tue 5/193:59 pm
GSP
-
PWM
1 stop7h 19m
Delta
Deal found 4/23$304
This Kiwi.com deal was found by Cheapflights users on 4/26. 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.
Thu 10/223:05 pm
PWM
-
GSP
1 stop4h 14m
Breeze Airways
Sun 10/2510:37 am
GSP
-
PWM
1 stop3h 43m
Breeze Airways
Deal found 4/26$324
This United Airlines deal was found by Cheapflights users on 4/28. 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 5/276:00 am
PWM
-
GSP
1 stop4h 37m
United Airlines
Wed 6/36:30 am
GSP
-
PWM
1 stop6h 55m
United Airlines
Deal found 4/28$335
This Kiwi.com deal was found by Cheapflights users on 4/27. 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.
Mon 6/19:52 am
PWM
-
GSP
1 stop5h 51m
Multiple Airlines
Thu 6/48:19 am
GSP
-
PWM
1 stop24h 53m
Multiple Airlines
Deal found 4/27$338
This American Airlines deal was found by Cheapflights users on 4/23. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/163:40 pm
PWM
-
GSP
2 stops8h 17m
American Airlines
Tue 5/197:48 pm
GSP
-
PWM
1 stop4h 06m
American Airlines
Deal found 4/23$340
This Kiwi.com deal was found by Cheapflights users on 4/26. 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.
Thu 10/223:05 pm
PWM
-
GSP
1 stop4h 14m
Breeze Airways
Mon 10/268:32 pm
GSP
-
PWM
2 stops19h 52m
Breeze Airways
Deal found 4/26$368
This United Airlines deal was found by Cheapflights users on 4/23. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/36:00 am
PWM
-
GSP
1 stop4h 37m
United Airlines
Sat 6/67:08 pm
GSP
-
PWM
1 stop4h 22m
United Airlines
Deal found 4/23$370
This Delta deal was found by Cheapflights users on 4/27. 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 8/256:00 am
PWM
-
GSP
1 stop4h 58m
Delta
Sat 8/296:45 am
GSP
-
PWM
1 stop5h 37m
Delta
Deal found 4/27$371
This United Airlines deal was found by Cheapflights users on 4/25. 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.
Mon 5/255:15 am
PWM
-
GSP
1 stop4h 40m
United Airlines
Mon 6/17:40 pm
GSP
-
PWM
1 stop4h 11m
United Airlines
Deal found 4/25$375
This United Airlines deal was found by Cheapflights users on 4/27. 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 8/256:00 am
PWM
-
GSP
1 stop4h 44m
United Airlines
Sat 8/296:30 am
GSP
-
PWM
2 stops8h 05m
United Airlines
Deal found 4/27$376

Find 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 April 28, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$304
(Delta)

One-way from

$168
(American Airlines)

Popular in

November

Cheapest in

September

Average price

$536
Provider with most accurate pricing for Portland-Greenville flight deals.
Search Deals
Provider most trusted by Cheapflights users for Portland-Greenville flights.
Search Deals
From Portland to Greenville
Search Deals
One-way flight from Portland to Greenville
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($66 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($25 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
Search Deals

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 April 28, 2026.
Use the filters below to find and compare flights from Portland to Greenville that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortlandGreenville

PWM - GSP

PWMGSP

Portland

Sat 5/16

2:05 pm-8:13 pm

1 stop6h 08m

Greenville

Tue 5/19

3:59 pm-11:18 pm

1 stop7h 19m

$304

PortlandGreenville

PWM - GSP

PWMGSP

Portland

Sat 5/16

3:40 pm-11:57 pm

2 stops8h 17m

Greenville

Tue 5/19

6:00 am-2:37 pm

2 stops8h 37m

$384

PortlandGreenville

PWM - GSP

PWMGSP

Portland

Fri 5/8

3:39 pm-11:05 pm

1 stop7h 26m

Greenville

Tue 5/12

6:27 pm-11:29 pm

1 stop5h 02m

$399

PortlandGreenville

PWM - GSP

PWMGSP

Portland

Fri 5/22

5:51 pm-10:24 pm

1 stop4h 33m

Greenville

Mon 5/25

7:08 am-11:55 am

1 stop4h 47m

$401
Quickest round-trip

PortlandGreenville

PWM - GSP

PWMGSP

Portland

Sat 8/15

5:40 am-10:05 am

1 stop4h 25m

Greenville

Sun 8/16

8:40 am-12:45 pm

1 stop4h 05m

$407

PortlandGreenville

PWM - GSP

PWMGSP

Portland

Mon 6/15

5:15 am-9:55 am

1 stop4h 40m

Greenville

Fri 6/19

7:40 pm-11:51 pm

1 stop4h 11m

$407

PortlandGreenville

PWM - GSP

PWMGSP

Portland

Mon 6/1

4:50 pm-8:55 pm

1 stop4h 05m

Greenville

Thu 6/4

12:55 pm-12:05 am

2 stops11h 10m

$412

PortlandGreenville

PWM - GSP

PWMGSP

Portland

Fri 5/22

5:15 am-9:55 am

1 stop4h 40m

Greenville

Fri 5/29

7:40 pm-11:51 pm

1 stop4h 11m

$417
Cheapest one-way
Quickest one-way

PortlandGreenville

PWM - GSP

PWMGSP

Portland

Mon 8/10

9:52 am-3:43 pm

1 stop5h 51m

$168

PortlandGreenville

PWM - GSP

PWMGSP

Portland

Tue 6/30

5:58 pm-11:52 pm

1 stop5h 54m

$168

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/25

Showing 1-10 of 19 resultsSorted by cheapest first
1
2

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 April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice 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

How much does it cost to fly round-trip from Portland, Maine to Greenville?

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 April 28, 2026.
Peruse reviews from past customers who have flown with Delta,United Airlines, andAmerican Airlines from Portland to Greenville to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,467 reviews

Boarding

8.1

Overall

7.9

Entertainment

7.8

Crew

8.5

Food

7.2

Comfort

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,467 reviews
Delta
7.9
Good
8,467 reviews

Boarding

8.1

Overall

7.9

Entertainment

7.8

Crew

8.5

Food

7.2

Comfort

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,672 reviews
Delta
7.9
Good
8,467 reviews

Boarding

8.1

Overall

7.9

Entertainment

7.8

Crew

8.5

Food

7.2

Comfort

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
American Airlines
7.1
Good
11,677 reviews
Delta
7.9
Good
8,467 reviews

Boarding

8.1

Overall

7.9

Entertainment

7.8

Crew

8.5

Food

7.2

Comfort

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

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.

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

    There are many flights that can get you from Portland, Maine to Greenville in 4h 37m. Fly via Delta, United Airlines, or American Airlines to get the fastest option. The distance between Portland, Maine and Greenville is about 876 mi. This flight may include one or multiple stops.

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

    Currently priced at $213, 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 United Airlines - these airlines can fly you to your destination from $258 and $309, respectively. Delta is priced at 50% lower than the current average price of a flight leaving 3 months from now.

  • 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.

See more FAQs

Traveling to a place near Greenville?

Book flights to Greenville if you plan to visit one of these locations
Greer
Simpsonville
Greenwood
Duncan
Seneca

Browse thousands of different options on Cheapflights for your next trip

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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 April 28, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$213Average$417FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$258Average$366FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$309Average$386FlexibilityNo cancel feeOn-time69%

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