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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 3/8. Fares are subject to change and may not be available on all flights or dates of travel.
GSP — PWM
Mar 13 — Mar 201
Fri 3/13
Fri 3/20
1 adult, Economy
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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 February 11, 2026.

This United Airlines deal was found by Cheapflights users on 2/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/116:30 am
GSP
-
PWM
1 stop8h 44m
United Airlines
Wed 3/187:07 pm
PWM
-
GSP
1 stop4h 52m
United Airlines
Deal found 2/9$297
This Breeze Airways deal was found by Cheapflights users on 2/9. 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 Breeze Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/310:35 am
GSP
-
PWM
1 stop3h 51m
Breeze Airways
Mon 9/79:52 am
PWM
-
GSP
1 stop5h 51m
Breeze Airways
Deal found 2/9$316
This Delta deal was found by Cheapflights users on 2/11. 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.
Tue 3/316:21 pm
GSP
-
PWM
1 stop4h 51m
Delta
Tue 4/74:48 pm
PWM
-
GSP
1 stop5h 17m
Delta
Deal found 2/11$317
This Breeze Airways deal was found by Cheapflights users on 2/10. 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 Breeze Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/710:35 am
GSP
-
PWM
1 stop3h 51m
Breeze Airways
Sun 5/103:11 pm
PWM
-
GSP
1 stop4h 00m
Breeze Airways
Deal found 2/10$320
This Delta deal was found by Cheapflights users on 2/11. 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.
Tue 3/315:40 am
GSP
-
PWM
2 stops8h 10m
Delta
Wed 4/85:23 am
PWM
-
GSP
1 stop5h 42m
Delta
Deal found 2/11$322
This Delta deal was found by Cheapflights users on 2/11. 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.
Wed 4/15:40 am
GSP
-
PWM
2 stops6h 29m
Delta
Tue 4/74:48 pm
PWM
-
GSP
2 stops7h 06m
Delta
Deal found 2/11$327
This American Airlines deal was found by Cheapflights users on 2/7. 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.
Fri 5/156:00 am
GSP
-
PWM
1 stop10h 40m
American Airlines
Wed 5/203:39 pm
PWM
-
GSP
1 stop6h 40m
American Airlines
Deal found 2/7$331
This United Airlines deal was found by Cheapflights users on 2/11. 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.
Thu 3/126:15 am
GSP
-
PWM
1 stop4h 34m
United Airlines
Mon 3/167:07 pm
PWM
-
GSP
1 stop4h 52m
United Airlines
Deal found 2/11$341
This American Airlines deal was found by Cheapflights users on 2/9. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/115:00 am
GSP
-
PWM
2 stops7h 14m
American Airlines
Wed 3/186:00 am
PWM
-
GSP
1 stop4h 20m
American Airlines
Deal found 2/9$342
This Southwest deal was found by Cheapflights users on 2/11. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/1212:25 pm
GSP
-
PWM
2 stops11h 40m
Southwest
Mon 3/165:30 pm
PWM
-
GSP
1 stop4h 20m
Southwest
Deal found 2/11$352
This American Airlines deal was found by Cheapflights users on 2/8. 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 5/206:00 am
GSP
-
PWM
1 stop9h 09m
American Airlines
Wed 5/279:59 am
PWM
-
GSP
1 stop12h 39m
American Airlines
Deal found 2/8$355

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 February 11, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$297
(United Airlines)

One-way from

$149
(Delta)

Popular in

March

Cheapest in

January
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. 28% potential increase in price ($161 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($26 potential savings vs. average RT price).
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 February 11, 2026.
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

Wed 3/11

6:30 am-3:14 pm

1 stop8h 44m

Portland

Wed 3/18

7:07 pm-11:59 pm

1 stop4h 52m

$297

GreenvillePortland

GSP - PWM

GSPPWM

Greenville

Tue 3/31

6:21 pm-11:12 pm

1 stop4h 51m

Portland

Wed 4/8

6:03 am-10:59 am

1 stop4h 56m

$317

GreenvillePortland

GSP - PWM

GSPPWM

Greenville

Wed 4/1

6:05 am-11:04 am

1 stop4h 59m

Portland

Tue 4/7

5:23 am-11:05 am

1 stop5h 42m

$317

GreenvillePortland

GSP - PWM

GSPPWM

Greenville

Thu 5/7

10:35 am-2:26 pm

1 stop3h 51m

Portland

Sun 5/10

3:11 pm-7:11 pm

1 stop4h 00m

$320

GreenvillePortland

GSP - PWM

GSPPWM

Greenville

Wed 4/1

5:40 am-12:09 pm

2 stops6h 29m

Portland

Wed 4/8

5:23 am-11:05 am

1 stop5h 42m

$322

GreenvillePortland

GSP - PWM

GSPPWM

Greenville

Fri 5/15

6:00 am-4:40 pm

1 stop10h 40m

Portland

Wed 5/20

3:39 pm-10:19 pm

1 stop6h 40m

$331

GreenvillePortland

GSP - PWM

GSPPWM

Greenville

Wed 3/11

5:00 am-12:14 pm

2 stops7h 14m

Portland

Wed 3/18

6:00 am-10:20 am

1 stop4h 20m

$342

GreenvillePortland

GSP - PWM

GSPPWM

Greenville

Sat 5/16

7:35 pm-11:59 pm

1 stop4h 24m

Portland

Thu 5/21

5:20 am-9:55 am

1 stop4h 35m

$342

GreenvillePortland

GSP - PWM

GSPPWM

Greenville

Thu 3/12

12:25 pm-12:05 am

2 stops11h 40m

Portland

Mon 3/16

5:30 pm-9:50 pm

1 stop4h 20m

$352

GreenvillePortland

GSP - PWM

GSPPWM

Greenville

Wed 5/20

6:00 am-3:09 pm

1 stop9h 09m

Portland

Tue 5/26

1:31 pm-10:38 pm

1 stop9h 07m

$355

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/8

Showing 1-10 of 23 results
1
2
3

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 February.
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 Greenville-Portland, Maine flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Greenville-Portland, Maine flight deals on Cheapflights vs. FlightHub >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 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 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 February 6, 2026.

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 January is currently the most expensive (average of $145). 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.

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 February 11, 2026.
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
8.1
Very good
268 reviews

Crew

8.7

Boarding

8.3

Overall

8.1

Comfort

8.2

Food

6.7

Entertainment

6.6

Reviews

1 / 17
2.0
Mediocre

Justine,Jan 2026

RDU - MCO

1/10, I have never experienced the amount of delays, my flight was supposed to board at 8:34pm, we didn’t board until 3:35am from RDU. The staff got rude and very disrespectful when you asked what was going on it was like we didn’t board until something wrong or were pestering them for answers. I was 1 question 1 time, they were not communicating with us at all. So when our plane was now 6+ hrs delayed and nothing was being said to us .. yeah I think we have a right to ask a question. Everything took so long and was such a process; I have never experienced this before and I’m a frequent flyer, breeze makes spirit airlines look like a 100/10 airline.
Breeze Airways
8.1
Very good
268 reviews
Breeze Airways
8.1
Very good
268 reviews

Crew

8.7

Boarding

8.3

Overall

8.1

Comfort

8.2

Food

6.7

Entertainment

6.6

Reviews

1 / 17
2.0
Mediocre

Justine,Jan 2026

RDU - MCO

1/10, I have never experienced the amount of delays, my flight was supposed to board at 8:34pm, we didn’t board until 3:35am from RDU. The staff got rude and very disrespectful when you asked what was going on it was like we didn’t board until something wrong or were pestering them for answers. I was 1 question 1 time, they were not communicating with us at all. So when our plane was now 6+ hrs delayed and nothing was being said to us .. yeah I think we have a right to ask a question. Everything took so long and was such a process; I have never experienced this before and I’m a frequent flyer, breeze makes spirit airlines look like a 100/10 airline.
Southwest
8.0
Very good
4,280 reviews
Breeze Airways
8.1
Very good
268 reviews

Crew

8.7

Boarding

8.3

Overall

8.1

Comfort

8.2

Food

6.7

Entertainment

6.6

Reviews

1 / 17
2.0
Mediocre

Justine,Jan 2026

RDU - MCO

1/10, I have never experienced the amount of delays, my flight was supposed to board at 8:34pm, we didn’t board until 3:35am from RDU. The staff got rude and very disrespectful when you asked what was going on it was like we didn’t board until something wrong or were pestering them for answers. I was 1 question 1 time, they were not communicating with us at all. So when our plane was now 6+ hrs delayed and nothing was being said to us .. yeah I think we have a right to ask a question. Everything took so long and was such a process; I have never experienced this before and I’m a frequent flyer, breeze makes spirit airlines look like a 100/10 airline.
Delta
7.9
Good
8,180 reviews
Breeze Airways
8.1
Very good
268 reviews

Crew

8.7

Boarding

8.3

Overall

8.1

Comfort

8.2

Food

6.7

Entertainment

6.6

Reviews

1 / 17
2.0
Mediocre

Justine,Jan 2026

RDU - MCO

1/10, I have never experienced the amount of delays, my flight was supposed to board at 8:34pm, we didn’t board until 3:35am from RDU. The staff got rude and very disrespectful when you asked what was going on it was like we didn’t board until something wrong or were pestering them for answers. I was 1 question 1 time, they were not communicating with us at all. So when our plane was now 6+ hrs delayed and nothing was being said to us .. yeah I think we have a right to ask a question. Everything took so long and was such a process; I have never experienced this before and I’m a frequent flyer, breeze makes spirit airlines look like a 100/10 airline.
United Airlines
7.4
Good
9,273 reviews
Breeze Airways
8.1
Very good
268 reviews

Crew

8.7

Boarding

8.3

Overall

8.1

Comfort

8.2

Food

6.7

Entertainment

6.6

Reviews

1 / 17
2.0
Mediocre

Justine,Jan 2026

RDU - MCO

1/10, I have never experienced the amount of delays, my flight was supposed to board at 8:34pm, we didn’t board until 3:35am from RDU. The staff got rude and very disrespectful when you asked what was going on it was like we didn’t board until something wrong or were pestering them for answers. I was 1 question 1 time, they were not communicating with us at all. So when our plane was now 6+ hrs delayed and nothing was being said to us .. yeah I think we have a right to ask a question. Everything took so long and was such a process; I have never experienced this before and I’m a frequent flyer, breeze makes spirit airlines look like a 100/10 airline.
American Airlines
7.2
Good
11,265 reviews
Breeze Airways
8.1
Very good
268 reviews

Crew

8.7

Boarding

8.3

Overall

8.1

Comfort

8.2

Food

6.7

Entertainment

6.6

Reviews

1 / 17
2.0
Mediocre

Justine,Jan 2026

RDU - MCO

1/10, I have never experienced the amount of delays, my flight was supposed to board at 8:34pm, we didn’t board until 3:35am from RDU. The staff got rude and very disrespectful when you asked what was going on it was like we didn’t board until something wrong or were pestering them for answers. I was 1 question 1 time, they were not communicating with us at all. So when our plane was now 6+ hrs delayed and nothing was being said to us .. yeah I think we have a right to ask a question. Everything took so long and was such a process; I have never experienced this before and I’m a frequent flyer, breeze makes spirit airlines look like a 100/10 airline.

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 $320, United Airlines can have you in Portland, Maine from Greenville in 3h 51m. Airlines will cover a distance of 876 mi. This flight may include one or multiple stops.

  • 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 $262, 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 January is currently the most expensive (average of $145). 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

Browse thousands of different options on Cheapflights for your next trip

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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 February 11, 2026.
AirlineCheapestAverageFlexibilityOn-time
Breeze AirwaysCheapest$98Average$230FlexibilityNo cancel feeOn-timeN/A
DeltaCheapest$183Average$388FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$262Average$371FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$279Average$470FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$280Average$476FlexibilityNo cancel feeOn-time69%

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