HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Portland

$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 6/14. Fares are subject to change and may not be available on all flights or dates of travel.
GSP — PWM
May 17 — May 241
Sat 5/17
Sat 5/24
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Greenville to Portland with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Greenville to Portland are usually found in September or August, 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 May 12, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

Expedia
3 stars

Round-trip from

$160
(Priceline)

One-way from

$149
(American Airlines)

Popular in

March

Cheapest in

September

Average price

$376
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. 11% potential increase in price ($51 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2025
Search Deals

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 May 12, 2025.

This Priceline deal was found by Cheapflights users on 5/11. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/410:33 amGSP - PWM
1 stop3h 57mBreeze Airways
Thu 9/113:15 pmPWM - GSP
1 stop4h 08mBreeze Airways
Deal found 5/11$160
This Delta deal was found by Cheapflights users on 5/11. 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.
Sat 6/212:59 pmGSP - PWM
1 stop6h 38mDelta
Tue 7/14:55 pmPWM - GSP
1 stop4h 46mDelta
Deal found 5/11$284
This United Airlines deal was found by Cheapflights users on 5/12. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/135:45 pmGSP - PWM
1 stop5h 29mUnited Airlines
Sat 8/167:15 pmPWM - GSP
1 stop4h 35mUnited Airlines
Deal found 5/12$297
This American Airlines deal was found by Cheapflights users on 5/12. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/62:26 pmGSP - PWM
2 stops6h 53mAmerican Airlines
Mon 8/118:00 amPWM - GSP
1 stop4h 30mAmerican Airlines
Deal found 5/12$321
This Southwest deal was found by Cheapflights users on 5/11. 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 9/410:45 amGSP - PWM
2 stops9h 15mSouthwest
Thu 9/115:50 amPWM - GSP
1 stop4h 05mSouthwest
Deal found 5/11$340
This Mytrip deal was found by Cheapflights users on 5/12. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/68:06 pmGSP - PWM
3 stops18h 01mMultiple Airlines
Tue 7/151:50 pmPWM - GSP
2 stops31h 02mMultiple Airlines
Deal found 5/12$687

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 May 12, 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

Thu 9/4

10:33 am-2:30 pm

1 stop3h 57m

Portland

Thu 9/11

3:15 pm-7:23 pm

1 stop4h 08m

$160

GreenvillePortland

GSP - PWM

GSPPWM

Greenville

Sat 6/21

2:59 pm-9:37 pm

1 stop6h 38m

Portland

Tue 7/1

4:55 pm-9:41 pm

1 stop4h 46m

$284

GreenvillePortland

GSP - PWM

GSPPWM

Greenville

Wed 8/13

5:45 pm-11:14 pm

1 stop5h 29m

Portland

Sat 8/16

7:15 pm-11:50 pm

1 stop4h 35m

$297

GreenvillePortland

GSP - PWM

GSPPWM

Greenville

Wed 8/6

2:26 pm-9:19 pm

2 stops6h 53m

Portland

Mon 8/11

8:00 am-12:30 pm

1 stop4h 30m

$321

GreenvillePortland

GSP - PWM

GSPPWM

Greenville

Thu 9/4

10:45 am-8:00 pm

2 stops9h 15m

Portland

Thu 9/11

5:50 am-9:55 am

1 stop4h 05m

$340

GreenvillePortland

GSP - PWM

GSPPWM

Greenville

Sun 7/6

8:06 pm-2:07 pm

3 stops18h 01m

Portland

Tue 7/15

1:50 pm-8:52 pm

2 stops31h 02m

$687

GreenvillePortland

GSP - PWM

GSPPWM

Greenville

Sat 6/14

6:36 pm-11:03 pm

1 stop4h 27m

$149

GreenvillePortland

GSP - PWM

GSPPWM

Greenville

Mon 5/19

7:10 pm-11:20 pm

1 stop4h 10m

$189

GreenvillePortland

GSP - PWM

GSPPWM

Greenville

Mon 5/19

2:50 pm-1:05 pm

3 stops22h 15m

$523

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/12

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 May.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*2 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 Expedia the most. Expedia 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 May 9, 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 May 12, 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 May 12, 2025.
Breeze Airways
8.1
Very good
161 reviews

Boarding

8.3

Overall

8.1

Crew

8.8

Comfort

8.2

Entertainment

6.6

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
161 reviews
Breeze Airways
8.1
Very good
161 reviews

Boarding

8.3

Overall

8.1

Crew

8.8

Comfort

8.2

Entertainment

6.6

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
4,290 reviews
Breeze Airways
8.1
Very good
161 reviews

Boarding

8.3

Overall

8.1

Crew

8.8

Comfort

8.2

Entertainment

6.6

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
161 reviews

Boarding

8.3

Overall

8.1

Crew

8.8

Comfort

8.2

Entertainment

6.6

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
8,724 reviews
Breeze Airways
8.1
Very good
161 reviews

Boarding

8.3

Overall

8.1

Crew

8.8

Comfort

8.2

Entertainment

6.6

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
161 reviews

Boarding

8.3

Overall

8.1

Crew

8.8

Comfort

8.2

Entertainment

6.6

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 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 $160. Additional round-trip tickets that might be worth considering are offered by Delta and United Airlines, with the lowest prices starting at $284 and $297, respectively. You may be able to fly from Greenville to Portland, Maine for 59% 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Greenville to Portland

See prices for flight routes from nearby airports that may be better suited for you.
Charlotte to Boston flights
Charleston to Boston flights
Charlotte to Portland flights
Savannah to Boston flights
Greenville to Boston flights
Myrtle Beach to Boston flights
Columbia to Boston flights
Charlotte to Bangor flights
Columbia to Bangor flights
Savannah to Portland flights
Columbia to Portland flights
Greenville to Bangor flights
Augusta to Portland flights
Augusta to Boston flights
Myrtle Beach to Portland flights
Charleston to Portland flights
Savannah to Bangor flights
Hilton Head Island to Boston flights
Myrtle Beach to Bangor flights
Charleston to Bangor flights
Hilton Head Island to Portland flights
Florence to Boston flights
Charlotte to Bar Harbor flights
Charleston to Bar Harbor flights
Charlotte to Augusta flights
Charlotte to Rockland flights
Florence to Bangor flights
Charlotte to Presque Isle flights

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 May 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Breeze AirwaysCheapest$98Average$235FlexibilityNo cancel feeOn-timeN/A
DeltaCheapest$247Average$341FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$264Average$387FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$296Average$409FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$296Average$436FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.