$222+ Cheap flights from Greenville to Portsmouth, NH (GSP - PSM)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/1. Fares are subject to change and may not be available on all flights or dates of travel.
GSP — PSM
Oct 17 — Oct 241
Round-trip
1 adult, Economy
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Find cheap flights from Greenville to Portsmouth 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.Cheap flight deals from Greenville to Portsmouth
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Best
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Cheapest flights from Greenville to PortsmouthExplore the most affordable flight options available from Greenville to Portsmouth. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 17, 2026.
Explore the most affordable flight options available from Greenville to Portsmouth. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 17, 2026.
This Booking.com deal was found by Cheapflights users on 9/17. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/68:32 pm -
1 stop23h 25m
Sun 11/86:47 pm -
2 stops21h 00m
Deal found 9/17![Breeze Airways logo]()
$609
This FlightHub deal was found by Cheapflights users on 9/17. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/28:32 pm -
1 stop20h 37m
Sun 10/46:47 pm -
2 stops21h 00m
Deal found 9/17![Breeze Airways logo]()
$620
This FlightHub deal was found by Cheapflights users on 9/16. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/98:32 pm -
1 stop20h 37m
Thu 10/156:47 pm -
2 stops21h 00m
Deal found 9/16![Breeze Airways logo]()
$700
This Booking.com deal was found by Cheapflights users on 9/16. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/308:32 pm -
1 stop23h 25m
Sun 11/16:47 pm -
2 stops21h 00m
Deal found 9/16![Breeze Airways logo]()
$719
This Booking.com deal was found by Cheapflights users on 9/14. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/218:32 pm -
1 stop12h 30m
Sat 1/28:37 pm -
1 stop23h 22m
Deal found 9/14![Breeze Airways logo]()
$744
This Booking.com deal was found by Cheapflights users on 9/13. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/138:32 pm -
1 stop23h 25m
Sun 11/156:47 pm -
2 stops21h 00m
Deal found 9/13![Breeze Airways logo]()
$759
This FlightHub deal was found by Cheapflights users on 9/14. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/168:32 pm -
1 stop20h 37m
Sun 10/186:47 pm -
2 stops21h 00m
Deal found 9/14![Breeze Airways logo]()
$760
This Booking.com deal was found by Cheapflights users on 9/17. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/98:32 pm -
1 stop20h 37m
Sun 10/116:47 pm -
2 stops21h 00m
Deal found 9/17![Breeze Airways logo]()
$819
This FlightHub deal was found by Cheapflights users on 9/15. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/238:32 pm -
1 stop20h 19m
Sun 11/296:47 pm -
2 stops21h 00m
Deal found 9/15![Breeze Airways logo]()
$930
Best flights from Greenville to PortsmouthDiscover carefully curated flight deals from Greenville to Portsmouth that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 17, 2026.
Discover carefully curated flight deals from Greenville to Portsmouth that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 17, 2026.
This Booking.com deal was found by Cheapflights users on 9/17. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/68:32 pm -
1 stop23h 25m
Sun 11/86:47 pm -
2 stops21h 00m
Deal found 9/17![Breeze Airways logo]()
$609
This FlightHub deal was found by Cheapflights users on 9/16. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/98:32 pm -
1 stop20h 37m
Thu 10/156:47 pm -
2 stops21h 00m
Deal found 9/16![Breeze Airways logo]()
$700
This Booking.com deal was found by Cheapflights users on 9/17. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/308:32 pm -
1 stop23h 25m
Sun 11/16:47 pm -
2 stops21h 00m
Deal found 9/17![Breeze Airways logo]()
$719
This Booking.com deal was found by Cheapflights users on 9/14. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/218:32 pm -
1 stop12h 30m
Sat 1/28:37 pm -
1 stop23h 22m
Deal found 9/14![Breeze Airways logo]()
$744
This Booking.com deal was found by Cheapflights users on 9/13. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/138:32 pm -
1 stop23h 25m
Sun 11/156:47 pm -
2 stops21h 00m
Deal found 9/13![Breeze Airways logo]()
$759
This FlightHub deal was found by Cheapflights users on 9/14. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/168:32 pm -
1 stop20h 37m
Sun 10/186:47 pm -
2 stops21h 00m
Deal found 9/14![Breeze Airways logo]()
$760
This Booking.com deal was found by Cheapflights users on 9/16. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/98:32 pm -
1 stop20h 37m
Sun 10/116:47 pm -
2 stops21h 00m
Deal found 9/16![Breeze Airways logo]()
$819
This FlightHub deal was found by Cheapflights users on 9/15. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/238:32 pm -
1 stop20h 19m
Sun 11/296:47 pm -
2 stops21h 00m
Deal found 9/15![Breeze Airways logo]()
$930
This Justfly.com deal was found by Cheapflights users on 9/17. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/208:32 pm -
1 stop23h 25m
Sun 11/296:47 pm -
2 stops21h 00m
Deal found 9/17![Breeze Airways logo]()
$1,080
Last-minute flights from Greenville to PortsmouthDiscover last-minute flight deals from Greenville to Portsmouth. Data last updated September 17, 2026 and is based on user searches.
Discover last-minute flight deals from Greenville to Portsmouth. Data last updated September 17, 2026 and is based on user searches.
This FlightHub deal was found by Cheapflights users on 9/17. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/28:32 pm -
1 stop20h 37m
Sun 10/46:47 pm -
2 stops21h 00m
Deal found 9/17![Breeze Airways logo]()
$620
This FlightHub deal was found by Cheapflights users on 9/16. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/98:32 pm -
1 stop20h 37m
Thu 10/156:47 pm -
2 stops21h 00m
Deal found 9/16![Breeze Airways logo]()
$700
This Booking.com deal was found by Cheapflights users on 9/16. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/98:32 pm -
1 stop20h 37m
Sun 10/116:47 pm -
2 stops21h 00m
Deal found 9/16![Breeze Airways logo]()
$819
This FlightHub deal was found by Cheapflights users on 9/14. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/168:32 pm -
1 stop20h 37m
Sun 10/186:47 pm -
2 stops21h 00m
Deal found 9/14![Breeze Airways logo]()
$760
This Booking.com deal was found by Cheapflights users on 9/17. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/308:32 pm -
1 stop23h 25m
Sun 11/16:47 pm -
2 stops21h 00m
Deal found 9/17![Breeze Airways logo]()
$719
One-way flights from Greenville to PortsmouthSearch for one-way flight options from Greenville to Portsmouth. Find affordable one-way fares based on user searches. Data last updated September 17, 2026.
Search for one-way flight options from Greenville to Portsmouth. Find affordable one-way fares based on user searches. Data last updated September 17, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/14. 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 10/18:39 am -
1 stop8h 13m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/14![Allegiant Air logo]()
$222
This Booking.com deal was found by Cheapflights users on 9/13. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/28:32 pm -
1 stop20h 37m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/13![Breeze Airways logo]()
$290
This Kiwi.com deal was found by Cheapflights users on 9/15. 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 10/18:07 pm -
3 stops45h 02m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/15![Multiple Airlines logo]()
$313
This Trip.com deal was found by Cheapflights users on 9/16. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/308:32 pm -
1 stop23h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/16![Breeze Airways logo]()
$318
This Gotogate deal was found by Cheapflights users on 9/16. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/278:32 pm -
1 stop23h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/16![Breeze Airways logo]()
$1,000
Find flight deals from Greenville to Portsmouth
Discover tips and strategies to find the most affordable flight options for your journey from Greenville (GSP) to Portsmouth (PSM). 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 September 17, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $609 (Booking.com) |
One-way from | $222 (Kiwi.com) |
Popular in | January |
Cheapest in | September |
Average price | $332 |
Cheapflights Fare Finder
Customize your flight search to find flights from Greenville to Portsmouth 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 7,457,451 searches. Data last updated September 17, 2026.
Use the filters below to find and compare flights from Greenville to Portsmouth that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
GreenvillePortsmouth
GSP Greenville - PSM Portsmouth Pease Intl
GSPPSM
Greenville
Thu 10/1
8:39 am-4:52 pm
1 stop8h 13m
Portsmouth Pease Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$222
GreenvillePortsmouth
GSP Greenville - PSM Portsmouth Pease Intl
GSPPSM
Greenville
Fri 10/2
8:32 pm-5:09 pm
1 stop20h 37m
Portsmouth Pease Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$290
GreenvillePortsmouth
GSP Greenville - PSM Portsmouth Pease Intl
GSPPSM
Greenville
Thu 10/1
8:07 pm-5:09 pm
3 stops45h 02m
Portsmouth Pease Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$313
GreenvillePortsmouth
GSP Greenville - PSM Portsmouth Pease Intl
GSPPSM
Greenville
Fri 11/6
8:32 pm-7:57 pm
1 stop23h 25m
Portsmouth Pease Intl
Sun 11/8
6:47 pm-3:47 pm
2 stops21h 00m
$609
GreenvillePortsmouth
GSP Greenville - PSM Portsmouth Pease Intl
GSPPSM
Greenville
Fri 10/9
8:32 pm-5:09 pm
1 stop20h 37m
Portsmouth Pease Intl
Thu 10/15
6:47 pm-3:47 pm
2 stops21h 00m
$700
GreenvillePortsmouth
GSP Greenville - PSM Portsmouth Pease Intl
GSPPSM
Greenville
Fri 10/30
8:32 pm-7:57 pm
1 stop23h 25m
Portsmouth Pease Intl
Sun 11/1
6:47 pm-3:47 pm
2 stops21h 00m
$719
GreenvillePortsmouth
GSP Greenville - PSM Portsmouth Pease Intl
GSPPSM
Greenville
Mon 12/21
8:32 pm-9:02 am
1 stop12h 30m
Portsmouth Pease Intl
Sat 1/2
8:37 pm-7:59 pm
1 stop23h 22m
$744
GreenvillePortsmouth
GSP Greenville - PSM Portsmouth Pease Intl
GSPPSM
Greenville
Fri 11/13
8:32 pm-7:57 pm
1 stop23h 25m
Portsmouth Pease Intl
Sun 11/15
6:47 pm-3:47 pm
2 stops21h 00m
$759
GreenvillePortsmouth
GSP Greenville - PSM Portsmouth Pease Intl
GSPPSM
Greenville
Fri 10/16
8:32 pm-5:09 pm
1 stop20h 37m
Portsmouth Pease Intl
Sun 10/18
6:47 pm-3:47 pm
2 stops21h 00m
$760
GreenvillePortsmouth
GSP Greenville - PSM Portsmouth Pease Intl
GSPPSM
Greenville
Fri 10/9
8:32 pm-5:09 pm
1 stop20h 37m
Portsmouth Pease Intl
Sun 10/11
6:47 pm-3:47 pm
2 stops21h 00m
$819
Showing 1-10 of 13 resultsSorted by cheapest first
Compare providers for flights from Greenville to Portsmouth
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 Portsmouth in September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Greenville-Portsmouth, New Hampshire flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Greenville-Portsmouth, New Hampshire flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Greenville-Portsmouth, New Hampshire flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Greenville-Portsmouth, New Hampshire 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-Portsmouth, New Hampshire 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 Portsmouth
Have a flexible travel schedule? Discover the best time to fly to Portsmouth from Greenville with our price prediction graph.
GSP-PSM
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.
Related info for your journey
Find useful and relevant information for your journey from Greenville to Portsmouth. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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