$543+ Cheap flights from Philadelphia to Portsmouth, NH (PHL - 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 11/18. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — PSM
Nov 23 — Nov 301
Round-trip
1 adult, Economy
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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 Philadelphia to Portsmouth
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Cheapest flights from Philadelphia to PortsmouthExplore the most affordable flight options available from Philadelphia to Portsmouth. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 24, 2026.
Explore the most affordable flight options available from Philadelphia to Portsmouth. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 24, 2026.
This Kiwi.com deal was found by Cheapflights users on 10/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/188:20 pm -
2 stops21h 47m
Sat 11/218:37 pm -
1 stop11h 25m
Deal found 10/22![Multiple Airlines logo]()
$543
This Kiwi.com deal was found by Cheapflights users on 10/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/215:01 am -
1 stop14h 56m
Sat 11/2810:37 am -
2 stops29h 05m
Deal found 10/22![Multiple Airlines logo]()
$808
Best flights from Philadelphia to PortsmouthDiscover carefully curated flight deals from Philadelphia to Portsmouth that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 24, 2026.
Discover carefully curated flight deals from Philadelphia to Portsmouth that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 24, 2026.
This Kiwi.com deal was found by Cheapflights users on 10/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/188:20 pm -
2 stops21h 47m
Sat 11/218:37 pm -
1 stop11h 25m
Deal found 10/22![Multiple Airlines logo]()
$543
Last-minute flights from Philadelphia to PortsmouthDiscover last-minute flight deals from Philadelphia to Portsmouth. Data last updated October 24, 2026 and is based on user searches.
Discover last-minute flight deals from Philadelphia to Portsmouth. Data last updated October 24, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 10/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/188:20 pm -
2 stops21h 47m
Sat 11/218:37 pm -
1 stop11h 25m
Deal found 10/22![Multiple Airlines logo]()
$543
This Kiwi.com deal was found by Cheapflights users on 10/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/215:01 am -
1 stop14h 56m
Sat 11/2810:37 am -
2 stops29h 05m
Deal found 10/22![Multiple Airlines logo]()
$808
Find flight deals from Philadelphia to Portsmouth
Discover tips and strategies to find the most affordable flight options for your journey from Philadelphia (PHL) 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 October 24, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $543 (Kiwi.com) |
Popular in | October |
Cheapest in | January |
Average price | $306 |
Cheapflights Fare Finder
Customize your flight search to find flights from Philadelphia 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 October 24, 2026.
Use the filters below to find and compare flights from Philadelphia to Portsmouth that are best for you.
Fly from
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Route
Depart
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Cheapest round-trip
Quickest round-trip
PhiladelphiaPortsmouth
PHL Philadelphia - PSM Portsmouth Pease Intl
PHLPSM
Philadelphia
Wed 11/18
8:20 pm-6:07 pm
2 stops21h 47m
Portsmouth Pease Intl
Sat 11/21
8:37 pm-8:02 am
1 stop11h 25m
$543
Sorted by cheapest first
Compare providers for flights from Philadelphia 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 Philadelphia to Portsmouth in October.
| 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 Philadelphia-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 Philadelphia-Portsmouth, New Hampshire flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Philadelphia-Portsmouth, New Hampshire flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Philadelphia-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 Philadelphia-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 Philadelphia to Portsmouth
Have a flexible travel schedule? Discover the best time to fly to Portsmouth from Philadelphia with our price prediction graph.
PHL-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
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