Cheap Flights from Philadelphia (PHL) to Portsmouth (PSM)

Popular airlines from Philadelphia Intl. Airport (PHL) to Portsmouth, NH (PSM-Portsmouth Intl.)

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Flights from Philadelphia (PHL) to Portsmouth (PSM)
Origin airport
Philadelphia Intl.
Destination airport
Portsmouth Intl.
Distance
318 mi

Philadelphia to Portsmouth Flights

The cheapest times to fly from Philadelphia to Portsmouth

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Philadelphia to Portsmouth are during the month of . You can find some of the cheapest flights from Philadelphia to Portsmouth with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Philadelphia to Portsmouth

Sunday is one of the best days to book for cheap flights from Philadelphia to Portsmouth: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Philadelphia to Portsmouth

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Philadelphia to Portsmouth in 2025. You can also book with separate airlines for your outbound and return journeys, from one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Philadelphia to Portsmouth flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Philadelphia to Portsmouth airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Philadelphia Intl. Airport (PHL) to Portsmouth Intl. Airport (PSM) cost?
Lock in a cheap one-way flight or cheap return flight from Philadelphia Intl. Airport (PHL) to Portsmouth Intl. Airport (PSM) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Philadelphia Intl. Airport (PHL) to Portsmouth Intl. Airport (PSM)?
is the least expensive month to fly from PHL to PSM. Traveling outside of peak seasons is often the key to landing a great deal.
What is the cheapest airline that flies from Philadelphia Intl. Airport (PHL) to Portsmouth Intl. Airport (PSM)?
To find the cheapest airline that'll fly you from PHL to PSM, use Expedia's filter tool. Tailor your search based on what matters most to you, such as preferred carriers and number of stops. You can then sort your results by "Price (lowest to highest)" to see the cheapest fares upfront.
How many flights per day from Philadelphia Intl. Airport (PHL) to Portsmouth Intl. Airport (PSM)?
Nonstop flights from Philadelphia Intl. Airport (PHL) to Portsmouth Intl. Airport (PSM) aren't available daily, so you'll need to take a flight with a layover. Explore your options with Expedia's filters. Enter your travel details and pick either "1 Stop" or "2+ Stops."
What day of the week has the most flights from PHL to PSM?
Friday is usually the busiest day for flights, while Tuesday is often the quietest.* Keep in mind that flight schedules can vary depending on a range of factors, including the season and airline.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Philadelphia Intl. Airport (PHL) to Portsmouth Intl. Airport (PSM)?
To avoid possible delays on the Philadelphia Intl. Airport (PHL) to Portsmouth Intl. Airport (PSM) route, fly before 3 PM. Flights after this time have a 22% higher chance of being canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for Portsmouth from Philadelphia Intl. Airport (PHL)?
You can touch down at one of these Portsmouth airports following your direct flight from Philadelphia Intl. Airport (PHL):

  • Logan Intl. Airport (BOS)
  • Manchester-Boston Regional Airport (MHT)
  • Portland Intl. Jetport Airport (PWM)

Is it cheaper to buy a plane ticket from Philadelphia Intl. Airport (PHL) to Portsmouth Intl. Airport (PSM) last-minute?
Booking your ticket from PHL to PSM just before your getaway is usually more expensive. However, if you're flexible with your departure dates and times, you could grab a cheap last-minute fare.
Is it cheaper to book a PHL to PSM flight and hotel package?
Compared with arranging flights and hotels separately, booking a PHL to PSM flight and hotel package with Expedia could result in significant savings. Better yet, managing everything in one place will take the hassle out of travel planning. Simply pick your flights and choose from our wide range of stays, then tailor your trip with other add-ons like activities and car rentals.
Can I cancel or change the date of my flight from Philadelphia Intl. Airport (PHL) to Portsmouth Intl. Airport (PSM)?
If you booked your PHL to PSM flight within the last 24 hours, you may be able to cancel or modify it without fees. Depending on the airline and the type of fare you have, additional charges may apply for changes beyond that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, go to our Customer Service portal for more information.

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