Cheap Flights from New York (LGA) to Portsmouth (PSM)

Popular airlines from LaGuardia Airport (LGA) to Portsmouth, NH (PSM-Portsmouth Intl.)

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Flights from New York (LGA) to Portsmouth (PSM)
Origin airport
LaGuardia
Destination airport
Portsmouth Intl.
Distance
223 mi

New York to Portsmouth Flights

The cheapest times to fly from New York 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 New York to Portsmouth are during the month of . You can find some of the cheapest flights from New York to Portsmouth with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from New York to Portsmouth

Sunday is one of the best days to book for cheap flights from New York 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 New York 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 New York 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 New York 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 New York 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

Is it cheaper to buy a plane ticket from LaGuardia Airport to PSM last minute?
When it comes to booking your flights, it pays to be prepared. While you may be able to score a deal on a LGA to Portsmouth Intl. Airport at Pease flight at the last minute, tickets usually don’t get cheaper as the departure date nears. Based on flight pricing and demand studies in 2022, we have found that the sweet spot to lock in a domestic flight is between 28 – 35 days in advance. For international flights it’s three to four months.
What airports do you fly into for Portsmouth from New York?
With Portsmouth Intl. Airport (PSM), Manchester-Boston Regional Airport (MHT) and Portland Intl. Jetport Airport (PWM) to choose from, making your way from New York to Portsmouth is a piece of cake. The city’s main gateway, Portsmouth Intl. Airport (PSM), is around 3 mi west of the downtown area. Apart from the price of fares, consider things like transportation options from the airport and the distance to your hotel when deciding where to land. Get your Portsmouth trip off on the right foot by visiting Water Country and Kittery Premium Outlets.
Can I change the date of my flight from LaGuardia Airport (LGA) to PSM?
Plans don’t always work out, so Expedia is here to help make amending your journey as easy as possible. First, find your LaGuardia Airport (LGA) to Portsmouth Intl. Airport at Pease itinerary through the Expedia Trips portal and browse the fare rules and conditions to see if you can make changes. If you booked in the last 24 hours, some carriers allow you to cancel at no cost and organize new flights. If you bought your ticket more than 24 hours ago, get in touch with us via our Customer Service portal so we can help you further.

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