Cheap flights from St. Petersburg to Portsmouth (PIE to PSM)

Popular airlines from St. Petersburg-Clearwater Intl. Airport (PIE) to Portsmouth, NH (PSM-Portsmouth Intl.)

American Airlines
American Airlines
United
United
Southwest Airlines
Southwest Airlines
Delta
Delta
Frontier Airlines
Frontier Airlines
JetBlue Airways
JetBlue Airways
Alaska Airlines
Alaska Airlines

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Frequently asked questions

Is it cheaper to buy a plane ticket from St. Pete-Clearwater Intl. Airport to Portsmouth Intl. Airport at Pease last minute?

Booking your journey from PIE to Portsmouth Intl. Airport at Pease last minute could save you a nice sum if you luck out and find a real steal. However, airfares generally don’t get cheaper as the date of departure nears. If you hold out, flights could also be booked solid or the best seats taken (we hope you like the middle seat!). If you’d rather err on the side of caution, book well in advance of your departure date. Note that some of the biggest deals can be found up to a year in advance. If your favorite airline hasn’t released tickets yet, check back regularly as offers are updated on Expedia all the time.

What airports do you fly into for Portsmouth from St. Petersburg - Clearwater?

Portsmouth Intl. Airport (PSM), Manchester-Boston Regional Airport (MHT) and Portland Intl. Jetport Airport (PWM) are your options when jetting from St. Petersburg - Clearwater to Portsmouth. About 3 mi west of the heart of Portsmouth, Portsmouth Intl. Airport (PSM) is the city’s principal gateway. Take into account factors such as flight schedules and the distance to your hotel before choosing an airport. Water Country and Kittery Premium Outlets are a couple of terrific attractions to add to your must-see list when you reach your destination.

Can I change the date of my flight from St. Petersburg-Clearwater Intl. Airport (PIE) to Portsmouth Intl. Airport at Pease?

You can quickly and easily make changes to your PIE to Portsmouth Intl. Airport at Pease flight through the Expedia Trips portal. But before you make any adjustments, read the fare conditions in your itinerary to find out what the carrier will let you do and whether fees apply. Some carriers have a change fee per person, in addition to any difference in fares. However, if you booked in the last 24 hours, you may be able to cancel for free and organize new flights. You can also find your way to our Customer Service portal for more information and to chat with our Virtual Agent.

Travel information

Origin airport	St. Petersburg-Clearwater Intl.
Destination airport	Portsmouth Intl.
Distance	1240 mi

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

The best time to book a flight from St. Petersburg to Portsmouth

Sunday is one of the best days to book for cheap flights from St. Petersburg 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 St. Petersburg 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 St. Petersburg 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 St. Petersburg 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 St. Petersburg 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.

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Cheap Flights from St. Petersburg (PIE) to Portsmouth (PSM)

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