Cheap Flights from Portsmouth (PSM) to Buffalo (BUF)

Popular airlines from Portsmouth, NH (PSM-Portsmouth Intl.) to Buffalo Niagara Intl. Airport (BUF)

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Flights from Portsmouth (PSM) to Buffalo (BUF)
Origin airport
Portsmouth Intl.
Destination airport
Buffalo Niagara Intl.
Distance
399 mi

Portsmouth to Buffalo Flights

The cheapest times to fly from Portsmouth to Buffalo

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

 

The best time to book a flight from Portsmouth to Buffalo

Sunday is one of the best days to book for cheap flights from Portsmouth to Buffalo: 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 Portsmouth to Buffalo

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 Portsmouth to Buffalo in 2026. 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 Portsmouth to Buffalo 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 Portsmouth to Buffalo 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 Portsmouth Intl. Airport (PSM) to Buffalo Niagara Intl. Airport (BUF) cost?
Grab a cheap one-way flight or cheap return flight from Portsmouth Intl. Airport (PSM) to Buffalo Niagara Intl. Airport (BUF) 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 Portsmouth Intl. Airport (PSM) to Buffalo Niagara Intl. Airport (BUF)?
Planning your trip for is a great way to save, as it's the cheapest month for flights between PSM and BUF. You'll usually find the lowest prices during the off-season.
Which airlines fly direct from Portsmouth Intl. Airport (PSM) to Buffalo Niagara Intl. Airport (BUF)?
Although Portsmouth, NH (PSM-Portsmouth Intl.) has no direct flights to Buffalo Niagara Intl. Airport (BUF), other airports have nonstop options. Departing from Logan Intl. Airport (BOS) will get you to Buffalo without any detours.
What is the cheapest airline that flies from Portsmouth Intl. Airport (PSM) to Buffalo Niagara Intl. Airport (BUF)?
Use the filters on Expedia to compare airlines and find the most affordable carrier that'll take you from PSM to BUF. Then, sort your results by "Price (lowest to highest)" to snag the best deal available.
How many flights per day from Portsmouth Intl. Airport (PSM) to Buffalo Niagara Intl. Airport (BUF)?
Nonstop flights from Portsmouth Intl. Airport (PSM) to Buffalo Niagara Intl. Airport (BUF) aren't available daily, so you'll have to take a flight with a layover. Explore your options with Expedia's filters. Enter your dates and select either "1 Stop" or "2+ Stops."
What day of the week has the most flights from PSM to BUF?
Friday is typically the busiest day for flights, while Tuesday is often the quietest.* Keep in mind that flight schedules can change based on various factors, such as the airline and season.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Portsmouth Intl. Airport (PSM) to Buffalo Niagara Intl. Airport (BUF)?
Book a flight from Portsmouth Intl. Airport (PSM) to Buffalo Niagara Intl. Airport (BUF) that takes off before 3 PM to reduce the risk of delays and cancellations. Later departures are on average 22% more likely to be 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.
Is it cheaper to buy a plane ticket from Portsmouth Intl. Airport (PSM) to Buffalo Niagara Intl. Airport (BUF) last-minute?
Last-minute bookings from PSM to BUF are usually more expensive. To secure the best rates, start looking for flights as early as possible. That being said, if you can play around with your travel dates, it's possible to land a cheap fare right before your journey.
Is it cheaper to book a PSM to BUF flight and hotel package?
You'll generally save money by securing a PSM to BUF flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's easy to manage everything in one place. Once you've chosen your preferred flights and accommodations, consider adding extras like car rentals, tours and activities.
Can I cancel or change the date of my flight from Portsmouth Intl. Airport (PSM) to Buffalo Niagara Intl. Airport (BUF)?
You can usually cancel or reschedule your PSM to BUF flight. However, for bookings made more than 24 hours ago, additional charges may apply. Check your airline's policies in your itinerary to see what changes are possible and if any costs are involved. You'll also find further details on our Customer Service portal.

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