Cheap Flights from Niagara Falls (IAG) to Portsmouth (PSM)

Popular airlines from Niagara Falls, NY (IAG-Niagara Falls Intl.) to Portsmouth, NH (PSM-Portsmouth Intl.)

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Frequently asked questions

How much does a flight from Niagara Falls Intl. Airport (IAG) to Portsmouth Intl. Airport (PSM) cost?
Snag a cheap one-way flight or cheap return flight from Niagara Falls Intl. Airport (IAG) to Portsmouth Intl. Airport (PSM) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Niagara Falls Intl. Airport (IAG) to Portsmouth Intl. Airport (PSM)?
is the cheapest month to fly from IAG to PSM. Planning your trip for the off-season is often the key to landing a great deal.
What is the cheapest airline that flies from Niagara Falls Intl. Airport (IAG) to Portsmouth Intl. Airport (PSM)?
Use the filter tool on Expedia to compare airlines and find the most affordable carrier that'll fly you from IAG to PSM. Then, sort your results by "Price (lowest to highest)" to pick up a great deal.
How many flights per day from Niagara Falls Intl. Airport (IAG) to Portsmouth Intl. Airport (PSM)?
You'll have to take a flight with a layover when traveling from Niagara Falls Intl. Airport (IAG) to Portsmouth Intl. Airport (PSM). There are no daily direct flights on this route. However, simply filter your search to include one or two stops to discover the best option for your trip.
What day of the week has the most flights from IAG to PSM?
You'll generally find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can change from season to season and during public holidays or peak travel times.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Niagara Falls Intl. Airport (IAG) to Portsmouth Intl. Airport (PSM)?
To avoid potential delays on the Niagara Falls Intl. Airport (IAG) to Portsmouth Intl. Airport (PSM) route, travel before 3 PM. Later departures 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.
Is it cheaper to buy a plane ticket from Niagara Falls Intl. Airport (IAG) to Portsmouth Intl. Airport (PSM) last-minute?
Last-minute fares from IAG to PSM are typically more expensive. To secure the lowest prices, start searching for flights well in advance. That said, if your travel plans are flexible, you may score a cheap fare right before you leave.
Is it cheaper to book an IAG to PSM flight and hotel package?
Compared with arranging flights and hotels separately, booking an IAG to PSM flight and hotel package with Expedia could lead to significant savings. Better still, managing everything in one place will take the stress out of travel planning. Simply secure your flights and choose from our extensive range of hotels, then customize your trip with extras like activities, tours and car rentals.
Can I cancel or change the date of my flight from Niagara Falls Intl. Airport (IAG) to Portsmouth Intl. Airport (PSM)?
If you reserved your IAG to PSM flight in the last 24 hours, you may be able to modify or cancel it without fees. Depending on the airline and the fare type you purchased, additional charges may apply for changes after that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, go to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Niagara Falls Intl.
Destination airport
Portsmouth Intl.
Distance
409 mi

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Niagara Falls to Portsmouth Flights

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

 

The best time to book a flight from Niagara Falls to Portsmouth

Sunday is one of the best days to book for cheap flights from Niagara Falls 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 Niagara Falls 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 Niagara Falls to Portsmouth 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 Niagara Falls 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 Niagara Falls 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.

 

Niagara Falls to Portsmouth Flights

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