Cheap Flights from Portsmouth (PSM) to Belfast (BFS)

Popular airlines from Portsmouth, NH (PSM-Portsmouth Intl.) to Belfast

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Frequently asked questions

How much does a flight from Portsmouth Intl. Airport (PSM) to Belfast Intl. Airport (BFS) cost?
Get a cheap one-way flight or cheap return flight from Portsmouth Intl. Airport (PSM) to Belfast Intl. Airport (BFS) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Portsmouth Intl. Airport (PSM) to Belfast Intl. Airport (BFS)?
is the least expensive month to fly from PSM to BFS. Avoiding peak travel times is often the key to better flight prices.
What is the cheapest airline that flies from Portsmouth Intl. Airport (PSM) to Belfast Intl. Airport (BFS)?
Use the filters on Expedia to compare different airlines and find the most affordable carrier that'll fly you from PSM to BFS. Then, sort your results by "Price (lowest to highest)" to snag a great deal.
How many flights per day from Portsmouth Intl. Airport (PSM) to Belfast Intl. Airport (BFS)?
There are no daily nonstop flights from Portsmouth Intl. Airport (PSM) to Belfast Intl. Airport (BFS). But you can choose flights with layovers. Filter your search results on Expedia to include one or more stops, and you'll be soaring above the clouds in no time at all.
What day of the week has the most flights from PSM to BFS?
You'll typically find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can vary 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 Portsmouth Intl. Airport (PSM) to Belfast Intl. Airport (BFS)?
Select a flight from Portsmouth Intl. Airport (PSM) to Belfast Intl. Airport (BFS) that takes off before 3 PM to reduce the likelihood of delays. 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 Belfast Intl. Airport (BFS) last-minute?
Holding off until just before your trip to book a ticket from PSM to BFS generally means paying more. While you may find some last-minute deals, they aren't always guaranteed. Be flexible with your itinerary to maximize your chances of snagging a bargain.
Is it cheaper to book a PSM to BFS flight and hotel package?
Securing a PSM to BFS flight and hotel package is generally cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your travels in one place. Pick from our extensive range of accommodations and then add flights, car rentals and activities to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Portsmouth Intl. Airport (PSM) to Belfast Intl. Airport (BFS)?
Typically, you can modify or cancel your PSM to BFS flight. However, there may be additional fees, especially if your booking was made over 24 hours ago. Double-check your itinerary for the airline's rules and fees on flight changes, or if you want further details, visit our Customer Service portal.

Travel information

Origin airport
Portsmouth Intl.
Destination airport
Belfast Intl.
Distance
2929 mi

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Portsmouth to Belfast Flights

The cheapest times to fly from Portsmouth to Belfast

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

 

The best time to book a flight from Portsmouth to Belfast

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

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 Belfast 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 Belfast 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 Belfast 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.

 

Portsmouth to Belfast Flights

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*Available to One Key members.