Cheap Flights from Portsmouth (PSM) to Saint John (YSJ)

Popular airlines from Portsmouth, NH (PSM-Portsmouth Intl.) to Saint John, NB (YSJ)

Frequently asked questions

How much does a flight from Portsmouth Intl. Airport (PSM) to Saint John Airport (YSJ) cost?
Get a cheap one-way flight or cheap return flight from Portsmouth Intl. Airport (PSM) to Saint John Airport (YSJ) 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 Saint John Airport (YSJ)?
Planning your getaway for is a good way to save, as it's the cheapest month for flights between PSM and YSJ. You'll typically find the lowest fares during off-peak months.
What is the cheapest airline that flies from Portsmouth Intl. Airport (PSM) to Saint John Airport (YSJ)?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from PSM to YSJ. 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 Saint John Airport (YSJ)?
You'll need to catch a flight with a layover when traveling from Portsmouth Intl. Airport (PSM) to Saint John Airport (YSJ). Direct flights don't operate daily on this route. However, just filter your search to include one or two stops to find the best option for your trip.
What day of the week has the most flights from PSM to YSJ?
You'll typically 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 Portsmouth Intl. Airport (PSM) to Saint John Airport (YSJ)?
Book a flight from Portsmouth Intl. Airport (PSM) to Saint John Airport (YSJ) that leaves before 3 PM to reduce the risk of cancellations and delays. Departures after this hour have a 22% higher chance of being canceled, on average.**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 Saint John Airport (YSJ) last-minute?
Waiting until just before your trip to book a flight from PSM to YSJ often results in higher prices. While you may come across some last-minute discounts, they're not always guaranteed. Keep your travel plans flexible to boost your chances of landing a bargain.
Is it cheaper to book a PSM to YSJ flight and hotel package?
Booking a PSM to YSJ flight and hotel package is generally cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your trip in one place. Select from our wide range of stays and then add flights, activities and car rentals 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 Saint John Airport (YSJ)?
Generally, it's possible to reschedule or cancel your PSM to YSJ flight. However, for bookings made more than 24 hours ago, additional fees may apply. Check your airline's policies in your itinerary to see what changes are possible and whether any costs are involved. You'll also find further details on our Customer Service portal.

Travel information

Travel information

Origin airport
Portsmouth Intl.
Destination airport
Saint John
Distance
289 mi

Book with confidence

Book with confidence

Portsmouth to Saint John Flights

The cheapest times to fly from Portsmouth to Saint John

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

 

The best time to book a flight from Portsmouth to Saint John

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

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 Saint John 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 Portsmouth to Saint John 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 Saint John 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 Saint John Flights

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*Available to One Key members.