Cheap Flights from Helsinki (HEL) to Portsmouth (PSM)

Popular airlines from Helsinki-Vantaa Airport (HEL) to Portsmouth, NH (PSM-Portsmouth Intl.)

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Frequently asked questions

How much does a flight from Vantaa Airport (HEL) to Portsmouth Intl. Airport (PSM) cost?
Lock in a cheap one-way flight or cheap return flight from Vantaa Airport (HEL) 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 Vantaa Airport (HEL) to Portsmouth Intl. Airport (PSM)?
Planning your trip for is a great way to save, as it's the cheapest month for flights between HEL and PSM. You'll typically find the lowest fares during the off-season.
What is the cheapest airline that flies from Vantaa Airport (HEL) to Portsmouth Intl. Airport (PSM)?
To find the cheapest airline flying from HEL to PSM, use Expedia's filter tool. Customize your search based on your travel style, such as preferred carriers and number of stops. You can then sort your results by "Price (lowest to highest)" to see the cheapest flights first.
How many flights per day from Vantaa Airport (HEL) to Portsmouth Intl. Airport (PSM)?
There are no daily nonstop flights departing from Vantaa Airport (HEL) to Portsmouth Intl. Airport (PSM). But you can book flights with layovers. Filter your search on Expedia to include one or two stops, and you'll be soaring above the clouds before you know it.
What day of the week has the most flights from HEL to PSM?
Generally you'll find the largest variety of flight choices on a Friday. Tuesdays tend to be the quietest.* But this can vary depending on the time of year, carrier and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Vantaa Airport (HEL) to Portsmouth Intl. Airport (PSM)?
To touch down at Portsmouth Intl. Airport (PSM) on schedule, select a flight that leaves Vantaa Airport (HEL) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this time.**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 Vantaa Airport (HEL) to Portsmouth Intl. Airport (PSM) last-minute?
Booking your flight from HEL to PSM right before your trip is generally more expensive. However, if you're flexible with your itinerary, you could score a cheap last-minute fare.
Is it cheaper to book a HEL to PSM flight and hotel package?
Securing a HEL to PSM flight and hotel package tends to be cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your travels in one place. Select from our wide range of stays and then add flights, car rentals and activities to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Vantaa Airport (HEL) to Portsmouth Intl. Airport (PSM)?
If you booked your HEL to PSM flight in the last 24 hours, you may be able to cancel or modify it at no cost. Depending on the airline and the type of fare 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, visit our Customer Service portal for further details.

Travel information

Origin airport
Vantaa
Destination airport
Portsmouth Intl.
Distance
3879 mi

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Helsinki to Portsmouth Flights

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

 

The best time to book a flight from Helsinki to Portsmouth

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

 

Helsinki to Portsmouth Flights

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*Available to One Key members.