Distance From Portsmouth International at Pease Airport to Shannon Airport, PSM - SNN Distance

The distance from Portsmouth International at Pease Airport (PSM) to Shannon Airport (SNN) is 2851 miles or 4587 kilometers or 2476 nautical miles.

The distance shown below is direct flight distance between airports. Straight-line distance does not account for the surface between the two points. It is the distance a bird or airplane would travel between the two points when flying above the surface. The straight line distance is the direct route between two points, regardless of whether or not there are roads that connect them.

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How long does it take to travel from Portsmouth ( United States ) to Shannon ( Ireland )?

A one-way nonstop (direct) flight between Portsmouth and Shannon takes around 6 hours 33 minutes.

Estimated flight time from Portsmouth International at Pease Airport, Portsmouth, United States to Shannon Airport, Shannon, Ireland is 6 hours 33 minutes under avarage conditions. Your actual flying time may vary depending on wind direction/speed or weather conditions. This calculation does not include the departure and landing times of the aircraft. In addition, it does not cover the person identity check, ticket check-in and baggage collection times at the airport.

Travel Distance Between the Airports • PSM - SNN

Kilometers		4587 km
Statute Miles		2851 miles
Nautical Miles		2476 nm
Avg. Time of Flight		6 hours 33 minutes

Portsmouth International at Pease Airport to Shannon Airport Flight Route Map - PSM to SNN Flight Path

Location of Portsmouth International at Pease Airport & Shannon Airport is given below.
Click the map to view Portsmouth to Shannon nonstop flight path and travel direction.

Click to see flight route on Google Map between Portsmouth, United States and Shannon, Ireland. .

Nonstop flight route between Portsmouth, United States and Shannon, Ireland.

Time Difference Between the Airports • PSM - SNN

Time difference between Portsmouth (United States) and Shannon (Ireland) is 5 Hours.
Shannon time is 5 Hours ahead of Portsmouth.

Location	Local Time
Portsmouth (United States)	2025-12-15, 22:31:37 EST
Shannon (Ireland)	2025-12-16, 03:31:37 GMT

Why should you arrive 3 hours before international flight? Flyers who are traveling to an international destination should arrive at the airport earlier than domestic flyers. This is because international flights can have additional check-in requirements, like passport verification, that need to be completed before you receive your boarding pass.

Origin

Portsmouth International at Pease Airport (PSM / KPSM) Portsmouth, United States

Destination

Shannon Airport (SNN / EINN) Shannon, Ireland