Portsmouth International Airport at Pease
Portsmouth, United StatesPSM / KPSM
Regional airport · 16 direct destinations · 1 runway · longest runway 11,322 ft
61 °F · CloudySource: METAR observation via the NOAA Aviation Weather Center
Route
Portsmouth → Shannon
PSM
PortsmouthPortsmouth International Airport at Pease
PortsmouthPortsmouth International Airport at PeaseSNN
ShannonShannon Airport
ShannonShannon Airport- Distance
- 2,850 mi
- Estimated flight time
- ~6h 15m
Shannon is currently 5 hours ahead of Portsmouth.
No nonstop connection observed
Our route data contains no observed nonstop flight from Portsmouth to Shannon. That does not rule out a one-stop journey; see the direct destinations of Portsmouth for the options.
About this route
- Intercontinental: this route connects two continents.
- Direct destinations observed from Portsmouth: 16.
- Direct destinations observed from Shannon: 57.
The airports on this route
Shannon Airport
Shannon, IrelandSNN / EINN
Regional airport · 57 direct destinations · 1 runway · longest runway 10,495 ft
48 °F · ClearSource: METAR observation via the NOAA Aviation Weather Center
Alternative airports for this journey
Same journey, a different airport nearby - with an observed direct connection.
About the route from Portsmouth to Shannon
The distance between Portsmouth International Airport at Pease (PSM) and Shannon Airport (SNN) is approximately 2,850 mi; no direct connection has been observed in our route data.
Frequently asked questions about this route
- How far is Portsmouth from Shannon by air?
- The great-circle distance between Portsmouth International Airport at Pease and Shannon Airport is approximately 2,850 mi.
- Is there a direct connection from Portsmouth to Shannon?
- No direct connection between PSM and SNN has been observed in our route data. That does not rule out a one-stop journey.
- What is the current time difference between Portsmouth and Shannon?
- Shannon is currently 5 hours ahead of Portsmouth.
Where this data comes from
The route data comes from the flight archive (ADS-B, adsb.lol): which connections actually flew over the last twelve full months and who flew them, combined with our own airport, runway, and airline datasets. It is reference data about observed routes - not a current timetable and no claim about bookability.
The flight archive of the last twelve months has nothing for this route, so we say nothing about frequency.
Route data updated on October 11, 2026.