Shannon Airport
Shannon, IrelandSNN / EINN
Regional airport · 57 direct destinations · 1 runway · longest runway 10,495 ft
46 °F · ClearSource: METAR observation via the NOAA Aviation Weather Center
Route
Shannon → Portsmouth
SNN
ShannonShannon Airport
ShannonShannon AirportPSM
PortsmouthPortsmouth International Airport at Pease
PortsmouthPortsmouth International Airport at Pease- Distance
- 2,850 mi
- Estimated flight time
- ~6h 15m
Portsmouth is currently 5 hours behind Shannon.
Observed nonstop
How often does this route fly?
Frequency
Daily at most
On average around 1 flights a day, observed from October 2025 to September 2026.
- 1
- flights per day
- 1.5
- busiest month · Nov
- 1
- quietest month · Oct
- 6 hr 24 min
- measured flight time
- 3 / 12
- months seen
Through the year
Per day, month by month
- –Jan2026
- –Feb
- 1Mar
- –Apr
- –May
- –Jun
- –Jul
- –Aug
- –Sep
- 1Oct2025
- 1.5Nov
- –Dec
In January 2026 we saw less traffic at Shannon in general than usual; compare that month with care.
Airlines
Who flies it
United States Navynow and then
Through the day
Departure times
Local time in Shannon. Most departures between 07:00 and 10:00.
- 00:00
- 01:00
- 02:00
- 03:00
- 04:00
- 05:00
- 06:00
- 07:00
- 08:00
- 09:00
- 10:00
- 11:00
- 12:00
- 13:00
- 14:00
- 15:00
- 16:00
- 17:00
- 18:00
- 19:00
- 20:00
- 21:00
- 22:00
- 23:00
Through the week
By weekday
- 0Mon
- 0Tue
- 0Wed
- 0Thu
- 0Fri
- 0Sat
- 0Sun
Fleet
Aircraft observed
- Boeing 737-700B73786%
All the numbers in a table
| Month | Per day | Seen | Airlines |
|---|---|---|---|
| January 2026 | Not seen in this month. | ||
| February 2026 | Not seen in this month. | ||
| March 2026 | 1 | 2 |
|
| April 2026 | Not seen in this month. | ||
| May 2026 | Not seen in this month. | ||
| June 2026 | Not seen in this month. | ||
| July 2026 | Not seen in this month. | ||
| August 2026 | Not seen in this month. | ||
| September 2026 | Not seen in this month. | ||
| October 2025 | 1 | 2 |
|
| November 2025 | 1.5 | 3 |
|
| December 2025 | Not seen in this month. | ||
Airlines observed on this route
From observed callsign routes on SNN-PSM - not a booking guarantee.
About this route
- Intercontinental: this route connects two continents.
- The 10th longest observed direct route from SNN, out of 57.
- Direct destinations observed from Shannon: 57.
- Direct destinations observed from Portsmouth: 16.
The airports on this route
Portsmouth International Airport at Pease
Portsmouth, United StatesPSM / KPSM
Regional airport · 16 direct destinations · 1 runway · longest runway 11,322 ft
63 °F · CloudySource: 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 Shannon to Portsmouth
The observed direct connection between Shannon Airport (SNN) and Portsmouth International Airport at Pease (PSM) covers approximately 2,850 mi. The estimated flight time is around 6h 15m. United States Navy has been observed on this connection in the available route data.
Frequently asked questions about this route
- How far is Shannon from Portsmouth by air?
- The great-circle distance between Shannon Airport and Portsmouth International Airport at Pease is approximately 2,850 mi.
- How long is the flight from Shannon to Portsmouth?
- Based on the distance, the estimated flight time is about 6h 15m. This is an estimate, not a schedule.
- Is there a direct connection from Shannon to Portsmouth?
- Yes, a direct connection between SNN and PSM has been observed in our route data.
- Which airlines have been observed on this route?
- In the available route data: United States Navy.
- How often is there a flight from Shannon to Portsmouth?
- On average around 1 flights a day, measured over twelve months (October 2025 to September 2026) in the flight archive, with 7 observed flights. Mainly United States Navy. That is an observation, not a timetable.
- What is the current time difference between Shannon and Portsmouth?
- Portsmouth is currently 5 hours behind Shannon.
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 frequency and aircraft on this page come from the flight archive (ADS-B, 12 months, October 2025 to September 2026), summarized per route per month. We do not see every flight, so it is a floor, not a count.
Route data updated on October 11, 2026.