Is the flight to Ireland turbulent?
It is usually light to moderate. The crossing from the Northeast is short and often smooth, but Ireland sits on the North Atlantic storm track, so approaches into Dublin can be gusty and the northern edge of the jet stream can add clear-air turbulence at cruise, especially in winter.
When is the smoothest time to fly to Ireland?
Late spring to early autumn (May–September) has the weakest jet stream and the fewest Atlantic storm systems. Winter brings a stronger jet and low-pressure systems that make both the crossing and the Dublin approach bumpier.
Why is there turbulence over the Atlantic?
The North Atlantic jet stream — a fast river of air at cruise altitude — creates wind shear at its edges that can jolt an aircraft without warning (clear-air turbulence, or CAT). It is strongest in winter and on the eastbound US→Europe leg, which rides the jet. Pilots change altitude to find smoother air, but CAT is invisible on radar, so it is the main reason to keep your belt on.
Where should I sit on a flight to Ireland?
Over the wing, near the aircraft's center of gravity, gives the steadiest ride. Keep your seatbelt fastened even when the sign is off — clear-air turbulence over the Atlantic can appear suddenly. Overnight eastbound flights often cross the jet stream while you are sleeping, so belt over the blanket.