Sit on the Left side of the plane for the best views on flights from London to Dublin. The left side wins overall. The London departure views are genuinely spectacular and hard to beat — the Thames, the skyline, Windsor — and mid-flight the left side also tracks closer to the Welsh coast and the Irish Sea crossing. Dublin arrival on runway 28 slightly favours the right, but the takeoff experience on the left is the highlight of this short flight.

During takeoff from Heathrow (LHR), sit on the Left side for the best views. Heathrow typically departs westbound on runways 27L/27R, then aircraft turn northwest toward Wales. The left side picks up central London, the Thames, and the city skyline as you bank away. Right side faces south toward Surrey suburbs with little of interest. Notable sights include: Thames River snaking east toward central London, Wembley Stadium arch visible to the north, Windsor Castle and Windsor Great Park to the southwest, the Shard and Canary Wharf towers on the distant eastern horizon.

When landing at Dublin (DUB), sit on the Right side for the best views. Dublin typically lands on runway 28, approaching from the east over Dublin Bay. The right side faces south over the bay and gives a clear view of the Wicklow Mountains inland, while the left side looks north over flat coastal farmland. Runway 10 arrivals from the west put the city on the left, but 28 is the more common configuration. Notable sights include: Dublin Bay and the curved coastline from Howth to Dun Laoghaire, the Wicklow Mountains rising to the south with Lugnaquilla visible on clear days, the Poolbeg Chimneys twin red-and-white stacks at the mouth of the Liffey, Dublin city centre and the Liffey estuary.

The flight from Heathrow (LHR) to Dublin (DUB) takes Approximately 1 hour 20 minutes.

The flight crosses the Chilterns briefly after departure, then tracks northwest over the English Midlands before crossing the Welsh coast near Anglesey or the Lleyn Peninsula. The Irish Sea crossing takes roughly 20-25 minutes at cruise altitude, with no land visible. The flight then descends over the Irish coast north of Dublin before turning south for the approach.