London to Dublin Flights (LON – DUB)

There aren't many international flights where you board, flip through a magazine, and land before you've had time to get properly bored. London to Dublin is that route. Separated by roughly 280 miles of Irish Sea, these two cities are connected by one of the busiest and most reliable short-haul corridors in Europe — with flight times hovering around 1 hour 15 minutes and departures spread generously across the day. For business travellers, it's practically a commuter route. For everyone else, it's the easiest possible entry point into one of Europe's most genuinely loveable cities.

Leaving London: Which Airport Is Right for You?

London gives you options, which is either helpful or overwhelming depending on your perspective.

• Heathrow Airport (LHR), in west London, is the UK's largest and most connected hub — fast rail links into Paddington make it the most convenient departure point if you're coming from central London.
• Gatwick Airport (LGW) to the south handles strong volumes on this route and is well-served by trains from Victoria and London Bridge.
• Stansted Airport (STN) in the northeast is worth a look if price is your priority — it consistently hosts competitive fares, though the express train into Liverpool Street adds time and cost to your total journey.
• Luton Airport (LTN) rounds out your options and occasionally produces the sharpest deals on the market, particularly for flexible travellers.

The honest advice: don't default to the closest airport without checking the others. On a route this busy, a 30-minute extra commute to a different terminal can sometimes save you significantly more than it costs.

Arriving at Dublin Airport

Every flight on this route lands at Dublin Airport (DUB), located about 6 miles north of the city centre. It's Ireland's main international gateway and handles the volume well — two terminals, straightforward signage, and generally efficient processing for passengers arriving from the UK.

• Express coach services run regularly and reach the city centre in around 25–35 minutes.
• Taxis and ride-hail options are available immediately outside both terminals.
• If you're planning to go beyond Dublin — and you should — car hire desks are inside the arrivals hall, though booking ahead in summer is strongly recommended.

Best Time to Book London to Dublin Flights

• Late April through May is a sweet spot that frequent travellers quietly rely on — mild weather, affordable fares, and a city that hasn't yet been overtaken by summer crowds.
• June to August brings the best of Dublin's outdoor energy, long evenings, and a packed cultural calendar, but airfare climbs accordingly and accommodation books out fast. Set fare alerts early if summer is your only window.
• September and October offer a compelling case for shoulder-season travel — noticeably quieter, still comfortable, and genuinely cheaper across flights and hotels alike.
• Winter travel from November through February has its own rewards: rock-bottom fares outside the Christmas peak, a city that leans hard into its pub and indoor culture, and a more local, unhurried experience overall.

What Waits for You in Dublin

• Trinity College sits at the heart of the south side — its cobbled squares and 18th-century library feel removed from the city noise, and the ancient illuminated manuscript it houses has been drawing visitors for centuries.
• A short walk west brings you to Dublin Castle, which has functioned as everything from a Viking fortress to a seat of British rule and now anchors a neighbourhood full of good restaurants and independent shops.
• Temple Bar gets loud on weekends, but beneath the surface noise it holds some of the best live traditional music venues in the country — the kind where sessions start late and last longer than expected.
• Head north across the River Liffey into the Northside for a grittier, less curated version of the city: street markets, local bakeries, and a creative quarter that's been slowly finding its feet for years.
• Howth — a fishing village perched on a dramatic headland — is 30 minutes by commuter rail and offers cliff walks with views that feel disproportionately rewarding for the effort.
• The Wicklow Mountains sit under an hour south by car, while Newgrange, a Neolithic passage tomb older than the Egyptian pyramids, is a straightforward day trip north of the city.

A Few Things Worth Knowing Before You Fly

• Tuesday and Wednesday departures tend to produce the lowest fares on this route — weekend pricing runs noticeably higher.
• Travelling with cabin baggage only keeps things quick at both ends and often unlocks a cheaper base fare.
• Direct flights dominate the LON–DUB corridor entirely, so any itinerary involving a connection isn't worth the complication.
• If your dates have any flexibility at all, a fare alert will do more work for you than manually refreshing search results ever will.