London to Dublin: 449 km, 1h 20m–1h 30m flight time. 3 airlines including Ryanair and Aer Lingus. Best months: March, April, May. From £25–90.
London to Dublin is one of the world's busiest international air routes, with dozens of departures daily from multiple London airports. Ryanair, which made its name on this route, offers some of the cheapest fares in European aviation — sub-£30 one-way fares are regularly available on off-peak dates. Aer Lingus provides a more comfortable full-service alternative with better baggage allowances and in-flight service. British Airways connects Heathrow and London City to Dublin for business travelers.
Dublin is a vibrant city with a rich literary and musical heritage, exceptional pubs, and easy access to the Irish countryside. The Wild Atlantic Way, Ireland's 2,500km coastal driving route, starts just west of Dublin and winds through some of the most dramatic scenery in Europe. Renting a car at Dublin Airport puts you on this road within an hour. Remember that Ireland drives on the left — the same as the UK — so driving should feel natural for UK visitors.
| Airline | Type | Direct? | Duration | From |
|---|---|---|---|---|
| Ryanair | 💰 Budget | ✅ Yes | 1h 25m | £25–90 |
| Aer Lingus | ✈️ Full Service | ✅ Yes | 1h 20m | £55–160 |
| British Airways | ✈️ Full Service | ✅ Yes | 1h 20m | £70–180 |
Book March flights 6-8 weeks in advance for the best London to Dublin fares.
Compare prices across all airlines for this route.
Data and regulations verified against official sources. Last checked 2026-04-27.
Ryanair regularly advertises fares under £20–30 one-way on this route. Even with bag fees, it remains one of the cheapest flights in Europe. Book Tuesday–Thursday for the lowest prices and avoid Irish bank holiday weekends.
Yes, Irish Ferries and Stena Line sail from Holyhead (North Wales) to Dublin in 3h 30m by fast ferry or 4h by standard. From London, total journey time is 5–6 hours by train+ferry, making it a viable overnight or scenic alternative.
Terminal 1 handles Ryanair and Aer Lingus regional flights. Terminal 2 handles Aer Lingus mainline services and most other airlines. Both terminals are connected and close together.
Secret fare tricks, best booking windows, and airline comparison charts — free PDF download.
Free. No spam. Unsubscribe anytime.