Quick answer: January is the cheapest month to fly to Dublin, with return fares typically from £30. July is the most expensive at £50–£145.
Cite this page: Atravel.uk, “The cheapest month to fly to Dublin”, updated 12 November 2026. https://atravel.uk/cheapest-month/dublin/
This is our own month-by-month fare model for Dublin: the bands come from the fares we see on UK departures, adjusted for the season, not from a single search on a single day. Use it to choose the month, then check live prices before you commit.
Typical return fares by month
| Month | Typical return | vs cheapest |
|---|---|---|
| January cheapest | £30–£95 | — |
| February | £30–£95 | — |
| March | £35–£110 | +13% |
| April | £40–£120 | +25% |
| May | £40–£125 | +31% |
| June | £45–£130 | +38% |
| July peak | £50–£145 | +50% |
| August | £45–£140 | +44% |
| September | £40–£120 | +25% |
| October | £40–£115 | +19% |
| November | £35–£110 | +13% |
| December | £45–£140 | +44% |
Indicative bands, compiled 2026-11-12. Not quotes, not live prices.
Cheapest departure airport
| From | From (return) | Cheapest month |
|---|---|---|
| London Heathrow | £30 | January |
| London Gatwick | £30 | January |
| London Stansted | £30 | January |
| London Luton | £30 | January |
| Bristol | £30 | January |
| Manchester | £35 | January |
| Birmingham | £35 | January |
| Edinburgh | £35 | January |
| Glasgow | £35 | January |
| Belfast International | £35 | January |
Why the price moves
Dublin is a year-round city route, so the fare is set by weekends and school holidays rather than by the season. January is the quiet stretch after the Christmas return; July is when everybody travels at once.
Frequently asked questions
What is the cheapest month to fly to Dublin?
January. Return fares from the UK typically start around £30, against £50–£145 in July — a difference of about 50% on the low end.
How far ahead should I book a flight to Dublin?
Six to ten weeks for most of the year, and three to four months for July, August and the Christmas fortnight.
Is January a good time to go to Dublin?
May to September, for long evenings and the coast If the reason for the trip is the weather rather than the price, check the season notes in the guide before you book on price alone.