London to Killarney
London to Killarney is cheapest in September. April, the most expensive month we measured, costs about 24 € more.
London to Killarney is 627 km flown direct. Every fare we measured came from Ryanair.
That comes from pricing 331 departure dates across 12 months. Every figure below is a fare we measured on the day shown, not a live quote. When we have nothing fresh to say about a route, its page stops existing.
What is a good price from London to Killarney?
Anything at or below the quarter mark beats three in four of the 331 one-way fares we measured here. Above the median, wait or move the date.
seen 18 Aug 2026
How far ahead do the cheap fares sit?
When we measured, the cheapest quarter of fares sat between 36 and 96 days before departure, closer in than the market as a whole. The cheap fares were on nearer dates, not months away, when we looked.
a snapshot of where the cheap seats sat, seen 18 Aug 2026
Which day of the week is cheapest?
On average, Sunday departures came out lowest and Friday highest, a spread of about 11 €. The day matters less than the month here: pick the month first, then the day.