London to Killarney
London to Killarney is cheapest in September and October, both at 15 €. January, the most expensive month we measured, costs about 13 € more.
London to Killarney is 668 km flown direct. Every fare we measured came from Ryanair.
That comes from pricing 127 departure dates across 8 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 127 one-way fares we measured here. Above the median, wait or move the date.
seen 17 Aug 2026
How far ahead do the cheap fares sit?
When we measured, the cheapest quarter of fares sat between 22 and 56 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 17 Aug 2026
Which day of the week is cheapest?
On average, Monday departures came out lowest and Wednesday highest, a spread of about 14 €. On this route the day moves the price about as much as the month does, which is unusual: check both before booking.