Cheap flights from Ireland to London from €15

In general, May is the cheapest month to fly from Ireland to London Luton Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around €31. If you don’t want to visit London Luton Airport in May, then you should wait until April to fly from Ireland, when ticket prices are also cheap, with an average price of €31.

Our data shows that Sunday is the least expensive day to fly to London Luton Airport. Tickets to fly out on this day can be as low as €58. The most expensive day to fly to London Luton Airport is Wednesday, with ticket prices averaging around €100.

Our data shows that the cheapest Ireland to London Luton Airport flights are usually those with departure times in the morning. Our users have found flights to London Luton Airport in the morning for as low as €71. Try not to purchase tickets in the afternoon because they tend to be around €99. Of course, these prices can vary depending on the time of year and what airport you fly to.

Fly from Cork to London Luton for the best Ireland - London Luton flight prices

Historically, on average around 24% of flights between Ireland and London have experienced a delay on any given week. The average delay length over the past 12 months has been 103 minutes.

Generally, flights departing in the morning tend to experience fewer delays. Flights departing in the early afternoon have, in the past, seen delays more frequently in comparison.

Wednesday is statistically the day of the week that experiences the fewest delays on this flight route. Tuesday has historically seen more delays on average compared to the rest of the week.

According to our data, Ryanair have had the fewest delays on this route over the last 12 months, with about 24% of their flights experiencing any sort of delay.

As of May 2026, there are 4 flights per day flying from Ireland to London Luton Airport. The most common time of day flights depart is 16:00, with 43% of flights taking off in the afternoon.

The number of flights available between Ireland and London Luton Airport is 30 per week as of May 2026. The most frequent departure day is Fri, with 30% of weekly flights leaving on this day.