Cheap flights from London to Dublin from $27

In general, January is the cheapest month to fly from London to Dublin. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $60. If you’re not able to fly to Dublin in January, then September is your next best option. Flight prices from London to Dublin during September average around $73.

The cheapest day to depart from London to Dublin is on a Thursday. Travelers who choose to depart for Dublin on a Thursday will often find tickets for as low as $152. Flights from London to Dublin on a Sunday will generally be more expensive and average around $251. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

In the evening is the cheapest time of day to fly from London to Dublin when you can find flight prices for as low as $134. Flying to Dublin in the evening is an ideal time because this is during off-peak travel hours. Flights in the morning are often more expensive with an average ticket price of $203.

Fly from London Luton to Dublin for the best London - Dublin flight prices

You are more likely to see cheaper flights to Dublin from London when booking weeks ahead of your departure date. In general, you can expect to find flights to Dublin for around $176 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Dublin from London for as low as $131 on momondo.

There are 4 cabin classes available to choose from on London to Dublin flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Ryanair, British Airways, and Norwegian are the most popular carriers operating from London to Dublin

Ryanair, British Airways and Aer Lingus are the top three most popular airlines that fly to Dublin from London according to our data. Ryanair is the first choice among our users, with 40% of people opting to fly with this airline when traveling to Dublin. Keep in mind that there are 3 different airlines that fly to Dublin on a routine basis, so you have a few additional options to choose from.

Historically, on average around 18% of flights between London and Dublin have experienced a delay on any given week. The average delay length over the past 12 months has been 104 minutes.

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

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

According to our data, British Airways have had the least number of delays on this route over the last 12 months; with about 14% of their flights experiencing any sort of delay.

50 flights are operational daily from London to Dublin as of April 2026. The most popular departure time for this route is 8:00AM, with 46% of flights per day taking off in the afternoon.

354 flights are operational weekly from London to Dublin as of April 2026. The most popular departure day for this route is Thu, with 23% of flights per week taking off on this day.