Cheap flights from London to Dublin from C$ 39

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 C$ 138.

On average, the least expensive day to fly to Dublin from London is on a Saturday. momondo users have found tickets for Saturday departures for as low as C$ 167. However, this price may fluctuate depending on the airline, the season, and holidays. If your travel schedule is flexible, try to avoid departing on a Friday because tickets tend to average around C$ 318. These prices are subject to change though, so be sure to set up a Price Alert for flights to Dublin.

According to our data, the cheapest time of day to fly to Dublin is in the evening. momondo users have found flights departing from London to Dublin in the evening for as low as C$ 138. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights in the morning are often more expensive with an average ticket price of C$ 264.

Fly from London Stansted 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 C$ 250 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 C$ 181 on momondo.

There are 2 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, Aer Lingus, and British Airways 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 43% of people opting to fly with this airline when travelling 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 105 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.

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

According to our data, Aer Lingus has had the least delays on this route over the last 12 months, with about 13% of their flights experiencing any sort of delay.

The number of flights available between London and Dublin is 71 per day as of September 2026. The most frequent departure time is 8:00a.m., with 42% of daily flights leaving in the afternoon.

The number of flights available between London and Dublin is 501 per week as of September 2026. The most frequent departure day is Mon, with 21% of weekly flights leaving on this day.