Cheap flights from London Heathrow Airport to Dublin from C$ 85

If you’re not able to fly to Dublin in January, then October is your next best option. Flight prices from London Heathrow Airport to Dublin during October average around C$ 213.

On average, the least expensive day to fly to Dublin from London Heathrow Airport is on a Thursday. momondo users have found tickets for Thursday departures for as low as C$ 185. 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 Wednesday because tickets tend to average around C$ 573. 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 Heathrow Airport to Dublin in the evening for as low as C$ 103. 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$ 289.

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

You are more likely to see cheaper flights to Dublin from London Heathrow Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Dublin for around C$ 239 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Dublin from London Heathrow Airport for as low as C$ 174 on momondo.

Historically, on average around 14% 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 at night 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. Sunday 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 14% of their flights experiencing any sort of delay.

As of April 2026, there are 55 flights per day flying from London Heathrow Airport to Dublin. The most common time of day flights depart is 8:00a.m., with 44% of flights taking off in the afternoon.

386 flights are operational weekly from London Heathrow Airport to Dublin as of April 2026. The most popular departure day for this route is Mon, with 19% of flights per week taking off on this day.