Cheap flights from Dublin to London from C$ 59

The month of January is, on average, the cheapest month to fly to London Heathrow Airport from Dublin, with most prices found around C$ 190. If you aren’t able to travel to London Heathrow Airport during the month of January, then flying in February is also cheap. Prices for this month can be found on momondo for an average of C$ 203.

According to our data, Thursday is the cheapest day to fly to London Heathrow Airport from Dublin. The lowest ticket price found for a Thursday departure recently was C$ 300. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. When flying out on a Friday, the most expensive travel day of the week, you can expect to see flight prices from Dublin to London Heathrow Airport for around C$ 938.

Our data shows that the cheapest Dublin to London Heathrow Airport flights are usually those with departure times in the evening. Our users have found flights to London Heathrow Airport in the evening for as low as C$ 247. In the morning is when there is more demand to fly to London Heathrow Airport, so prices are often more expensive at around C$ 1,105 per ticket.

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

You are more likely to see cheaper flights to London Heathrow Airport from Dublin when booking weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around C$ 235 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London Heathrow Airport from Dublin for as low as C$ 173 on momondo.

There are 2 cabin classes available to choose from on Dublin to London Heathrow Airport flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Historically, on average around 16% of flights between Dublin and London have experienced a delay on any given week. The average delay length over the past 12 months has been 98 minutes.

Generally, flights departing in the morning tend to experience fewer delays. Flights departing at night 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.

55 flights are operational daily from Dublin to London Heathrow Airport as of November 2026. The most popular departure time for this route is 8:00a.m., with 43% of flights per day taking off at noon.

388 flights are operational weekly from Dublin to London Heathrow Airport as of November 2026. The most popular departure day for this route is Fri, with 18% of flights per week taking off on this day.