Cheap flights from Dublin to London from $34

If you aren’t able to travel during the month of September, then book flights to London from Dublin during January instead. Flights to London in January, while not as cheap as those in September, still average around $143.

Our data shows that Thursday is the least expensive day to fly to London. Tickets to fly out on this day can be as low as $63. When flying out on a Wednesday, the most expensive travel day of the week, you can expect to see flight prices from Dublin to London for around $1,351.

The cheapest time of day to fly to London is in the afternoon when flights can be purchased for as low as $75. In contrast, the most expensive time of day to depart to London is at midday when prices are around $272.

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

You are more likely to see cheaper flights to London from Dublin when booking weeks ahead of your departure date. In general, you can expect to find flights to London for around $239 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London from Dublin for as low as $177 on momondo.

There are 3 cabin classes available to choose from on Dublin to London 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 103 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. Friday has historically seen more delays on average compared to the rest of the week.

According to our data, Aer Lingus have had the fewest delays on this route over the last 12 months, with about 14% of their flights experiencing any sort of delay.

As of November 2026, 53 flights take off from Dublin and land in London each day. The most common flight departure time for this route is 08:00, with 43% of daily flights taking off at midday.

As of November 2026, there are 373 flights per week flying from Dublin to London. The most common day of the week flights depart is Mon, with 28% of flights taking off on this day.