Cheap flights from Ireland to London from £13

The cheapest month to fly to London Gatwick Airport from Ireland is in January. Flight prices, which tend to average around £50, are often lower during this time because this is during the off-season. If you don’t want to visit London Gatwick Airport in January, then you should wait until April to fly from Ireland, when ticket prices are also cheap, with an average price of £55.

According to our data, Tuesday is the cheapest day to fly to London Gatwick Airport from Ireland. The lowest ticket price found for a Tuesday departure recently was £55. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. Flights from Ireland to London Gatwick Airport on a Friday will generally be more expensive and average around £91. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

Our data shows that the cheapest Ireland to London Gatwick Airport flights are usually those with departure times at midday. Our users have found flights to London Gatwick Airport at midday for as low as £67. In contrast, the most expensive time of day to depart to London Gatwick Airport is in the evening when prices are around £89.

Fly from Shannon to London Gatwick for the best Ireland - London Gatwick flight prices

You are more likely to see cheaper flights to London Gatwick Airport from Ireland when booking weeks ahead of your departure date. In general, you can expect to find flights to London Gatwick Airport for around £72 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London Gatwick Airport from Ireland for as low as £48 on momondo.

There is only 1 cabin class available to choose from on Ireland to London Gatwick 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 15% of flights between Ireland and London 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 evening have, in the past, seen delays more frequently in comparison.

Wednesday 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, Ryanair have had the fewest delays on this route over the last 12 months, with about 14% of their flights experiencing any sort of delay.

The number of flights available between Ireland and London Gatwick Airport is 4 per day as of August 2026. The most frequent departure time is 15:00, with 45% of daily flights leaving at midday.

As of August 2026, there are 29 flights per week flying from Ireland to London Gatwick Airport. The most common day of the week flights depart is Thu, with 41% of flights taking off on this day.