Cheap flights from Ireland to London from €15

The month of April is, on average, the cheapest month to fly to London Stansted Airport from Ireland, with most prices found around €30. If you don’t want to visit London Stansted Airport in April, then you should wait until August to fly from Ireland, when ticket prices are also cheap, with an average price of €32.

On average, the least expensive day to fly to London Stansted Airport from Ireland is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as €88. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Ireland to London Stansted Airport for around €121.

Our data shows that the cheapest Ireland to London Stansted Airport flights are usually those with departure times in the evening. Our users have found flights to London Stansted Airport in the evening for as low as €77. In the morning is when there is more demand to fly to London Stansted Airport, so prices are often more expensive at around €109 per ticket.

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

You are more likely to see cheaper flights to London Stansted Airport from Ireland when booking weeks ahead of your departure date. In general, you can expect to find flights to London Stansted Airport for around €81 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London Stansted Airport from Ireland for as low as €54 on momondo.

Historically, on average around 16% 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 107 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.

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 16% of their flights experiencing any sort of delay.

As of May 2026, 7 flights take off from Ireland and land in London Stansted Airport each day. The most common flight departure time for this route is 06:00, with 41% of daily flights taking off at midday.

The number of flights available between Ireland and London Stansted Airport is 54 per week as of May 2026. The most frequent departure day is Mon, with 30% of weekly flights leaving on this day.