Cheap flights from Northern Ireland to London from £18

The cheapest month to fly to London Stansted Airport from Northern Ireland is in December. Flight prices, which tend to average around £15, are often lower during this time because this is during the off-season. If you aren’t able to travel to London Stansted Airport during the month of December, then flying in September is also cheap. Prices for this month can be found on momondo for an average of £15.

According to our data, Thursday is the cheapest day to fly to London Stansted Airport from Northern Ireland. The lowest ticket price found for a Thursday departure recently was £59. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. The most expensive day to fly to London Stansted Airport is Saturday, with ticket prices averaging around £70.

Our data shows that the cheapest Northern 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 £53. Flights in the afternoon are often more expensive, with an average ticket price of £68.

Fly from Belfast Intl to London Stansted for the best Northern Ireland - London Stansted flight prices

You are more likely to see cheaper flights to London Stansted Airport from Northern Ireland when booking weeks ahead of your departure date. In general, you can expect to find flights to London Stansted Airport for around £64 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 Northern Ireland for as low as £35 on momondo.

Ryanair and easyJet are the most popular carriers operating from Northern Ireland to London Stansted

Ryanair, easyJet and Ryanair are the top three most popular airlines that fly to London Stansted Airport from Northern Ireland according to our data. Ryanair is the first choice among our users, with 54% of people opting to fly with this airline when travelling to London Stansted Airport. Keep in mind that there are 3 different airlines that fly to London Stansted Airport on a routine basis, so you have a few additional options to choose from.

2 flights are operational daily from Northern Ireland to London Stansted Airport as of May 2026. The most popular departure time for this route is 06:00, with 50% of flights per day taking off at midday.

The number of flights available between Northern Ireland and London Stansted Airport is 16 per week as of May 2026. The most frequent departure day is Fri, with 44% of weekly flights leaving on this day.