Cheap flights from London Stansted Airport to Northern Ireland from £23

In general, December is the cheapest month to fly from London Stansted Airport to Northern Ireland. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £15. If you’re not able to fly to Northern Ireland in December, then November is your next best option. Flight prices from London Stansted Airport to Northern Ireland during November average around £15.

The cheapest day to depart from London Stansted Airport to Northern Ireland is on a Tuesday. Travellers who choose to depart for Northern Ireland on a Tuesday will often find tickets for as low as £49. If your travel schedule is flexible, try to avoid departing on a Friday because tickets tend to average around £74. These prices are subject to change though, so be sure to set up a Price Alert for flights to Northern Ireland.

Flying to Northern Ireland from London Stansted Airport in the morning is the least expensive time of day to depart. momondo users have found prices as low as £62 when looking at flights departing in the morning. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are £73 on average. Flights to Northern Ireland from London Stansted Airport in the afternoon are generally more expensive because this time of day is more convenient for travellers’ schedules.

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

You are more likely to see cheaper flights to Northern Ireland from London Stansted Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Northern Ireland 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 Northern Ireland from London Stansted Airport for as low as £44 on momondo.

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

Ryanair, easyJet and Ryanair are the top three most popular airlines that fly to Northern Ireland from London Stansted Airport according to our data. Ryanair is the first choice among our users, with 53% of people opting to fly with this airline when travelling to Northern Ireland. Keep in mind that there are 3 different airlines that fly to Northern Ireland on a routine basis, so you have a few additional options to choose from.

2 flights are operational daily from London Stansted Airport to Northern Ireland as of May 2026. The most popular departure time for this route is 12:00, with 33% of flights per day taking off at midday.

As of May 2026, 16 flights take off from London Stansted Airport and land in Northern Ireland each week. The most common flight departure day for this route is Fri, with 31% of weekly flights taking off on this day.