Cheap flights from the United Kingdom to Northern Ireland from £20

In general, January is the cheapest month to fly from United Kingdom to Northern Ireland. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £42. If you’re not able to fly to Northern Ireland in January, then November is your next best option. Flight prices from United Kingdom to Northern Ireland during November average around £47.

Flying to Northern Ireland from United Kingdom in the morning is the least expensive time of day to depart. momondo users have found prices as low as £134 when looking at flights departing in the morning. If you have a flexible travel schedule, then try to avoid flying in the evening when prices are £166 on average. Flights to Northern Ireland from United Kingdom in the evening 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 United Kingdom - Northern Ireland flight prices

You are more likely to see cheaper flights to Northern Ireland from United Kingdom when booking weeks ahead of your departure date. In general, you can expect to find flights to Northern Ireland for around £142 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 United Kingdom for as low as £100 on momondo.

There are 3 cabin classes available to choose from on United Kingdom to Northern Ireland flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

No. A direct flight is the cheapest option for a flight between United Kingdom to Northern Ireland.

easyJet and British Airways are the most popular carriers operating from United Kingdom to Northern Ireland

easyJet, Aer Lingus and Ryanair are the top three most popular airlines that fly to Northern Ireland from United Kingdom according to our data. easyJet is the first choice among our users, with 60% of people opting to fly with this airline when travelling to Northern Ireland. Keep in mind that there are 7 different airlines that fly to Northern Ireland on a routine basis, so you have a few additional options to choose from.

27 flights are operational daily from United Kingdom to Northern Ireland as of April 2026. The most popular departure time for this route is 08:00, with 41% of flights per day taking off in the afternoon.

As of April 2026, 194 flights take off from United Kingdom and land in Northern Ireland each week. The most common flight departure day for this route is Tue, with 34% of weekly flights taking off on this day.