Cheap flights from Northern Ireland to London from £27

The cheapest month to fly to London Stansted Airport from Northern Ireland is in January. Flight prices, which tend to average around £36, 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 January, then flying in October is also cheap. Prices for this month can be found on momondo for an average of £51.

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 £49. 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 Friday, with ticket prices averaging around £68.

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 £51. Flights in the morning are often more expensive, with an average ticket price of £65.

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 £65 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 £46 on momondo.

There is only 1 cabin class available to choose from on Northern Ireland to London Stansted Airport flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

The number of flights available between Northern Ireland and London Stansted Airport is 6 per week as of August 2026. The most frequent departure day is Fri, with 100% of weekly flights leaving on this day.

Flight times vary depending on what airport in Northern Ireland you fly out of and what airport in London Stansted Airport you fly into. For example, flying from Belfast to London Heathrow Airport takes 1h 15m on average. On the other hand, flying from Londonderry to London Heathrow Airport takes 1h 30m on average. Keep in mind that it’s always quicker to opt for a non-stop flight, so be sure to check momondo to see if there are any available for your route.