Cheap flights from Belfast to London from £18

The cheapest month to fly to London Stansted Airport from Belfast 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 Belfast. The lowest ticket price found for a Thursday departure recently was £58. 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 £72.

Our data shows that the cheapest Belfast 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 £52. Flights in the morning are often more expensive, with an average ticket price of £67.

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

You are more likely to see cheaper flights to London Stansted Airport from Belfast 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 Belfast for as low as £35 on momondo.

Historically, on average around 11% of flights between Belfast and London have experienced a delay on any given week. The average delay length over the past 12 months has been 106 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.

Tuesday is statistically the day of the week that experiences the fewest delays on this flight route. Sunday has historically seen more delays on average compared to the rest of the week.

According to our data, easyJet have had the fewest delays on this route over the last 12 months, with about 10% of their flights experiencing any sort of delay.

2 flights are operational daily from Belfast 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.

As of May 2026, there are 15 flights per week flying from Belfast to London Stansted Airport. The most common day of the week flights depart is Mon, with 40% of flights taking off on this day.