Cheap flights from Northern Ireland to London from £18

The cheapest month to fly to London Luton Airport from Northern Ireland is in January. Flight prices, which tend to average around £44, are often lower during this time because this is during the off-season. If you don’t want to visit London Luton Airport in January, then you should wait until December to fly from Northern Ireland, when ticket prices are also cheap, with an average price of £52.

The cheapest day to depart from Northern Ireland to London Luton Airport is on a Thursday. Travellers who choose to depart for London Luton Airport on a Thursday will often find tickets for as low as £69. Be sure to avoid booking your departure on a Tuesday as prices are generally higher than usual. According to our data, the average ticket price to London Luton Airport on Tuesday is £101.

Our data shows that the cheapest Northern Ireland to London Luton Airport flights are usually those with departure times in the evening. Our users have found flights to London Luton Airport in the evening for as low as £75. Try not to purchase tickets in the morning because they tend to be around £93. Of course, these prices can vary depending on the time of year and what airport you fly to.

Fly from Belfast City to London Luton for the best Northern Ireland - London Luton flight prices

You are more likely to see cheaper flights to London Luton Airport from Northern Ireland when booking weeks ahead of your departure date. In general, you can expect to find flights to London Luton Airport for around £75 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London Luton Airport from Northern Ireland for as low as £41 on momondo.

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

As of February 2026, 1 flights take off from Northern Ireland and land in London Luton Airport each day. The most common flight departure time for this route is 08:00, with 58% of daily flights taking off at midday.

The number of flights available between Northern Ireland and London Luton Airport is 13 per week as of February 2026. The most frequent departure day is Thu, with 38% of weekly flights leaving on this day.