Cheap flights from London to Belfast from €134

The cheapest month to fly to Belfast Intl Airport from London is in January. Flight prices, which tend to average around €60, are often lower during this time because this is during the off-season. The month of November is another great option to travel to Belfast Intl Airport, with average flight prices from London averaging around €69.

Our data shows that Sunday is the least expensive day to fly to Belfast Intl Airport. Tickets to fly out on this day can be as low as €138. Flights from London to Belfast Intl Airport on a Saturday will generally be more expensive and average around €209. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

The cheapest time of day to fly to Belfast Intl Airport is in the afternoon when flights can be purchased for as low as €137. Flights in the evening are often more expensive, with an average ticket price of €341.

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

You are more likely to see cheaper flights to Belfast Intl Airport from London when booking weeks ahead of your departure date. In general, you can expect to find flights to Belfast Intl Airport for around €167 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Belfast Intl Airport from London for as low as €113 on momondo.

There is only 1 cabin class available to choose from on London to Belfast Intl Airport 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 London to Belfast Intl Airport.

As of September 2026, prices for London to Belfast Intl Airport flights are approximately 0% more expensive when compared to flights at the same time last year.