Cheap flights from London Heathrow Airport to Belfast from £45

The cheapest month to fly to Belfast from London Heathrow Airport is in March. Flight prices, which tend to average around £105, are often lower during this time because this is during the off-season. If you aren’t able to travel to Belfast during the month of March, then flying in November is also cheap. Prices for this month can be found on momondo for an average of £113.

The cheapest day to depart on your flight to Belfast is on a Tuesday when prices can be found for as low as £64. This is often the case because there is less demand to fly during this day of the week. Flights from London Heathrow Airport to Belfast on a Friday will generally be more expensive and average around £78. 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 is in the morning when flights can be purchased for as low as £91. Flights to Belfast are more costly at midday, with an average ticket price of £120. Departure times at midday fall within the peak daily travel times, which is why tickets can be more expensive.

Fly from London Heathrow to Belfast City for the best London Heathrow - Belfast flight prices

You are more likely to see cheaper flights to Belfast from London Heathrow Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Belfast for around £136 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Belfast from London Heathrow Airport for as low as £97 on momondo.

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

British Airways is the most popular carrier operating from London Heathrow to Belfast

British Airways, Loganair and easyJet are the top three most popular airlines that fly to Belfast from London Heathrow Airport according to our data. British Airways is the first choice among our users, with 87% of people opting to fly with this airline when travelling to Belfast. Keep in mind that there are 3 different airlines that fly to Belfast on a routine basis, so you have a few additional options to choose from.

The number of flights available between London Heathrow Airport and Belfast is 14 per day as of March 2026. The most frequent departure time is 08:00, with 47% of daily flights leaving in the afternoon.

As of March 2026, 103 flights take off from London Heathrow Airport and land in Belfast each week. The most common flight departure day for this route is Mon, with 27% of weekly flights taking off on this day.