Cheap flights from London Heathrow to Belfast

Q: How much are flights normally?

£ 88. If you see flights from London Heathrow to Belfast for less than this, you've found a good deal.

Q: What are the cheapest airlines?

British Airways. These airlines usually offer the cheapest flights from London Heathrow to Belfast.

Q: Can I fly direct to Belfast?

British Airways. You can fly non-stop from London Heathrow to Belfast with these airlines.

Q: When is high season?

April. This is the most expensive time to fly to Belfast. If this is when you want to go, book your flight from London Heathrow in advance.

Q: When is the cheapest time to fly?

January. Flights from London Heathrow to Belfast are usually cheaper at this time of year.

Q: How long is the flight?

1 hrs 15 mins. This is the shortest flight time from London Heathrow to Belfast.

Q: How long should I stay in Belfast?

6 days. Most people spend this amount of time in Belfast.

from as little as £140

3 nights in Belfast, departing London Heathrow on 03 / Jul / 2025 with British Airways (price found 85 hours ago)

Subject to availability, prices correct of the last 24 hours

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Cheap return flights from London Heathrow to Belfast

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The London Heathrow / Belfast route

All 522 km of it

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Belfast flight facts

What you need to know

How much are flights normally?

£ 88

If you see flights from London Heathrow to Belfast for less than this, you've found a good deal.

What are the cheapest airlines?

British Airways

These airlines usually offer the cheapest flights from London Heathrow to Belfast.

Can I fly direct to Belfast?

British Airways

You can fly non-stop from London Heathrow to Belfast with these airlines.

When is high season?

April

This is the most expensive time to fly to Belfast. If this is when you want to go, book your flight from London Heathrow in advance.

When is the cheapest time to fly?

January

Flights from London Heathrow to Belfast are usually cheaper at this time of year.

How long is the flight?

1 hrs 15 mins

This is the shortest flight time from London Heathrow to Belfast.

How long should I stay in Belfast?

6 days

Most people spend this amount of time in Belfast.

Alternative flights from the UK to Belfast

Check out prices for other routes

London to Belfast

from £140 pp

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Manchester to Belfast

from £157 pp

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Edinburgh to Belfast

from £160 pp

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Birmingham to Belfast

from £153 pp

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London City Airport to Belfast

from £197 pp

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London Gatwick to Belfast

search for price

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London Stansted to Belfast

search for price

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Alternative flights from London Heathrow

You might find cheaper flights nearby

George Best Belfast City Airport from London Heathrow

from £140 pp

Find flights

03 / Jul / 2025 is currently the lowest priced day of the year to fly the London Heathrow/Belfast route. There are around 50 flights on any given week from the UK to Belfast and the cheapest month to fly right now is July.

Not suitable? Try running another search or viewing all cheap flight deals.

Min / Max Temperature (°C)

LOWEST

2 °C

AVG

10 °C

HIGHEST

20 °C

Rainfall (mm)

LOWEST

50 mm

AVG

72.5 mm

HIGHEST

90 mm

Key facts about Belfast

Currency

British pound

Language

English

Timezone

0 hrs behind GMT

How to get cheap flights from London Heathrow to Belfast

Tips and advice from our flight experts

We've collated all the flights from London Heathrow to Belfast, to help you find the best deal. The most popular airlines are British Airways.

50 flights go to Belfast every week. It usually takes roughly 1 hrs 15 mins to fly from London Heathrow. Keep an eye out for flights landing in George Best Belfast City Airport because this tends to be the cheapest airport to fly into – but this isn’t necessarily the case for your travel dates.

Prices currently start from £140. This is based on your search for flights from London Heathrow, but there are other airports nearby. Try adjusting your search to include surrounding departure airports, to see if you can find a better rate. You'll find that, generally, April has the most expensive prices.

As well as helping you out with flights, Netflights can find you great prices on accommodation and car hire too. If you’re travelling to United Kingdom in January, you'll find that both flights and hotels will be cheaper, as it's low season.