What is the cheapest airline to fly from London Heathrow Airport to Belfast Intl Airport round-trip?

British Airways, at C$ 168, was found to be the cheapest airline from London Heathrow Airport to Belfast Intl Airport.. Users have found that British Airways is 29% cheaper than the other options available to this destination.

What is the cheapest day to fly from London Heathrow Airport to Belfast Intl Airport?

Travelers seeking maximum savings on their London Heathrow Airport to Belfast Intl Airport flight should consider departing on Sunday afternoons when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

In terms of precipitation, rainfall in Belfast Intl Airport ranges from 50.0 - 90.0 mm per month. October is typically the wettest month, when rainfall can reach 90.0 mm. April is typically the driest time to visit Belfast Intl Airport when rainfall is around 50.0 mm.

If weather is an important factor for your trip to Belfast Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 16.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 5.0 C).

What is the cheapest day to fly round-trip from London Heathrow Airport to Belfast Intl Airport?

Thursday flights are generally found to be more expensive for flights from London Heathrow Airport to Belfast Intl Airport. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Belfast Intl Airport.

What is the cheapest month to fly from London Heathrow Airport to Belfast Intl Airport?

January can be a great time to fly to Belfast Intl Airport from London Heathrow Airport with a flight ticket averaging about C$ 122. Cheapflights users have found deals in the month of January for as cheap as C$ 50. The most expensive prices can be found in the month of July.

Can I find deals for flights from Heathrow to Belfast Intl that include hotel bookings?

Yes. In addition to deals on Heathrow to Belfast Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Heathrow to Belfast Intl?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Heathrow to Belfast Intl.

Can I find deals for business class flights from Heathrow to Belfast Intl?

Yes. Cheapflights offers flight deals from Heathrow to Belfast Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

Find Flights from London Heathrow Airport to Belfast Intl Airport

Q: How far in advance should I book a flight from London Heathrow Airport to Belfast Intl Airport?

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 44 days in advance, which can save you up to 152% on flights from London Heathrow Airport to Belfast Intl Airport compared to booking the week you need them. Waiting 44 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at C$ 121. For sooner than that we have options available in the next 3 days from C$ 197.

Cheap flight deals from Heathrow to Belfast Intl

Popular in	July
Cheapest in	January
Average price	C$ 220

Highest demand for flights based on searches. 15% potential increase in price (C$ 59 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (C$ 9 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in September 2025

Search Deals

Best time to book a flight from Heathrow to Belfast Intl

Have a flexible travel schedule? Discover the best time to fly to Belfast Intl from Heathrow with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from London Heathrow Airport to Belfast Intl Airport

How far ahead should I book a flight from London Heathrow Airport to Belfast Intl Airport?

To ensure you get the cheapest price possible for a flight from London Heathrow Airport to Belfast Intl Airport, you should look to book at least 66 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest time of day to fly from LHR to BFS?

A simple way to save on the total cost of your ticket is to fly from London Heathrow Airport to Belfast Intl Airport in the morning. If you’re flexible enough to do this you can expect to save up to 13% on your trip compared to booking a flight at noon.

Reviews of airlines servicing Belfast Intl

Check out reviews from past customers who have flown with British Airways from London Heathrow Airport to Belfast Intl Airport to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

British Airways

6.7

Okay

7,361 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,Aug 2025

LHR - FCO

The crew was wonderful. Service was great. The discomfort came from the passenger behind me kicking the seat.

British Airways

6.7

Okay

7,361 reviews

British Airways

6.7

Okay

7,361 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,Aug 2025

LHR - FCO

The crew was wonderful. Service was great. The discomfort came from the passenger behind me kicking the seat.

Related info for your journey

What is the cheapest airline to fly from London Heathrow Airport to Belfast Intl Airport round-trip?
British Airways, at C$ 168, was found to be the cheapest airline from London Heathrow Airport to Belfast Intl Airport.. Users have found that British Airways is 29% cheaper than the other options available to this destination.
Can I find deals for flights from Heathrow to Belfast Intl that include hotel bookings?
Yes. In addition to deals on Heathrow to Belfast Intl flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Heathrow to Belfast Intl?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Heathrow to Belfast Intl.
Can I find deals for business class flights from Heathrow to Belfast Intl?
Yes. Cheapflights offers flight deals from Heathrow to Belfast Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

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Belfast Intl Airport car rentals

Belfast car rentals

Top airline flying from Heathrow to Belfast Intl

Airline	Cheapest	Average	Flexibility	On-time
British Airways	CheapestC$ 168	AverageC$ 245	FlexibilityNo cancel fee	On-time70%	Search British Airways flights

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How does Cheapflights help users find flights from Heathrow to Belfast Intl?

When you search for this flight from Heathrow to Belfast Intl, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from Heathrow to Belfast Intl?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Belfast Intl from Heathrow.

Can Cheapflights find flights from Heathrow to Belfast Intl with no change fees?

Certainly. Search results for flights to Belfast Intl from Heathrow shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Heathrow to Belfast Intl become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Belfast Intl from Heathrow today and book when prices fit your budget.

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Cheap flights from London Heathrow Airport to Belfast Intl Airport

Cheap flight deals from Heathrow to Belfast Intl

Popular in

Cheapest in

Average price

Best time to book a flight from Heathrow to Belfast Intl

Have a flexible travel schedule? Discover the best time to fly to Belfast Intl from Heathrow with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from London Heathrow Airport to Belfast Intl Airport

How far ahead should I book a flight from London Heathrow Airport to Belfast Intl Airport?

What is the cheapest time of day to fly from LHR to BFS?

Reviews of airlines servicing Belfast Intl

Check out reviews from past customers who have flown with British Airways from London Heathrow Airport to Belfast Intl Airport to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Heathrow to Belfast Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What is the cheapest airline to fly from London Heathrow Airport to Belfast Intl Airport round-trip?

Can I find deals for flights from Heathrow to Belfast Intl that include hotel bookings?

How can I find direct flights from Heathrow to Belfast Intl?

Can I find deals for business class flights from Heathrow to Belfast Intl?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Complete your trip

Complete your trip to Belfast Intl by adding a car rental and/or hotel reservation to your travel itinerary.

Top airline flying from Heathrow to Belfast Intl

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Heathrow to Belfast Intl?

Why should you use Cheapflights to find cheap flight tickets from Heathrow to Belfast Intl?

Can Cheapflights find flights from Heathrow to Belfast Intl with no change fees?

Can Cheapflights notify me if prices for flights from Heathrow to Belfast Intl become cheaper?

100% Free

Book with Flexibility

Travel Smart