Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from London Heathrow Airport to Belfast from $115

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London Heathrow Airport to Belfast departing on 7/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from London Heathrow Airport to Belfast

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
8:50 am - 1:00 pm
LHR
-
BFS
4h 10m
1 stop
Multiple Airlines Logo
2:20 pm - 6:00 pm
BFS
-
LHR
3h 40m
1 stop
$363Multiple Airlines
Thu, Apr 23 - Mon, Apr 27
Multiple Airlines Logo
8:55 am - 3:35 pm
LHR
-
BFS
6h 40m
1 stop
Multiple Airlines Logo
2:30 pm - 9:45 pm
BFS
-
LHR
7h 15m
2 stops
$415Multiple Airlines
Sat, Apr 18 - Fri, Apr 24
Multiple Airlines Logo
12:00 pm - 7:40 pm
LHR
-
BFS
7h 40m
2 stops
Multiple Airlines Logo
9:35 am - 8:05 pm
BFS
-
LHR
10h 30m
1 stop
$417Multiple Airlines
Wed, Apr 8 - Wed, Apr 15
Multiple Airlines Logo
7:40 am - 2:50 pm
LHR
-
BFS
7h 10m
2 stops
Multiple Airlines Logo
10:35 am - 4:35 pm
BFS
-
LHR
6h 00m
1 stop
$485Multiple Airlines
Sat, Apr 11 - Sat, Apr 18
Multiple Airlines Logo
6:15 pm - 9:40 pm
LHR
-
BFS
3h 25m
1 stop
Multiple Airlines Logo
5:05 pm - 9:00 pm
BFS
-
LHR
3h 55m
1 stop
$507Multiple Airlines
Fri, Apr 3 - Sun, Apr 5
Multiple Airlines Logo
7:00 am - 3:25 pm
LHR
-
BFS
8h 25m
1 stop
Multiple Airlines Logo
2:05 pm - 8:20 pm
BFS
-
LHR
6h 15m
2 stops
$587Multiple Airlines
Thu, Mar 26 - Thu, Apr 2
Multiple Airlines Logo
8:55 am - 3:35 pm
LHR
-
BFS
6h 40m
1 stop
Multiple Airlines Logo
10:35 am - 6:30 pm
BFS
-
LHR
7h 55m
1 stop
$798Multiple Airlines
Sat, Apr 11 - Sat, Apr 18

momondo Fare Finder

 
Customize your flight search to find flights from London Heathrow Airport to Belfast Intl Airport that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated February 26, 2026.
Use the filters below to find and compare flights from London Heathrow Airport to Belfast Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonBelfast

LHR - BFS

LHRBFS

London Heathrow

Thu 4/23

8:50 am-1:00 pm

1 stop4h 10m

Belfast Intl

Mon 4/27

2:20 pm-6:00 pm

1 stop3h 40m

$363

LondonBelfast

LHR - BFS

LHRBFS

London Heathrow

Sat 4/18

8:55 am-3:35 pm

1 stop6h 40m

Belfast Intl

Fri 4/24

2:30 pm-9:45 pm

2 stops7h 15m

$415

LondonBelfast

LHR - BFS

LHRBFS

London Heathrow

Wed 4/8

12:00 pm-7:40 pm

2 stops7h 40m

Belfast Intl

Wed 4/15

9:35 am-8:05 pm

1 stop10h 30m

$417

LondonBelfast

LHR - BFS

LHRBFS

London Heathrow

Sat 4/11

7:40 am-2:50 pm

2 stops7h 10m

Belfast Intl

Sat 4/18

10:35 am-4:35 pm

1 stop6h 00m

$485

LondonBelfast

LHR - BFS

LHRBFS

London Heathrow

Fri 4/3

6:15 pm-9:40 pm

1 stop3h 25m

Belfast Intl

Sun 4/5

5:05 pm-9:00 pm

1 stop3h 55m

$507

LondonBelfast

LHR - BFS

LHRBFS

London Heathrow

Thu 3/26

7:00 am-3:25 pm

1 stop8h 25m

Belfast Intl

Thu 4/2

2:05 pm-8:20 pm

2 stops6h 15m

$587

LondonBelfast

LHR - BFS

LHRBFS

London Heathrow

Sat 4/11

8:55 am-3:35 pm

1 stop6h 40m

Belfast Intl

Sat 4/18

10:35 am-6:30 pm

1 stop7h 55m

$798

LondonBelfast

LHR - BFS

LHRBFS

London Heathrow

Thu 7/9

6:00 pm-10:20 pm

1 stop4h 20m

$115

LondonBelfast

LHR - BFS

LHRBFS

London Heathrow

Tue 6/30

12:05 pm-3:35 pm

1 stop3h 30m

$123

LondonBelfast

LHR - BFS

LHRBFS

London Heathrow

Mon 6/29

6:20 pm-9:50 pm

1 stop3h 30m

$128

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 17 resultsSorted by cheapest first
1
2

See travel insights to Belfast from

How to get the cheapest flight ticket from London Heathrow Airport to Belfast Intl Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between London Heathrow Airport and Belfast Intl Airport?

What is the cheapest month to fly to Belfast Intl Airport?

The month of March is, on average, the cheapest month to fly to Belfast Intl Airport from London Heathrow Airport, with most prices found around $141. If you’re not able to fly to Belfast Intl Airport in March, then November is your next best option. Flight prices from London Heathrow Airport to Belfast Intl Airport during November average around $152.

What is the cheapest day to depart on your flight to Belfast Intl Airport?

The cheapest day to depart on your flight to Belfast Intl Airport is on a Monday when prices can be found for as low as $74. This is often the case because there is less demand to fly during this day of the week. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from London Heathrow Airport to Belfast Intl Airport for around $128.

What is the cheapest time of day to depart on your flight to Belfast Intl Airport?

In the morning is the cheapest time of day to fly from London Heathrow Airport to Belfast Intl Airport when you can find flight prices for as low as $132. Flying to Belfast Intl Airport in the morning is an ideal time because this is during off-peak travel hours. In contrast, the most expensive time of day to depart to Belfast Intl Airport is at noon when prices are around $232.

How far in advance should I book a flight to Belfast Intl Airport?

You are more likely to see cheaper flights to Belfast Intl Airport from London Heathrow Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Belfast Intl Airport for around $184 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Belfast Intl Airport from London Heathrow Airport for as low as $131 on momondo.

How have London Heathrow Airport to Belfast Intl Airport flight prices changed over time?

As of February 2026, prices for London Heathrow Airport to Belfast Intl Airport flights are approximately 5% more expensive when compared to flights at the same time last year.

When to book flights from London Heathrow Airport to Belfast Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from London Heathrow Airport to Belfast Intl Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap London Heathrow Airport to Belfast Intl Airport (LHR to BFS) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London Heathrow Airport to Belfast Intl Airport

Fastest flight time

1h 20m

Direct flights

None
The fastest flight from London Heathrow Airport to Belfast Intl Airport takes 1h 20m
There are no direct flights from London Heathrow Airport to Belfast Intl Airport. There are no popular flight routes from London Heathrow Airport to Belfast Intl Airport.
Search flight deals

  • How far is London Heathrow to Belfast Intl by plane?

    The straight-line distance from London Heathrow to Belfast Intl is 324.6 mi. 1h 20m is a normal flight duration for this route.

  • When did momondo last update prices for flights from London Heathrow Airport to Belfast Intl Airport?

    Prices for flights from London Heathrow Airport to Belfast Intl Airport were last updated today.

  • How many operators does momondo search for flights from London Heathrow Airport to Belfast Intl Airport?

  • How old do you have to be to fly from London Heathrow Airport to Belfast Intl Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from London Heathrow Airport to Belfast Intl Airport.

  • What documentation or ID do you need to fly to Belfast Intl Airport?

    The required travel and health documents for your Belfast Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Belfast Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular airline from London Heathrow Airport to Belfast Intl Airport?

Best airlines flying from London Heathrow Airport to Belfast Intl Airport

Compare and see reviews for airlines that fly from London Heathrow Airport to Belfast Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
British AirwaysPriceFrom $125Free CancellationRating
6.7
7,768 reviews
Search British Airways flights

Traveling to a place near Belfast?

Book flights to Belfast if you plan to visit one of these locations
Armagh
Cookstown
Ballymena
Newry
Dungannon

Why use momondo?

Why should I use momondo to find a flight deal from London to Belfast?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from London to Belfast. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from London to Belfast with flexible booking policies on momondo?

Flights from London to Belfast with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from London to Belfast?

momondo provides multiple filters to help you find the best flight to Belfast from London. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from London to Belfast right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Belfast from London. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your Belfast Intl Airport trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Sat 3/28
Sat 4/4
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Belfast

Popular cities in the United Kingdom

Popular flights according to clicks in the last 7 days on momondo
Flights to London Heathrow Airportfrom $404
Flights to London Gatwick Airportfrom $352
Flights to London City Airportfrom $543
Flights to London Stansted Airportfrom $345
Flights to London Luton Airportfrom $348
Flights to Glasgow Intl Airportfrom $347
Flights to London Southend Airportfrom $518
Flights to Belfast City Airportfrom $518