Cheap Flights from Dublin to London Heathrow

Compare Dublin to London Heathrow flight deals

Find the cheapest month or even day of the year to fly to London Heathrow

Book the best London Heathrow fare with no extra fees

Flight deals from Dublin to London Heathrow

Looking for a cheap last-minute deal or the best return flight from Dublin to London Heathrow? Find the lowest prices on one-way and return tickets right here.

London.R 751 per passenger.Departing Mon, 8 Dec.One-way flight with Aer Lingus.Outbound direct flight with Aer Lingus departs from Dublin on Mon, 8 Dec, arriving in London Heathrow.Price includes taxes and charges.From R 751, select.

London.R 795 per passenger.Departing Thu, 30 Oct.One-way flight with Aer Lingus.Outbound direct flight with Aer Lingus departs from Dublin on Thu, 30 Oct, arriving in London Heathrow.Price includes taxes and charges.From R 795, select.

London.R 895 per passenger.Departing Sat, 15 Nov.One-way flight with Aer Lingus.Outbound direct flight with Aer Lingus departs from Dublin on Sat, 15 Nov, arriving in London Heathrow.Price includes taxes and charges.From R 895, select.

London.R 917 per passenger.Departing Tue, 6 Jan.One-way flight with Aer Lingus.Outbound direct flight with Aer Lingus departs from Dublin on Tue, 6 Jan, arriving in London Heathrow.Price includes taxes and charges.From R 917, select.

London.R 937 per passenger.Departing Thu, 5 Feb.One-way flight with British Airways.Outbound direct flight with British Airways departs from Dublin on Thu, 5 Feb, arriving in London Heathrow.Price includes taxes and charges.From R 937, select.

London.R 937 per passenger.Departing Tue, 3 Mar.One-way flight with British Airways.Outbound direct flight with British Airways departs from Dublin on Tue, 3 Mar, arriving in London Heathrow.Price includes taxes and charges.From R 937, select.

London.R 990 per passenger.Departing Tue, 7 Jul.One-way flight with British Airways.Outbound direct flight with British Airways departs from Dublin on Tue, 7 Jul, arriving in London Heathrow.Price includes taxes and charges.From R 990, select.

London.R 1,113 per passenger.Departing Wed, 20 May.One-way flight with British Airways.Outbound direct flight with British Airways departs from Dublin on Wed, 20 May, arriving in London Heathrow.Price includes taxes and charges.From R 1,113, select.

Find the cheapest month to fly from Dublin to London Heathrow

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Dublin to London Heathrow flights are currently cheapest in December.

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Direct flights from Dublin to London Heathrow

Dublin to London Heathrow: Alternative routes

Compare routes from Dublin to London below. You may find an airport to fly into that's cheaper, faster, or easier than London Heathrow.

Dublin to London: Flight information

The things to know before you go.

Cheapest flight found	R 751
Cheapest month to fly	December
Average flight time	1 hr, 26 mins
Most popular airline	Aer Lingus
Average flights per week	334

Finding cheap flights from Dublin to London Heathrow: Frequently asked questions

How much are return flights from Dublin to London Heathrow?

The best price we found for a return flight from Dublin to London Heathrow is R 1,670. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.

How long does it take to fly from Dublin to London Heathrow?

1 hour and 26 minutes is the average flight time from Dublin to London Heathrow.

Which airlines fly direct from Dublin to London Heathrow?

Aer Lingus, British Airways and Qatar Airways fly direct from Dublin to London Heathrow.

How many flights are there a week from Dublin to London Heathrow?

As of September 2025, there are 334 flights per week flying from Dublin to London Heathrow.

When is the cheapest time to fly from Dublin to London Heathrow?

The cheapest month to fly from Dublin to London Heathrow is usually November.

Which upcoming date is cheapest to fly from Dublin Airport to London Heathrow Airport on?

After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Dublin Airport to London Heathrow Airport on Friday, 28 November 2025.

Can I get a direct flight from Dublin Airport to London Heathrow Airport?

Yes – the average flight time is 1 hour and 26 minutes.

How can I find the best flight deal to London Heathrow?

We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to London Heathrow but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

When is the best time to book flights to London?

We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to London is around 40 days in advance, so don’t leave your flight to the last minute.

Which is the cheapest airline to fly from Dublin Airport to London Heathrow with?

Currently, British Airways offers the cheapest flight tickets to London Heathrow.

Flying from Dublin Airport (DUB) to London Heathrow Airport (LHR): what you need to know

Around 1 hour 25 minutes is how long you'll be travelling on a direct flight from Dublin Airport to London Heathrow Airport.
London's timezone is UTC+0, which is the same as Dublin.
Each week, there are 350 Dublin Airport to London Heathrow Airport flights. If you'd like to be on board early, select the 06:30 Aer Lingus flight. If you're eager to make the most of your time before you fly, the last flight is at 21:10 with British Airways.
Your DUB to LHR flight won't wait if you're running late, so don't forget to check in on time. Arrive up to one hour in advance for domestic flights and two hours ahead when you're flying internationally.
Travelling during a peak month like August? Public holidays and other popular periods can lead to longer lines at security. Be extra cautious and arrive up to four hours ahead of international flights and two hours before domestic departures.
British Airways has direct flights from Dublin Airport to London Heathrow Airport. Book with this popular airline, then get ready to see the sights in London — and maybe even more of United Kingdom if your schedule allows.
British Airways is the airline with the highest passenger demand for this route.
The carrier with the top on-time arrival rate for DUB to LHR flights is Aer Lingus.
We make it a piece of cake to book a flight with a stopover. To see all your options for tickets from Dublin Airport to London Heathrow Airport, uncheck 'Direct flights only.' Then, choose a flight with a stop long enough to tour the city of your choice. Popular stopovers between DUB and LHR include:
- Manchester Airport
- Glasgow International Airport
- Newcastle International Airport

How to find the cheapest flights from Dublin Airport (DUB) to London Heathrow Airport (LHR)

Currently, R 751 is the cheapest price we've found for a one-way Dublin Airport to London Heathrow Airport flight. The best price for a return ticket is R 1,670. Remember that fares could change due to demand when booking.
Get cheap tickets from DUB to LHR by booking one month ahead. Based on our research, that's the sweet spot for finding a bargain.
The cheapest month for flights from Dublin Airport to London Heathrow Airport is December. Use the 'Whole month' tool to find the lowest airfares if you have a flexible schedule.
Getting your hands on cheap flights from DUB to LHR is a cinch with Price Alerts. Simply set up one of these automatic alerts and we'll notify you when fares go down.
Choose your preferred arrival and departure times, airlines and number of stops with the filters. Alternatively, sort your results by 'Cheapest' to see the best deals on flights from Dublin Airport to London Heathrow Airport.

Handy information about Dublin Airport (DUB)

Of all flights leaving Dublin Airport, 72.87% land on time at their destination.
Central Dublin to Dublin Airport is approximately 21 kilometres. Depending on traffic, it'll take about 30 minutes to get there if you're driving, ride-sharing or catching a cab.
Planning to catch public transport? You can expect a journey time of around 2 hours 10 minutes.
Need a convenient hotel near DUB? If you've booked an early flight from Dublin Airport to London Heathrow Airport, these accommodation options will have you moments from your departure lounge:

Arriving at London Heathrow Airport (LHR)

The last thing you need is a long journey to your hotel if you're arriving on a late Dublin Airport to London Heathrow Airport flight. Book one of these accommodation options near LHR instead:
Fast-track your adventure by picking up a London Heathrow Airport rental car. Grab your wheels from Surprice, U-Save or Green Motion and experience the lesser-explored corners of London and beyond.
Get the best deal by reserving your vehicle from London Heathrow Airport about one week in advance of your trip.

Getting from London Heathrow Airport (LHR) to central London

London Heathrow Airport to the centre of London has a drive time of around 55 minutes. It's approximately 31 kilometres away.
When travelling by public transport, expect a journey time of roughly 1 hour.

When to fly to London Heathrow Airport (LHR)

July is the busiest month for flights from Dublin Airport to London Heathrow Airport. To skip the crowds, go to London in February.
The warmest month in London is July, with the temperature ranging between 11ºC (52ºF) and 26ºC (79ºF). Book your flights from Dublin Airport to London Heathrow Airport in this month if you like this kind of weather.
January has average temperatures of between 0ºC (32ºF) and 9ºC (48ºF). Look for cheap tickets from DUB to LHR around that time if you like travelling in cooler conditions.

Explore more of United Kingdom

Birmingham is just one of the many cities in United Kingdom waiting to be discovered once you've seen London. Around 161 kilometres away to the north-west, well-known attractions include Cadbury World, The Library of Birmingham and National Sea Life Centre.
If you're looking to explore another major stop in United Kingdom, head for Bristol, about 177 kilometres west of London. Clifton Suspension Bridge, Cabot Tower and Brandon Hill Nature Park are among the biggest draws.