Cheap flights from London Heathrow Airport to Dublin from €51
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 Dublin departing on 20/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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British Airways flights from London Heathrow Airport to Dublin
Our best British Airways deals on London Heathrow Airport to Dublin flight tickets
Aer Lingus flights from London Heathrow Airport to Dublin
Our best Aer Lingus deals on London Heathrow Airport to Dublin flight tickets
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How to get the cheapest flight ticket from London Heathrow Airport to Dublin
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 Dublin?
What is the cheapest month to fly to Dublin?
If you aren’t able to travel during the month of January, then book flights to Dublin from London Heathrow Airport during September instead. Flights to Dublin in September, while not as cheap as those in January, still average around €123.
What is the cheapest day to depart on your flight to Dublin?
Our data shows that Wednesday is the least expensive day to fly to Dublin. Tickets to fly out on this day can be as low as €127. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around €164. These prices are subject to change though, so be sure to set up a Price Alert for flights to Dublin.
What is the cheapest time of day to depart on your flight to Dublin?
Our data shows that the cheapest London Heathrow Airport to Dublin flights are usually those with departure times in the afternoon. Our users have found flights to Dublin in the afternoon for as low as €143. If you have a flexible travel schedule, then try to avoid flying at midday when prices are €180 on average. Flights to Dublin from London Heathrow Airport at midday are generally more expensive because this time of day is more convenient for travellers’ schedules.
What is the cheapest London Heathrow to Dublin flight route?
Fly from London Heathrow to Dublin for the best London Heathrow - Dublin flight prices
How far in advance should I book a flight to Dublin?
You are more likely to see cheaper flights to Dublin from London Heathrow Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Dublin for around €138 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Dublin from London Heathrow Airport for as low as €104 on momondo.
What cabin class options are available on London Heathrow to Dublin flights?
There are 2 cabin classes available to choose from on London Heathrow to Dublin flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
How many flights depart from London Heathrow Airport to Dublin on average per day?
As of July 2025, 45 flights take off from London Heathrow Airport and land in Dublin each day. The most common flight departure time for this route is 08:00, with 40% of daily flights taking off in the afternoon.
How many flights depart from London Heathrow Airport to Dublin on average per week?
As of July 2025, there are 320 flights per week flying from London Heathrow Airport to Dublin. The most common day of the week flights depart is Thu, with 24% of flights taking off on this day.
When to book flights from London Heathrow Airport to Dublin
Cheap London Heathrow Airport to Dublin (LHR to DUB) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from London Heathrow Airport to Dublin
How far is London Heathrow to Dublin by plane?
London Heathrow and Dublin are 445.0 km apart from one another. 1h 20m is a normal flight duration for this route.
When did momondo last update prices for flights from London Heathrow Airport to Dublin Airport?
Prices for flights from London Heathrow Airport to Dublin Airport are updated daily.
How many operators does momondo search for flights from London Heathrow Airport to Dublin Airport?
There are 2 operators available for flights from London Heathrow Airport to Dublin Airport as of July 2025.
How old do you have to be to fly from London Heathrow Airport to Dublin Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and stopovers. It is recommended that you verify with the airline you are booking with for travel from London Heathrow Airport to Dublin Airport.
What documentation or ID do you need to fly to Dublin Airport?
The travel and health documents required for your trip to Dublin Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s licence, and a passport valid for six-months after you plan to arrive at Dublin Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from London Heathrow Airport to Dublin?
momondo data reveals that the most frequently booked plane model on the route from London Heathrow Airport to Dublin is Boeing 787-9 Dreamliner, representing 11.87% of all bookings. The subsequent popular models are Boeing 777-300ER at 8.97%, Airbus A320neo at 8.89%, and Boeing 777 at 8.60%.
What is the most popular airline from London Heathrow Airport to Dublin?
Based on momondo bookings for this flight route, the most popular airline on flight routes from London Heathrow Airport to Dublin is Aer Lingus (61% of total bookings). The next most popular airline is British Airways (39%).
Best airlines flying from London Heathrow Airport to Dublin
Compare and see reviews for airlines that fly from London Heathrow Airport to Dublin with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom €78 | Free Cancellation | Rating 6.6 7,103 reviews | |||
| PriceFrom €143 | Free Cancellation | Rating 7.1 1,151 reviews |
Aer Lingus Flights From London Heathrow Airport to Dublin
The lowest priced Aer Lingus flight from London Heathrow Airport to Dublin from the last 72 hours was €168. Generally, Aer Lingus has 89 flights on this route every week with an average price of €170. Aer Lingus is rated 7.1/10 by our users.
British Airways Flights From London Heathrow Airport to Dublin
British Airways is also a popular choice for this route. British Airways flight deals for London Heathrow Airport to Dublin start from as low as €91 round-trip, depending on your selected dates, with average British Airways deals seen on momondo around €145. British Airways operates 91 flights to Dublin from London Heathrow Airport in an average week. Users have rated it 6.6/10 across 7,103 reviews.
Travelling to a place near Dublin?
Book flights to Dublin if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from London to Dublin?
Finding the right flight to Dublin from London is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Dublin quick and easy, saving you time and money.
Can I find flights from London to Dublin with flexible booking policies on momondo?
Yes. All flights to Dublin from London on momondo can be compared and filtered by various policies on offer, including flexible booking.
How can momondo help me find flights from London to Dublin?
momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from London to Dublin.
I’m not ready to book a flight from London to Dublin right now. Can momondo alert me if prices change?
Yes momondo offers price alerts on flights to Dublin 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.