Cheap flights from London Heathrow Airport to Dublin from £45
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 16/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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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
KLM flights from London Heathrow Airport to Dublin
Our best KLM 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 cheapest month to fly to Dublin?
In general, January is the cheapest month to fly from London Heathrow Airport to Dublin. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £103. If you aren’t able to travel to Dublin during the month of January, then flying in September is also cheap. Prices for this month can be found on momondo for an average of £104.
What is the cheapest day to depart on your flight to Dublin?
On average, the least expensive day to fly to Dublin from London Heathrow Airport is on a Saturday. momondo users have found tickets for Saturday departures for as low as £94. However, this price may fluctuate depending on the airline, the season, and holidays. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around £129. 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?
Flying to Dublin from London Heathrow Airport in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as £93 when looking at flights departing in the afternoon. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are £122 on average. Flights to Dublin from London Heathrow Airport in the morning 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 26 weeks ahead of your departure date. In general, you can expect to find flights to Dublin for around £117 when searching 26 weeks out.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 £86 on momondo.
What cabin class options are available on London Heathrow to Dublin flights?
There are 3 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.
What is the cheapest airline that flies from London Heathrow to Dublin?
British Airways, Aer Lingus, and Vueling are the most popular carriers operating from London Heathrow to Dublin
Which airlines fly to Dublin?
British Airways, Aer Lingus and Ryanair are the top three most popular airlines that fly to Dublin from London Heathrow Airport according to our data. British Airways is the first choice among our users, with 63% of people opting to fly with this airline when travelling to Dublin. Keep in mind that there are 3 different airlines that fly to Dublin on a routine basis, so you have a few additional options to choose from.
How many flights depart from London Heathrow Airport to Dublin on average per day?
As of June 2025, 48 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 41% of daily flights taking off in the afternoon.
How many flights depart from London Heathrow Airport to Dublin on average per week?
As of June 2025, 336 flights take off from London Heathrow Airport and land in Dublin each week. The most common flight departure day for this route is Tue, with 20% of weekly 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 276.5 mi apart from one another. 1h 10m 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 refresh daily.
How many operators does momondo search for flights from London Heathrow Airport to Dublin Airport?
The number of operators available for flights from London Heathrow Airport to Dublin Airport is 3 as of June 2025.
How old do you have to be to fly from London Heathrow Airport to Dublin Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. 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 necessary travel and health documents for your Dublin Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from London Heathrow Airport to Dublin?
Based on momondo bookings for flights between London Heathrow Airport and Dublin, the leading plane model is Boeing 787-9 Dreamliner, making up 10.69% of the total bookings. Other popular models include Boeing 777 with 9.72%, Airbus A320neo with 9.06%, and Boeing 777-300ER with 7.93%.
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 British Airways (63% of total bookings). The next most popular airlines are Aer Lingus (36%) and Ryanair (1%).
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 £26 | Free Cancellation | Rating 6.8 5,099 reviews | |||
| PriceFrom £62 | Free Cancellation | Rating 6.6 6,980 reviews | |||
| PriceFrom £96 | Free Cancellation | Rating 7.1 1,110 reviews |
Aer Lingus Flights From London Heathrow Airport to Dublin
Aer Lingus flies from London Heathrow Airport to Dublin around 89 times per week, with 1,110 momondo users rating the airline 7.1/10. The cheapest Aer Lingus deal from London Heathrow Airport to Dublin in the last 72 hours was £129 (round-trip), much lower than the average airfare cost of £182 for Aer Lingus flights on this route.
British Airways Flights From London Heathrow Airport to Dublin
£84 is the best British Airways flight deal from London Heathrow Airport to Dublin found on momondo over the last 72 hours. The average British Airways ticket price found was closer to £143, however, with flight time and availability significantly affecting the price. British Airways (6.6/10 from 6,982 user reviews) flies into Dublin from London Heathrow Airport 87 times in an average week so prices can vary.
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?
To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Dublin from London.
Can I find flights from London to Dublin with flexible booking policies on momondo?
Yes. momondo enables you to select and highlight flights to Dublin from London with this policy.
How can momondo help me find flights from London to Dublin?
momondo provides multiple filters to help you find the best flight to Dublin 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 Dublin right now. Can momondo alert me if prices change?
If you are not ready to book a flight from London to Dublin now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Dublin and let you know when they change.