Cheap flights from London Heathrow Airport to Ireland from €48
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 Ireland departing on 25/11. 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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Not ready to book? to track prices.British Airways flights from London Heathrow Airport to Ireland
Our best British Airways deals on London Heathrow Airport to Ireland flight tickets
Aer Lingus flights from London Heathrow Airport to Ireland
Our best Aer Lingus deals on London Heathrow Airport to Ireland flight tickets
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Fly from
Fly to
Route
Depart
Return
LondonDublin
LHR London Heathrow - DUB Dublin
LHRDUB
London Heathrow
Sat 21/11
06:30-07:50
Nonstop1h 20m
Dublin
Sat 21/11
15:10-16:35
Nonstop1h 25m
LondonDublin
LHR London Heathrow - DUB Dublin
LHRDUB
London Heathrow
Sat 9/1
10:35-12:05
Nonstop1h 30m
Dublin
Sun 10/1
18:35-19:55
Nonstop1h 20m
LondonDublin
LHR London Heathrow - DUB Dublin
LHRDUB
London Heathrow
Tue 5/1
20:45-22:05
Nonstop1h 20m
Dublin
Tue 12/1
16:20-17:45
Nonstop1h 25m
LondonDublin
LHR London Heathrow - DUB Dublin
LHRDUB
London Heathrow
Tue 5/1
20:45-22:05
Nonstop1h 20m
Dublin
Wed 6/1
10:30-12:00
Nonstop1h 30m
LondonDublin
LHR London Heathrow - DUB Dublin
LHRDUB
London Heathrow
Tue 5/1
20:45-22:05
Nonstop1h 20m
Dublin
Sat 9/1
17:55-19:15
Nonstop1h 20m
LondonDublin
LHR London Heathrow - DUB Dublin
LHRDUB
London Heathrow
Sat 7/11
16:20-17:45
Nonstop1h 25m
Dublin
Mon 23/11
20:40-22:00
Nonstop1h 20m
LondonDublin
LHR London Heathrow - DUB Dublin
LHRDUB
London Heathrow
Mon 4/1
12:45-14:15
Nonstop1h 30m
Dublin
Mon 11/1
20:40-22:00
Nonstop1h 20m
LondonDublin
LHR London Heathrow - DUB Dublin
LHRDUB
London Heathrow
Tue 2/2
14:15-15:40
Nonstop1h 25m
Dublin
Tue 9/2
20:40-22:00
Nonstop1h 20m
LondonDublin
LHR London Heathrow - DUB Dublin
LHRDUB
London Heathrow
Tue 5/1
20:45-22:05
Nonstop1h 20m
Dublin
Tue 19/1
20:40-22:00
Nonstop1h 20m
LondonDublin
LHR London Heathrow - DUB Dublin
LHRDUB
London Heathrow
Sat 7/11
16:20-17:45
Nonstop1h 25m
Dublin
Tue 10/11
20:40-22:00
Nonstop1h 20m
See travel insights to Ireland from
How to get the cheapest flight ticket from London Heathrow Airport to Ireland
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 Ireland?
The month of February is another great option to travel to Ireland, with average flight prices from London Heathrow Airport averaging around €150.
What is the cheapest day to depart on your flight to Ireland?
The cheapest day to depart on your flight to Ireland is on a Thursday when prices can be found for as low as €111. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Friday because tickets tend to average around €299. These prices are subject to change though, so be sure to set up a Price Alert for flights to Ireland.
What is the cheapest time of day to depart on your flight to Ireland?
In the evening is the cheapest time of day to fly from London Heathrow Airport to Ireland when you can find flight prices for as low as €167. Flying to Ireland in the evening is an ideal time because this is during off-peak travel hours. In contrast, the most expensive time of day to depart to Ireland is in the afternoon when prices are around €280.
What is the cheapest London Heathrow to Ireland flight route?
Fly from London Heathrow to Dublin for the best London Heathrow - Ireland flight prices
How far in advance should I book a flight from London Heathrow Airport to Ireland?
You are more likely to see cheaper flights to Ireland from London Heathrow Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Ireland for around €159 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Ireland from London Heathrow Airport for as low as €113 on momondo.
What cabin class options are available on London Heathrow Airport to Ireland flights?
There is only 1 cabin class available to choose from on London Heathrow Airport to Ireland flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
How often are flights from London to Ireland delayed?
Historically, on average around 13% of flights between London and Ireland have experienced a delay on any given week. The average delay length over the past 12 months has been 105 minutes.
What is the most punctual flight time for London to Ireland flights?
Generally, flights departing at night tend to experience fewer delays. Flights departing in the early afternoon have, in the past, seen delays more frequently in comparison.
What day of the week experiences the fewest flight delays on this route?
Tuesday is statistically the day of the week that experiences the fewest delays on this flight route. Thursday has historically seen more delays on average compared to the rest of the week.
Which airline has the best punctuality record on London to Ireland flights?
According to our data, Aer Lingus have had the fewest delays on this route over the last 12 months, with about 12% of their flights experiencing any sort of delay.
How many flights depart from London Heathrow Airport to Ireland on average per day?
As of October 2026, 87 flights take off from London Heathrow Airport and land in Ireland each day. The most common flight departure time for this route is 09:00, with 38% of daily flights taking off at midday.
How many flights depart from London Heathrow Airport to Ireland on average per week?
613 flights are operational weekly from London Heathrow Airport to Ireland as of October 2026. The most popular departure day for this route is Thu, with 19% of flights per week taking off on this day.
Cheap London Heathrow Airport to Ireland flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from London Heathrow Airport to Ireland
Frequently asked questions about flying from London Heathrow Airport to Ireland
When did momondo last update prices for flights from London Heathrow Airport to Ireland?
Prices for flights from London Heathrow Airport to Ireland are refreshed on a daily basis.
How many operators does momondo search for flights from London Heathrow Airport to Ireland?
As of October 2026, there is 1 operator available to choose from for flights from London Heathrow Airport to Ireland.
How old do you have to be to fly from London Heathrow Airport to Ireland?
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 Ireland.
What documentation or ID do you need to fly to Ireland?
The necessary travel and health documents for your Ireland 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 licence 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 Ireland?
Based on momondo bookings for flights between London Heathrow Airport and Ireland, the leading plane model is Boeing 777, making up 13.32% of the total bookings. Other popular models include Airbus A320neo with 10.74%, Boeing 787-9 Dreamliner with 10.50%, and Airbus A350-1000 with 8.55%.
Best airlines flying from London Heathrow Airport to Ireland
Compare and see reviews for airlines that fly from London Heathrow Airport to Ireland with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom €109 | Free Cancellation | Rating 6.7 8,256 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from London to Ireland?
We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from London to Ireland for you.
Can I find flights from London to Ireland with flexible booking policies on momondo?
Yes. All flights to Ireland 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 Ireland?
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 Ireland.
I’m not ready to book a flight from London to Ireland right now. Can momondo alert me if prices change?
Price alerts on flights to Ireland from London are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.