Cheap flights from Ireland to London from €36
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ireland to London departing on 13/8. 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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Aer Lingus flights from Ireland to London Heathrow Airport
Our best Aer Lingus deals on Ireland to London Heathrow Airport flight tickets
British Airways flights from Ireland to London Heathrow Airport
Our best British Airways deals on Ireland to London Heathrow Airport flight tickets
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How to get the cheapest flight ticket from Ireland to London Heathrow 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 cheapest month to fly to London Heathrow Airport?
The month of September is another great option to travel to London Heathrow Airport, with average flight prices from Ireland averaging around €115.
What is the cheapest day to depart on your flight to London Heathrow Airport?
The cheapest day to depart on your flight to London Heathrow Airport is on a Friday when prices can be found for as low as €461. This is often the case because there is less demand to fly during this day of the week. On the other hand, Sunday is the most expensive day to depart from Ireland because it is more convenient for both business and leisure travellers. As a result, prices tend to be around €664.
What is the cheapest time of day to depart on your flight to London Heathrow Airport?
According to our data, the cheapest time of day to fly to London Heathrow Airport is in the evening. momondo users have found flights departing from Ireland to London Heathrow Airport in the evening for as low as €158. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are €757 on average. Flights to London Heathrow Airport from Ireland in the afternoon are generally more expensive because this time of day is more convenient for travellers’ schedules.
What is the cheapest Ireland to London Heathrow flight route?
Fly from Shannon to London Heathrow for the best Ireland - London Heathrow flight prices
How far in advance should I book a flight to London Heathrow Airport?
You are more likely to see cheaper flights to London Heathrow Airport from Ireland when booking weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around €133 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London Heathrow Airport from Ireland for as low as €84 on momondo.
What cabin class options are available on Ireland to London Heathrow flights?
There are 3 cabin classes available to choose from on Ireland to London Heathrow 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 Ireland to London Heathrow Airport on average per day?
As of June 2025, there are 91 flights per day flying from Ireland to London Heathrow Airport. The most common time of day flights depart is 07:00, with 46% of flights taking off at midday.
How many flights depart from Ireland to London Heathrow Airport on average per week?
The number of flights available between Ireland and London Heathrow Airport is 638 per week as of June 2025. The most frequent departure day is Fri, with 16% of weekly flights leaving on this day.
Cheap Ireland to London Heathrow Airport flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Ireland to London Heathrow Airport
When did momondo last update prices for flights from Ireland to London Heathrow Airport?
Prices for flights from Ireland to London Heathrow Airport were last updated today.
How many operators does momondo search for flights from Ireland to London Heathrow Airport?
The number of operators available for flights from Ireland to London Heathrow Airport is 2 as of June 2025.
How old do you have to be to fly from Ireland to London Heathrow Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and stopovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Ireland to London Heathrow Airport.
What documentation or ID do you need to fly to London Heathrow Airport?
The required travel and health documents for your London Heathrow 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 licence and a passport valid for six months after your intended arrival at London Heathrow Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from Ireland to London Heathrow Airport?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Ireland to London Heathrow Airport is Airbus A321neo (28.97% of total bookings). The next most popular plane models are Airbus A320neo (14.98%), Boeing 787-9 Dreamliner (12.65%), and Boeing 737 MAX 8 (8.76%).
Best airlines flying from Ireland to London Heathrow Airport
Compare and see reviews for airlines that fly from Ireland to London Heathrow Airport with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom €72 | Free Cancellation | Rating 6.6 7,081 reviews | |||
| PriceFrom €85 | Free Cancellation | Rating 7.1 1,140 reviews |
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Why should I use momondo to find a flight deal from Ireland to London?
momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Ireland to London . Millions of users trust and use momondo every year so you are in good hands.
Can I find flights from Ireland to London with flexible booking policies on momondo?
Yes. All flights to London from Ireland on momondo can be compared and filtered by various policies on offer, including flexible booking.
How can momondo help me find flights from Ireland to London?
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 Ireland to London.
I’m not ready to book a flight from Ireland to London right now. Can momondo alert me if prices change?
Yes momondo offers price alerts on flights to London from Ireland. 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.