Cheap flights from London to Ireland from £24
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 to Ireland departing on 26/6. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
Discover deals from 900+ travel sites with momondo.
Save money when you book flights with momondo
Big names, great deals
Big names, great deals
Search 100s of travel sites to compare prices.Filter for what you want
Filter for what you want
Free Wi-Fi? Stopover? Instantly customise your results.Trusted and free
Trusted and free
We’re completely free to use - no hidden charges or fees.Price Alerts
Price Alerts
Not ready to book? to track prices.Find the cheapest flights from London to Ireland
Cheap return flights
Cheap one-way flights
Cheap last-minute flights
Cheap direct flights
Ryanair flights from London to Ireland
Our best Ryanair deals on London to Ireland flight tickets
British Airways flights from London to Ireland
Our best British Airways deals on London to Ireland flight tickets
See travel insights to Ireland from
How to get the cheapest flight ticket from London 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 September is, on average, the cheapest month to fly to Ireland from London, with most prices found around £48. If you’re not able to fly to Ireland in September, then January is your next best option. Flight prices from London to Ireland during January average around £49.
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 Friday when prices can be found for as low as £191. This is often the case because there is less demand to fly during this day of the week. Flights from London to Ireland on a Monday will generally be more expensive and average around £519. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.
What is the cheapest time of day to depart on your flight to Ireland?
In the afternoon is the cheapest time of day to fly from London to Ireland when you can find flight prices for as low as £129. Flying to Ireland in the afternoon is an ideal time because this is during off-peak travel hours. Flights to Ireland are more costly in the morning, with an average ticket price of £505. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.
What is the cheapest London to Ireland flight route?
Fly from London Luton to Knock Intl for the best London - Ireland flight prices
How far in advance should I book a flight to Ireland?
You are more likely to see cheaper flights to Ireland from London when booking 21 weeks ahead of your departure date. In general, you can expect to find flights to Ireland for around £118 when searching 21 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Ireland from London for as low as £88 on momondo.
What cabin class options are available on London to Ireland flights?
There are 3 cabin classes available to choose from on London to Ireland 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 to Ireland?
Ryanair, Aer Lingus, and British Airways are the most popular carriers operating from London to Ireland
Which airlines fly to Ireland?
Ryanair, British Airways and Aer Lingus are the top three most popular airlines that fly to Ireland from London according to our data. Ryanair is the first choice among our users, with 66% of people opting to fly with this airline when travelling to Ireland. Keep in mind that there are 3 different airlines that fly to Ireland on a routine basis, so you have a few additional options to choose from.
How many flights depart from London to Ireland on average per day?
103 flights are operational daily from London to Ireland as of June 2025. The most popular departure time for this route is 09:00, with 39% of flights per day taking off at midday.
How many flights depart from London to Ireland on average per week?
The number of flights available between London and Ireland is 727 per week as of June 2025. The most frequent departure day is Thu, with 20% of weekly flights leaving on this day.
Cheap London to Ireland flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from London to Ireland
When did momondo last update prices for flights from London to Ireland?
Prices for flights from London to Ireland are refreshed on a daily basis.
How many operators does momondo search for flights from London to Ireland?
As of June 2025, there are 3 operators available to choose from for flights from London to Ireland.
How old do you have to be to fly from London to Ireland?
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 to Ireland.
What documentation or ID do you need to fly to Ireland?
The travel and health documents required for your trip to Ireland 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 license, and a passport valid for six-months after you plan to arrive at Ireland. 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 to Ireland?
momondo data reveals that the most frequently booked plane model on the route from London to Ireland is Boeing 737-800 Passenger/BBJ2 (winglets), representing 21.93% of all bookings. The subsequent popular models are Boeing 737 MAX 8 at 16.17%, Airbus A320neo at 13.47%, and Airbus A321neo at 5.69%.
Best airlines flying from London to Ireland
Compare and see reviews for airlines that fly from London to Ireland with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom £25 | Free Cancellation | Rating 6.8 5,121 reviews | |||
| PriceFrom £44 | Free Cancellation | Rating 6.6 7,011 reviews | |||
| PriceFrom £67 | Free Cancellation | Rating 7.1 1,118 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from London to Ireland?
It is quick and easy to find London to Ireland flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Ireland that suits you.
Can I find flights from London to Ireland with flexible booking policies on momondo?
Flights from London to Ireland with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.
How can momondo help me find flights from London to Ireland?
momondo helps you find the best flight between London and Ireland by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.
I’m not ready to book a flight from London to Ireland right now. Can momondo alert me if prices change?
If you are simply researching potential flights to Ireland, momondo offers a useful price alert feature which will track prices for flights to Ireland from London and alert you when they change.