Cheap flights from Ireland to London from €15
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 17/7. 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 Ireland to London
Recent return flight deals from Ireland to London
Recent one-way flight deals from Ireland to London
Recent last minute flight deals from Ireland to London
Recent direct flight deals from Ireland to London
Aer Lingus flights from Ireland to London
Our best Aer Lingus deals on Ireland to London flight tickets
British Airways flights from Ireland to London
Our best British Airways deals on Ireland to London flight tickets
See travel insights to London from
How to get the cheapest flight ticket from Ireland to London
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?
In general, January is the cheapest month to fly from Ireland to London. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around €61. If you are unable to visit London during the month of January, then departing from Ireland during the month November is also very affordable. Most momondo users find prices during this month for around €73.
What is the cheapest day to depart on your flight to London?
Our data shows that Friday is the least expensive day to fly to London. Tickets to fly out on this day can be as low as €290. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Ireland to London for around €650.
What is the cheapest time of day to depart on your flight to London?
The cheapest time of day to fly to London is in the evening when flights can be purchased for as low as €162. In contrast, the most expensive time of day to depart to London is in the afternoon when prices are around €745.
What is the cheapest Ireland to London flight route?
Fly from Dublin to London Stansted for the best Ireland - London flight prices
How far in advance should I book a flight to London?
You are more likely to see cheaper flights to London from Ireland when booking weeks ahead of your departure date. In general, you can expect to find flights to London for around €132 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London from Ireland for as low as €84 on momondo.
What cabin class options are available on Ireland to London flights?
There are 3 cabin classes available to choose from on Ireland to London 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 Ireland to London?
Ryanair is the most popular carrier operating from Ireland to London
Which airlines fly to London?
British Airways, Aer Lingus and Ryanair are the top three most popular airlines that fly to London from Ireland according to our data. British Airways is the first choice among our users, with 54% of people opting to fly with this airline when travelling to London. Keep in mind that there are 3 different airlines that fly to London on a routine basis, so you have a few additional options to choose from.
How many flights depart from Ireland to London on average per day?
As of July 2025, there are 99 flights per day flying from Ireland to London. The most common time of day flights depart is 07:00, with 44% of flights taking off at midday.
How many flights depart from Ireland to London on average per week?
The number of flights available between Ireland and London is 698 per week as of July 2025. The most frequent departure day is Mon, with 20% of weekly flights leaving on this day.
Cheap Ireland to London flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Ireland to London
When did momondo last update prices for flights from Ireland to London?
Prices for flights from Ireland to London were last updated today.
How many operators does momondo search for flights from Ireland to London?
The number of operators available for flights from Ireland to London is 3 as of July 2025.
How old do you have to be to fly from Ireland to London?
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.
What documentation or ID do you need to fly to London?
The required travel and health documents for your London 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. 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?
momondo data reveals that the most frequently booked plane model on the route from Ireland to London is Airbus A321neo, representing 21.92% of all bookings. The subsequent popular models are Airbus A320neo at 15.18%, Boeing 737 MAX 8 at 14.95%, and Boeing 737-800 Passenger/BBJ2 (winglets) at 14.10%.
Best airlines flying from Ireland to London
Compare and see reviews for airlines that fly from Ireland to London with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom €34 | Free Cancellation | Rating 6.1 105 reviews | |||
| PriceFrom €71 | Free Cancellation | Rating 6.6 7,086 reviews | |||
| PriceFrom €84 | Free Cancellation | Rating 7.1 1,141 reviews |
Travelling to a place near London?
Book flights to London if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from Ireland to London?
Finding the right flight to London from Ireland 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 London quick and easy, saving you time and money.
Can I find flights from Ireland to London with flexible booking policies on momondo?
Flights from Ireland to London 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 Ireland to London?
momondo provides multiple filters to help you find the best flight to London from Ireland. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.
I’m not ready to book a flight from Ireland to London right now. Can momondo alert me if prices change?
Price alerts on flights to London from Ireland 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.