Cheap flights from London to Dublin from $21
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 Dublin departing on 8/26. 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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Ryanair flights from London to Dublin
Our best Ryanair deals on London to Dublin flight tickets
Aer Lingus flights from London to Dublin
Our best Aer Lingus deals on London to Dublin flight tickets
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How to get the cheapest flight ticket from London 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, September is the cheapest month to fly from London to Dublin. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $65. If you’re not able to fly to Dublin in September, then January is your next best option. Flight prices from London to Dublin during January average around $67.
What is the cheapest day to depart on your flight to Dublin?
The cheapest day to depart from London to Dublin is on a Wednesday. Travelers who choose to depart for Dublin on a Wednesday will often find tickets for as low as $134. Flights from London to Dublin on a Sunday will generally be more expensive and average around $175. 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 Dublin?
In the evening is the cheapest time of day to fly from London to Dublin when you can find flight prices for as low as $130. Flying to Dublin in the evening is an ideal time because this is during off-peak travel hours. Flights in the morning are often more expensive with an average ticket price of $196.
What is the cheapest London to Dublin flight route?
Fly from London Luton to Dublin for the best London - 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 when booking 21 weeks ahead of your departure date. In general, you can expect to find flights to Dublin for around $161 when searching 21 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Dublin from London for as low as $120 on momondo.
What cabin class options are available on London to Dublin flights?
There are 3 cabin classes available to choose from on London 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 to Dublin?
Ryanair, British Airways, and Vueling are the most popular carriers operating from London to Dublin
What airlines fly to Dublin?
Ryanair, British Airways and Aer Lingus are the top three most popular airlines that fly to Dublin from London according to our data. Ryanair is the first choice among our users, with 40% of people opting to fly with this airline when traveling 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 to Dublin on average per day?
50 flights are operational daily from London to Dublin as of June 2025. The most popular departure time for this route is 8:00AM, with 41% of flights per day taking off in the afternoon.
How many flights depart from London to Dublin on average per week?
352 flights are operational weekly from London to Dublin as of June 2025. The most popular departure day for this route is Thu, with 23% of flights per week taking off on this day.
When to book flights from London to Dublin
Cheap London to Dublin (LON to DUB) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from London to Dublin
How far is London to Dublin by plane?
There are 287.9 mi between London and Dublin. 1h 10m is a normal flight duration for this route.
When did momondo last update prices for flights from London to Dublin Airport?
Prices for flights from London to Dublin Airport refresh daily.
How many operators does momondo search for flights from London to Dublin Airport?
As of June 2025, there are 3 operators available to choose from for flights from London to Dublin Airport.
How old do you have to be to fly from London 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 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 to Dublin?
Based on momondo bookings for flights between London and Dublin, the leading plane model is Boeing 737-800 Passenger/BBJ2 (winglets), making up 20.74% of the total bookings. Other popular models include Boeing 737 MAX 8 with 15.16%, Airbus A320neo with 10.52%, and Boeing 787-9 Dreamliner with 6.13%.
What is the most popular airline from London to Dublin?
momondo data reveals that the most frequently booked airline on the route from London to Dublin is Ryanair, representing 73% of all bookings. The subsequent popular airlines are British Airways at 17% and Aer Lingus at 11%.
Best airlines flying from London to Dublin
Compare and see reviews for airlines that fly from London to Dublin with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $37 | Free Cancellation | Rating 6.8 5,121 reviews | |||
| PriceFrom $85 | Free Cancellation | Rating 6.6 7,008 reviews | |||
| PriceFrom $134 | Free Cancellation | Rating 7.1 1,117 reviews |
Aer Lingus Flights From London to Dublin
Aer Lingus is one of the most popular airlines flying from London to Dublin, operating 113 flights/week on average for this route. A good Aer Lingus flight deal for London to Dublin starts from $134 round-trip, up to an average price of $189. Our users have rated Aer Lingus at 7.1/10.
Ryanair Flights From London to Dublin
Ryanair (6.8/10 from 5,121 reviews) operates around 37 flights from London to Dublin in any given week. The average Ryanair airfare for this route is around $76, with deals from around $37 rare but found on momondo. Referenced prices are for round-trip London to Dublin flight searches in the last 72 hours.
Traveling 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?
momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from London to Dublin. Millions of users trust and use momondo every year so you are in good hands.
Can I find flights from London to Dublin with flexible booking policies on momondo?
Flights from London to Dublin 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 Dublin?
Once all potential London to Dublin flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.
I’m not ready to book a flight from London to Dublin right now. Can momondo alert me if prices change?
Yes momondo offers price alerts on flights to Dublin from London. 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.