Cheap flights from Dublin to London Heathrow Airport
DUB — LHR
16 Dec — 23 Dec1
Return
1 adult
Economy
Return
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Dublin to London Heathrow are usually found in January or October, booked 73 days in advance, depart on a Sunday or Friday and return on a Thursday
Cheap flight deals from Dublin to Heathrow
Discover tips and strategies to find the most affordable flight options for your journey from Dublin (DUB) to Heathrow (LHR). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 16 November 2025.
Popular in
November
Cheapest in
January
Average price
₹ 16,845
Good one-way deal
₹ 9,266 or less
Highest demand for flights based on searches. 2% potential increase in price (₹ 28,054 potential increase over avg. return price).
Best time to book a flight from Dublin to Heathrow
Have a flexible travel schedule? Discover the best time to fly to Heathrow from Dublin with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Dublin to London Heathrow Airport
Prices
Airlines
Delays
How far ahead should I book a flight from Dublin to London Heathrow Airport?
Use this chart to determine the optimal time to book a return flight from Dublin to Heathrow. Price data was last updated on 14 November 2025.
The best time to book flights from Dublin to London Heathrow Airport is 66 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
What is the cheapest month to book a flight from Dublin to London Heathrow Airport?
Currently, February is the cheapest month in which you can book a flight from Dublin to London Heathrow Airport (average of ₹ 7,625). Flying from Dublin to London Heathrow Airport in June is currently the most expensive (average of ₹ 9,841). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from DUB to LHR?
Find hourly flight availability from Dublin to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 16 November 2025.
Unlike in the evening, when flights are generally more expensive, you can save up to 9% on flights from Dublin to London Heathrow Airport by exploring options for tickets at midday.
What is the cheapest day to fly from Dublin to London Heathrow Airport?
Use this chart to determine the cheapest time to fly return from Dublin to Heathrow. Price data was last updated on 2 November 2025.
Travellers seeking maximum savings on their Dublin to London Heathrow Airport flight should consider departing on Thursday evenings when fares are most often at their lowest. Thursday at midday flights should be avoided if possible as fares are typically the most expensive at this time.
Weekly flight availability from Dublin to London Heathrow Airport
Explore weekly flight availability from Dublin to Heathrow. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 16 November 2025.
The most flights from DUB to LHR are scheduled on a Saturday (68 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (40 on average).
How often are flights from Dublin to London delayed?
About 17% of weekly flights between Dublin and London have experienced delays in the past year, with the average delay time being 97 minutes.
What is the most punctual flight time for Dublin to London flights?
Historically, flights departing at night are less likely to be delayed, whereas flights leaving in the early afternoon tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Tuesday tends to have the lowest number of delays on this route, whereas Sunday has historically faced a higher average of delays compared to other days of the week.
Which airline has the best punctuality record on Dublin to London flights?
Over the past year, Delta have had the lowest number of delays on this route, with no flights being classified as delayed.
Related info for your journey
Find useful and relevant information for your journey from Dublin to Heathrow. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
What airport do you fly from for flights from Dublin to London Heathrow?
For a flight from Dublin to London Heathrow, you will be flying from Dublin. Dublin (DUB) is just 9.2 km from the centre of the city. Dublin is the only Dublin airport and it handles 51 outbound flights to London Heathrow per day. 0 airlines have flights to London Heathrow from Dublin on a regular basis.
What are the most reliable airlines from Dublin to London Heathrow Airport?
The top 3 most reliable airlines when flying from Dublin to London Heathrow Airport are Air Canada (72%), Qatar Airways (70%) and British Airways (69%).
Can I find deals for flights from Dublin to Heathrow that include hotel bookings?
Yes. In addition to deals on Dublin to Heathrow flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Dublin to Heathrow?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dublin to Heathrow.
Can I find deals for business class flights from Dublin to Heathrow?
Yes. Cheapflights offers flight deals from Dublin to Heathrow by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Dublin to London Heathrow Airport?
Currently, February is the cheapest month in which you can book a flight from Dublin to London Heathrow Airport (average of ₹ 7,625). Flying from Dublin to London Heathrow Airport in June is currently the most expensive (average of ₹ 9,841). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
Explore flights to Heathrow departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 16 November 2025.
Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.
How does Cheapflights help users find flights from Dublin to Heathrow?
Cheapflights makes it easy to find Dublin to Heathrow flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.
Why should you use Cheapflights to find cheap flight tickets from Dublin to Heathrow?
It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Dublin to Heathrow.
Can Cheapflights find flights from Dublin to Heathrow with no change fees?
Cheapflights does show flights with no change fees to all users. To see these options for flights from Dublin to Heathrow, users can toggle the no change fees filter when performing a flight search.
Can Cheapflights notify me if prices for flights from Dublin to Heathrow become cheaper?
Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Heathrow from Dublin today and book when prices fit your budget.
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