Question 1

What is the cheapest airline to fly from Dublin to London Heathrow Airport round-trip?

Accepted Answer

Flying on British Airways is currently your cheapest option to London Heathrow Airport, with prices starting at £70. Users have found that British Airways is 39% cheaper than the other options available to this destination.

Question 2

What are the cheapest airlines to fly from Dublin to London Heathrow Airport one-way?

Accepted Answer

The cheapest airline one-way is British Airways, with whom users have recently found tickets for as low as £32. However, be on the lookout for offers from Aer Lingus and Scandinavian Airlines, as they are both options that can get you from Dublin to London Heathrow Airport for a low price.

Question 3

How far ahead should I book a flight from Dublin to London Heathrow Airport?

Accepted Answer

Booking 48 days in advance of your planned departure date is, on average, the best time to get cheap flights from Dublin to London Heathrow Airport. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

Question 4

What is the cheapest month to book a flight from Dublin to London Heathrow Airport?

Accepted Answer

Currently, January is the cheapest month in which you can book a flight from Dublin to London Heathrow Airport (average of £112). Flying from Dublin to London Heathrow Airport in August is currently the most expensive (average of £164). 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.

Question 5

What is the cheapest day to fly from Dublin to London Heathrow Airport?

Accepted Answer

Travellers seeking maximum savings on their Dublin to London Heathrow Airport flight should consider departing on Friday evenings when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Question 6

Weekly flight availability from Dublin to London Heathrow Airport

Accepted Answer

The most flights from DUB to LHR are scheduled on a Thursday (82 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (38 on average).

Question 7

E

Accepted Answer

In terms of precipitation, rainfall in London Heathrow Airport ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London Heathrow Airport when rainfall is around 40.0 mm.

Question 8

E

Accepted Answer

If weather is an important factor for your trip to London Heathrow Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

Question 9

What are the cheapest flights from Dublin to London Heathrow Airport?

Accepted Answer

While on average a flight from Dublin to London Heathrow Airport is generally £1,244, our data shows the cheapest flight currently is £53. When looking at the most popular route, (Dublin - London Heathrow), you can expect to pay £70 for that flight.

Question 10

What are the most reliable airlines from Dublin to London Heathrow Airport?

Accepted Answer

The top 3 most reliable airlines when flying from Dublin to London Heathrow Airport are Air Canada (81%), British Airways (79%) and Aer Lingus (78%).

Question 11

What is the cheapest day to fly round-trip from Dublin to London Heathrow Airport?

Accepted Answer

Users have found that leaving on a Thursday can be a cost-effective option. It’s possible to save up to 28% on your flight compared to booking on days when demand is much higher.

Question 12

How far in advance should I book a flight from Dublin to London Heathrow Airport?

Accepted Answer

Find a great deal and save up to 235% by booking at least 57 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from Dublin to London Heathrow Airport within the next two weeks, with the cheapest ticket starting at £92.

Question 13

What is the cheapest month to fly from Dublin to London Heathrow Airport?

Accepted Answer

Flights from Dublin to London Heathrow Airport lean towards being more expensive in June. Prices are generally better when you fly from Dublin to London Heathrow Airport in January, with the cheapest ticket starting at £24.

Question 14

What is the cheapest time of day to fly from DUB to LHR?

Accepted Answer

One of the essential ways to save on airfare from Dublin to London Heathrow Airport is to remain as flexible as possible. Flights that are in the afternoon tend to be the most expensive. A flight in the evening could potentially save you up to 74% on airfare.

Question 15

What airport do you fly from for flights from Dublin to London Heathrow?

Accepted Answer

Located just 5.7 mi from the city center, Dublin is the airport most travelers will use when flying to London Heathrow from Dublin. Booking flights from Dublin (DUB) to London Heathrow should be relatively easy as there are 57 daily outbound flights to London Heathrow from 2 different airlines.

Question 16

Can I find deals for flights from Dublin to Heathrow that include hotel bookings?

Accepted Answer

Yes. In addition to deals on Dublin to Heathrow flights, Cheapflights offers holiday packages that include both flights and hotel.

Question 17

How can I find direct flights from Dublin to Heathrow?

Accepted Answer

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dublin to Heathrow.

Question 18

Can I find deals for business class flights from Dublin to Heathrow?

Accepted Answer

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.

Question 19

How does Cheapflights help users find flights from Dublin to Heathrow?

Accepted Answer

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.

Question 20

Why should you use Cheapflights to find cheap flight tickets from Dublin to Heathrow?

Accepted Answer

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Heathrow from Dublin.

Question 21

Can Cheapflights find flights from Dublin to Heathrow with no change fees?

Accepted Answer

Users can book flights with no change fees policies with our dedicated filters. Book flights from Dublin to Heathrow flexibly with Cheapflights today.

Question 22

Can Cheapflights notify me if prices for flights from Dublin to Heathrow become cheaper?

Accepted Answer

Yes! Start tracking prices for Dublin to Heathrow flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

Round-trip from	£70
One-way from	£32
Popular in	June
Cheapest in	January
Average price	£117
Good round-trip deal	£374 or less
Good one-way deal	£79 or less

Airline	Cheapest	Average	Flexibility	On-time
British Airways	Cheapest£56	Average£96	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Aer Lingus	Cheapest£86	Average£134	FlexibilityNo cancel fee	On-timeN/A	Search Aer Lingus flights

Cheap flights from Dublin to London Heathrow Airport from £32

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/9. Fares are subject to change and may not be available on all flights or dates of travel.

Cheapflights Tip: The best prices from Dublin to London Heathrow are usually found in January or September, booked 48 days in advance, depart on a Friday or Thursday and return on a Friday

Cheap flight deals from Dublin to Heathrow

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Find flight deals from Dublin to Heathrow

Cheapest flights from Dublin to HeathrowExplore the most affordable flight options available from Dublin to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 4 July 2025.

Explore the most affordable flight options available from Dublin to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 4 July 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Dublin to London Heathrow Airport that are best for you.

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.

Cheapflights Insights

Everything you need to know about your flight from Dublin to London Heathrow Airport

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 27 June 2025.

What is the cheapest month to book a flight from Dublin to London Heathrow Airport?

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 4 July 2025.

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 29 June 2025.

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 4 July 2025.

Reviews of airlines servicing Heathrow

Get a feel of what it's like to fly with KLM, Scandinavian Airlines, andVueling from Dublin to London Heathrow Airport by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

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?

What is the cheapest airline to fly from Dublin to London Heathrow Airport round-trip?

What are the cheapest airlines to fly from Dublin to London Heathrow Airport one-way?

What are the most reliable airlines from Dublin to London Heathrow Airport?

What are the cheapest flights from Dublin to London Heathrow Airport?

Can I find deals for flights from Dublin to Heathrow that include hotel bookings?

How can I find direct flights from Dublin to Heathrow?

Can I find deals for business class flights from Dublin to Heathrow?

What is the cheapest month to book a flight from Dublin to London Heathrow Airport?

Travelling to a place near Dublin?

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Alternative routes for Dublin to Heathrow

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Top 2 airlines flying from Dublin to Heathrow

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How does Cheapflights help users find flights from Dublin to Heathrow?

Why should you use Cheapflights to find cheap flight tickets from Dublin to Heathrow?

Can Cheapflights find flights from Dublin to Heathrow with no change fees?

Can Cheapflights notify me if prices for flights from Dublin to Heathrow become cheaper?

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Cheapest flights from Dublin to Heathrow
Explore the most affordable flight options available from Dublin to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 4 July 2025.