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Cheap flights from Dublin to London Heathrow Airport from £30

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 14/3. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — LHR
22 mar. — 29 mar.1
1 adult
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 Friday or Thursday and return on a Friday

Cheap flight deals from Dublin to Heathrow

Enter your travel dates to find the best prices.

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 20 febrero 2026.

mar. 10/313:25
DUB
-
LHR
Nonstop1h 25m
British Airways
jue. 12/310:45
LHR
-
DUB
Nonstop1h 30m
British Airways
Deal found 18/2£68
sáb. 14/317:55
DUB
-
LHR
Nonstop1h 20m
British Airways
sáb. 21/306:30
LHR
-
DUB
Nonstop1h 25m
British Airways
Deal found 19/2£74
sáb. 21/320:40
DUB
-
LHR
Nonstop1h 20m
British Airways
sáb. 28/315:30
LHR
-
DUB
Nonstop1h 30m
British Airways
Deal found 19/2£78
vie. 24/420:10
DUB
-
LHR
Nonstop1h 15m
British Airways
dom. 26/406:20
LHR
-
DUB
Nonstop1h 25m
British Airways
Deal found 17/2£79
sáb. 7/317:55
DUB
-
LHR
Nonstop1h 20m
British Airways
sáb. 14/306:30
LHR
-
DUB
Nonstop1h 25m
British Airways
Deal found 18/2£80
sáb. 28/217:55
DUB
-
LHR
Nonstop1h 20m
British Airways
sáb. 7/315:30
LHR
-
DUB
Nonstop1h 30m
British Airways
Deal found 17/2£81
vie. 27/320:35
DUB
-
LHR
Nonstop1h 20m
British Airways
dom. 29/306:20
LHR
-
DUB
Nonstop1h 25m
British Airways
Deal found 19/2£82
mié. 10/615:25
DUB
-
LHR
Nonstop1h 30m
British Airways
jue. 11/616:30
LHR
-
DUB
Nonstop1h 30m
British Airways
Deal found 18/2£83

Find 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 20 febrero 2026.

Round-trip from

£68

One-way from

£30

Popular in

August

Cheapest in

January

Average price

£122

Good round-trip deal

£405 or less

Good one-way deal

£57 or less
British Airways
  • British Airways
  • 10/3-12/3
  • Nonstop
  • 2h 55m total
  • Dublin to London
Search Deals
British Airways
  • British Airways
  • 14/3
  • Nonstop
  • 1h 20m total
  • Dublin to London
Search Deals
Highest demand for flights based on searches. 5% potential increase in price (£5 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (£2 potential savings vs. average return price).
Search Deals
Average for round-trip flights in February 2026
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Price to beat on a round-trip flight from Dublin to London Heathrow.
Search Deals
Price to beat on a one-way flight from Dublin to London Heathrow.
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Dublin to Heathrow that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 20 febrero 2026.
Use the filters below to find and compare flights from Dublin to London Heathrow Airport that are best for you.

Fly from

Dublin

Fly to

Heathrow

Route

Depart

Return

Price

DublinLondon

DUB - LHR

DUBLHR

Dublin

vie. 27/3

20:35-21:55

Nonstop1h 20m

London Heathrow

dom. 29/3

06:20-07:45

Nonstop1h 25m

£82

DublinLondon

DUB - LHR

DUBLHR

Dublin

sáb. 25/4

20:15-21:30

Nonstop1h 15m

London Heathrow

dom. 26/4

06:20-07:45

Nonstop1h 25m

£83

DublinLondon

DUB - LHR

DUBLHR

Dublin

lun. 15/6

20:30-21:45

Nonstop1h 15m

London Heathrow

mar. 16/6

17:10-18:40

Nonstop1h 30m

£84

DublinLondon

DUB - LHR

DUBLHR

Dublin

vie. 20/3

20:35-21:55

Nonstop1h 20m

London Heathrow

sáb. 21/3

06:30-07:55

Nonstop1h 25m

£86

DublinLondon

DUB - LHR

DUBLHR

Dublin

mar. 5/5

10:30-12:00

Nonstop1h 30m

London Heathrow

dom. 10/5

06:20-07:45

Nonstop1h 25m

£86

DublinLondon

DUB - LHR

DUBLHR

Dublin

jue. 6/8

18:50-20:05

Nonstop1h 15m

London Heathrow

sáb. 8/8

06:15-07:40

Nonstop1h 25m

£88

DublinLondon

DUB - LHR

DUBLHR

Dublin

vie. 31/7

20:10-21:25

Nonstop1h 15m

London Heathrow

dom. 2/8

06:20-07:45

Nonstop1h 25m

£89

DublinLondon

DUB - LHR

DUBLHR

Dublin

mar. 4/8

19:30-20:45

Nonstop1h 15m

London Heathrow

vie. 7/8

06:20-07:45

Nonstop1h 25m

£91

DublinLondon

DUB - LHR

DUBLHR

Dublin

lun. 23/3

20:40-22:00

Nonstop1h 20m

£36

DublinLondon

DUB - LHR

DUBLHR

Dublin

jue. 4/6

20:20-21:35

Nonstop1h 15m

£37

Flights are sorted by cheapest return flights first.

Deals found on 16/2

Showing 1-10 of 17 results
1
2

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

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 18 February 2026.

Booking 73 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.

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

Currently, January is the cheapest month in which you can book a flight from Dublin to London Heathrow Airport (average of £65). Flying from Dublin to London Heathrow Airport in May is currently the most expensive (average of £86). 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 20 febrero 2026.

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 51% on airfare.

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 17 February 2026.

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. Saturday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Heathrow

Get insights into the airlines that provide service to Heathrow. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Heathrow. Reviews last updated 20 febrero 2026.
Get a feel of what it's like to fly with Aer Lingus and British Airways 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.
Aer Lingus
7.2
Good
1,456 reviews
Check prices

Boarding

7.4

Entertainment

7.0

Comfort

7.1

Overall

7.2

Crew

8.1

Food

6.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Nov 2025

DUB - EDI

Fine except for app. Couldn’t check in online - kept saying I couldn’t check in until the morning after my flight. On second leg I could check in but couldn’t get my boarding pass into my wallet. Thankfully I took a screenshot of it because I couldn’t retrieve it when we boarded - the app prohibited it.
Aer Lingus
7.2
Good
1,456 reviews
Aer Lingus
7.2
Good
1,456 reviews
Check prices

Boarding

7.4

Entertainment

7.0

Comfort

7.1

Overall

7.2

Crew

8.1

Food

6.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Nov 2025

DUB - EDI

Fine except for app. Couldn’t check in online - kept saying I couldn’t check in until the morning after my flight. On second leg I could check in but couldn’t get my boarding pass into my wallet. Thankfully I took a screenshot of it because I couldn’t retrieve it when we boarded - the app prohibited it.
British Airways
6.7
Okay
7,755 reviews
Aer Lingus
7.2
Good
1,456 reviews
Check prices

Boarding

7.4

Entertainment

7.0

Comfort

7.1

Overall

7.2

Crew

8.1

Food

6.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Nov 2025

DUB - EDI

Fine except for app. Couldn’t check in online - kept saying I couldn’t check in until the morning after my flight. On second leg I could check in but couldn’t get my boarding pass into my wallet. Thankfully I took a screenshot of it because I couldn’t retrieve it when we boarded - the app prohibited it.

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?

    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 47 daily outbound flights to London Heathrow from 2 different airlines.

  • How long is the flight from Dublin to London Heathrow Airport?

    Airlines like British Airways fly from Dublin to London Heathrow Airport in about 1h 20m. The time it takes to get you to your destination is usually consistent. Airlines will cover a distance of 279 mi. Most flights are nonstop.

  • What are the cheapest airlines flying from Dublin to London Heathrow Airport round-trip?

    Flying on British Airways is currently your cheapest option to London Heathrow Airport, with prices starting at £72. Another option worth looking into is Aer Lingus, starting at £97 return. Users have found that British Airways is 42% cheaper than the other options available to this destination.

  • 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 (89%), LATAM Airlines (83%) and British Airways (80%).

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

    While on average a flight from Dublin to London Heathrow Airport is generally £1,297, our data shows the cheapest flight currently is £41. When looking at the most popular route, (Dublin - London Heathrow), you can expect to pay £73 for that flight.

  • 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, January is the cheapest month in which you can book a flight from Dublin to London Heathrow Airport (average of £65). Flying from Dublin to London Heathrow Airport in May is currently the most expensive (average of £86). 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.

See more FAQs

Travelling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Milton Keynes
Luton
Croydon
Wembley
Northampton
Gatwick
Slough
Hounslow
Ilford
Hayes
Brentford
Colchester
Watford
Guildford
Kingston upon Thames
Eastbourne
Ipswich
Chelmsford
Swindon
Bedford

Browse thousands of different options on Cheapflights for your next trip

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Top 2 airlines flying from Dublin to Heathrow

Discover the top 2 airlines that operate flights from Dublin to Heathrow. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 20 febrero 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£72Average£114FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Aer LingusCheapest£97Average£140FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights

Fly with Cheapflights

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?

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.

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

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

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

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.

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