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Cheap flights from Dublin to London from $47

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Dublin to London departing on 1/7. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Cheap round-trip flights

British Airways Logo
3:10 pm - 4:35 pmDUB-LHR
1h 25mnonstop
British Airways Logo
6:15 pm - 7:40 pmLHR-DUB
1h 25mnonstop
$102British Airways
Find Deal
Sat, Jan 17 - Mon, Jan 19
British Airways Logo
10:25 am - 12:00 pmDUB-LHR
1h 35mnonstop
British Airways Logo
4:50 pm - 6:20 pmLHR-DUB
1h 30mnonstop
$106British Airways
Find Deal
Tue, Sep 23 - Tue, Sep 23
British Airways Logo
10:25 am - 12:00 pmDUB-LHR
1h 35mnonstop
British Airways Logo
4:50 pm - 6:20 pmLHR-DUB
1h 30mnonstop
$107British Airways
Find Deal
Tue, Sep 23 - Tue, Sep 23
British Airways Logo
5:55 pm - 7:15 pmDUB-LHR
1h 20mnonstop
British Airways Logo
6:30 am - 7:55 amLHR-DUB
1h 25mnonstop
$108British Airways
Find Deal
Sat, Nov 1 - Mon, Nov 3
British Airways Logo
10:25 am - 12:00 pmDUB-LHR
1h 35mnonstop
British Airways Logo
6:15 am - 7:40 amLHR-DUB
1h 25mnonstop
$109British Airways
Find Deal
Tue, Sep 23 - Sat, Sep 27
British Airways Logo
11:00 am - 12:30 pmDUB-LHR
1h 30mnonstop
British Airways Logo
6:15 am - 7:40 amLHR-DUB
1h 25mnonstop
$110British Airways
Find Deal
Thu, Aug 28 - Sat, Aug 30
British Airways Logo
10:25 am - 12:00 pmDUB-LHR
1h 35mnonstop
British Airways Logo
4:50 pm - 6:20 pmLHR-DUB
1h 30mnonstop
$111British Airways
Find Deal
Tue, Sep 23 - Tue, Sep 23
British Airways Logo
11:00 am - 12:30 pmDUB-LHR
1h 30mnonstop
British Airways Logo
6:20 am - 7:45 amLHR-DUB
1h 25mnonstop
$112British Airways
Find Deal
Thu, Aug 28 - Thu, Sep 4
Logo
7:00 pm - 8:20 pmDUB-LHR
1h 20mnonstop
Logo
6:15 am - 7:40 amLHR-DUB
1h 25mnonstop
$129
Find Deal
Wed, Aug 27 - Wed, Sep 3
Aer Lingus Logo
7:00 pm - 8:20 pmDUB-LHR
1h 20mnonstop
Aer Lingus Logo
9:10 pm - 10:30 pmLHR-DUB
1h 20mnonstop
$155Aer Lingus
Find Deal
Sat, Sep 6 - Mon, Sep 8

British Airways flights from Dublin to London Heathrow Airport

Our best British Airways deals on Dublin to London Heathrow Airport flight tickets
British Airways
Jan 17
DUB3:10 pmDublin
1h 25m
LHR4:35 pmLondon Heathrow
Jan 19
LHR6:15 pmLondon Heathrow
1h 25m
DUB7:40 pmDublin
$102
Find similar
British Airways
Sep 23
DUB10:25 amDublin
1h 35m
LHR12:00 pmLondon Heathrow
Sep 23
LHR4:50 pmLondon Heathrow
1h 30m
DUB6:20 pmDublin
$106
Find similar
British Airways
Sep 23
DUB10:25 amDublin
1h 35m
LHR12:00 pmLondon Heathrow
Sep 23
LHR4:50 pmLondon Heathrow
1h 30m
DUB6:20 pmDublin
$107
Find similar

Aer Lingus flights from Dublin to London Heathrow Airport

Our best Aer Lingus deals on Dublin to London Heathrow Airport flight tickets
Aer Lingus
Sep 6
DUB7:00 pmDublin
1h 20m
LHR8:20 pmLondon Heathrow
Sep 8
LHR9:10 pmLondon Heathrow
1h 20m
DUB10:30 pmDublin
$155
Find similar
Aer Lingus
Aug 3
DUB6:30 amDublin
1h 30m
LHR8:00 amLondon Heathrow
Aug 13
LHR3:50 pmLondon Heathrow
1h 25m
DUB5:15 pmDublin
$176
Find similar
Aer Lingus
Aug 2
DUB7:00 pmDublin
1h 20m
LHR8:20 pmLondon Heathrow
Aug 16
LHR8:10 pmLondon Heathrow
1h 20m
DUB9:30 pmDublin
$185
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Dublin to London Heathrow Airport 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, momondo users made 832,500 searches. Data last updated July 31, 2025.
Use the filters below to find and compare flights from Dublin to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

DublinLondon

DUB - LHR

DUBLHR

Dublin

Sat 1/17

3:10 pm-4:35 pm

Nonstop1h 25m

London Heathrow

Mon 1/19

6:15 pm-7:40 pm

Nonstop1h 25m

$102

DublinLondon

DUB - LHR

DUBLHR

Dublin

Tue 9/23

10:25 am-12:00 pm

Nonstop1h 35m

London Heathrow

Tue 9/23

4:50 pm-6:20 pm

Nonstop1h 30m

$106

DublinLondon

DUB - LHR

DUBLHR

Dublin

Tue 9/23

10:25 am-12:00 pm

Nonstop1h 35m

London Heathrow

Tue 9/23

4:50 pm-6:20 pm

Nonstop1h 30m

$107

DublinLondon

DUB - LHR

DUBLHR

Dublin

Sat 11/1

5:55 pm-7:15 pm

Nonstop1h 20m

London Heathrow

Mon 11/3

6:30 am-7:55 am

Nonstop1h 25m

$108

DublinLondon

DUB - LHR

DUBLHR

Dublin

Tue 9/23

10:25 am-12:00 pm

Nonstop1h 35m

London Heathrow

Sat 9/27

6:15 am-7:40 am

Nonstop1h 25m

$109

DublinLondon

DUB - LHR

DUBLHR

Dublin

Thu 8/28

11:00 am-12:30 pm

Nonstop1h 30m

London Heathrow

Sat 8/30

6:15 am-7:40 am

Nonstop1h 25m

$110

DublinLondon

DUB - LHR

DUBLHR

Dublin

Tue 9/23

10:25 am-12:00 pm

Nonstop1h 35m

London Heathrow

Tue 9/23

4:50 pm-6:20 pm

Nonstop1h 30m

$111

DublinLondon

DUB - LHR

DUBLHR

Dublin

Thu 8/28

11:00 am-12:30 pm

Nonstop1h 30m

London Heathrow

Thu 9/4

6:20 am-7:45 am

Nonstop1h 25m

$112

DublinLondon

DUB - LHR

DUBLHR

Dublin

Wed 8/27

7:00 pm-8:20 pm

Nonstop1h 20m

London Heathrow

Wed 9/3

6:15 am-7:40 am

Nonstop1h 25m

$129

DublinLondon

DUB - LHR

DUBLHR

Dublin

Sat 9/6

7:00 pm-8:20 pm

Nonstop1h 20m

London Heathrow

Mon 9/8

9:10 pm-10:30 pm

Nonstop1h 20m

$155

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to London from

How to get the cheapest flight ticket from Dublin to London Heathrow Airport

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 Heathrow Airport?

The month of January is, on average, the cheapest month to fly to London Heathrow Airport from Dublin, with most prices found around $129. If you’re not able to fly to London Heathrow Airport in January, then September is your next best option. Flight prices from Dublin to London Heathrow Airport during September average around $135.

What is the cheapest day to depart on your flight to London Heathrow Airport?

Our data shows that Thursday is the least expensive day to fly to London Heathrow Airport. Tickets to fly out on this day can be as low as $277. The most expensive day to fly to London Heathrow Airport is Tuesday, with ticket prices averaging around $581.

What is the cheapest time of day to depart on your flight to London Heathrow Airport?

According to our data, the cheapest time of day to fly to London Heathrow Airport is in the evening. momondo users have found flights departing from Dublin to London Heathrow Airport in the evening for as low as $170. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights in the afternoon are often more expensive with an average ticket price of $612.

What is the cheapest Dublin to London Heathrow flight route?

Fly from Dublin to London Heathrow for the best Dublin - London Heathrow flight prices

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

You are more likely to see cheaper flights to London Heathrow Airport from Dublin when booking weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around $157 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London Heathrow Airport from Dublin for as low as $106 on momondo.

What cabin class options are available on Dublin to London Heathrow flights?

There are 4 cabin classes available to choose from on Dublin to London Heathrow flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have Dublin to London Heathrow Airport flight prices changed over time?

As of July 2025, prices for Dublin to London Heathrow Airport flights are approximately 35% more expensive when compared to flights at the same time last year.

When to book flights from Dublin to London Heathrow Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Dublin to London Heathrow Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Dublin to London Heathrow Airport (DUB to LHR) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Dublin to London Heathrow Airport

Best Price Found

$47

Fastest flight time

1h 20m

Direct flights

Every day
The best one-way flight to London Heathrow Airport from Dublin in the past 72 hours is $47. The best round-trip flight deal from Dublin to London Heathrow Airport found on momondo in the last 72 hours is $102.
The fastest flight from Dublin to London Heathrow Airport takes 1h 20m
Direct flights go from Dublin to London Heathrow Airport every day.
Search flight deals

  • How far is Dublin to London Heathrow by plane?

    There are 276.5 mi between Dublin and London Heathrow. A reasonable flight in good conditions will take 1h 20m.

  • When did momondo last update prices for flights from Dublin Airport to London Heathrow Airport?

    Prices for flights from Dublin Airport to London Heathrow Airport refresh daily.

  • How many operators does momondo search for flights from Dublin Airport to London Heathrow Airport?

  • How old do you have to be to fly from Dublin Airport to London Heathrow Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Dublin Airport to London Heathrow Airport.

  • What documentation or ID do you need to fly to London Heathrow Airport?

    The required travel and health documents for your London Heathrow Airport 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 license and a passport valid for six months after your intended arrival at London Heathrow Airport. 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 Dublin to London Heathrow Airport?

  • What is the most popular airline from Dublin to London Heathrow Airport?

Best airlines flying from Dublin to London Heathrow Airport

Compare and see reviews for airlines that fly from Dublin to London Heathrow Airport with momondo
Airline
Rating
Free Cancellation
Price
British AirwaysPriceFrom $90Free CancellationRating
6.6
7,222 reviews
Search British Airways flights
Aer LingusPriceFrom $120Free CancellationRating
7.1
1,192 reviews
Search Aer Lingus flights

  • Aer Lingus Flights From Dublin to London Heathrow Airport

    Aer Lingus flight deals from Dublin to London Heathrow Airport start from $120 round-trip. Over the 90 Aer Lingus flights for this route in a normal week, average airfare is usually $184 round-trip - but some users have found much cheaper deals with momondo.

  • British Airways Flights From Dublin to London Heathrow Airport

    Across 7,222 British Airways reviews on momondo, the average score is 6.6/10. British Airways flies from Dublin to London Heathrow Airport about 91 times each week, with ticket deals ranging from $90 to $138. Price data is based on momondo searches in the last 72 hours.

Traveling to a place near London?

Book flights to London if you plan to visit one of these locations
Gatwick
Hounslow
Dover
Slough
Luton
Dartford
Guildford
Milton Keynes
Stansted
Hayes
Crawley
Croydon
Chelmsford
Salisbury
Ilford
Brentwood
Colchester
Stratford-upon-Avon
Folkestone
Swindon

Why use momondo?

Why should I use momondo to find a flight deal from Dublin to London?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to London from Dublin.

Can I find flights from Dublin to London with flexible booking policies on momondo?

momondo does allow users to show only those flights to London from Dublin which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Dublin to London?

Once you have performed a search for Dublin to London flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Dublin to London right now. Can momondo alert me if prices change?

If you are simply researching potential flights to London, momondo offers a useful price alert feature which will track prices for flights to London from Dublin and alert you when they change.

An easier way to manage your London Heathrow Airport trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
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