LHR

€37 Find Cheap Flights to London Heathrow Airport – Compare and Save

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1 adult, Economy, 0 bags

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Everything you should know

Cheapest return flight
€79
Typical prices: €121-€201
Aer Lingus
Wed 31/10Wed 7/11
DUB - LHR • Direct
Cheapest one-way flight
€37
Typical prices: €73-€130
Aer Lingus
Sat 10/11
DUB - LHR • Direct
Direct flights
You can fly direct with Aer Lingus and British Airways. Average duration is 1h 26m
FAQs
FAQs
Top airlines
Most flights • 129 per week
Best reviews • 7.3 score
Airline reviews
+1
Airline reviews
+1
Top routes
Cheapest • 16% average savings
Most popular
Insights
Insights
When to book
in advance
Our data shows that travellers who book at least 22 weeks in advance save around 44% compared to booking last minute.
Insights
Insights
When to travel
Cheapest • 20% price drop
Most popular
Good to know
+1
Good to know
+1
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We hope you enjoy your trip to London Heathrow Airport!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights to Heathrow

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals to Heathrow

Sat, 31 Oct - Sat, 7 Nov
Aer Lingus Logo
18:30 - 19:50DUB  Dublin-LHR London Heathrow
1h 20mdirect
Aer Lingus Logo
16:20 - 17:45LHR  London Heathrow-DUB Dublin
1h 25mdirect
€79Aer Lingus
Tue, 3 Nov - Tue, 10 Nov
Aer Lingus Logo
19:45 - 21:05DUB  Dublin-LHR London Heathrow
1h 20mdirect
Aer Lingus Logo
20:45 - 22:05LHR  London Heathrow-DUB Dublin
1h 20mdirect
€83Aer Lingus
Tue, 3 Nov - Tue, 10 Nov
Aer Lingus Logo
19:45 - 21:05DUB  Dublin-LHR London Heathrow
1h 20mdirect
Aer Lingus Logo
07:50 - 09:10LHR  London Heathrow-DUB Dublin
1h 20mdirect
€84Aer Lingus
Wed, 4 Nov - Wed, 11 Nov
Aer Lingus Logo
19:45 - 21:05DUB  Dublin-LHR London Heathrow
1h 20mdirect
Aer Lingus Logo
20:45 - 22:05LHR  London Heathrow-DUB Dublin
1h 20mdirect
€84Aer Lingus
Mon, 16 Nov - Wed, 18 Nov
British Airways Logo
20:40 - 22:00DUB  Dublin-LHR London Heathrow
1h 20mdirect
British Airways Logo
18:25 - 19:45LHR  London Heathrow-DUB Dublin
1h 20mdirect
€85British Airways
Thu, 29 Oct - Mon, 2 Nov
British Airways Logo
20:40 - 22:00DUB  Dublin-LHR London Heathrow
1h 20mdirect
British Airways Logo
15:25 - 16:55LHR  London Heathrow-DUB Dublin
1h 30mdirect
€89British Airways
Thu, 29 Oct - Mon, 2 Nov
British Airways Logo
20:40 - 22:00DUB  Dublin-LHR London Heathrow
1h 20mdirect
British Airways Logo
15:25 - 16:55LHR  London Heathrow-DUB Dublin
1h 30mdirect
€90British Airways
Thu, 1 Oct - Thu, 8 Oct
Multiple Airlines Logo
08:35 - 10:10DUB  Dublin-LHR London Heathrow
1h 35mdirect
Multiple Airlines Logo
15:50 - 17:15LHR  London Heathrow-DUB Dublin
1h 25mdirect
€96Multiple Airlines
Tue, 6 Oct - Wed, 7 Oct
Multiple Airlines Logo
12:50 - 14:20DUB  Dublin-LHR London Heathrow
1h 30mdirect
Multiple Airlines Logo
15:50 - 17:15LHR  London Heathrow-DUB Dublin
1h 25mdirect
€99Multiple Airlines
Mon, 5 Oct - Mon, 12 Oct
Multiple Airlines Logo
08:30 - 10:05DUB  Dublin-LHR London Heathrow
1h 35mdirect
Multiple Airlines Logo
21:10 - 22:30LHR  London Heathrow-DUB Dublin
1h 20mdirect
€100Multiple Airlines
Booking Insights

Price, demand, and travel trends for Ireland to London Heathrow Airport flights

Use KAYAK data on prices, travel dates, airlines, and seasonal trends to compare options and book flights from Ireland to London Heathrow Airport with more confidence.

What is the cheapest flight to London Heathrow Airport?

Dublin to London Heathrow Airport is the cheapest route at €79 return, found in the past 5 days on KAYAK. KAYAK data shows this is also the most popular route.

How much is a flight to London Heathrow Airport?

A return flight to London Heathrow Airport costs €151 on average, based on data over the past 12 months on KAYAK. Return fares from Dublin average €102, while Cork runs a bit higher at €122.

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

Tuesday is the cheapest day to fly to London Heathrow Airport at €152 return on average over the past 12 months on KAYAK. Sunday is the most expensive at €172.

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

•January is the cheapest month to fly to London Heathrow Airport with an average price of €121 return.
•August (€169) and September (€168) are the most expensive.
•Based on KAYAK data over the past 12 months.

What is the cheapest time of day to fly to London Heathrow Airport?

Night flights to London Heathrow Airport are the cheapest at €145 return on average. Afternoon flights are the most expensive at €172.

What is a good deal for flights to London Heathrow Airport?

Flights under €121 are considered a good deal. 25% of KAYAK users found return flights to London Heathrow Airport at or below these prices, with the lowest fares from:
•Dublin €61
•Shannon €66
•Cork €68.

When are flights to London Heathrow Airport the cheapest?

Flights to London Heathrow Airport are cheapest 22 weeks before departure. Booking in this window typically costs about 44% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

Key details for flights to London Heathrow Airport

Low season

February

Cheapest flight

€37
Best time to beat the crowds (10% less expensive on average)
Most popular time to fly (5% more expensive on average)
Flights from Dublin to London Heathrow Airport

When to book flights to Heathrow

Are your dates flexible? Find out the best times to travel to Heathrow based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price

Your questions about flights to London Heathrow Airport, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines, and booking questions.

  • What is the difference between the most popular and the most frequent airline at London Heathrow Airport?

    Aer Lingus operates the most flights from Ireland to London Heathrow Airport at 129 per week, and for this route Aer Lingus is also the airline most often selected by KAYAK users searching for flights from Ireland to London Heathrow Airport. The two are sometimes different because flight volume reflects an airline's schedule, while popularity reflects traveller choice.

  • Which airports serve London and the surrounding area?

    Flights to London can arrive at several major airports serving the metro area, including London City (LCY), London Gatwick (LGW), London Heathrow (LHR), London Luton (LTN), London Southend (SEN) and London Stansted (STN). Nearby alternatives within 80.5 km of London include London City (LCY). This airport is not in London itself but may be useful depending on your route, airline, and onward travel plans.

  • How long are direct flights to London Heathrow Airport from different departure cities?

    Direct flight time to London Heathrow Airport varies depending on your departure city:

    • from Knock: 1h 15m
    • from Dublin: 1h 15m
    • from Shannon: 1h 20m
    • from Cork: 1h 15m

  • How many flights serve London Heathrow Airport?

    London Heathrow Airport receives 24 flights per day and 171 per week from across the world. Dublin has the most flights to London Heathrow Airport with 305 weekly flights.

  • How do I know if a flight to London Heathrow Airport is a good deal?

    A good deal on a flight to London Heathrow Airport is around €121 return. This fare is in the lowest 25% of return flight prices searched on KAYAK, averaged across the cities most often searched as origins by KAYAK users.

  • How expensive are last-minute flights to London Heathrow Airport?

    Last-minute fares to London Heathrow Airport – booked within 2 weeks of departure – run 28% above the average return fare of €151.

  • Which airlines should I consider for flights to London Heathrow Airport?

Your guide to booking London Heathrow Airport flights

From booking to airport arrival, find tips to help you plan your flight with more confidence.
  • For the best chance at a low fare to London Heathrow Airport, aim to book around 22 weeks before you fly. That window historically saves about 44% versus last-minute pricing based on KAYAK booking data over the last 12 months.
  • For flights to London Heathrow Airport, recent KAYAK data shows that stronger deals tend to be around €121 return. If you see a fare below that threshold, it's a good deal – book before the price climbs back up.
  • If you can choose when to go, aim to travel to London Heathrow Airport in January. Return fares historically average €121 that month – typically the cheapest month to travel based on the last 12 months.
  • Before you book:

    • Check the route's typical price range so you can spot a deal.
    • Confirm baggage fees and seat selection costs on budget carriers.
    • Verify whether you need any travel documents beyond an ID.
    • Pick a departure airport, since your nearest may not be the cheapest origin.
  • Shift your departure to evening to save up to €27 per return. Evening flights to London Heathrow Airport average €145 compared to €172 for midday flights. See the time-of-day chart above for the full breakdown.
  • Bag allowances vary by airline, fare type, cabin class, and route. On flights to London Heathrow Airport, some airlines may include bags at no extra cost. For example, Aer Lingus includes a cabin bag and a checked bag in Economy class, British Airways includes a cabin bag and a checked bag in Economy class, and American Airlines includes a cabin bag and a checked bag in Economy class. Always check the fare details before booking, since bag policies can change by ticket type.
  • Once you arrive in London Heathrow Airport, a few great places to start are Hyde Park, Sondheim Theatre, and Leicester Square. These are popular with first-time visitors and can give you a good feel for the area.

Reviews of the top airlines flying to Heathrow

 
Need help choosing which airline to fly with to Heathrow? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.3
Aer LingusOverall score based on 1769 reviews
7.0Entertainment
7.5Boarding
7.2Comfort
8.1Crew
6.7Food
Airline reviews

Excellent cabin crew. They helped a number of passengers with mobility challenges and a mother with a 3 year old and an infant. Better than most other airlines by far. Well done Eduardo!

10.0 ExcellentRon, Aug 2026
Read more Aer Lingus reviews

Excellent cabin crew. They helped a number of passengers with mobility challenges and a mother with a 3 year old and an infant. Better than most other airlines by far. Well done Eduardo!

Air Lingus was in no hurry to get us on the plane as sat at the gate a long time before they boarded us. Then they leave us on the tarmac for an hour. They were no help to let me know what I needed to do to get home. I had to navigate London Heathrow with 0 help from them.

Great. Has a problem with DOB. Fixed 4 us. Led to a 5 hour earlier flight to London!

My flights with Aer Lingus were very good and I will definitely fly with them. Again in future trips to Ireland and Scotland.

At check-in the unmanned machines said QR code was invalid so had to queue for over an hour to check in bags

Friendly crew who apologised and explained reason for delay. Good on board service. Rather cramped seating. Late departure.

Amenity kits were never handed out. There was zero friendliness and assistance by crew. Food was uneatable. One drink was offered and no wine, with dinner or before or after. Cocktails and beverages were not encouraged and when I asked for water, none was given. Poorest, most cramped business class flight I’ve ever been on.

Short flight so not much to rate. Surprised I had to pay for a soda.

Very good need to offer better choice of food for business

Air Lingus flights were delayed on each of the three flights we took. Not a very good , and organized airline.

Check in at bcn was a nightmare. In-seat screen did not work, asked for help twice but was not able to use overhead light, watch the safety briefing, watch entertainment or monitor map

Over sold! Never again. Got bumped even though I checked in and arrived on time with all my documents in order. Wasn’t even offer food/drink voucher for the next flight that was 6 hours later.

We loved our flight attendant (Emma, from Scotland), the meals were perfectly spaced out, and the in-flight entertainment was super generous and delightful.

Why don't they board from the back of the plane to the front. We have to move by all the people and their luggage to get to the seats.

The boarding call announcements versus the Staff announcements versus the digital signage board on the out-going and returning flights WERE NOT IN SYNC. I was sent through check and re-checks 3 times. WHY?

With three empty seats across the aisle from me I politely asked the crew if I could sit in one of those seats. They initially told me I couldn't do it for my safety. When I pressed them again they blamed the captain. So which was it? I didn't appreciate either nonsense explanation simply because they didn't want to honor my request.

Great room between the seats, food was excellent, very comfortable overall and could have stayed on the plane even longer

Flight was great (only a short hop from London to Dublin). Wi-Fi available on board(around 2 euros), power sockets, complimentary water and biscuit. Landin/ takeoff all went without a flaw.

The issue wasn’t necessarily with British Airlines but was a reaction to their delayed flight from Miami to London on Aug 18. Due to the delay out of Miami, we missed our BA flight with Aer Linguis on the 19th from London to Cork, Ireland. The attendant in London was helpful and rebooked us for a flight later that same day ($120). However, she failed to mention that as a result of the missed flight, our returning flight was also cancelled and the rebooking cost was $451. Disappointed at the lack of communication between airlines and between the agent and the customer.

You lost my luggage on the trip to Dublin and again on the way back, still waiting on luggage.

Travelling to a place near Heathrow?

Book flights to Heathrow if you plan to visit one of these locations
Stansted
Luton
Wembley
Gatwick
Hounslow
Croydon
Milton Keynes
Ilford
Watford
Stratford-upon-Avon
Slough
Northampton
Southend-on-Sea
St. Albans
Ipswich
Guildford
Hayes
Eastbourne
Maidstone
Swindon

More options for your flight to Heathrow