LHR

€51 Find Cheap Flights to London Heathrow Airport

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to Heathrow departing on 6/9. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to London Heathrow Airport

 
These are the airlines KAYAK users have selected most often from within our search results for flights to London, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results for flights to London, as well as popular online travel agencies
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Flights Deals

Cheap Flights to Heathrow

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights to Heathrow that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals to Heathrow

Thu, 28 Aug - Tue, 2 Sep
British Airways Logo
08:35 - 10:10DUB-LHR
1h 35mdirect
British Airways Logo
06:20 - 07:45LHR-DUB
1h 25mdirect
€86British Airways
Find Deal
Wed, 17 Sep - Sat, 20 Sep
British Airways Logo
10:50 - 12:30DUB-LHR
1h 40mdirect
British Airways Logo
14:55 - 16:20LHR-DUB
1h 25mdirect
€87British Airways
Find Deal
Fri, 11 Jul - Tue, 15 Jul
Aer Lingus Logo
13:05 - 14:30NOC-LHR
1h 25mdirect
Aer Lingus Logo
11:05 - 12:35LHR-NOC
1h 30mdirect
€105Aer Lingus
Find Deal
Mon, 23 Jun - Tue, 24 Jun
Aer Lingus Logo
21:15 - 22:40SNN-LHR
1h 25mdirect
Aer Lingus Logo
19:10 - 20:35LHR-SNN
1h 25mdirect
€105Aer Lingus
Find Deal
Sat, 30 Aug - Sat, 13 Sep
 Logo
17:00 - 18:20DUB-LHR
1h 20mdirect
 Logo
14:55 - 16:20LHR-DUB
1h 25mdirect
€119
Find Deal
Sat, 16 Aug - Tue, 2 Sep
 Logo
07:30 - 09:05DUB-LHR
1h 35mdirect
 Logo
06:20 - 07:45LHR-DUB
1h 25mdirect
€120
Find Deal
Wed, 9 Jul - Tue, 29 Jul
KLM Logo
08:55 - 13:50DUB-LHR
4h 55m1 stop
KLM Logo
06:30 - 10:25LHR-DUB
3h 55m1 stop
€167KLM
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Fri, 10 Oct - Sun, 12 Oct
Scandinavian Airlines Logo
12:20 - 09:35DUB-LHR
21h 15m1 stop
Scandinavian Airlines Logo
06:40 - 10:55LHR-DUB
28h 15m1 stop
€170Scandinavian Airlines
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Sat, 4 Oct - Mon, 6 Oct
Scandinavian Airlines Logo
20:05 - 08:55DUB-LHR
12h 50m1 stop
Scandinavian Airlines Logo
06:40 - 11:50LHR-DUB
5h 10m1 stop
€171Scandinavian Airlines
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Fri, 25 Jul - Fri, 1 Aug
KLM Logo
11:10 - 16:15DUB-LHR
5h 05m1 stop
KLM Logo
06:30 - 12:35LHR-DUB
6h 05m1 stop
€183KLM
Find Deal
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KAYAK's insights & trends for flights to Heathrow

Get data-powered insights and trends into flights to Heathrow to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest flight to London Heathrow Airport?

These are the best round-trip prices found by users searching on KAYAK in the last 72 hours.

In the last 3 days, the cheapest flight deal to London Heathrow Airport was found on the route from Dublin, at €74 return. The most popular connection is from Cork to London Heathrow Airport and KAYAK users have found return deals for as low as €107 in the last 3 days.

How much is a flight to London Heathrow Airport?

The average and cheapest price for all round-trip flights to London Heathrow Airport from each origin found by users searching on KAYAK in the last month.

A flight to London Heathrow Airport costs €407 on average. The cheapest price found on KAYAK in the last 2 weeks cost €60 and departed from Dublin. The most popular routes on KAYAK are Dublin to London Heathrow Airport which costs €649 on average, and Shannon to London Heathrow Airport, which costs €524 on average.

See prices from:

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights to London Heathrow Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights to London Heathrow Airport is January, where tickets cost €111 on average for return flights. On the other hand, the most expensive months are June and November, where the average cost of tickets from Ireland is €152 and €151 respectively. For one-way flights, the best month to travel is February with an average price of €93.

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

If you’re looking for cheap airfare to London Heathrow Airport, 25% of our users found tickets to London Heathrow Airport for the following prices or less: From Knock €157 return, from Shannon €179 return, from Dublin €231 return.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights to London Heathrow Airport, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price, you should book around 5 weeks before departure. For the absolute cheapest price, our data suggests you should book 23 weeks before departure.

Good to know – Book Cheap London Heathrow Airport Plane Tickets

Low seasonMarch
High seasonAugust
Cheapest flight€51
Best time to beat the crowds (12% less expensive on average)
Most popular time to fly (12% more expensive on average)
Flight 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
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. The information is for flights to London based on your location. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs - booking London Heathrow Airport flights

  • What is the cheapest flight to London Heathrow Airport?

    In the last 3 days, the cheapest flight deal to London Heathrow Airport was found on the route from Dublin, at €74 return. The most popular connection is from Cork to London Heathrow Airport and KAYAK users have found return deals for as low as €107 in the last 3 days.

  • How far is London Heathrow Airport from central London?

    The distance between London Heathrow Airport and the city centre of London is 23 km.

  • How much is a flight to London?

    On average, a flight to London costs €407. The cheapest price found on KAYAK in the last 2 weeks cost €60 and departed from Dublin Airport.

  • What is the cheapest day to fly to London?

    Based on KAYAK data, the cheapest day to fly to London is Friday where round-trip tickets can be as cheap as €456. On the other hand, the most expensive day to fly is Monday, where round-trip prices are €660 on average.

  • How does KAYAK find such low prices on flights to London Heathrow Airport?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights to London Heathrow Airport.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket to London Heathrow Airport?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London Heathrow Airport is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights to London Heathrow Airport?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to London Heathrow Airport with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight to London Heathrow Airport?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to London Heathrow Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

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

    The cheapest time of day to fly to London Heathrow Airport is generally at night, when round-trip flights cost €179 on average. The most expensive time of day to fly to London Heathrow Airport is generally in the evening, which is peak travel time and where the average cost of a ticket is €881.

  • How many direct flights to London Heathrow Airport are there each week?

    Each week there are around 176 direct flights from within Ireland to London Heathrow Airport. The most common day for departures is Thursday, with 15% of flights taking off on this day.

Top tips for finding cheap flights to London Heathrow Airport

  • Looking for cheap airfare to London Heathrow Airport? 25% of our users found return tickets to London Heathrow Airport for the following prices or less: From Knock €155, from Shannon €443, from Dublin €927
  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest London Heathrow Airport flight deals.

Prefer to fly direct to London Heathrow?

Find which airlines fly direct to London Heathrow Airport, which days they fly and book direct flights.

Direct departures

Ireland to London Heathrow

Monday

ANA, AccesRail, Aegean Airlines, +86 more

ANA, AccesRail, +87 more

Tuesday

ANA, AccesRail, Aegean Airlines, +86 more

ANA, AccesRail, +87 more

Wednesday

ANA, AccesRail, Aegean Airlines, +87 more

ANA, AccesRail, +88 more

Thursday

ANA, AccesRail, Aegean Airlines, +83 more

ANA, AccesRail, +84 more

Friday

ANA, AccesRail, Aegean Airlines, +90 more

ANA, AccesRail, +91 more

Saturday

ANA, AccesRail, Aegean Airlines, +86 more

ANA, AccesRail, +87 more

Sunday

ANA, AccesRail, Aegean Airlines, +88 more

ANA, AccesRail, +89 more

See more direct flights

Direct returns

London Heathrow to Ireland

Monday

ANA, AccesRail, Aegean Airlines, +86 more

ANA, AccesRail, +87 more

Tuesday

ANA, AccesRail, Aegean Airlines, +86 more

ANA, AccesRail, +87 more

Wednesday

ANA, AccesRail, Aegean Airlines, +87 more

ANA, AccesRail, +88 more

Thursday

ANA, AccesRail, Aegean Airlines, +83 more

ANA, AccesRail, +84 more

Friday

ANA, AccesRail, Aegean Airlines, +90 more

ANA, AccesRail, +91 more

Saturday

ANA, AccesRail, Aegean Airlines, +86 more

ANA, AccesRail, +87 more

Sunday

ANA, AccesRail, Aegean Airlines, +88 more

ANA, AccesRail, +89 more

See more direct flights
See more direct flights

Top airlines flying to Heathrow

 
See real verified KAYAK customer reviews for airlines flying to London. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline from Ireland to London. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
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.
7.1
Aer LingusOverall score based on 1117 reviews
6.8Entertainment
7.2Boarding
7.0Comfort
6.4Food
7.9Crew
Airline reviews

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

4.0 OkayLeo, May 2025DUB - LHR
Read more Aer Lingus reviews

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

i used to fly aer Lingus regularly but due to price - poor seating etc i have been using other carriers - i now have aer lingus in my state and the price is always the highest - i have flown to Ireland 11 times in last 24 months and have not used Hartford because of price

Nicest staff I’ve experienced on a plane! Good food, great entertainment, and they gave out little blankets that my kids loved. All in all, great experience.

I dont fly them much anymore. Other carries offere better pricing and better seating options

Seats weren't very comfortable for a long haul flight but the service made up for it.

The Glasgow to Dublin route was very efficiently boarded, flight and landing and disembarkation were all super smooth. Dublin to JFK flight I was very pleasantly surprised overall. This was my first time on Aer Lingus and having already come off the short regional flight I was curious to know how the international flight would go. Aircraft was solid, entertainment options were better than expected, flight crew were experienced and operated like clockwork. Main entree left a little something to be desired but the snack was very tasty. Boarding and disembarkation again very smooth and pilots got us in earlier than expected. Would definitely fly again

Unfortunately the flight was delayed for 50 min. Just as we were about to board so that was a drag. The boarding was average. The bag check in process was new to us and efficient. And the flight itself was smooth- basically no turbulence.

Food was very bad. Boarding was disorganized and messy. Crew was friendly

It was ok not that much because I always travel with Emirates airlines, Etihad, airlines, Qatar airlines compare to them food and comfortable was too low . Staff was good . Helpful

Noted in last review. Good to know, though air Lingus on European flights does not offer any food or drink, even though we were on the plane for 3 1/2 hours from Naples to Dublin everything you had to purchase even water.

The payment system was not working so was unable to connect wifi the entire flight

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?

Absolutely the worst airline. Can’t find anything positive to say. We were in business which is the same as most airlines coach

everything to do with KAYAK was terrible. Your customer facing departments are utterly useless, timewasting and unhelpful.

I ordered short ribs for main course. It tasted sweet, really sweet. Horrible.

When checking our bags we were told our bags would go through our final destination. This did not happen. When boarding, after group 3 it was a free for all, everyone boards. When served lunch, I asked for anything without dairy, I was given popcorn and gummy snacks. She said she would come back with more options, she never did. Also, when traveling through London, they don’t tell you your gate number until 1 hour before flight leaves, causing everyone to run to their gate.

Full flight, but crew was great. No wifi and no seatback entertainment, so had to read...argh!

The screen didn’t work and I didn’t get the seat upgrade I paid $300 for. They were no help with that,

The crew did not really interact with me which was no problem as I was fine. I did see that they were somewhat short with some passengers but that was not common. Just in general, they did not seem friendly - no requirement to be so but I am used to a friendly crew on most flights. The food was just ok but with a flight that large, I would think it hard to make something more elaborate.

Paid $180 for seat selection, and selection essnt honored. Have to call for a refund.

Travelling to a place near Heathrow?

Book flights to Heathrow if you plan to visit one of these locations
Stansted
Luton
Gatwick
Wembley
Milton Keynes
Richmond
Northampton
Watford
Ilford
Hounslow
Slough
Croydon
Guildford
Eastbourne
Swindon
Canterbury
High Wycombe
Stratford-upon-Avon
Maidstone
Maidenhead

Everything you need to know for your flight to Heathrow

Information on the airport you'll fly into in London

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