LHR

€44 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 12/12. 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
Travellers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Track pricesNot ready to book? Create a price alert for when prices drop.

Free to useThere are no hidden charges or fees.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Flight Deals
Booking Insights
Flight 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, 9 Oct - Mon, 13 Oct
British Airways Logo
11:00 - 12:30DUB-LHR
1h 30mdirect
British Airways Logo
06:20 - 07:45LHR-DUB
1h 25mdirect
€85British Airways
Find Deal
Wed, 5 Nov - Sat, 8 Nov
British Airways Logo
10:20 - 11:55DUB-LHR
1h 35mdirect
British Airways Logo
12:50 - 14:20LHR-DUB
1h 30mdirect
€87British Airways
Find Deal
Wed, 1 Oct - Tue, 7 Oct
British Airways Logo
17:55 - 19:15DUB-LHR
1h 20mdirect
British Airways Logo
18:10 - 19:35LHR-DUB
1h 25mdirect
€88British Airways
Find Deal
Fri, 14 Nov - Sun, 16 Nov
British Airways Logo
15:00 - 16:25DUB-LHR
1h 25mdirect
British Airways Logo
16:10 - 17:40LHR-DUB
1h 30mdirect
€89British Airways
Find Deal
Sat, 13 Dec - Sat, 13 Dec
British Airways Logo
10:55 - 12:30DUB-LHR
1h 35mdirect
British Airways Logo
15:30 - 17:00LHR-DUB
1h 30mdirect
€90British Airways
Find Deal
Sat, 11 Oct - Sat, 18 Oct
Aer Lingus Logo
13:05 - 14:30NOC-LHR
1h 25mdirect
Aer Lingus Logo
11:05 - 12:35LHR-NOC
1h 30mdirect
€105Aer Lingus
Find Deal
Wed, 24 Sep - Wed, 1 Oct
Aer Lingus Logo
21:15 - 22:40SNN-LHR
1h 25mdirect
Aer Lingus Logo
14:40 - 16:10LHR-SNN
1h 30mdirect
€105Aer Lingus
Find Deal
Thu, 25 Sep - Thu, 2 Oct
Aer Lingus Logo
21:15 - 22:40SNN-LHR
1h 25mdirect
Aer Lingus Logo
14:40 - 16:10LHR-SNN
1h 30mdirect
€105Aer Lingus
Find Deal
Thu, 25 Sep - Thu, 2 Oct
Aer Lingus Logo
20:30 - 21:45ORK-LHR
1h 15mdirect
Aer Lingus Logo
22:25 - 23:45LHR-ORK
1h 20mdirect
€106Aer Lingus
Find Deal
Fri, 24 Oct - Tue, 28 Oct
 Logo
12:00 - 13:25DUB-LHR
1h 25mdirect
 Logo
06:30 - 07:55LHR-DUB
1h 25mdirect
€127
Find Deal
Booking Insights

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 €84 return. The most popular connection is from Cork to London Heathrow Airport and KAYAK users have found return deals for as low as €106 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 €536 on average. The cheapest price found on KAYAK in the last 2 weeks cost €55 and departed from Shannon. The most popular routes on KAYAK are Shannon to London Heathrow Airport which costs €264 on average, and Dublin to London Heathrow Airport, which costs €657 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 €112 on average for return flights. On the other hand, the most expensive months are August and June, where the average cost of tickets from Ireland is €161 and €153 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 Dublin €191 return, from Cork €208 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, which saves you about 41% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 17 weeks before departure.

Good to know – Book Cheap London Heathrow Airport Plane Tickets

Low seasonMarch
Cheapest flight€44
Best time to beat the crowds (12% less expensive on average)
Most popular time to fly (20% 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 €84 return. The most popular connection is from Cork to London Heathrow Airport and KAYAK users have found return deals for as low as €106 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 €536. The cheapest price found on KAYAK in the last 2 weeks cost €55 and departed from Shannon 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 €501. On the other hand, the most expensive day to fly is Sunday, 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 €199 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 €890.

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

    Each week there are around 178 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 Shannon €162, from Knock €174, from Dublin €675
  • 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?

 
Nonstop data is based off flight results for the next 60 days. Find direct flights from all airlines flying nonstop 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, +87 more

ANA, AccesRail, +88 more

Tuesday

ANA, AccesRail, Aegean Airlines, +87 more

ANA, AccesRail, +88 more

Wednesday

ANA, AccesRail, Aegean Airlines, +88 more

ANA, AccesRail, +89 more

Thursday

ANA, AccesRail, Aegean Airlines, +84 more

ANA, AccesRail, +85 more

Friday

ANA, AccesRail, Aegean Airlines, +93 more

ANA, AccesRail, +94 more

Saturday

ANA, AccesRail, Aegean Airlines, +89 more

ANA, AccesRail, +90 more

Sunday

ANA, AccesRail, Aegean Airlines, +91 more

ANA, AccesRail, +92 more

See more direct flights

Direct returns

London Heathrow to Ireland

Monday

ANA, AccesRail, Aegean Airlines, +87 more

ANA, AccesRail, +88 more

Tuesday

ANA, AccesRail, Aegean Airlines, +87 more

ANA, AccesRail, +88 more

Wednesday

ANA, AccesRail, Aegean Airlines, +88 more

ANA, AccesRail, +89 more

Thursday

ANA, AccesRail, Aegean Airlines, +84 more

ANA, AccesRail, +85 more

Friday

ANA, AccesRail, Aegean Airlines, +93 more

ANA, AccesRail, +94 more

Saturday

ANA, AccesRail, Aegean Airlines, +89 more

ANA, AccesRail, +90 more

Sunday

ANA, AccesRail, Aegean Airlines, +91 more

ANA, AccesRail, +92 more

See more direct flights

Reviews of the 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.
7.2
Aer LingusOverall score based on 1240 reviews
6.9Entertainment
6.5Food
7.3Boarding
7.1Comfort
8.0Crew
Airline reviews

Dear Aer Lingus Customer Care, I am writing to formally raise a complaint regarding my recent experience on Aer Lingus flight EI53 from Dublin to Seattle on 22/08/2025. Both my wife and I were seated in 15D, 15E directly under a faulty air conditioning unit. Even though the unit was switched off, cold air continued seeping through the sides and blew directly onto us for the entire duration of the flight (over 9 hours). We reported the issue to the cabin crew, but the only attempted solution was placing a piece of food-packaging sticker over the vent. Unsurprisingly, this had no effect. When we pressed further, the crew told us: “It is hard to fix it because we don’t have an engineer on board.” As a result, my wife and I remained exposed to constant cold airflow for the whole flight, and both of us became unwell afterwards, experiencing chills, sore throat and fever at the end of the flight. This has caused significant distress, disrupted our work plans. This experience highlights both a serious maintenance issue and a lack of adequate care for passengers. We therefore request: A full investigation into the defective AC system on this aircraft. An explanation of why no effective remedy (such as reseating us) was provided. Compensation for the illness and disruption caused to both myself and my wife. We ask for a full written response within 28 days. Should this matter not be satisfactorily resolved, we are prepared to escalate the complaint to the Irish Aviation Authority and Commission for Aviation Regulation and other relevant authorities. Thank you for your urgent attention to this matter. Sincerely, Temuujin Tuvshingal Myagmarsuren Ganbold

2.0 MediocreAnonymous, Aug 2025DUB - SEA
Read more Aer Lingus reviews

Dear Aer Lingus Customer Care, I am writing to formally raise a complaint regarding my recent experience on Aer Lingus flight EI53 from Dublin to Seattle on 22/08/2025. Both my wife and I were seated in 15D, 15E directly under a faulty air conditioning unit. Even though the unit was switched off, cold air continued seeping through the sides and blew directly onto us for the entire duration of the flight (over 9 hours). We reported the issue to the cabin crew, but the only attempted solution was placing a piece of food-packaging sticker over the vent. Unsurprisingly, this had no effect. When we pressed further, the crew told us: “It is hard to fix it because we don’t have an engineer on board.” As a result, my wife and I remained exposed to constant cold airflow for the whole flight, and both of us became unwell afterwards, experiencing chills, sore throat and fever at the end of the flight. This has caused significant distress, disrupted our work plans. This experience highlights both a serious maintenance issue and a lack of adequate care for passengers. We therefore request: A full investigation into the defective AC system on this aircraft. An explanation of why no effective remedy (such as reseating us) was provided. Compensation for the illness and disruption caused to both myself and my wife. We ask for a full written response within 28 days. Should this matter not be satisfactorily resolved, we are prepared to escalate the complaint to the Irish Aviation Authority and Commission for Aviation Regulation and other relevant authorities. Thank you for your urgent attention to this matter. Sincerely, Temuujin Tuvshingal Myagmarsuren Ganbold

We had a long delay leaving IOM. No food or drunk service as it is a short flight. Shuttled by bus from terminal to plane with packed in conditions on bus.

Overall it was good experience and it was my first trip with Aer Lingus. One thing I was embarrassed was that someone occupied my seat so I was asked to use another seat. Due to this unhappy happening I almost missed the connecting flight because the random seat was far from the flight door. Food was fine, I liked the macaroni and cheese with fresh bread.

The space between seats was reduced even further. Could not even open the tray table fully and got compressed the moment the front guy reclined. For a long haul flight it was extremely uncomfortable.

Not satisfying due to loss Luguage for 4days. Damage Luguage that had no way to fill up a report for and me as a client to spend more money and time to replace it. Thank you for soliciting my opinion, but it was unfortunately a very disappointing experience. Stephanie Zvi

We booked a flight from FCO(Rome) with a stop over at DUB(Dublin) going to JFK. Boarding from Rome was kind of chaotic since the airport I guess is very small and we needed to shuttle to the airplane. The gate agent just let everyone and anyone go without using the sections so that took a lot longer than usual boarding. From drinking to JFk boarding was good and organized. Amazingly the flights was very smooth sailing and we’ve flown American big airplane to small companies before. The aircraft’s itself is on the older side, can’t complain tho because the plane ride wa smooth. For a 3 hour plane ride, nothing was complimentary. But for the longer leg of the plane complimentary snacks, meals and drinks were provided which was great. The food wasn’t bad either. I would fly with them again, great price and good service.

Everything went well. I made my connection which is always a concern.

Delightful flight, ahead of time with a super crew, thanks

I wish Aer Lingus offered free wifi and had power outlets at the seats. Overall, the flight was good. Seat back entertainment had some interesting options. Food and snack options were mediocre at best. I enjoyed the canned red wine.

In business class overhead bins were minuscule. Had to use cabin staff to find a place for my carry-on bag. Boarding process was shambolic, as “passengers who needed assistance in boarding” absorbed an excessive amount of time and attention that Aer Lingus was apparently unprepared for.

I like the crew, very welcoming. Food can be better. The seat arms don’t go up so. I could use the empty seat next to mine to relax better. 3hrs delay 😠

They sat my 2 year old in the seat behind me, separate from myself and my 5 year-old daughter. When I asked them to fix it they told me to speak to the gate agent in London. When I asked in London they told me to talk to the cabin crew. Then a “Supervisor” stuck us in row 39 at the back of the plane when we were originally sitting in row 25/26. They ran out of food which was gross anyway, and the entertain didn’t work the first hour of the flight. Overall terrible experience.

Last minute charge for 1 checked luggage before boarding which wasn’t mentioned when we bought the tickets months ago. It was an unexpected surprise. We had no choice but to pay to board. Most airlines allow your first luggage free.

In-flight service was very good. The entertainment system keeps resetting, it happened at least 7 times.

Boarding was efficient and quick, crew was very attentive, seats were comfortable.

The crew was friendly and helpful. The food was terrible.

Everything was very good! I personally struggled with the heat in the cabin for the first 2 hours

Terrible service especially for premium economy. Much more comfortable seats on other providers

Friendly hosts/hostesses; dinner was of acceptable, but mediocre standard

Very caring crew on board. Didn’t have dinner as I was sleeping. Was seating in the emergency row so I had comfortable leg room

Travelling to a place near Heathrow?

Book flights to Heathrow if you plan to visit one of these locations
Stansted
Luton
Wembley
Gatwick
Milton Keynes
Richmond
Eastbourne
Northampton
Croydon
Hounslow
Watford
Ilford
Guildford
Slough
Worthing
High Wycombe
Harrow
Maidenhead
Hayes
Maidstone

Everything you need to know for your flight to Heathrow

Information on the airport you'll fly into in London

Not what you’re looking for? Find thousands of other hotels, flights, car hires and package deals with KAYAK.