LHR

€47 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 20/12. 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.

Flights Deals
Useful Info
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

Wed, 27 Aug - Sat, 30 Aug
British Airways Logo
10:50 - 12:30DUB-LHR
1h 40mdirect
British Airways Logo
06:15 - 07:40LHR-DUB
1h 25mdirect
€87British Airways
Find Deal
Wed, 13 Aug - Sat, 30 Aug
British Airways Logo
10:55 - 12:30DUB-LHR
1h 35mdirect
British Airways Logo
14:55 - 16:20LHR-DUB
1h 25mdirect
€89British Airways
Find Deal
Wed, 20 Aug - Thu, 21 Aug
British Airways Logo
10:50 - 12:30DUB-LHR
1h 40mdirect
British Airways Logo
06:20 - 07:45LHR-DUB
1h 25mdirect
€90British Airways
Find Deal
Tue, 5 Aug - Tue, 12 Aug
British Airways Logo
10:25 - 12:00DUB-LHR
1h 35mdirect
British Airways Logo
18:10 - 19:35LHR-DUB
1h 25mdirect
€90British Airways
Find Deal
Wed, 6 Aug - Tue, 26 Aug
British Airways Logo
12:45 - 14:15DUB-LHR
1h 30mdirect
British Airways Logo
06:20 - 07:45LHR-DUB
1h 25mdirect
€91British Airways
Find Deal
Tue, 22 Jul - Wed, 23 Jul
Aer Lingus Logo
13:05 - 14:30NOC-LHR
1h 25mdirect
Aer Lingus Logo
11:05 - 12:35LHR-NOC
1h 30mdirect
€108Aer Lingus
Find Deal
Sun, 3 Aug - Wed, 6 Aug
 Logo
07:30 - 09:05DUB-LHR
1h 35mdirect
 Logo
16:30 - 17:55LHR-DUB
1h 25mdirect
€122
Find Deal
Thu, 31 Jul - Tue, 12 Aug
Aer Lingus Logo
07:40 - 09:05SNN-LHR
1h 25mdirect
Aer Lingus Logo
19:10 - 20:35LHR-SNN
1h 25mdirect
€123Aer Lingus
Find Deal
Thu, 24 Jul - Mon, 28 Jul
Aer Lingus Logo
21:15 - 22:40SNN-LHR
1h 25mdirect
Aer Lingus Logo
19:10 - 20:35LHR-SNN
1h 25mdirect
€126Aer Lingus
Find Deal
Mon, 21 Jul - Wed, 23 Jul
Aer Lingus Logo
21:15 - 22:40SNN-LHR
1h 25mdirect
Aer Lingus Logo
19:10 - 20:35LHR-SNN
1h 25mdirect
€127Aer Lingus
Find Deal
Useful Info

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 €73 return. The most popular connection is from Cork to London Heathrow Airport and KAYAK users have found return deals for as low as €134 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 €391 on average. The cheapest price found on KAYAK in the last 2 weeks cost €54 and departed from Shannon. The most popular routes on KAYAK are Dublin to London Heathrow Airport which costs €551 on average, and Shannon to London Heathrow Airport, which costs €700 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 €109 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 €151 and €149 respectively. For one-way flights, the best month to travel is February with an average price of €92.

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 Shannon €171 return, from Dublin €188 return, from Cork €553 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 seasonJuly
Cheapest flight€47
Best time to beat the crowds (12% less expensive on average)
Most popular time to fly (10% 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 €73 return. The most popular connection is from Cork to London Heathrow Airport and KAYAK users have found return deals for as low as €134 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 €391. The cheapest price found on KAYAK in the last 2 weeks cost €54 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 €462. On the other hand, the most expensive day to fly is Sunday, where round-trip prices are €657 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 €185 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 €897.

  • 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 Knock €108, from Shannon €419, from Dublin €892
  • 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, +91 more

ANA, AccesRail, +92 more

Saturday

ANA, AccesRail, Aegean Airlines, +87 more

ANA, AccesRail, +88 more

Sunday

ANA, AccesRail, Aegean Airlines, +89 more

ANA, AccesRail, +90 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, +91 more

ANA, AccesRail, +92 more

Saturday

ANA, AccesRail, Aegean Airlines, +87 more

ANA, AccesRail, +88 more

Sunday

ANA, AccesRail, Aegean Airlines, +89 more

ANA, AccesRail, +90 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.
7.1
Aer LingusOverall score based on 1151 reviews
8.0Crew
6.8Entertainment
6.4Food
7.0Comfort
7.2Boarding
Airline reviews

Dublin to Boston was decent. Food and entertainment was included and that was expected for the rate paid.

6.0 GoodTim, Jul 2025DUB - BOS
Read more Aer Lingus reviews

Dublin to Boston was decent. Food and entertainment was included and that was expected for the rate paid.

No entertained. food and beverages were not complimentary. they lost my checked luggage which made my 10 day vacation unpleasant.

Flight was on time. Boarding was quick and efficient. Seats were comfortable. Food was fine.

I like Aer Lingus so that is why I’m writing this critique so they can become better. The boarding gate was too small to board properly. Our seats were toward the back of the plane knowing we would be boarding after business class, we moved to that area after business class boarded. An Aer Lingus employee told us we couldn’t stand there. We explained we were the next group to board and wouldn’t even be able to hear when our boarding was called. She didn’t care and was not very professional. The cabin was freezing. I wouldn’t feed my dog the food. We were over an hour late coming into chicago because of weather which can’t be avoided. I asked the crew if they could make an annoucement for before whose final destination is chicago to wait and allow the people with connecting to deplane first. He said there are a lot of people with connecting flights. He said, it doesn’t matter. Well, yes it does. He could have been more considerate of his passengers.

The flight was delayed by about an hour, but the staff and signs at the airport never actually said it was delayed. We were told we'd be boarding in about 10 minutes, then 20 minutes passed, and were told again that we would board in about 10 minutes. That happened multiple times, such that "10 minutes" turned into an hour.

The seat spacing was good. The food, not so good... typical airline food. 😕

I would face like to have more selections for entertainments overall it was very good. .

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 love my flight from Munich to San Diego — highly recommend British Airways.

Very crowded, no real explanation of food "chicken or pasta?" After dinner no drinks service. Plane was clean, but little help with finding soaces fir luggage to get into overhead bins. Many passengers putting 2 bags, hats, duty free in overhead bins so no space for roll ons

The boarding was smooth, seats comfortable, crew friendly and helpful.

The crew were good. The flight was on time. The food was bad.

I always have issues to connect with BA WIFI. Nothing to blame BA for but there is always an issue getting a gate at any London Airport whether the flight is on time or delayed. But overall a great flight.

Bad. After 3 hours on tarmac, flight got cancelled. No assistance whatsoever from BA.

The wheelchair service was good. Staff and crew were helpful/supportive. The business of 'being overbooked' ....."you may not be able to travel tonight/we may have to put you in Economy'" was rather unsettling. Even Economy Plus in a MIDDLE seat felt cramped. The seating and experience felt very basic even though I had struggled to pay for extra - Economy Plus.

Flight was good but seat in 12D was not comfortable, better on the Airbus 321 from Tampa to Charlotte. No breakfast was served before landing in zLonfon only a coffee and orange juice.

I was transferred to an American Airlines flight. The boarding was late and unorganized. The seating was extremely tight and uncomfortable. Will not use AA again.

Easy boarding, very friendly crew, short flight so no entertainment… needed cc for all food and drink purchases…. clean and on time … that is all that mattered… so overall very good.

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
Hounslow
Eastbourne
Ilford
Watford
Croydon
Slough
Guildford
Swindon
Worthing
High Wycombe
Harrow
Stratford-upon-Avon
Maidenhead

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.