LHR

€40 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 23/9. 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, 0 bags

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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Everything you should know

Cheapest return fare
€74
Typical prices: €192-€128
British Airways
Tue 23/6Tue 30/6
DUB - LHR • Direct
Cheapest one-way flight
€40
Typical prices: €69-€119
British Airways
Wed 23/9
DUB - LHR • Direct
Top airlines
Most flights • 142 per week
Best reviews • 7.3 score
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Top routes
Cheapest
Most popular
Insights
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When to book
in advance
Our data shows that travellers who book at least 6 weeks in advance save around 37% compared to booking last minute.
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When to travel
Cheapest • 20% price drop
Most popular
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KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to Heathrow!
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

Tue, 23 Jun - Tue, 30 Jun
British Airways Logo
20:25 - 21:40
DUB
-
LHR
1h 15mdirect
British Airways Logo
18:10 - 19:35
LHR
-
DUB
1h 25mdirect
€74British Airways
Sat, 12 Sep - Sun, 20 Sep
British Airways Logo
20:15 - 21:30
DUB
-
LHR
1h 15mdirect
British Airways Logo
06:20 - 07:45
LHR
-
DUB
1h 25mdirect
€91British Airways
Wed, 8 Jul - Thu, 16 Jul
British Airways Logo
19:45 - 21:00
DUB
-
LHR
1h 15mdirect
British Airways Logo
06:20 - 07:45
LHR
-
DUB
1h 25mdirect
€95British Airways
Wed, 8 Jul - Tue, 28 Jul
British Airways Logo
19:45 - 21:00
DUB
-
LHR
1h 15mdirect
British Airways Logo
18:10 - 19:35
LHR
-
DUB
1h 25mdirect
€96British Airways
Wed, 8 Jul - Tue, 28 Jul
British Airways Logo
19:45 - 21:00
DUB
-
LHR
1h 15mdirect
British Airways Logo
18:10 - 19:35
LHR
-
DUB
1h 25mdirect
€96British Airways
Wed, 10 Jun - Wed, 17 Jun
Aer Lingus Logo
13:05 - 14:30
NOC
-
LHR
1h 25mdirect
Aer Lingus Logo
11:05 - 12:35
LHR
-
NOC
1h 30mdirect
€105Aer Lingus
Tue, 9 Jun - Wed, 17 Jun
Aer Lingus Logo
13:05 - 14:30
NOC
-
LHR
1h 25mdirect
Aer Lingus Logo
11:05 - 12:35
LHR
-
NOC
1h 30mdirect
€107Aer Lingus
Wed, 10 Jun - Sat, 13 Jun
Aer Lingus Logo
13:05 - 14:30
NOC
-
LHR
1h 25mdirect
Aer Lingus Logo
11:05 - 12:35
LHR
-
NOC
1h 30mdirect
€108Aer Lingus
Wed, 10 Jun - Wed, 17 Jun
Aer Lingus Logo
21:15 - 22:40
SNN
-
LHR
1h 25mdirect
Aer Lingus Logo
14:40 - 16:10
LHR
-
SNN
1h 30mdirect
€108Aer Lingus
Mon, 8 Jun - Tue, 16 Jun
Multiple Airlines Logo
10:50 - 20:20
KIR
-
LHR
9h 30m
1 stop
Multiple Airlines Logo
13:25 - 17:35
LHR
-
KIR
4h 10m
1 stop
€204Multiple Airlines
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 3 days.

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 €114 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 €567 on average. The cheapest price found on KAYAK in the last 2 weeks cost €63 and departed from Shannon. The most popular routes on KAYAK are Dublin to London Heathrow Airport which costs €857 on average, and Shannon to London Heathrow Airport, which costs €869 on average.

See prices from:

What is the cheapest day to fly to London?

The average price of all round-trip flights to London Heathrow Airport clicked on KAYAK for each day over the last 12 months.

Based on KAYAK data, the cheapest day to fly to London is Friday where round-trip tickets can be as cheap as €596. On the other hand, the most expensive day to fly is Sunday, where round-trip prices are €744 on average.

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 €117 on average for return flights. On the other hand, the most expensive months are April and August, where the average cost of tickets from Ireland is €165 and €163 respectively. For one-way flights, the best month to travel is January with an average price of €130.

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

The average price for all round-trip flights to London Heathrow Airport depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.

The cheapest time of day to fly to London Heathrow Airport is generally at night, when round-trip flights cost €496 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 €832.

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 Cork €200 return, from Dublin €572 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 6 weeks before departure, which saves you about 37% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 22 weeks before departure.

Good to know – Book Cheap London Heathrow Airport Plane Tickets

Low seasonFebruary
Cheapest flight€40
Best time to beat the crowds (15% less expensive on average)
Most popular time to fly (6% 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 €114 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 €567. The cheapest price found on KAYAK in the last 2 weeks cost €63 and departed from Shannon Airport.

  • 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.

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 Cork €309, from Shannon €632, from Dublin €708
  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest London Heathrow Airport flight deals.

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.
7.3
Aer LingusOverall score based on 1576 reviews
8.1Crew
7.2Comfort
6.7Food
7.4Boarding
7.0Entertainment
Airline reviews

I sat in the first row behind first class. There was plenty of legroom. The entertainment was great. I saw two excellent movies and one episode of a sitcom. Also enjoyed the flight tracker.

10.0 ExcellentAnthon, Apr 2026
DUB - BOS
Read more Aer Lingus reviews

I sat in the first row behind first class. There was plenty of legroom. The entertainment was great. I saw two excellent movies and one episode of a sitcom. Also enjoyed the flight tracker.

On time, only a little turbulence, very competent and caring attendants. Clear information.

The flights are literally always delayed arriving, boarding and taking off so they are always late for the connection. I planned ahead so I was okay but many others aren't. The food was terrible. The staff was very pleasant. I appreciate boarding back to front.

On a four hour delayed flight now on seats back end of the plane instead front-

My issue is with the SkyWest terminal. The flight was not listed on the main airport flight screen list, and I had to do a Google search to locate the terminal and gate. We had to ask several airport employees where to locate the phantom gate. The airport did not provide adequate signage and was confusing. When we arrived, there was one vendor providing services that quickly closed, leaving zero options for food and drink while we waited hours for our delayed flight. The crew that assisted with check-in and boarding was VERY friendly.

Economy seats a bit small but other than that it was all good.

Checked in ok for 3 flights at the airport check-in desk, but apparently I was not checked in to my connecting flights even though I was assured that I was and had seats on all 3 flights. Aer Lingus departure was also delayed for 1.5 hours which gave no time to collect bags to go through customs.

No complimentary drinks or snacks offered on a 2 hour flight was disappointing but everything else went well

There was a 6h delay with limited updates . When we got to Manchester the bus took ages to get to arrivals and we missed our train, dinner reservation. Basically lost a whole day due to arrivals Lingus!!

All aspects were excellent - it helped that the flight was only 2/3 full and I had no one sitting in my row. The Pre-check (US Passport Control and Customs) in Dublin made everything so easy when we arrived in Chicago.

I liked the air hostesses, but no wifi was available for flight. my original flight was canceled and rebooking was difficult and no reason was given for cancellation. Business class cabin was nice and spacious.

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

3.5 hr delay leaving Pittsburgh, notifications for which were incomplete and untimely. Connecting flight was automatically switched to one requiring more than a 30 hour layover! After waiting in a long queue, customer service reduced layover to 11 hours and also set up an earlier standby. The standby had empty seats, but the gate agent couldn't change our tickets! On top of all that my luggage was lost and has yet to even be located, much less returned 5 (FIVE!) days later. Too bad there's no rating below poor.

Significant delays on the return blamed on weather. Otherwise pleasant and helpful staff. Overcooked chicken on return limited options for dinner.

Canceled flight late London to Florence. Help at airport very poor. Treated poorly. Had to sleep in the airport. Lost bags- still do not have them. Horrible. I should be reimbursed!

The seats are extra cramped if you are taller than 5’8! Spring for the extra legroom seats for sure if you have a long flight!

Very disappointed with British Airways. It has been over 24 hours and I still have not received my checked baggage or any proper update. Customer support has been unresponsive, making the situation even more frustrating. Poor baggage handling and lack of communication seriously impacted my travel experience.

Flight was good but temp in the cabin was cold.

Service onboard is one of the best nowadays, on top of the regular meals they offer more drinks during the whole flight and crew is super nice and helpful. I truly enjoy to fly in BA.

I like American Airlines and their safety record. They provide quality service and a feel safe enough to prefer American Airlines over other carriers even if I have to pay a little more.

Travelling to a place near Heathrow?

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

Everything you need to know for your flight to Heathrow

Information on the airport you'll fly into in London