LHR

€34 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 8/1. 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
€73
Typical prices: €95-€143
British Airways
Mon 12/1Thu 15/1
DUB - LHR • Direct
Cheapest direct flights
€73
Typical prices: €95-€143
British Airways
Mon 12/1Thu 15/1
DUB - LHR • Direct
Top airlines
Aer Lingus
Most flights • 125 per week
Aer Lingus
Best reviews • 7.2 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Top routes
DUB-LHR
Cheapest
ORK-LHR
Most popular
Insights
Insights
Insights
Insights
When to travel
January
Cheapest • 17% price drop
November
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
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

Mon, 12 Jan - Thu, 15 Jan
British Airways Logo
20:40 - 22:00DUB-LHR
1h 20mdirect
British Airways Logo
06:30 - 07:55LHR-DUB
1h 25mdirect
€73British Airways
Find Deal
Mon, 12 Jan - Thu, 15 Jan
British Airways Logo
20:40 - 22:00DUB-LHR
1h 20mdirect
British Airways Logo
06:30 - 07:55LHR-DUB
1h 25mdirect
€73British Airways
Find Deal
Wed, 7 Jan - Wed, 21 Jan
British Airways Logo
20:40 - 22:00DUB-LHR
1h 20mdirect
British Airways Logo
10:40 - 12:10LHR-DUB
1h 30mdirect
€74British Airways
Find Deal
Wed, 14 Jan - Fri, 23 Jan
British Airways Logo
08:50 - 10:25DUB-LHR
1h 35mdirect
British Airways Logo
15:55 - 17:25LHR-DUB
1h 30mdirect
€75British Airways
Find Deal
Fri, 6 Feb - Sun, 8 Feb
British Airways Logo
20:35 - 21:55DUB-LHR
1h 20mdirect
British Airways Logo
08:25 - 09:50LHR-DUB
1h 25mdirect
€76British Airways
Find Deal
Sat, 6 Dec - Sun, 7 Dec
Aer Lingus Logo
13:00 - 14:30NOC-LHR
1h 30mdirect
Aer Lingus Logo
10:55 - 12:25LHR-NOC
1h 30mdirect
€109Aer Lingus
Find Deal
Thu, 8 Jan - Thu, 22 Jan
Aer Lingus Logo
07:50 - 09:15SNN-LHR
1h 25mdirect
Aer Lingus Logo
10:00 - 11:30LHR-SNN
1h 30mdirect
€116Aer Lingus
Find Deal
Sat, 10 Jan - Mon, 12 Jan
Aer Lingus Logo
17:25 - 18:50SNN-LHR
1h 25mdirect
Aer Lingus Logo
15:15 - 16:45LHR-SNN
1h 30mdirect
€117Aer Lingus
Find Deal
Thu, 18 Dec - Fri, 26 Dec
Aer Lingus Logo
17:30 - 18:55SNN-LHR
1h 25mdirect
Aer Lingus Logo
18:05 - 19:25LHR-SNN
1h 20mdirect
€117Aer Lingus
Find Deal
Sat, 10 Jan - Sat, 17 Jan
Multiple Airlines Logo
10:30 - 15:35KIR-LHR
5h 05m1 stop
Multiple Airlines Logo
20:45 - 10:00LHR-KIR
13h 15m1 stop
€185Multiple Airlines
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 lowest price for a flight to London Heathrow Airport was €34 for a one-way ticket from Dublin and €73 for a return. The most popular route searched for by our users was for flights from Cork to London Heathrow Airport and the best return deal found in the last 3 days was €119.

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.

On average, a flight to London Heathrow Airport costs €512. The cheapest price found on KAYAK in the last 2 weeks cost €46 and departed from Dublin. The most popular routes on KAYAK are Dublin to London Heathrow Airport which costs €652 on average, and Shannon to London Heathrow Airport, which costs €553 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 March, where tickets cost €108 on average for one-way flights. On the other hand, the most expensive months are June and October, where the average cost of tickets from Ireland is €210 and €186 respectively. For return trips, the best month to travel is January with an average price of €120.

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 €55 one-way - €139 return, from Cork €79 one-way - €260 return, from Dublin €108 one-way - €185 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 3 weeks before departure. For the absolute cheapest price, our data suggests you should book 66 days before departure.

Good to know – Book Cheap London Heathrow Airport Plane Tickets

Low seasonSeptember
Cheapest flight€34
Best time to beat the crowds but there is an average 3% increase in price.
Most popular time to fly (3% 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 lowest price for a flight to London Heathrow Airport was €34 for a one-way ticket from Dublin and €73 for a return. The most popular route searched for by our users was for flights from Cork to London Heathrow Airport and the best return deal found in the last 3 days was €119.

  • 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 €512. The cheapest price found on KAYAK in the last 2 weeks cost €46 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 tickets can be as cheap as €512. On the other hand, the most expensive day to fly is Sunday, where prices are €708 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 flights cost €215 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 €783.

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 €97, from Shannon €143, from Dublin €909
  • 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, +86 more

ANA, AccesRail, +87 more

Tuesday

ANA, AccesRail, Aegean Airlines, +85 more

ANA, AccesRail, +86 more

Wednesday

ANA, AccesRail, Aegean Airlines, +89 more

ANA, AccesRail, +90 more

Thursday

ANA, AccesRail, Aegean Airlines, +83 more

ANA, AccesRail, +84 more

Friday

ANA, AccesRail, Aegean Airlines, +94 more

ANA, AccesRail, +95 more

Saturday

ANA, AccesRail, Aegean Airlines, +90 more

ANA, AccesRail, +91 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, +86 more

ANA, AccesRail, +87 more

Tuesday

ANA, AccesRail, Aegean Airlines, +85 more

ANA, AccesRail, +86 more

Wednesday

ANA, AccesRail, Aegean Airlines, +89 more

ANA, AccesRail, +90 more

Thursday

ANA, AccesRail, Aegean Airlines, +83 more

ANA, AccesRail, +84 more

Friday

ANA, AccesRail, Aegean Airlines, +94 more

ANA, AccesRail, +95 more

Saturday

ANA, AccesRail, Aegean Airlines, +90 more

ANA, AccesRail, +91 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 1382 reviews
6.9Entertainment
7.4Boarding
6.6Food
7.1Comfort
8.0Crew
Airline reviews

Seats are small, but comfortable and more space around you, so for a normal person the seats are perfect. If you are a big and fat individual, I would not think the seats are comfortable. All else was good and normal. Lots of movies to watch.

10.0 ExcellentPAULINA, Nov 2025DUB - LAS
Read more Aer Lingus reviews

Seats are small, but comfortable and more space around you, so for a normal person the seats are perfect. If you are a big and fat individual, I would not think the seats are comfortable. All else was good and normal. Lots of movies to watch.

Customer service was excellent! The app was terrible, tried several times to check in without success! But the young lady that checked us in was absolutely terrific and helpful.

The same as I stated prior. We incurred extra costs that should be reimbursed, given we were not communicated with about schedule changes.

Experience was great overall. However, the connection time between my flights (1hr 15 mins) was too short. We had to get through security check and US immigration in that time, and I made it to the gate just as they were announcing it was about to close. Flights with such a short connection time should maybe not be offered for purchase, or an advance alert would be helpful. Other than that the in-flight experience was excellent, especially the food. Many thanks!

The seats needs to be comfortables, at least please add more padding to the seats.

Incredible service. Incredible entertainment. I felt like they just kept serving us something new avery hour. My wife and I both had a joyous flight.

They out me in the baby row so I was surrounded by toddlers, they also did not send my luggage and was not able to book my connecting flight

I was so grateful for the kindness of the crew. They made a long trip very pleasant. Food was delicious. Many movie options

My flight from Dublin was delayed two hours which ment that I missed my connecting flight to Phoenix. American Airlines provided a hotel room and rebooked my flight for 7:30 AM the next day. I didn't get to the room until 11 pm and I had to be at the airport the next day by 5 AM. The airlines did their best but the schedule was challenging for an 81 year old.

Dinner was fabulous. Would have enjoyed a wine with it. None offered... for sale??? Breakfast was disappointing but adequate amount of food.

Not only were the aircrafts spacious, but the crew was friendly and efficient. I was so gracious for the included meals on the longer flight (8+ hours).

Smooth trip no turbulence which is always a bonus for me lol! In cattle class so an element of being a bit squished (but not as bad as other shorter haul airlines) smaller plane than the one we flew out on and entertainment system wasn’t as modern but still definitely passed the time. Lovely crew x

The check-in baggage belt was broken (which is understandable) but what was surprising is they would check you in, give a baggage tag and then you have to drag the baggage to a different counter at the end of airport. No vegetarian option in in-flight meal. British Airways remains the worst big name airlines and always my last option while booking.

Decrepit planes, poor business class layout designed to maximize revenue, no decent movie selection.

Entertainment did not work from DC to London. Was not able to check in online during my return journey from Mumbai to London. Food was good!

The to flight was excellent but the return flight the seats seemed not cushioning enough.

⭐ British Airways Review — A Journey of Highs, Lows, and Lessons ⭐ I recently flew Business Class round-trip from Boston to Mumbai with British Airways, and my experience was a tale of two extremes — from disappointment to exceptional service, and then back to inconsistency. Boston → London: A Surprisingly Poor Start My journey began on a disappointing note. On a 6-hour Business Class flight, I was surprised to discover that there wasn’t a single proper vegetarian meal option available. I was offered a few bakery items only after repeatedly requesting something to eat. The flight attendant shrugged, offered no solution, and eventually — quite literally — threw some bread at me after much delay. This was not only disheartening, it was extremely surprising given my wonderful Business Class experience with BA last year. I stepped off that flight genuinely hungry and had to make a mad dash to the lounge just to get a proper meal. London → Mumbai: A Complete Turnaround The next sector restored my faith in British Airways. The entire crew was warm, welcoming, attentive, and genuinely caring. A special shoutout to Phiroze, Sara and the entire team serving the Business Class cabin — their professionalism, hospitality, and thoughtful service were extraordinary. They truly embodied what makes British Airways a global leader, and I am deeply grateful for the experience they provided. This is the BA I know and love. Mumbai → London: A Strange Meal Schedule This sector was generally fine, but the meal timing was puzzling. Lunch at 10:30 AM — for a Business cabin — felt unusual, and most passengers, including myself, barely touched it. The rest of the service was smooth, but the scheduling definitely needs a rethink. London → Boston: Mixed Experience Again The flight itself was decent, but the Business Lounge at Heathrow for this leg was a letdown. Arrived during lunch hours: no hot vegetarian options available Lounge area: dirty dishes everywhere Even after politely alerting the staff, the dishes were ignored and left uncleared For a premium cabin passenger — and at one of the world’s busiest international hubs — this was disappointing. Overall Impression My journey with British Airways felt inconsistent — two great sectors sandwiched between two that fell short of the BA standard. When BA is good, it is world-class. When it misses, the gap is noticeable. I genuinely hope the airline takes this feedback as constructive insight. I continue to believe in British Airways, and I commend the outstanding crew on the London → Mumbai sector — they were the highlight of my entire trip. With a little more focus on vegetarian meal availability, lounge service, and consistency across crews, BA can ensure every Business Class passenger experiences the premium journey they promise.

For a business class ticket the service was very mediocre. We had to ask for coffee after a meal and the service was grudging like we were putting them out. The leg from BOM to LHR was especially bad and the toilets had no water. It was disgusting. Looks like self service is the new model for Business Class. No Thank you. I will look elsewhere

The boarding process was very poorly organized. Too many people had way to much carry on and resulted in loading overhead bins being the gating factor. Time for change.

I do not understand how BA takes coach seating and has people paying for business class. There is no leg room, seats don’t recline and no entertainment to be had unless you brought your own.

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Everything you need to know for your flight to Heathrow

Information on the airport you'll fly into in London