Cheap Flights from Istanbul (ISL) to London (LHR)

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Find available prices by choosing your travel dates.
Flights from Istanbul (ISL) to London (LHR)
Origin airport
Ataturk Intl.
Destination airport
Heathrow
Distance
1561 mi

Istanbul to London Flights

The cheapest times to fly from Istanbul to London

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Istanbul to London are during the month of . You can find some of the cheapest flights from Istanbul to London with Expedia's search tool and vast selection of airlines.

The best time to book a flight from Istanbul to London

Sunday is one of the best days to book for cheap flights from Istanbul to London: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

How to find cheap round-trip tickets from Istanbul to London

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Istanbul to London in 2025. You can also book with separate airlines for your outbound and return journeys, from one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Istanbul to London flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

You could also save big by booking one of Expedia's vacation packages. Bundling together your Istanbul to London airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

*Terms apply.

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

Frequently asked questions

How long does it take to fly from Istanbul Airport to London Heathrow?
A direct flight with Turkish Airlines takes approximately 3 hours and 55 minutes. Hop on the 1:10PM flight from ISL and land at LHR at 3:05PM. Clinch a great deal on this route when you book with Expedia.
Is it cheaper to buy a plane ticket from Ataturk Intl. Airport (IST) to LHR last minute?
Being a spontaneous soul is a wonderful way to travel, but it’s not necessarily the wisest way to get your hands on a cheap plane ticket. It’s better to book your Ataturk Intl. Airport (IST) to London Heathrow trip well in advance rather than leaving it to the last minute. Based on flight pricing and demand studies in 2022, we have found that the best time to book domestic flights is between 28 – 35 days ahead of the departure date, and international flights three to four months in advance. Save all that spontaneity for when you reach London Heathrow!
What airline has the least delays from Istanbul Airport to London Heathrow?
If you’d prefer not to be stuck at the airport for hours — or worse, your travel plans left in tatters due to a flight delay — opt for Turkish Airlines. Around 67% of its ISL to LHR services are on time. You can review your flight status before making your way to the airport through the Expedia App. It also delivers real-time alerts about a bunch of other useful things, such as gate changes and directions to your hotel. You’ll have all the details in your pocket with our handy travel companion.
What airports do you fly into for London from Istanbul?
Heathrow Airport (LHR), London City Airport (LCY) and Gatwick Airport (LGW) are your choices when flying from Istanbul to London. Around 14 mi west of the heart of London, Heathrow Airport (LHR) is the city’s major gateway. Consider things such as flight schedules and the distance to your hotel before settling on an airport. Big Ben and Buckingham Palace are two top attractions to visit when you arrive.
What are the most popular departure times for flights from Ataturk Intl. Airport (IST) to LHR?
Between 7:00 AM - 8:00 AM is when you’ll find lots of Turkish Airlines flights from ISL to Heathrow Airport (LHR). Our useful tip? Book a journey that departs sometime in the morning. With air traffic yet to build up around airports, your chances of hopping on a delay-free flight are higher.
Can I change the date of my flight from Ataturk Intl. Airport (IST) to LHR?
Quickly make changes to your Istanbul Airport to Heathrow Airport flight through the Expedia Trips portal. But before you make any adjustments, check the fare conditions in your itinerary to learn what you can do and if any charges apply. Some airlines have a change fee per person, plus any difference in prices. But if you booked in the last 24 hours, you may be able to cancel for free and book new flights. You can also swing by our Customer Service portal for further details and to chat with our Virtual Agent.

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