Cheap flights from London Heathrow Airport to Istanbul from €108

The month of January is another great option to travel to Istanbul, with average flight prices from London Heathrow Airport averaging around €216.

The cheapest day to depart from London Heathrow Airport to Istanbul is on a Monday. Travellers who choose to depart for Istanbul on a Monday will often find tickets for as low as €396. When flying out on a Friday, the most expensive travel day of the week, you can expect to see flight prices from London Heathrow Airport to Istanbul for around €1,077.

Our most recent data shows that the best time of day to fly to Istanbul is at midday. Flights from London Heathrow Airport to Istanbul during this time can be as low as €223. Try not to purchase tickets in the afternoon because they tend to be around €840. Of course, these prices can vary depending on the time of year and what airport you fly to.

Fly from London Heathrow to Istanbul for the best London Heathrow - Istanbul flight prices

You are more likely to see cheaper flights to Istanbul from London Heathrow Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Istanbul for around €277 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Istanbul from London Heathrow Airport for as low as €257 on momondo.

There are 2 cabin classes available to choose from on London Heathrow Airport to Istanbul flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Historically, on average around 9% of flights between London and Istanbul have experienced a delay on any given week. The average delay length over the past 12 months has been 123 minutes.

Generally, flights departing at night tend to experience fewer delays. Flights departing in the early afternoon have, in the past, seen delays more frequently in comparison.

Tuesday is statistically the day of the week that experiences the fewest delays on this flight route. Wednesday has historically seen more delays on average compared to the rest of the week.

According to our data, Turkish Airlines have had the fewest delays on this route over the last 12 months, with about 8% of their flights experiencing any sort of delay.

The number of flights available between London Heathrow Airport and Istanbul is 33 per day as of September 2026. The most frequent departure time is 16:00, with 38% of daily flights leaving in the evening.

As of September 2026, 236 flights take off from London Heathrow Airport and land in Istanbul each week. The most common flight departure day for this route is Sun, with 19% of weekly flights taking off on this day.