Cheap flights from London Heathrow Airport to Istanbul from $175

The month of November is, on average, the cheapest month to fly to Istanbul from London Heathrow Airport, with most prices found around $344. The month of January is another great option to travel to Istanbul, with average flight prices from London Heathrow Airport averaging around $356.

The cheapest day to depart on your flight to Istanbul is on a Sunday when prices can be found for as low as $1,255. This is often the case because there is less demand to fly during this day of the week. When flying out on a Monday, the most expensive travel day of the week, you can expect to see flight prices from London Heathrow Airport to Istanbul for around $1,711.

At midday is the cheapest time of day to fly from London Heathrow Airport to Istanbul when you can find flight prices for as low as $426. Flying to Istanbul at midday is an ideal time because this is during off-peak travel hours. Try not to purchase tickets in the evening because they tend to be around $1,753. 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 $439 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 $374 on momondo.

There are 3 cabin classes available to choose from on London Heathrow 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 124 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 9% of their flights experiencing any sort of delay.

37 flights are operational daily from London Heathrow Airport to Istanbul as of March 2026. The most popular departure time for this route is 22:00, with 41% of flights per day taking off at midday.

As of March 2026, 260 flights take off from London Heathrow Airport and land in Istanbul each week. The most common flight departure day for this route is Sat, with 19% of weekly flights taking off on this day.