Cheap flights from London Heathrow Airport to Istanbul from C$ 170

The month of November is, on average, the cheapest month to fly to Istanbul from London Heathrow Airport, with most prices found around C$ 331. If you don’t want to visit Istanbul in November, then you should wait until January to fly from London Heathrow Airport, when ticket prices are also cheap, with an average price of C$ 342.

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 C$ 271. The most expensive day to fly to Istanbul is Thursday, with ticket prices averaging around C$ 458.

According to our data, the cheapest time of day to fly to Istanbul is in the evening. momondo users have found flights departing from London Heathrow Airport to Istanbul in the evening for as low as C$ 215. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In contrast, the most expensive time of day to depart to Istanbul is in the morning when prices are around C$ 706.

Fly from London Heathrow to Istanbul Sabiha Gokcen 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 C$ 422 when searching weeks out. 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 C$ 360 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 has had the least delays on this route over the last 12 months, with about 9% of their flights experiencing any sort of delay.

As of March 2026, 30 flights take off from London Heathrow Airport and land in Istanbul each day. The most common flight departure time for this route is 10:00p.m., with 39% of daily flights taking off in the afternoon.

As of March 2026, 212 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 23% of weekly flights taking off on this day.