Cheap flights from London Heathrow Airport to Istanbul from C$ 158

In general, November is the cheapest month to fly from London Heathrow Airport to Istanbul Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around C$ 346. If you aren’t able to travel during the month of November, then book flights to Istanbul Airport from London Heathrow Airport during January instead. Flights to Istanbul Airport in January, while not as cheap as those in November, still average around C$ 351.

The cheapest day to depart from London Heathrow Airport to Istanbul Airport is on a Tuesday. Travellers who choose to depart for Istanbul Airport on a Tuesday will often find tickets for as low as C$ 291. Be sure to avoid booking your departure on a Sunday as prices are generally higher than usual. According to our data, the average ticket price to Istanbul Airport on Sunday is C$ 676.

Our data shows that the cheapest London Heathrow Airport to Istanbul Airport flights are usually those with departure times at noon. Our users have found flights to Istanbul Airport at noon for as low as C$ 202. In contrast, the most expensive time of day to depart to Istanbul Airport is in the afternoon when prices are around C$ 745.

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

You are more likely to see cheaper flights to Istanbul Airport from London Heathrow Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Istanbul Airport for around C$ 452 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Istanbul Airport from London Heathrow Airport for as low as C$ 418 on momondo.

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

You could potentially save up to 13% on your flight if you consider stops on a London Heathrow Airport to Istanbul Airport flight.

As of September 2026, prices for London Heathrow Airport to Istanbul Airport flights are approximately 14% cheaper when compared to flights at the same time last year.

Historically, on average around 8% 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 has had the least delays on this route over the last 12 months, with about 8% of their flights experiencing any sort of delay.

As of September 2026, there are 30 flights per day flying from London Heathrow Airport to Istanbul Airport. The most common time of day flights depart is 4:00p.m., with 35% of flights taking off at noon.

The number of flights available between London Heathrow Airport and Istanbul Airport is 213 per week as of September 2026. The most frequent departure day is Tue, with 22% of weekly flights leaving on this day.