Cheap flights from London Heathrow Airport to Istanbul from £85

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 £182. If you are unable to visit Istanbul Airport during the month of November, then departing from London Heathrow Airport during the month January is also very affordable. Most momondo users find prices during this month for around £188.

The cheapest day to depart from London Heathrow Airport to Istanbul Airport is on a Monday. Travellers who choose to depart for Istanbul Airport on a Monday will often find tickets for as low as £526. The most expensive day to fly to Istanbul Airport is Saturday, with ticket prices averaging around £569.

Flying to Istanbul Airport from London Heathrow Airport at midday is the least expensive time of day to depart. momondo users have found prices as low as £279 when looking at flights departing at midday. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are £572 on average. Flights to Istanbul Airport from London Heathrow Airport in the afternoon are generally more expensive because this time of day is more convenient for travellers’ schedules.

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 £232 when searching weeks before you fly. 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 £198 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.

No. A direct flight is the cheapest option for a flight between London Heathrow Airport to Istanbul Airport.

As of March 2026, prices for London Heathrow Airport to Istanbul Airport flights are approximately 19% more expensive when compared to flights at the same time last year.

Air Serbia, KLM, and British Airways are the most popular carriers operating from London Heathrow to Istanbul

Turkish Airlines, British Airways and LOT are the top three most popular airlines that fly to Istanbul Airport from London Heathrow Airport according to our data. Turkish Airlines is the first choice among our users, with 55% of people opting to fly with this airline when travelling to Istanbul Airport. Keep in mind that there are 13 different airlines that fly to Istanbul Airport on a routine basis, so you have a few additional options to choose from.

Historically, on average around 10% 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 125 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.

Frankfurt am Main (FRA) was the most common stop: 43% of momondo users choosing one-stop flights on this route connected there.

Flights via Paris (CDG) offer the lowest average return price of £176.

Flights connecting via Copenhagen (CPH) have the shortest average one-way travel time: 7h 00m.

Copenhagen (CPH) has the shortest average stopover time for this route: 1h 29m.

25 flights are operational daily from London Heathrow Airport to Istanbul Airport as of March 2026. The most popular departure time for this route is 22:00, with 40% of flights per day taking off in the afternoon.

As of March 2026, 179 flights take off from London Heathrow Airport and land in Istanbul Airport each week. The most common flight departure day for this route is Tue, with 23% of weekly flights taking off on this day.