Cheap flights from Istanbul Airport to London from £55

In general, February is the cheapest month to fly from Istanbul Airport to London Heathrow Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £191. The month of January is another great option to travel to London Heathrow Airport, with average flight prices from Istanbul Airport averaging around £203.

On average, the least expensive day to fly to London Heathrow Airport from Istanbul Airport is on a Monday. momondo users have found tickets for Monday departures for as low as £228. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Wednesday as prices are generally higher than usual. According to our data, the average ticket price to London Heathrow Airport on Wednesday is £360.

According to our data, the cheapest time of day to fly to London Heathrow Airport is in the evening. momondo users have found flights departing from Istanbul Airport to London Heathrow Airport in the evening for as low as £181. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are £393 on average. Flights to London Heathrow Airport from Istanbul Airport in the morning are generally more expensive because this time of day is more convenient for travellers’ schedules.

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

You are more likely to see cheaper flights to London Heathrow Airport from Istanbul Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around £225 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London Heathrow Airport from Istanbul Airport for as low as £175 on momondo.

There are 3 cabin classes available to choose from on Istanbul to London Heathrow 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 15% of flights between Istanbul and London have experienced a delay on any given week. The average delay length over the past 12 months has been 111 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. Sunday has historically seen more delays on average compared to the rest of the week.

According to our data, British Airways have had the fewest delays on this route over the last 12 months, with about 13% of their flights experiencing any sort of delay.

As of February 2026, there are 29 flights per day flying from Istanbul Airport to London Heathrow Airport. The most common time of day flights depart is 08:00, with 40% of flights taking off in the afternoon.

The number of flights available between Istanbul Airport and London Heathrow Airport is 207 per week as of February 2026. The most frequent departure day is Tue, with 20% of weekly flights leaving on this day.