How often are LHR to IST flights on time?

Flights from London (LHR) to Istanbul (IST) arrive on time 66% of the time across 15,121 flights of official data.

Which airline is most reliable on the LHR to IST route?

Turkish Airlines has the best on-time record on this route at 66% across 10,809 flights.

Route reliability

Flights from London to Istanbul arrive on time 66% of the time across 15,121 flights. Here’s how each airline really performs.

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On-time rate

15,121 flights

Airline	On-time	Flights
Turkish Airlines	66%	10,809
British Airways	65%	4,312

On-time = arrived within 15 minutes of schedule, per UK CAA. Compare the reverse leg IST → LHR.

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Score real LHR–IST flights on reliability, weather, and connection safety — not just price.

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