How often are IST to LHR flights on time?

Flights from Istanbul (IST) to London (LHR) arrive on time 69% of the time across 15,105 flights of official data.

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

British Airways has the best on-time record on this route at 72% across 4,329 flights.

Route reliability

Flights from Istanbul to London arrive on time 69% of the time across 15,105 flights. Here’s how each airline really performs.

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On-time rate

15,105 flights

Airline	On-time	Flights
British Airways	72%	4,329
Turkish Airlines	68%	10,776

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

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

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