Cheap Flights from Istanbul to London

Q: How much does a flight from IST to LHR cost?

Fares from IST to LHR have recently started around GBP $250 for economy when booked in advance. Prices change daily with demand and season — use the live search above to see today's lowest fares across 600+ airlines and travel sites.

Q: What is the cheapest time to fly from IST to LHR?

Fares on IST to LHR are usually lowest outside school holidays and peak season. Booking 4–8 weeks in advance and flying mid-week (Tuesday or Wednesday) typically returns the best prices. Set a price alert so you're notified when fares drop.

Q: Is it better to book IST to LHR one-way or round-trip?

On most IST to LHR itineraries a round-trip ticket works out cheaper per leg than two separate one-ways, but this isn't always true on budget carriers. Compare both in the live search above before booking.

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Fly from the Bosphorus to the Thames. Compare Turkish Airlines and BA for the best fares.

Best time to book IST to LHR

For the IST to LHR route, fares are typically lowest when you book 4–8 weeks ahead and fly mid-week (Tuesday or Wednesday). Avoiding school holidays and the summer peak usually unlocks the lowest prices.

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Pro tip

Set a price alert and run a flexible-date search — moving your trip by a day or two on IST–LHR can change the fare significantly.

IST to LHR flights — FAQ

How much does a flight from IST to LHR cost? +

What is the cheapest time to fly from IST to LHR? +

Is it better to book IST to LHR one-way or round-trip? +

Route at a glance

Lowest price found: GBP $250
From: IST (IST)
To: LHR (LHR)

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All flights from IST → All flights to LHR → How to find cheap flights in 2026 →