Cheapest return flights from London to Istanbul in December from $168

Best time to book flights for London (LHR) to Istanbul (IST) flights at AirHint

AirHint found the following cheapest return flights from London (LHR) to Istanbul (IST) in December 2025 (see full year).

Return flights

05 Dec - 07 Dec British Airways direct
01 Dec - 07 Dec British Airways direct
11 Dec - 23 Dec Air France
16 Dec - 23 Dec Air France
16 Dec - 20 Dec Air France
17 Dec - 20 Dec Air France
19 Dec - 22 Dec Lufthansa
14 Dec - 28 Dec Lufthansa
14 Dec - 17 Dec KLM
11 Dec - 28 Dec Lufthansa

Also check the deals for one-way flights from London to Istanbul in December.

Skyscanner

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

Book a cheap hotel in Istanbul

Cheap car rent in Istanbul