AirHint found the following cheapest return flights from London (YXU) to Istanbul (IST) in October 2025 (see full year).
Return flights
| 31 Oct - 05 Nov | Lufthansa | ||
| 31 Oct - 07 Nov | WestJet | ||
| 30 Oct - 06 Nov | Air Canada | ||
| 27 Oct - 31 Oct | Air Canada |
Also check the deals for one-way flights from London to Istanbul in October.
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