AirHint found the following cheapest return flights from Islamabad (ISB) to London (LTN) in September 2026 (see full year).
Return flights
| 23 Sep - 30 Sep | Etihad Airways | ||
| 28 Sep - 05 Oct | Etihad Airways | ||
| 15 Sep - 25 Sep | Fly Jinnah | ||
| 02 Sep - 09 Sep | PIA | ||
| 18 Sep - 29 Sep | PIA | ||
| 22 Sep - 29 Sep | PIA | ||
| 30 Sep - 07 Oct | Turkish Airlines |
Also check the deals for one-way flights from Islamabad to London in September.
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