AirHint found the following cheapest return flights from Istanbul (SAW) to London (LTN) in September 2025 (see full year).

Return flights

15 Sep - 22 Sep	AJet
22 Sep - 29 Sep	AJet
17 Sep - 22 Sep	AJet
25 Sep - 01 Oct	Pegasus Airlines
11 Sep - 15 Sep	Pegasus Airlines
13 Sep - 17 Sep	Pegasus Airlines
15 Sep - 21 Sep	AJet
17 Sep - 21 Sep	AJet
19 Sep - 23 Sep	AJet
16 Sep - 22 Sep	AJet
16 Sep - 19 Sep	AJet
26 Sep - 01 Oct	AJet
29 Sep - 06 Oct	AJet
18 Sep - 01 Oct	AJet
19 Sep - 10 Oct	AJet
28 Sep - 03 Oct	Pegasus Airlines
24 Sep - 01 Oct	Pegasus Airlines
29 Sep - 02 Oct	Pegasus Airlines
18 Sep - 03 Oct	Pegasus Airlines
29 Sep - 05 Oct	Pegasus Airlines

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

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 London

Cheap car rent in London

Cheapest return flights from Istanbul to London in September from 121€

Return flights