AirHint found the following cheapest return flights from Taipei (TSA) to London (LGW) in September 2025 (see full year).

Return flights

07 Sep - 10 Sep	China Eastern
04 Sep - 18 Sep	Eastar Jet
13 Sep - 20 Sep	China Eastern
18 Sep - 21 Sep	China Eastern
13 Sep - 21 Sep	China Eastern
12 Sep - 18 Sep	China Eastern
03 Sep - 22 Sep	China Eastern
06 Sep - 13 Sep	China Eastern
10 Sep - 14 Sep	China Eastern
08 Sep - 23 Sep	China Eastern
14 Sep - 14 Oct	China Eastern
21 Sep - 05 Oct	China Eastern
27 Sep - 05 Oct	China Eastern
18 Sep - 20 Oct	China Eastern
27 Sep - 02 Oct	China Eastern
19 Sep - 04 Oct	Xiamen Airlines
27 Sep - 01 Oct	China Eastern
24 Sep - 09 Oct	China Eastern
23 Sep - 08 Oct	China Eastern
30 Sep - 11 Oct	China Eastern

Also check the deals for one-way flights from Taipei 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.

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Cheapest return flights from Taipei to London in September from 682€

Return flights