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

Return flights

06 Sep - 09 Sep	China Eastern
05 Sep - 17 Sep	China Eastern
08 Sep - 15 Sep	China Eastern
07 Sep - 14 Sep	China Eastern
01 Sep - 08 Sep	China Eastern
10 Sep - 17 Sep	China Eastern
21 Sep - 13 Oct	China Eastern
22 Sep - 14 Oct	China Eastern
06 Sep - 13 Sep	China Eastern
10 Sep - 10 Oct	China Eastern
20 Sep - 27 Sep	China Eastern
21 Sep - 28 Sep	China Eastern
13 Sep - 20 Sep	China Eastern
20 Sep - 07 Oct	China Eastern
21 Sep - 08 Oct	China Eastern
30 Sep - 07 Oct	Shanghai Airlines
20 Sep - 04 Oct	Shanghai Airlines
27 Sep - 06 Oct	Shanghai Airlines
27 Sep - 10 Oct	Shanghai Airlines
29 Sep - 06 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 $808

Return flights