AirHint found the following cheapest return flights from Dortmund (DTM) to London (STN) in September 2025 (see full year).

Return flights

29 Sep - 02 Oct	Wizz Air
30 Sep - 01 Oct	Wizz Air
30 Sep - 02 Oct	Wizz Air
29 Sep - 01 Oct	Wizz Air
29 Sep - 30 Sep	Wizz Air
22 Sep - 30 Sep	Wizz Air
27 Sep - 01 Oct	Wizz Air
28 Sep - 02 Oct	Wizz Air
24 Sep - 26 Sep	Wizz Air
29 Sep - 03 Oct	Wizz Air
22 Sep - 01 Oct	Wizz Air
27 Sep - 28 Sep	Wizz Air
22 Sep - 29 Sep	Wizz Air
28 Sep - 03 Oct	Wizz Air
22 Sep - 23 Sep	Wizz Air
25 Sep - 30 Sep	Wizz Air
19 Sep - 21 Sep	Pegasus Airlines
29 Sep - 05 Oct	Wizz Air
27 Sep - 27 Sep	Wizz Air
24 Sep - 25 Sep	Eurowings

Also check the deals for one-way flights from Dortmund 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 Dortmund to London in September from $165

Return flights