Cheapest return flights from London to Copenhagen in September from $235

Best time to book flights for London (LCY) to Copenhagen (CPH) flights at AirHint

AirHint found the following cheapest return flights from London (LCY) to Copenhagen (CPH) in September 2025 (see full year).

Return flights

10 Sep - 14 Sep SWISS
18 Sep - 23 Sep SWISS
12 Sep - 16 Sep SWISS
26 Sep - 28 Sep SWISS
05 Sep - 07 Sep SWISS
11 Sep - 14 Sep SWISS
04 Sep - 09 Sep SWISS
16 Sep - 23 Sep SWISS
18 Sep - 21 Sep SWISS
12 Sep - 14 Sep SWISS
23 Sep - 04 Oct KLM
23 Sep - 12 Oct KLM
27 Sep - 03 Oct SWISS

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

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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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