Cheapest return flights from London to Cologne in September from $138

Best time to book flights for London (LHR) to Cologne (CGN) flights at AirHint

AirHint found the following cheapest return flights from London (LHR) to Cologne (CGN) in September 2025 (see full year).

Return flights

17 Sep - 25 Sep British Airways direct
23 Sep - 29 Sep British Airways direct
29 Sep - 03 Oct British Airways direct
11 Sep - 15 Sep British Airways direct
13 Sep - 15 Sep British Airways direct
19 Sep - 22 Sep British Airways direct
30 Sep - 03 Oct British Airways direct
08 Sep - 01 Oct British Airways direct
07 Sep - 12 Sep British Airways direct
07 Sep - 10 Sep British Airways direct
16 Sep - 18 Sep British Airways direct
03 Sep - 11 Sep British Airways direct
16 Sep - 19 Sep British Airways direct
28 Sep - 02 Oct British Airways direct
29 Sep - 02 Oct British Airways direct
25 Sep - 02 Oct British Airways direct
30 Sep - 02 Oct British Airways direct

Also check the deals for one-way flights from London to Cologne 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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