Cheapest return flights from London to Frankfurt in September from $245

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

Return flights

26 Sep - 30 Sep Lufthansa direct
24 Sep - 30 Sep Lufthansa direct
15 Sep - 23 Sep Lufthansa direct
23 Sep - 30 Sep Lufthansa direct
16 Sep - 19 Sep Lufthansa direct
16 Sep - 23 Sep Lufthansa direct
30 Sep - 07 Oct Lufthansa direct
08 Sep - 30 Sep Lufthansa direct
15 Sep - 15 Oct Lufthansa direct
26 Sep - 26 Sep British Airways direct
25 Sep - 26 Sep British Airways direct
08 Sep - 19 Sep Lufthansa direct
10 Sep - 15 Oct British Airways direct
24 Sep - 01 Oct ITA Airways
26 Sep - 01 Oct British Airways direct
20 Sep - 05 Oct SWISS
27 Sep - 01 Oct KLM
24 Sep - 01 Oct British Airways direct
30 Sep - 05 Oct KLM
17 Sep - 01 Oct British Airways direct

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