Cheapest return flights from London to Frankfurt in September from 124€

Best time to book flights for London (LHR) to Frankfurt (FRA) flights at AirHint

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

Return flights

30 Sep - 14 Oct British Airways direct
26 Sep - 29 Sep British Airways direct
11 Sep - 17 Sep British Airways direct
18 Sep - 21 Sep British Airways direct
11 Sep - 15 Sep British Airways direct
18 Sep - 22 Sep Lufthansa direct
19 Sep - 21 Sep British Airways direct
12 Sep - 14 Sep British Airways direct
19 Sep - 22 Sep Lufthansa direct
26 Sep - 28 Sep Lufthansa direct
27 Sep - 02 Oct Lufthansa direct
04 Sep - 08 Sep Lufthansa direct
30 Sep - 11 Oct Lufthansa 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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