Cheapest return flights from London to Basel in September from $119

Best time to book flights for London (LHR) to Basel (BSL) flights at AirHint

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

Return flights

12 Sep - 17 Sep British Airways direct
10 Sep - 17 Sep British Airways direct
24 Sep - 01 Oct British Airways direct
30 Sep - 07 Oct British Airways direct
22 Sep - 26 Sep British Airways direct
05 Sep - 10 Sep British Airways direct
23 Sep - 30 Sep British Airways direct
09 Sep - 18 Sep British Airways direct
04 Sep - 09 Sep British Airways direct
17 Sep - 22 Sep British Airways direct
04 Sep - 08 Sep British Airways direct
05 Sep - 09 Sep British Airways direct
28 Sep - 02 Oct British Airways direct
28 Sep - 05 Oct British Airways direct
29 Sep - 06 Oct British Airways direct
30 Sep - 03 Oct British Airways direct
30 Sep - 04 Oct British Airways direct
27 Sep - 04 Oct British Airways direct
26 Sep - 03 Oct British Airways direct

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

Skyscanner

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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