AirHint found the following cheapest return flights from San Antonio (SAT) to London (LHR) in October 2025 (see full year).

Return flights

08 Oct - 15 Oct	British Airways
22 Oct - 29 Oct	British Airways
01 Oct - 08 Oct	British Airways
14 Oct - 21 Oct	British Airways
07 Oct - 14 Oct	British Airways
29 Oct - 05 Nov	British Airways
13 Oct - 20 Oct	British Airways
02 Oct - 09 Oct	British Airways
06 Oct - 13 Oct	British Airways
16 Oct - 23 Oct	British Airways
19 Oct - 26 Oct	British Airways
31 Oct - 07 Nov	British Airways
15 Oct - 08 Nov	British Airways
26 Oct - 02 Nov	British Airways

Also check the deals for one-way flights from San Antonio to London in October.

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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Cheapest return flights from San Antonio to London in October from 452€

Return flights