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

Return flights

15 Oct - 22 Oct	Air Canada
07 Oct - 16 Oct	Air Canada
22 Oct - 29 Oct	British Airways
28 Oct - 04 Nov	British Airways
19 Oct - 08 Nov	Air Canada
10 Oct - 22 Oct	British Airways
01 Oct - 12 Oct	British Airways
24 Oct - 31 Oct	British Airways
26 Oct - 02 Nov	British Airways
18 Oct - 08 Nov	British Airways
09 Oct - 01 Nov	British Airways
03 Oct - 13 Oct	Air Canada
16 Oct - 20 Oct	Air Canada
17 Oct - 08 Nov	British Airways
30 Oct - 06 Nov	British Airways
14 Oct - 21 Oct	British Airways
03 Oct - 25 Oct	United

Also check the deals for one-way flights from Jacksonville 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 Jacksonville to London in October from $520

Return flights