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

Return flights

03 Dec - 10 Dec	British Airways
08 Dec - 15 Dec	British Airways
18 Dec - 25 Dec	British Airways
23 Dec - 30 Dec	British Airways
13 Dec - 20 Dec	United
10 Dec - 06 Jan	British Airways
10 Dec - 05 Jan	British Airways
10 Dec - 13 Dec	British Airways
10 Dec - 04 Jan	United

Also check the deals for one-way flights from Jacksonville to London in December.

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 December from 449€

Return flights