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

Return flights

10 Dec - 14 Jan	British Airways
04 Dec - 11 Dec	United
11 Dec - 25 Dec	British Airways
08 Dec - 22 Dec	British Airways
14 Dec - 21 Dec	British Airways
26 Dec - 17 Jan	British Airways
13 Dec - 21 Dec	British Airways
25 Dec - 08 Jan	Delta
29 Dec - 05 Jan	British Airways
24 Dec - 31 Dec	British Airways
27 Dec - 06 Jan	Delta
19 Dec - 26 Dec	British Airways
20 Dec - 03 Jan	Virgin Atlantic
20 Dec - 25 Dec	jetBlue
20 Dec - 25 Dec	British Airways	direct
20 Dec - 03 Jan	British Airways	direct

Also check the deals for one-way flights from New Orleans 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 New Orleans to London in December from 602€

Return flights