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

Return flights

09 Dec - 16 Dec	British Airways
02 Dec - 06 Dec	Spirit Airlines
04 Dec - 08 Dec	jetBlue
03 Dec - 10 Dec	Spirit Airlines
30 Dec - 10 Jan	British Airways
13 Dec - 24 Jan	jetBlue
12 Dec - 01 Jan	Spirit Airlines
22 Dec - 18 Jan	Air Canada
05 Dec - 27 Dec	Spirit Airlines
27 Dec - 17 Jan	British Airways
02 Dec - 03 Dec	Spirit Airlines
02 Dec - 27 Dec	Spirit Airlines
16 Dec - 30 Dec	Lufthansa
01 Dec - 27 Dec	Spirit Airlines
22 Dec - 28 Dec	Air Canada
27 Dec - 01 Jan	Spirit Airlines
10 Dec - 03 Jan	Spirit Airlines
19 Dec - 10 Jan	British Airways
19 Dec - 04 Jan	Frontier Airlines
18 Dec - 03 Jan	Air Canada

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 $651

Return flights