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

Return flights

02 Dec - 09 Dec	United
12 Dec - 19 Dec	United
18 Dec - 23 Dec	Air Canada
20 Dec - 27 Jan	KLM
22 Dec - 29 Dec	United
18 Dec - 27 Dec	American Airlines
20 Dec - 27 Jan	British Airways	direct
18 Dec - 27 Dec	British Airways	direct
18 Dec - 23 Dec	British Airways	direct
02 Dec - 09 Dec	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 $704

Return flights