AirHint found the following cheapest return flights from Atlanta (ATL) to London (LHR) in December 2026 (see full year).

Return flights

02 Dec - 09 Dec	Scandinavian Airlines
02 Dec - 09 Dec	Iberia	direct
04 Dec - 14 Dec	Scandinavian Airlines
04 Dec - 28 Dec	Air Canada
27 Dec - 10 Jan	Lufthansa
15 Dec - 25 Dec	Air Canada
04 Dec - 14 Dec	Air France	direct
20 Dec - 10 Jan	Scandinavian Airlines
13 Dec - 02 Jan	Scandinavian Airlines
24 Dec - 31 Dec	Air Canada
25 Dec - 31 Dec	Air Canada
20 Dec - 31 Dec	Air Canada
19 Dec - 31 Dec	Air Canada
13 Dec - 02 Jan	British Airways	direct

Also check the deals for one-way flights from Atlanta 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 Atlanta to London in December from 525€

Return flights