AirHint found the following cheapest return flights from Raleigh-durham (RDU) to London (LHR) in December 2025 (see full year).

Return flights

02 Dec - 16 Dec	Air Canada
02 Dec - 16 Dec	Iberia	direct
09 Dec - 16 Dec	United
04 Dec - 11 Dec	United
04 Dec - 11 Dec	British Airways	direct
05 Dec - 19 Dec	British Airways	direct
12 Dec - 19 Dec	British Airways
14 Dec - 06 Jan	jetBlue
23 Dec - 08 Jan	Icelandair
17 Dec - 05 Jan	jetBlue
12 Dec - 19 Dec	Iberia	direct
16 Dec - 02 Jan	jetBlue
14 Dec - 21 Dec	United
16 Dec - 04 Jan	jetBlue
14 Dec - 21 Dec	British Airways	direct
16 Dec - 02 Jan	Finnair	direct
14 Dec - 06 Jan	Finnair	direct
24 Dec - 03 Jan	Frontier Airlines
16 Dec - 04 Jan	Finnair	direct
17 Dec - 05 Jan	Finnair	direct

Also check the deals for one-way flights from Raleigh-durham 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 Raleigh-durham to London in December from 536€

Return flights