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

Return flights

06 Dec - 13 Dec	Icelandair
12 Dec - 14 Dec	Icelandair
30 Dec - 14 Jan	Air Canada
30 Dec - 14 Jan	Finnair	direct
09 Dec - 16 Dec	United
06 Dec - 13 Dec	Finnair	direct
12 Dec - 14 Dec	Finnair	direct
29 Dec - 05 Jan	United
19 Dec - 26 Dec	Icelandair
23 Dec - 03 Jan	Icelandair
21 Dec - 02 Jan	Icelandair
23 Dec - 03 Jan	Finnair	direct
19 Dec - 26 Dec	British Airways	direct
29 Dec - 05 Jan	British Airways	direct
09 Dec - 16 Dec	British Airways	direct
21 Dec - 02 Jan	British Airways	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 445€

Return flights