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

Return flights

15 Dec - 13 Jan	Frontier Airlines
28 Dec - 23 Jan	Spirit Airlines
22 Dec - 21 Jan	Spirit Airlines
22 Dec - 15 Jan	Spirit Airlines
23 Dec - 29 Dec	jetBlue
14 Dec - 07 Jan	jetBlue
14 Dec - 08 Jan	jetBlue
15 Dec - 08 Jan	jetBlue
16 Dec - 24 Dec	jetBlue
14 Dec - 06 Jan	jetBlue
25 Dec - 30 Dec	Air Canada
16 Dec - 23 Dec	jetBlue
23 Dec - 31 Dec	Spirit Airlines
24 Dec - 30 Dec	Spirit Airlines
26 Dec - 31 Dec	Air Canada
28 Dec - 23 Jan	British Airways	direct
21 Dec - 28 Dec	Spirit Airlines
25 Dec - 30 Dec	Finnair	direct
22 Dec - 30 Dec	Spirit Airlines
22 Dec - 05 Jan	Spirit Airlines

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 $879

Return flights