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

Return flights

10 Dec - 07 Jan	Finnair
10 Dec - 06 Jan	Finnair
16 Dec - 06 Jan	Finnair
01 Dec - 31 Dec	Finnair
17 Dec - 04 Jan	Finnair
03 Dec - 08 Dec	Finnair
01 Dec - 06 Dec	Finnair
01 Dec - 09 Dec	Finnair
01 Dec - 07 Dec	Finnair
03 Dec - 07 Dec	Finnair
02 Dec - 09 Dec	Finnair
16 Dec - 13 Jan	Finnair
16 Dec - 16 Jan	Finnair
16 Dec - 20 Jan	Kuwait Airways
14 Dec - 21 Dec	Kuwait Airways
20 Dec - 11 Jan	Kuwait Airways
15 Dec - 02 Jan	Kuwait Airways
20 Dec - 23 Jan	Kuwait Airways
16 Dec - 27 Dec	Finnair
01 Dec - 25 Dec	Finnair

Also check the deals for one-way flights from Delhi 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 Delhi to London in December from 410€

Return flights