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

Return flights

23 Dec - 20 Jan	Etihad Airways
23 Dec - 21 Jan	Etihad Airways
11 Dec - 14 Jan	Etihad Airways
17 Dec - 11 Jan	Etihad Airways
01 Dec - 31 Jan	Etihad Airways
12 Dec - 11 Jan	Etihad Airways
01 Dec - 24 Jan	Etihad Airways
15 Dec - 26 Jan	Etihad Airways
11 Dec - 04 Jan	LOT
15 Dec - 05 Jan	LOT
09 Dec - 29 Dec	Finnair
25 Dec - 31 Dec	Finnair
18 Dec - 30 Dec	Finnair
17 Dec - 30 Dec	Finnair
10 Dec - 31 Dec	Finnair
08 Dec - 31 Dec	Finnair
18 Dec - 31 Dec	Finnair
08 Dec - 30 Dec	Finnair
05 Dec - 08 Dec	LOT
19 Dec - 30 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 420€

Return flights