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

Return flights

15 Dec - 12 Jan	IndiGo
23 Dec - 12 Jan	IndiGo
17 Dec - 10 Jan	IndiGo
20 Dec - 19 Jan	IndiGo
23 Dec - 31 Jan	IndiGo
16 Dec - 30 Jan	IndiGo
23 Dec - 29 Jan	IndiGo
10 Dec - 30 Jan	IndiGo
23 Dec - 06 Jan	IndiGo
18 Dec - 06 Jan	IndiGo
23 Dec - 30 Dec	IndiGo
17 Dec - 30 Dec	IndiGo
16 Dec - 30 Dec	IndiGo
24 Dec - 31 Dec	IndiGo
24 Dec - 28 Dec	IndiGo
08 Dec - 30 Dec	IndiGo
19 Dec - 30 Dec	AZAL
25 Dec - 30 Dec	Qatar Airways
19 Dec - 26 Dec	IndiGo
24 Dec - 29 Dec	IndiGo

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 339€

Return flights