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

Return flights

19 Dec - 10 Jan	IndiGo
16 Dec - 14 Jan	IndiGo
04 Dec - 30 Dec	IndiGo
22 Dec - 19 Jan	IndiGo
13 Dec - 13 Jan	IndiGo
03 Dec - 05 Dec	Kuwait Airways
20 Dec - 05 Jan	IndiGo
20 Dec - 06 Jan	IndiGo
02 Dec - 11 Jan	IndiGo
10 Dec - 05 Jan	IndiGo
09 Dec - 31 Dec	IndiGo
14 Dec - 09 Jan	IndiGo
03 Dec - 09 Jan	IndiGo
19 Dec - 26 Dec	IndiGo
11 Dec - 27 Dec	IndiGo
12 Dec - 30 Dec	IndiGo
17 Dec - 30 Dec	IndiGo
04 Dec - 14 Dec	IndiGo
06 Dec - 13 Dec	SpiceJet
18 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 $382

Return flights