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

Return flights

17 Dec - 21 Jan	Kuwait Airways
01 Dec - 16 Dec	Kuwait Airways
06 Dec - 16 Dec	Kuwait Airways
09 Dec - 06 Jan	LOT
25 Dec - 07 Jan	LOT
12 Dec - 03 Jan	LOT
04 Dec - 10 Dec	LOT
19 Dec - 11 Jan	LOT
25 Dec - 31 Jan	Lufthansa
18 Dec - 01 Jan	LOT
19 Dec - 03 Jan	LOT
06 Dec - 04 Jan	Kuwait Airways
18 Dec - 04 Jan	Kuwait Airways
04 Dec - 06 Dec	Kuwait Airways
12 Dec - 15 Dec	Kuwait Airways
05 Dec - 31 Dec	LOT
05 Dec - 09 Dec	LOT
23 Dec - 30 Dec	Air India
08 Dec - 08 Dec	Air India
04 Dec - 05 Dec	Kuwait Airways

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.

Book a cheap hotel in London

Cheap car rent in London

Cheapest return flights from Delhi to London in December from 418€

Return flights