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

Return flights

28 Dec - 23 Jan	IndiGo
30 Dec - 05 Jan	AZAL
30 Dec - 14 Jan	AZAL
31 Dec - 02 Jan	IndiGo
30 Dec - 30 Jan	AZAL
29 Dec - 23 Jan	Air India
28 Dec - 14 Jan	AZAL
26 Dec - 27 Jan	Air India
28 Dec - 05 Jan	AZAL
29 Dec - 14 Jan	AZAL
27 Dec - 27 Dec	SWISS
26 Dec - 31 Dec	SWISS
28 Dec - 29 Dec	Turkish Airlines
28 Dec - 31 Dec	Air India
28 Dec - 30 Dec	Turkish Airlines
27 Dec - 29 Dec	SWISS
26 Dec - 28 Dec	Air India
26 Dec - 30 Dec	Air India
29 Dec - 29 Dec	Air India
27 Dec - 31 Dec	Qatar 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.

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Cheapest return flights from Delhi to London in December from $609

Return flights