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

Return flights

09 Dec - 22 Dec	Pegasus Airlines
04 Dec - 16 Dec	Ryanair
09 Dec - 27 Jan	Ryanair
06 Dec - 17 Dec	Ryanair
02 Dec - 18 Dec	Pegasus Airlines
14 Dec - 19 Dec	Ryanair
01 Dec - 13 Jan	Ryanair
10 Dec - 19 Jan	Pegasus Airlines
02 Dec - 12 Jan	Pegasus Airlines
05 Dec - 07 Dec	Pegasus Airlines
11 Dec - 18 Jan	Pegasus Airlines
03 Dec - 19 Dec	Ryanair
01 Dec - 02 Dec	Ryanair
10 Dec - 12 Jan	Pegasus Airlines
07 Dec - 11 Dec	Ryanair
29 Dec - 13 Jan	Pegasus Airlines
12 Dec - 12 Jan	Ryanair
05 Dec - 25 Jan	Ryanair
27 Dec - 08 Jan	Ryanair
06 Dec - 08 Dec	Ryanair

Also check the deals for one-way flights from London to Delhi 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 London to Delhi in December from $445

Return flights