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

Return flights

20 Dec - 10 Jan	IndiGo
17 Dec - 10 Jan	IndiGo
23 Dec - 29 Jan	IndiGo
17 Dec - 06 Jan	IndiGo
18 Dec - 06 Jan	IndiGo
20 Dec - 06 Jan	IndiGo
21 Dec - 06 Jan	IndiGo
19 Dec - 06 Jan	IndiGo
12 Dec - 31 Dec	IndiGo
16 Dec - 05 Jan	IndiGo
17 Dec - 05 Jan	IndiGo
16 Dec - 23 Dec	IndiGo
15 Dec - 17 Dec	IndiGo
10 Dec - 17 Dec	IndiGo
11 Dec - 18 Dec	IndiGo
16 Dec - 21 Dec	Lufthansa
15 Dec - 22 Dec	Lufthansa
14 Dec - 18 Dec	IndiGo
09 Dec - 19 Dec	Ethiopian Airlines
19 Dec - 29 Dec	Qatar Airways

Also check the deals for one-way flights from Delhi to Brussels 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 Brussels in December from 397€

Return flights