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

Return flights

02 Dec - 09 Dec	Air India
05 Dec - 20 Dec	Virgin Atlantic
02 Dec - 20 Jan	Air India
01 Dec - 20 Jan	Air India
01 Dec - 01 Jan	Air Canada
22 Dec - 01 Jan	British Airways
09 Dec - 06 Jan	British Airways
02 Dec - 04 Jan	British Airways
23 Dec - 05 Jan	Finnair
08 Dec - 05 Jan	British Airways
01 Dec - 04 Jan	British Airways
06 Dec - 04 Jan	British Airways
13 Dec - 31 Dec	Cathay Pacific
18 Dec - 31 Dec	Air India
19 Dec - 31 Dec	Finnair
18 Dec - 20 Dec	Qatar Airways

Also check the deals for one-way flights from Washington 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 Washington to Delhi in December from $969

Return flights