AirHint found the following cheapest return flights from Washington (IAD) to Karachi (KHI) in December 2025 (see full year).

Return flights

05 Dec - 12 Dec	Turkish Airlines
05 Dec - 29 Jan	Turkish Airlines
31 Dec - 16 Jan	Turkish Airlines
06 Dec - 20 Jan	Etihad Airways
10 Dec - 24 Dec	Etihad Airways
11 Dec - 29 Dec	Etihad Airways
05 Dec - 28 Dec	Turkish Airlines
14 Dec - 19 Dec	Turkish Airlines
25 Dec - 28 Dec	Turkish Airlines
05 Dec - 05 Jan	Turkish Airlines
26 Dec - 10 Jan	Etihad Airways
22 Dec - 14 Jan	Frontier Airlines
14 Dec - 06 Jan	Austrian Airlines
15 Dec - 05 Jan	TAP
15 Dec - 31 Dec	TAP
24 Dec - 31 Dec	Emirates
21 Dec - 03 Jan	Turkish Airlines
19 Dec - 30 Dec	Icelandair
18 Dec - 02 Jan	Turkish Airlines

Also check the deals for one-way flights from Washington to Karachi 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 Karachi in December from 759€

Return flights