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

Return flights

10 Dec - 14 Jan	Turkish Airlines
04 Dec - 13 Dec	Turkish Airlines
08 Dec - 14 Jan	Turkish Airlines
09 Dec - 14 Jan	Turkish Airlines
07 Dec - 14 Jan	Turkish Airlines
04 Dec - 19 Jan	Turkish Airlines
06 Dec - 14 Jan	Turkish Airlines
11 Dec - 13 Jan	Turkish Airlines
10 Dec - 12 Dec	Air France
25 Dec - 12 Jan	Turkish Airlines
11 Dec - 12 Jan	Turkish Airlines
10 Dec - 10 Jan	Spirit Airlines
11 Dec - 12 Dec	Spirit Airlines
20 Dec - 30 Dec	Turkish Airlines

Also check the deals for one-way flights from Houston 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 Houston to Karachi in December from 801€

Return flights