AirHint found the following cheapest return flights from Chicago (MDW) to Kuala Lumpur (KUL) in December 2025 (see full year).

Return flights

23 Dec - 24 Jan	Frontier Airlines
22 Dec - 22 Jan	Frontier Airlines
22 Dec - 19 Jan	Frontier Airlines
19 Dec - 25 Jan	Porter Airlines (Canada) Ltd
12 Dec - 10 Jan	Frontier Airlines
20 Dec - 24 Jan	Frontier Airlines
24 Dec - 21 Jan	Delta
24 Dec - 25 Jan	Delta
24 Dec - 24 Jan	Delta
15 Dec - 19 Dec	Delta
30 Dec - 21 Jan	Korean Air
06 Dec - 21 Dec	Delta

Also check the deals for one-way flights from Chicago to Kuala Lumpur 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.

Book a cheap hotel in Kuala Lumpur

Cheap car rent in Kuala Lumpur

Cheapest return flights from Chicago to Kuala Lumpur in December from $1440

Return flights