KMG to KOS, Kunming Changshui International Airport to Sihanouk International Airport Cheap Flights

Based on HopeGoo data, Ruili Airlines offers one-way fares as low as US$166 on Cheapest nonstop routes (e.g. KMG to KOS on Tue, Feb 10), while Ruili Airlines offers Cheapest nonstop round-trips from US$373 departing on Thu, Mar 19 and returning on Tue, Mar 24.

At the moment, you can catch a nonstop flight from Kunming to Sihanoukville with the following airlines, including: Ruili Airlines Selected airlines are based on historical data collected from flight bookings users made on HopeGoo within the last 90 days.

It takes about 2 hours 50 minutes to fly from Kunming to Sihanoukville.

By analyzing data from all airlines on the HopeGoo flight calendar, it looks like the best time to book a flight from Kunming to Sihanoukville is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.

Based on HopeGoo data in the past 4 weeks, there is 3 flight per week flying from Kunming to Sihanoukville. You can check the weekly schedule for popular airlines on this route below: Ruili Airlines: -/M/-/W/-/F/- -- DR5029 (18:44)

To find best deals on flights from Kunming to Sihanoukville, you can use various tools on HopeGoo: · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Tue, Feb 10, with one-way flights priced at just US$166. · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is Ruili Airlines. · Set up price alerts to easily monitor ticket prices without having to check every day. · Check HopeGoo flight deals and promo codes frequently. · Avoid peak season unless you book very early. It seems the peak season for Sihanoukville travel is around November. · Get exclusive promo codes for HopeGoo app users.

The cheapest months to fly from Kunming to Sihanoukville is September, when demand for travel is lower.

After crunching the numbers on our February flight calendar, it's currently cheapest to fly from Kunming to Sihanoukville on February 26, 2026 with Batik Air Malaysia, with prices starting at US$182.

You can land at any one of the following hubs in Sihanoukville, with Kunming Changshui International Airport to Sihanouk International Airport (KMG-KOS) is by far the most common option on this route: Sihanouk International Airport (KOS).

The time difference between Sihanoukville and Kunming is 1h.

Tickets can only be changed or canceled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your HopeGoo, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.