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Did you mean flights from Cheongju & Daejeon to Sihanoukville?
Cambodia
Sihanoukville Airport (Kompong Som)
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South Korea
Cheong Ju International Airport
At present, there are no direct flights from Sihanoukville to Cheongju & Daejeon.
However, there are several flights from KOS to CJJ with a stopover.
Select a stopover airport from the list below to see which airlines operate flights from KOS to CJJ, and to see what flight schedules are available.
Known for its continental climate, Cheongju & Daejeon features hot, humid summers with temperatures above 30°C (86°F) and cold, snowy winters that often drop below 0°C (32°F). This striking seasonal contrast offers travelers a variety of activities, from summer hiking to winter sports, ensuring year-round appeal.
The best time to visit Cheongju & Daejeon is from March to November, covering spring, summer, and fall. While summer can be hot, it also sees slightly more rainfall than other seasons.

Currently, there is only one airline that covers the full route (with 1 stopover) from Sihanoukville KOS to Cheongju & Daejeon CJJ, which is Ruili Airlines.
All other flights from Sihanoukville to Cheongju & Daejeon are operated by a combination of multiple carriers, which are listed below:
Unfortunately, there are no alliances that cover the full route (with 1 stopover) from Sihanoukville KOS to Cheongju & Daejeon CJJ at this moment.
You can fly the full journey from KOS to CJJ in either Economy or Business Class. Premium Economy and First Class are not available on this route, at least not on the full route with just 1 stopover.
Currently, there is only one aircraft type that covers the full route (with 1 stopover) from Sihanoukville to Cheongju & Daejeon, which is the Boeing 737-800 (winglets).
All other flights from Sihanoukville to Cheongju & Daejeon are operated by a combination of multiple aircraft types.
The distance between Sihanoukville and Cheongju & Daejeon is 2,343 miles (3,771 kilometers).
However, because there are no direct flights between KOS and CJJ, the full journey covers a distance of 2,658 miles (4,278 kilometers).
Flights between Sihanoukville and Cheongju & Daejeon take 7 hours and 50 minutes.
Please note that these times refer to the actual flight times, excluding the stopover time in between connecting flights, as this depends on your stopover airport as well as your date(s) of travel.
There is 1 airport in Cheongju & Daejeon: Cheong Ju International Airport (CJJ).
Flights between Sihanoukville and Cheongju & Daejeon take 7 hours and 50 minutes.
Note that this excludes the layover time in between connecting flights.
Because there are no direct flights between KOS and CJJ, the full journey covers a total distance of 2,658 miles (4,278 kilometers).
Ruili Airlines is the only airline flying the full route from Sihanoukville to Cheongju & Daejeon.
operate several connecting flights, but only partly.
There are no alliances flying from Sihanoukville to Cheongju & Daejeon at this moment.
You can fly the full route from Sihanoukville to Cheongju & Daejeon (with 1 stopover) in Economy and Business Class.
Aircraft types that fly the full route from Sihanoukville to Cheongju & Daejeon (with 1 stopover):
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