Distance From Jeju International Airport Heliport to Ontario International Airport

The distance from Jeju International Airport Heliport () to Ontario International Airport (ONT) is 6189 miles or 9960 kilometers or 5375 nautical miles.

The distance shown below is direct flight distance between airports. Straight-line distance does not account for the surface between the two points. It is the distance a bird or airplane would travel between the two points when flying above the surface. The straight line distance is the direct route between two points, regardless of whether or not there are roads that connect them.

---

How long does it take to travel from Yongdami-dong ( South Korea ) to Ontario ( United States )?

A one-way nonstop (direct) flight between Yongdami-dong and Ontario takes around 14 hours 13 minutes.

Estimated flight time from Jeju International Airport Heliport, Yongdami-dong, South Korea to Ontario International Airport, Ontario, United States is 14 hours 13 minutes under avarage conditions. Your actual flying time may vary depending on wind direction/speed or weather conditions. This calculation does not include the departure and landing times of the aircraft. In addition, it does not cover the person identity check, ticket check-in and baggage collection times at the airport.

Travel Distance Between the Airports • - ONT

Kilometers		9960 km
Statute Miles		6189 miles
Nautical Miles		5375 nm
Avg. Time of Flight		14 hours 13 minutes

Jeju International Airport Heliport to Ontario International Airport Flight Route Map - to ONT Flight Path

Location of Jeju International Airport Heliport & Ontario International Airport is given below.
Click the map to view Yongdami-dong to Ontario nonstop flight path and travel direction.

Click to see flight route on Google Map between Yongdami-dong, South Korea and Ontario, United States. .

Nonstop flight route between Yongdami-dong, South Korea and Ontario, United States.

Time Difference Between the Airports • - ONT

Time difference between Yongdami-dong (South Korea) and Ontario (United States) is 17 Hours.
Ontario time is 17 Hours behind Yongdami-dong.

Location	Local Time
Yongdami-dong (South Korea)	2025-12-14, 18:38:52 KST
Ontario (United States)	2025-12-14, 01:38:52 PST

Why should you arrive 3 hours before international flight? Flyers who are traveling to an international destination should arrive at the airport earlier than domestic flyers. This is because international flights can have additional check-in requirements, like passport verification, that need to be completed before you receive your boarding pass.

Origin

Jeju International Airport Heliport ( / ) Yongdami-dong, South Korea

Destination

Ontario International Airport (ONT / KONT) Ontario, United States