Distance From N-304 Helipad to Ontario International Airport

The distance from N-304 Helipad () to Ontario International Airport (ONT) is 6131 miles or 9867 kilometers or 5324 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.

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

A one-way nonstop (direct) flight between Seodo and Ontario takes around 14 hours 5 minutes.

Estimated flight time from N-304 Helipad, Seodo, South Korea to Ontario International Airport, Ontario, United States is 14 hours 5 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		9867 km
Statute Miles		6131 miles
Nautical Miles		5324 nm
Avg. Time of Flight		14 hours 5 minutes

N-304 Helipad to Ontario International Airport Flight Route Map - to ONT Flight Path

Location of N-304 Helipad & Ontario International Airport is given below.
Click the map to view Seodo to Ontario nonstop flight path and travel direction.

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

Nonstop flight route between Seodo, South Korea and Ontario, United States.

Time Difference Between the Airports • - ONT

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

Location	Local Time
Seodo (South Korea)	2026-01-30, 00:23:51 KST
Ontario (United States)	2026-01-29, 07:23:51 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

N-304 Helipad ( / RKA6) Seodo, South Korea

Destination

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