Distance From San Guillermo Airport to Ontario International Airport

The distance from San Guillermo Airport () to Ontario International Airport (ONT) is 5669 miles or 9123 kilometers or 4923 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 Retiro ( Chile ) to Ontario ( United States )?

A one-way nonstop (direct) flight between Retiro and Ontario takes around 13 hours 1 minutes.

Estimated flight time from San Guillermo Airport, Retiro, Chile to Ontario International Airport, Ontario, United States is 13 hours 1 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		9123 km
Statute Miles		5669 miles
Nautical Miles		4923 nm
Avg. Time of Flight		13 hours 1 minutes

San Guillermo Airport to Ontario International Airport Flight Route Map - to ONT Flight Path

Location of San Guillermo Airport & Ontario International Airport is given below.
Click the map to view Retiro to Ontario nonstop flight path and travel direction.

Click to see flight route on Google Map between Retiro, Chile and Ontario, United States. .

Nonstop flight route between Retiro, Chile and Ontario, United States.

Time Difference Between the Airports • - ONT

Time difference between Retiro (Chile) and Ontario (United States) is 4 Hours.
Ontario time is 4 Hours behind Retiro.

Location	Local Time
Retiro (Chile)	2026-09-15, 02:10:59 -03
Ontario (United States)	2026-09-14, 22:10:59 PDT

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

San Guillermo Airport ( / SCGI) Retiro, Chile

Destination

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