Distance From Althorpe Lighthouse Airstrip to Ontario International Airport

The distance from Althorpe Lighthouse Airstrip () to Ontario International Airport (ONT) is 8315 miles or 13381 kilometers or 7221 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 Althorpe Islands ( Australia ) to Ontario ( United States )?

A one-way nonstop (direct) flight between Althorpe Islands and Ontario takes around 19 hours 6 minutes.

Estimated flight time from Althorpe Lighthouse Airstrip, Althorpe Islands, Australia to Ontario International Airport, Ontario, United States is 19 hours 6 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		13381 km
Statute Miles		8315 miles
Nautical Miles		7221 nm
Avg. Time of Flight		19 hours 6 minutes

Althorpe Lighthouse Airstrip to Ontario International Airport Flight Route Map - to ONT Flight Path

Location of Althorpe Lighthouse Airstrip & Ontario International Airport is given below.
Click the map to view Althorpe Islands to Ontario nonstop flight path and travel direction.

Click to see flight route on Google Map between Althorpe Islands, Australia and Ontario, United States. .

Nonstop flight route between Althorpe Islands, Australia and Ontario, United States.

Time Difference Between the Airports • - ONT

Time difference between Althorpe Islands (Australia) and Ontario (United States) is 16 Hours 30 Minutes.
Ontario time is 16 Hours 30 Minutes behind Althorpe Islands.

Location	Local Time
Althorpe Islands (Australia)	2026-06-20, 10:57:58 ACST
Ontario (United States)	2026-06-19, 18:27:58 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

Althorpe Lighthouse Airstrip ( / ) Althorpe Islands, Australia

Destination

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