Distance From Arch Heliport to Ontario International Airport

The distance from Arch Heliport () to Ontario International Airport (ONT) is 1551 miles or 2495 kilometers or 1347 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 St Louis ( United States ) to Ontario ( United States )?

A one-way nonstop (direct) flight between St Louis and Ontario takes around 3 hours 33 minutes.

Estimated flight time from Arch Heliport, St Louis, United States to Ontario International Airport, Ontario, United States is 3 hours 33 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		2495 km
Statute Miles		1551 miles
Nautical Miles		1347 nm
Avg. Time of Flight		3 hours 33 minutes

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

Location of Arch Heliport & Ontario International Airport is given below.
Click the map to view St Louis to Ontario nonstop flight path and travel direction.

Click to see flight route on Google Map between St Louis, United States and Ontario, United States. .

Nonstop flight route between St Louis, United States and Ontario, United States.

Time Difference Between the Airports • - ONT

Time difference between St Louis (United States) and Ontario (United States) is 3 Hours.
Ontario time is 3 Hours behind St Louis.

Location	Local Time
St Louis (United States)	2026-03-21, 23:24:15 EDT
Ontario (United States)	2026-03-21, 20:24:15 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

Arch Heliport ( / MU05) St Louis, United States

Destination

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