Distance From Ontario International Airport to Harry Reid International Airport, ONT - LAS Distance

The distance from Ontario International Airport (ONT) to Harry Reid International Airport (LAS) is 197 miles or 317 kilometers or 172 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 Ontario ( United States ) to Las Vegas ( United States )?

A one-way nonstop (direct) flight between Ontario and Las Vegas takes around 0 hours 27 minutes.

Estimated flight time from Ontario International Airport, Ontario, United States to Harry Reid International Airport, Las Vegas, United States is 0 hours 27 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 - LAS

Kilometers		317 km
Statute Miles		197 miles
Nautical Miles		172 nm
Avg. Time of Flight		0 hours 27 minutes

Ontario International Airport to Harry Reid International Airport Flight Route Map - ONT to LAS Flight Path

Location of Ontario International Airport & Harry Reid International Airport is given below.
Click the map to view Ontario to Las Vegas nonstop flight path and travel direction.

Click to see flight route on Google Map between Ontario, United States and Las Vegas, United States. .

Nonstop flight route between Ontario, United States and Las Vegas, United States.

Time Difference Between the Airports • ONT - LAS

Time difference between Ontario (United States) and Las Vegas (United States) is 0 Hours.

Location	Local Time
Ontario (United States)	2026-05-05, 17:12:54 PDT
Las Vegas (United States)	2026-05-05, 17:12:54 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

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

Destination

Harry Reid International Airport (LAS / KLAS) Las Vegas, United States