Direct (nonstop) flights from Ontario to Las Vegas
2 airlines fly nonstop from Ontario International Airport (ONT) to Harry Reid International Airport (LAS). It's 197 miles (317 km), about 1h 5m in the air. Operated by Frontier Airlines, Southwest Airlines.
Frontier Airlines
Southwest Airlines
Route data last updated: May 30, 2026
Airlines with non-stop flights
F9
Frontier Airlines
WN
Southwest Airlines
Alternative Routes
Other ways to fly from Ontario to Las Vegas with one stop · direct emits 36 kg CO₂ per passenger
Looking for the return flight?
LAS → ONT: Flights from Las Vegas to OntarioOther direct flights from Ontario
Direct flights from Las Vegas (LAS)
Frequently Asked Questions
How long is the direct flight from Ontario to Las Vegas?
A nonstop flight from Ontario (ONT) to Las Vegas (LAS) takes approximately 1 hours and 5 minutes. The distance is 197 miles (317 km).
Which airlines fly nonstop from Ontario to Las Vegas?
2 airlines: Frontier Airlines, Southwest Airlines.
Is there a nonstop flight from Ontario to Las Vegas?
Yes. 2 airlines: Frontier Airlines, Southwest Airlines.
How far is Ontario from Las Vegas?
The flight distance from Ontario to Las Vegas is 197 miles (317 km), measured as the great-circle (shortest air) distance. That's roughly the same distance as New York to Washington DC.
What type of aircraft flies from Ontario to Las Vegas?
At 1h 5m, this route typically uses narrow-body aircraft — Boeing 737 or Airbus A320. Varies by airline.
What is the carbon footprint of a flight from Ontario to Las Vegas?
Roughly 36 kg CO2 per passenger one-way. That's about the same as driving 180 km.
Is the return flight from Las Vegas to Ontario also nonstop?
Yes — nonstop flights run both ways. Flight time may differ slightly due to wind patterns.
When is the cheapest time to fly from Ontario to Las Vegas?
Midweek flights (Tue/Wed) outside holiday peaks are usually cheapest. 3-6 weeks ahead is a good window for this route. Use "Check Prices" above to compare.
How early should I arrive at Ontario International Airport for this flight?
1.5-2 hours for domestic. Add more time during holidays or busy travel weekends.