Ontario (ONT) to Las Vegas (LAS) flights
2 airlines fly nonstop from Ontario (ONT) to Las Vegas (LAS): Frontier Airlines and Southwest Airlines. The two airports are 197 miles (317 km) apart. There are also 7 ways to fly it with one stop, through Phoenix, San Jose and Oakland and more.
Airlines flying nonstop from ONT to LAS
- Frontier AirlinesNot in an allianceWho books it
- Southwest AirlinesNot in an allianceWho books it
ONT to LAS with one stop
7 connections, most direct first. 2-stop routings and flight times are in Routes with Pro.
- Via Phoenix (PHX)American Airlines and Southwest Airlines the whole way
- Via San Jose (SJC)Southwest Airlines the whole way
+1 - Via Oakland (OAK)Southwest Airlines and Frontier Airlines the whole way
- Via San Francisco (SFO)United Airlines and Frontier Airlines the whole way
+1 - Via Sacramento (SMF)Southwest Airlines and Frontier Airlines the whole way
- Via Santa Rosa (STS)Alaska Airlines the whole way
- Via Salt Lake City (SLC)Delta Air Lines the whole way
ONT to LAS: common questions
Which airlines fly nonstop from ONT to LAS?
Frontier Airlines and Southwest Airlines fly nonstop from Ontario (ONT) to Las Vegas (LAS).
How far is Ontario from Las Vegas by plane?
Ontario (ONT) and Las Vegas (LAS) are 197 miles (317 km) apart along the great circle, the shortest path a flight can take. Connections add distance on top.
How many miles does ONT to LAS cost?
It depends on the program: each prices the route from its own chart or dynamically. The Award Flight Pricer compares 30+ programs for ONT to LAS with taxes and fees.
Where can I connect between Ontario and Las Vegas?
The most direct connections are through Phoenix (PHX), San Jose (SJC), Oakland (OAK), San Francisco (SFO) and Sacramento (SMF). On 7 of them the same airline flies both flights, for example American Airlines through Phoenix.
More routes
Routes are scheduled nonstop flights. The route data is refreshed monthly; this list was last checked November 11, 2026. Seasonal routes and new launches can be missing or end early, so confirm with the airline before you book. Distances are great-circle, the shortest path between the two airports.