Cheap Flights from Las Vegas (LAS) to Ontario Intl. Airport (ONT)

The lowest price advertised for a round-trip journey from LAS to ONT is . But you better get moving. This price is based on fares available within the last 7 days on Expedia for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.

This differs between air carriers, as each one has its own set of terms and conditions. Head to the Customer Service Portal, where there are easy instructions on how to cancel online.

Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for LAS to ONT flights, you'll see a "no change fees" filter for you to select.

With a flight distance of 320 kilometres, it's only a short hop from LAS to Los Angeles - Ontario Intl. Airport (ONT). It might be a quick flight, but it's still worth bringing along something to keep you entertained on board.

Southwest Airlines (WN) is one of the top choices for many travellers flying between LAS and Los Angeles - Ontario Intl. Airport (ONT). Select from the 143 flights it operates on this route each month. If you're eager for more options, check out the fares from Frontier Airlines (F9). This carrier offers 56 flights a month between these airports.

Last-minute bookings from LAS to Ontario Airport can be hit-or-miss. You may be able to find a bargain, but then again, you could miss out entirely! If you'd rather play it safe and start planning early, Expedia compares flight deals up to a year in advance. Just keep in mind that not all airlines publish their prices that far in advance. Our top tip? Check back often as prices are updated regularly.