Ontario CA to Las Vegas (ONT → LAS). We are tracking 12 fares on this route.
Cheapest tracked fare $58 · typical price $75 · you save about $17 (22%)
Cheapest fares we're tracking
Airline
Departs
Stops
Price
Frontier Airlines
2026-10-26
Direct
$58
Frontier Airlines
2026-09-21
Direct
$59
Frontier Airlines
2026-09-14
Direct
$60
Frontier Airlines
2026-09-20
Direct
$60
Frontier Airlines
2026-10-12
Direct
$61
Frontier Airlines
2026-09-16
Direct
$62
Frontier Airlines
2026-09-18
Direct
$62
Frontier Airlines
2026-09-22
Direct
$62
Frontier Airlines
2026-11-04
Direct
$62
Frontier Airlines
2026-10-14
Direct
$63
Frontier Airlines
2026-10-18
Direct
$63
Frontier Airlines
2026-10-23
Direct
$63
Could you save more?
The airport you were going to fly from is often not the cheapest one. Compare every airport in a region against each other, or check whether a multi-day stopover beats the direct fare.
How cheap can flights from Ontario CA to Las Vegas get?
The cheapest fare we have tracked on this route is $58, compared with a typical $75 for a trip of this distance.
Is it cheaper to fly to Las Vegas from a different airport?
Often, yes. Fares out of secondary airports are frequently cheaper than the obvious hub, but they are the ones most likely to be missing from a normal search. Our reverse search compares every airport in a region against each other so the cheaper departure point is not hidden.
Could a stopover make Ontario CA to Las Vegas cheaper?
Sometimes. On thin long-haul routes a two-leg trip with a multi-day stopover can beat the direct fare, and occasionally a direct fare is not sold at all. Our detour search prices those routings against the direct flight.