Ontario CA to Miami (ONT → MIA). We are tracking 5 fares on this route.
Cheapest tracked fare $124 · typical price $282 · you save about $158 (56%)
Cheapest fares we're tracking
Airline
Departs
Stops
Price
Frontier Airlines
2026-11-08
1 stop
$124
Frontier Airlines
2026-10-06
1 stop
$147
—
2026-12-17
1 stop
$154
Frontier Airlines
2026-10-01
1 stop
$155
Frontier Airlines
2026-11-13
1 stop
$208
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 Miami get?
The cheapest fare we have tracked on this route is $124, compared with a typical $282 for a trip of this distance.
Is it cheaper to fly to Miami 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 Miami 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.