Cheap flights from Houston Intercontinental to Ontario CA
Houston Intercontinental to Ontario CA (IAH → ONT). We are tracking 5 fares on this route.
Cheapest tracked fare $72 · typical price $198 · you save about $126 (64%)
Cheapest fares we're tracking
Airline
Departs
Stops
Price
Frontier Airlines
2026-09-05
Direct
$72
Frontier Airlines
2026-10-30
Direct
$79
Frontier Airlines
2026-10-31
1 stop
$89
Frontier Airlines
2026-10-20
1 stop
$91
Frontier Airlines
2026-10-27
1 stop
$91
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 Houston Intercontinental to Ontario CA get?
The cheapest fare we have tracked on this route is $72, compared with a typical $198 for a trip of this distance.
Is it cheaper to fly to Ontario CA 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 Houston Intercontinental to Ontario CA 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.