Ontario CA to Portland (ONT → PDX). We are tracking 6 fares on this route.
Cheapest tracked fare $66 · typical price $175 · you save about $109 (62%)
Cheapest fares we're tracking
Airline
Departs
Stops
Price
—
2026-10-27
Direct
$66
—
2026-11-14
1 stop
$72
Southwest Airlines
2026-10-20
Direct
$86
Southwest Airlines
2026-10-13
Direct
$92
Southwest Airlines
2026-10-21
1 stop
$102
—
2026-10-14
1 stop
$120
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 Portland get?
The cheapest fare we have tracked on this route is $66, compared with a typical $175 for a trip of this distance.
Is it cheaper to fly to Portland 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 Portland 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.