Flights from Portland to Ontario

3 deals on this route

Ontario California aerial with San Gabriel Mountains
Save 31%
$226
$328
Portland skyline with Mount Hood
PDXONT
Portland to Ontario
Southwest Airlines
Nonstop·round trip
Jun 12 – Jun 15
Ontario California aerial with San Gabriel Mountains
$294
$328
Portland skyline with Mount Hood
PDXONT
Portland to Ontario
Alaska Airlines
Nonstop·round trip
Jun 11 – Jun 15
Ontario California aerial with San Gabriel Mountains
$216
Portland skyline with Mount Hood
PDXONT
Portland to Ontario
Frontier Airlines
Nonstop·round trip
Jun 11 – Jun 15