Nonstop route
Ontario to Phoenix nonstop
Yes — Southwest and American fly ONT to PHX nonstop year-round — about 7× daily.
ONTOntario
✈
PHXPhoenix
7× daily51.6 flights a week
Year-round51.6/wk Jun vs 58.5/wk Jan
$100–$275typical one-way · median $175
325miles nonstop
Affiliate disclosure
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Fares are what people actually paid: half of the 2,775 tickets in the US DOT fare survey for this route sold between $100 and $275 one way, median $175. That survey runs a couple of quarters behind, so treat it as the shape of the route's pricing rather than today's quote.
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