Trip ideas from Ontario 83 places from Ontario with a recent one-way price. Prices we can stand behind come first, then the cheapest.
Return (164) One-way (83) Fly from somewhere else Narrow it down 66 hidden by travel month Deals worth a look Denver
Denver 15 Dec · Nonstop
Leaves from Ontario International Airport (ONT) → DEN
From $40 one way From $40 one way
1 traveler · Economy
found yesterday
70.8% below the middle price here: the cheapest one-way fare on each of 8 departure dates is usually $108 to $169.
This price is for these exact dates; other dates may cost more.
San Francisco
San Francisco 5 Dec · Nonstop
Leaves from Ontario International Airport (ONT) → SFO
From $19 one way From $19 one way
1 traveler · Economy
found 2 days ago
69.4% below the middle price here: the cheapest one-way fare on each of 16 departure dates is usually $45 to $189.
This price is for these exact dates; other dates may cost more.
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Show all 17 places with recent prices from Ontario The cheapest recent price for each place — per traveler in Economy.
Prices are what travelers' searches on Aviasales found in the last 7 days, in US dollars: the price the seller showed on Aviasales; bags may cost extra. Fares change, so check today's price before you book. How our prices work