Airport guide · United States
Cheap Flights from Ontario (ONT)
Ontario travelers: this page watches fares departing ONT so you don't have to. Note that Ontario is served by 2 airports — it's always worth comparing them. Search live prices below or browse the latest fares spotted from here.
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Live fares departing Ontario (ONT) — updated regularly.
Live fares from ONT are updating — use the search above for real-time prices.
Popular routes from Ontario (ONT)
Nonstop routes airlines operate from Ontario — each page tracks live fares, price trends and the cheapest month to fly.
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Ontario (ONT) flight FAQs
What is the airport code for Ontario?
Ontario's airport code is ONT — that's the three-letter code to type into any flight search to pull up fares for this airport.
How do I find cheap flights from Ontario?
Book 3–6 weeks ahead for domestic US routes (2–3 months for international), fly midweek (Tue–Thu), and compare live fares below. Setting a free Airfare Deal alert is the easiest way to catch price drops from ONT.
Which airlines fly from ONT?
Major US carriers serve Ontario (ONT). Compare live fares below to see which airline is cheapest for your dates.
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