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Find the best flight to Ontario

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Great deals to Ontario
We’ve searched 100s of deals recently found by travelers.*
Washington DC, DC (WAS) Ontario, CA (ONT)
Thu, 11/8 - Mon, 11/12
JetBlue - 1 Stop, Roundtrip, Economy
$261
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Washington DC, DC (WAS) Ontario, CA (ONT)
Wed, 9/5 - Thu, 9/6
American Airlines - 1 Stop, Roundtrip, Economy
$270
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Washington DC, DC (WAS) Ontario, CA (ONT)
Sat, 11/10 - Thu, 11/22
United Airlines - 1 Stop, Roundtrip, Economy
$275
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Washington DC, DC (WAS) Ontario, CA (ONT)
Thu, 9/13 - Wed, 9/19
United Airlines - 1 Stop, Roundtrip, Economy
$275
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Washington DC, DC (WAS) Ontario, CA (ONT)
Tue, 9/11 - Mon, 9/17
United Airlines - 1 Stop, Roundtrip, Economy
$275
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Washington DC, DC (WAS) Ontario, CA (ONT)
Wed, 9/5 - Tue, 9/11
United Airlines - 1 Stop, Roundtrip, Economy
$275
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Washington DC, DC (WAS) Ontario, CA (ONT)
Wed, 9/12 - Sat, 9/15
American Airlines - 1 Stop, Roundtrip, Economy
$275
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Washington DC, DC (WAS) Ontario, CA (ONT)
Sat, 9/22 - Sat, 9/29
American Airlines - 1 Stop, Roundtrip, Economy
$286
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*Prices are based on round trip travel with returns between 1-21 days after departure. These are the best fares found by travelers who searched TripAdvisor and a select group of our fare search partners in the past 72 hours. Ticket prices and seat availability change rapidly and cannot be guaranteed.
Flight stats for Ontario - did you know?
  • Ontario Intl Airport is the closest major airport to Ontario.
  • Ontario Intl Airport (Ontario, CA)
    • Right now, 15 airlines operate out of Ontario Intl Airport.
    • Ontario Intl Airport offers nonstop flights to 16 cities.
    • Every week, at least 334 domestic flights and 8 international flights depart from Ontario Intl Airport.
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