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Find the best flight to Ontario airport (ONT)

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Great deals to Ontario Intl Airport

We’ve searched 100s of deals recently found by travelers.*
Denver, CO (DEN) Ontario, CA (ONT)
Thu, 12/12 - Sun, 12/15
Frontier Airlines - Roundtrip, Economy
$77
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Austin, TX (AUS) Ontario, CA (ONT)
Sun, 2/2 - Sun, 2/9
Frontier Airlines - Roundtrip, Economy
$87
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Sacramento, CA (SAC) Ontario, CA (ONT)
Tue, 12/10 - Wed, 12/11
United Airlines - Roundtrip, Economy
$96
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Oakland, CA (OAK) Ontario, CA (ONT)
Wed, 12/11 - Thu, 12/12
United Airlines - Roundtrip, Economy
$106
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Portland, OR (PDX) Ontario, CA (ONT)
Tue, 12/17 - Wed, 12/18
Alaska Airlines - Roundtrip, Economy
$136
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Seattle, WA (SEA) Ontario, CA (ONT)
Tue, 12/10 - Wed, 12/11
Alaska Airlines - Roundtrip, Economy
$136
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Atlanta, GA (ATL) Ontario, CA (ONT)
Thu, 1/9 - Mon, 1/20
Multiple Airlines - Roundtrip, Economy
$154
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Phoenix, AZ (PHX) Ontario, CA (ONT)
Tue, 2/18 - Wed, 2/26
American Airlines - Roundtrip, Economy
$160
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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.
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Flight stats for ONT - did you know?

  • Ontario Intl Airport is the closest major airport to Ontario.
  • Ontario Intl Airport (Ontario, CA)
    • Right now, 18 airlines operate out of Ontario Intl Airport.
    • Ontario Intl Airport offers nonstop flights to 19 cities.
    • Every week, at least 619 domestic flights and 21 international flights depart from Ontario Intl Airport.
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