Flights from Ontario/LA, CA

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Traveling From Ontario/LA, CA

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Best Flight Deals from Ontario/LA, CA with Frontier

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Best Flight Deals from Ontario/LA, CA with Frontier
From
To
Ontario/LA, CA (ONT)Las Vegas, NV (LAS)One-way
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Discount Den Basic Fare		Departing Mar 25, 2026

From

$25

Last seen: 12 hours ago

Ontario/LA, CA (ONT)Denver, CO (DEN)One-way
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Discount Den Basic Fare		Departing May 12, 2026

From

$23

Last seen: 17 hours ago

Ontario/LA, CA (ONT)Dallas, TX (DFW)One-way
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Discount Den Basic Fare		Departing Apr 23, 2026

From

$33

Last seen: 16 hours ago

Ontario/LA, CA (ONT)Houston, TX (IAH)One-way
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Discount Den Basic Fare		Departing Apr 18, 2026

From

$37

Last seen: 11 hours ago

Ontario/LA, CA (ONT)San Francisco, CA (SFO)One-way
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Discount Den Basic Fare		Departing May 7, 2026

From

$33

Last seen: 14 hours ago

Ontario/LA, CA (ONT)Salt Lake City, UT (SLC)One-way
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Discount Den Basic Fare		Departing Mar 25, 2026

From

$33

Last seen: 8 hours ago

Ontario/LA, CA (ONT)Seattle, WA (SEA)One-way
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Discount Den Basic Fare		Departing Apr 30, 2026

From

$33

Last seen: 16 hours ago

Ontario/LA, CA (ONT)Sacramento, CA (SMF)One-way
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Discount Den Basic Fare		Departing Mar 18, 2026

From

$72

Last seen: 14 hours ago

Ontario/LA, CA (ONT)Portland, OR (PDX)One-way
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Discount Den Basic Fare		Departing Apr 16, 2026

From

$33

Last seen: 5 hours ago

*Prices found by others in the previous 48 hours for one-way flights. Prices shown may also require membership in our travel club, Discount Den®.

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