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 Feb 2, 2026

From

$19

Last seen: 14 hours ago

Ontario/LA, CA (ONT)Denver, CO (DEN)One-way
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Discount Den Basic Fare		Departing Mar 10, 2026

From

$19

Last seen: 9 hours ago

Ontario/LA, CA (ONT)Dallas, TX (DFW)One-way
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Discount Den Basic Fare		Departing Feb 21, 2026

From

$25

Last seen: 12 hours ago

Ontario/LA, CA (ONT)San Francisco, CA (SFO)One-way
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Discount Den Basic Fare		Departing Feb 17, 2026

From

$33

Last seen: 7 hours ago

Ontario/LA, CA (ONT)Seattle, WA (SEA)One-way
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Discount Den Basic Fare		Departing Feb 6, 2026

From

$33

Last seen: 8 hours ago

Ontario/LA, CA (ONT)Houston, TX (IAH)One-way
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Discount Den Basic Fare		Departing Mar 4, 2026

From

$33

Last seen: 1 hour ago

Ontario/LA, CA (ONT)Portland, OR (PDX)One-way
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Discount Den Basic Fare		Departing Feb 1, 2026

From

$33

Last seen: 10 hours ago

Ontario/LA, CA (ONT)Sacramento, CA (SMF)One-way
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Discount Den Basic Fare		Departing Feb 1, 2026

From

$38

Last seen: 1 hour ago

Ontario/LA, CA (ONT)Salt Lake City, UT (SLC)One-way
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Discount Den Basic Fare		Departing Mar 10, 2026

From

$33

Last seen: 17 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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