Ontario (ONT) to Santa Rosa (STS) flight deal from $117 USD in economy class

ASAlaska Airlines, Inc.

Round Trip•Economy

ONT

Ontario International Airport

Ontario, United States

STS

Charles M. Schulz Sonoma County Airport

Santa Rosa, United States

$392 USD

-70%$117 USD

Verified Nov 2, 2025 at 4:04 PM

December 2025

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1$397 2$332 3$302 4$322 5$312 6$302 7$312 8$322 9$302 10$302 11$312 12$312 13$324 14$322 15$322 16$332 17$363 18$382 19$442 20$422 21$431 22$422 23$342 24$322 25$332 26$516 27$507 28$447 29$392 30$387 31$302 1 2 3 4

Extremely Rare Availability

3% of dates checked are available within 10% of the lowest price

Friday, December 26th, 2025

7 round-trip options

Returning

Wed, Dec 31, 2025•5 Day Trip

$526 USD

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Thu, Jan 1, 2026•6 Day Trip

$556 USD

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Fri, Jan 2, 2026•7 Day Trip

$601 USD

Google Flights

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Sat, Jan 3, 2026•8 Day Trip

$546 USD

Google Flights

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Sun, Jan 4, 2026•9 Day Trip

$556 USD

Google Flights

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Mon, Jan 5, 2026•10 Day Trip

$516 USD

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Tue, Jan 6, 2026•11 Day Trip

$516 USD

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