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

Wednesday, December 31st, 2025

7 round-trip options

Returning

Mon, Jan 5, 2026•5 Day Trip

$302 USD

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Returning

Tue, Jan 6, 2026•6 Day Trip

$302 USD

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Returning

Wed, Jan 7, 2026•7 Day Trip

$302 USD

Google Flights

Returning

Thu, Jan 8, 2026•8 Day Trip

$312 USD

Google Flights

Returning

Fri, Jan 9, 2026•9 Day Trip

$302 USD

Google Flights

Returning

Sat, Jan 10, 2026•10 Day Trip

$312 USD

Google Flights

Returning

Sun, Jan 11, 2026•11 Day Trip

$312 USD

Google Flights