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

ASAlaska Airlines, Inc.

Round Trip•Economy

STS

Charles M. Schulz Sonoma County Airport

Santa Rosa, United States

ONT

Ontario International Airport

Ontario, United States

$415 USD

-72%$117 USD

Verified Oct 30, 2025 at 9:31 AM

December 2025

Today

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1$462 2$332 3$312 4$322 5$302 6$302 7$312 8$302 9$302 10$302 11$322 12$302 13$347 14$322 15$312 16$312 17$312 18$352 19$384 20$368 21$312 22$362 23$392 24$332 25$362 26$437 27$587 28$402 29$362 30$352 31$312 1 2 3 4

Extremely Rare Availability

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

Sunday, December 28th, 2025

6 round-trip options

Returning

Fri, Jan 2, 2026•5 Day Trip

$462 USD

Google Flights

Returning

Sat, Jan 3, 2026•6 Day Trip

$487 USD

Google Flights

Returning

Sun, Jan 4, 2026•7 Day Trip

$462 USD

Google Flights

Returning

Mon, Jan 5, 2026•8 Day Trip

$412 USD

Google Flights

Returning

Tue, Jan 6, 2026•9 Day Trip

$402 USD

Google Flights

Returning

Wed, Jan 7, 2026•10 Day Trip

$487 USD

Google Flights