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

$391 USD

-70%$117 USD

Verified Oct 30, 2025 at 9:29 AM

December 2025

Today

Mon

Tue

Wed

Thu

Fri

Sat

Sun

1$397 2$332 3$302 4$312 5$312 6$302 7$312 8$322 9$312 10$302 11$312 12$312 13$312 14$322 15$322 16$312 17$332 18$352 19$412 20$422 21$431 22$422 23$347 24$322 25$322 26$546 27$507 28$447 29$392 30$387 31$302 1 2 3 4

Extremely Rare Availability

4% of dates checked are available within 10% of the lowest price

Tuesday, December 30th, 2025

9 round-trip options

Returning

Sun, Jan 4, 2026•5 Day Trip

$427 USD

Google Flights

Returning

Mon, Jan 5, 2026•6 Day Trip

$387 USD

Google Flights

Returning

Tue, Jan 6, 2026•7 Day Trip

$387 USD

Google Flights

Returning

Wed, Jan 7, 2026•8 Day Trip

$387 USD

Google Flights

Returning

Thu, Jan 8, 2026•9 Day Trip

$397 USD

Google Flights

Returning

Fri, Jan 9, 2026•10 Day Trip

$417 USD

Google Flights

Returning

Sat, Jan 10, 2026•11 Day Trip

$417 USD

Google Flights

Returning

Sun, Jan 11, 2026•12 Day Trip

$487 USD

Google Flights

Returning

Mon, Jan 12, 2026•13 Day Trip

$457 USD

Google Flights