$155 Find Cheap Flights from Chicago to Santa Rosa - Compare and Save

In the last 5 days, the lowest price for a flight from Chicago O'Hare Intl Airport to Santa Rosa was $155 for a one-way ticket and $333 for a round-trip.

Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

We unfortunately don’t have that data for this specific route.

oneworld is the only airline alliance operating flights between Chicago and Santa Rosa.

The two airlines most popular with KAYAK users for flights from Chicago to Santa Rosa are Alaska Airlines and American Airlines. With an average price for the route of $478 and an overall rating of 7.9, Alaska Airlines is the most popular choice. American Airlines is also a great choice for the route, with an average price of $563 and an overall rating of 7.1.

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Chicago to Santa Rosa.

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Santa Rosa from Chicago is likely to change within 7 days, so travelers know whether to wait or book now.

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Santa Rosa with an airline and back to Chicago with another airline. Booking your flights between Chicago and STS can sometimes prove cheaper using this method.

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Santa Rosa from Chicago up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.