Title: CA $355 Cheap Flights from Chicago (ORD) to Santa Rosa (STS) - Expedia.ca ![Annual Sonoma Hot Air Balloon Classic (Windsor, CA)](https://images.trvl-media.com/place/9542/b4ccdb92-b048-45af-b643-5a9cc297deeb.jpg?impolicy=fcrop&w=1200&h=500&q=medium) Photo by Rick Alvarez ![](https://images.trvl-media.com/place/9542/b4ccdb92-b048-45af-b643-5a9cc297deeb.jpg?impolicy=fcrop&w=1200&h=500&q=medium) # CA $355 Cheap Flights from Chicago (ORD) to Santa Rosa (STS) [View CA $355 flight on Thu, Oct 2, 2025](https://expedia.ca/Flights-Search?trip=oneway&leg1=from:ORD,to:STS,departure:02/10/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:354.90&airProductToken=AQqSAQotCMGmARIDNjgzGK4cIJIBKIyj-QIwoaX5AjhYQABYAWoCU1ZyCE9INE9HSkJOCi8IwaYBEgQxMzAwGJIBIIu4ASiAp_kCMKeo-QI4WEABWAFqAlNWcghPSDRPR0pCTgowCMGmARIEMzQ3MRiLuAEg8pQBKN2q-QIww6v5AjhYQAFYAWoCU1ZyCE5INE9BU0JOEgoIARABGAEqAkFTGAEiBAgBEAEoAigDKAQwAQ) - [Roundtrip](?flightType=roundtrip) - [One-way](?flightType=oneway) - [Multi-city](?flightType=multicity) ### Travellers Adults ChildrenAges 2 to 17 InfantsYounger than 2 EconomyPremium economyBusiness classFirst class Leaving from Going to Departing Returning Add a place to stay Add a car Direct flights only ## Popular airlines from Chicago O'Hare International Airport (ORD) to Santa Rosa, CA (STS-Sonoma County) - ![Alaska Airlines](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AS.svg) Alaska Airlines [](https://www.expedia.ca/Flights-Search?leg1=from:ord,to:sts,departure:02/10/2025TANYT&leg2=from:sts,to:ord,departure:09/10/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AS"}}]) - ![American Airlines](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AA.svg) American Airlines [](https://www.expedia.ca/Flights-Search?leg1=from:ord,to:sts,departure:02/10/2025TANYT&leg2=from:sts,to:ord,departure:09/10/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AA"}}]) - ![Hawaiian Airlines](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_HA.svg) Hawaiian Airlines [](https://www.expedia.ca/Flights-Search?leg1=from:ord,to:sts,departure:02/10/2025TANYT&leg2=from:sts,to:ord,departure:09/10/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"HA"}}]) - ## Plan, book, fly with confidence - ### Be in the know Get alerts if flight prices drop or rise\* - ### Book smarter Save up to 30% on select hotels after you book a flight\* - ### Earn twice Earn your airline miles on top of our rewards [Sign in](https://www.expedia.ca/login) ## Cheap flights from Chicago (ORD) to Santa Rosa (STS) Prices were available within the past 7 days and start at CA $355 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. All deals One way Roundtrip ## Find the cheapest month to fly from Chicago (ORD) to Santa Rosa (STS) ### October is typically the cheapest month to fly From CA $382 - CA $944 per traveller. ## Frequently asked questions ### How much is a flight from O'Hare Airport to Sonoma County Airport? > Pack your bags, because round-trip journeys from O'Hare Intl. Airport (ORD) to STS start from . That's based on fares listed within the last 7 days on Expedia for flights departing within the next year. Prices can move quickly, so book now to get the best deal. Prices and availability are subject to change. Additional terms apply. ### Do I need to pay a cancellation fee if I cancel my flight from O'Hare Intl. Airport (ORD) to STS? > We understand that your situation can change unexpectedly, so we've made it as easy as possible for you to cancel your trip online. Just head to the [Customer Service Portal](https://www.expedia.ca/helpcenter) and follow the instructions. ### How do I find cheap flights from O'Hare Airport to Sonoma County Airport (STS) that have flexible change policies? > Flights from O'Hare Intl. Airport (ORD) to Sonoma County Airport (STS) offering flexible change policies are available with many airlines. Simply use our "No change fees" filter during your search. You'll only need to pay the cost difference between the two flights, without any additional fees to worry about. ### How many hours is the flight from O'Hare Intl. Airport (ORD) to Sonoma County Airport (STS)? > Consider bringing your own in-flight entertainment, as it takes roughly 6 hours and 36 minutes to touch down in Sonoma County Airport (STS) from O'Hare Intl. Airport (ORD). A set of noise-cancelling headphones will be useful too. ### How far is the flight from ORD to Sonoma County Airport (STS)? > The flight distance from Chicago to Windsor is 3,000 kilometres. Bring along a drink, a snack and an interesting novel to read. Keep yourself entertained and time will zip by. ### Which airlines fly direct from ORD to STS? > At present, no airlines offer flights directly from ORD to Sonoma County Airport (STS). You'll have to book a flight with at least one stop. To get the best price and connections, lock in your fare ahead of time. ### Are O'Hare Intl. Airport (ORD) to Sonoma County Airport flight tickets cheaper when they're purchased at the last minute? > It is possible to pick up an amazing last-minute deal from ORD to Sonoma County Airport, but it's also possible to miss out altogether! As many airlines advertise prices up to 12 months in advance, it's worthwhile keeping an eye on fares early and being ready to book when you see a good bargain. Expedia compares carrier prices and updates flight deals all the time, so you can be certain you're always seeing the latest offers. ## Travel information | Origin airport | O'Hare Intl. | | --- | --- | | Destination airport | Sonoma County | | Distance | 2949 km | ## Book with confidence ### Chicago to Windsor Flights **The easy way to book your flights from Chicago to Santa Rosa**  With Expedia, it’s simple to find and book flights to Santa Rosa from Chicago whether you’re traveling for business or pleasure. Enter your travel dates, hit search, and choose your flight from 20 airlines that cover this route. There are nonstop flights to Sonoma County, too.   Choose your preferred carrier and cabin class with the advanced search tool and select your ideal departure time. Then, if you want, you can see just nonstop or refundable flights. And if you’re traveling last minute, just enter the date to check out flights from Chicago to Santa Rosa today, tomorrow, or this week.   **Save dollars with cheap flights from O'Hare Intl., ORD to Sonoma County, STS**  Sort your search results by price to find great deals on your flight from Chicago to Santa Rosa—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to Santa Rosa from Chicago currently is just rising to .   Here are more money-saving tips:  - Fly in when flight prices are normally at their lowest  - Book about a month to 6 weeks before you travel for the best prices to Santa Rosa   - Avoid peak season and weekends when flights can cost more - Early morning and late-night flights are sometimes cheaper, so try varying your travel times  - One surefire way to save money on your flight is to book your flight and hotel together with Expedia. Sometimes, the savings are so large that the flight is basically free!  **Reasons to choose Expedia for your flight to Santa Rosa from Chicago**  Whatever your destination, budget, or reason to travel, in just one quick search, you can choose from loads of flights, airlines, and cabin classes. The filters make it quick and easy to find your ideal flights, and if you choose one of the flexible options, you won’t be charged to change your flight. 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