C$267 Cheap Flights from Chicago O'Hare International (ORD) to Santa Rosa (STS)

Compare Chicago O'Hare International to Santa Rosa flight deals

Find the cheapest month or even day of the year to fly to Santa Rosa

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Flight deals from Chicago O'Hare International to Santa Rosa

Looking for a cheap last-minute deal or the best return flight from Chicago O'Hare International Airport to Santa Rosa Airport? If you want to travel next month, return fares start from C$669. Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Chicago O'Hare International to Santa Rosa

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Chicago O'Hare International to Santa Rosa flights are currently cheapest in July.

Chicago O'Hare International to Santa Rosa: Alternative routes

Compare routes from Chicago O'Hare International to Santa Rosa below. You may find an airport to fly into that's cheaper, faster, or easier than Santa Rosa.

Chicago to Santa Rosa: Flight information

The things to know before you go.
Cheapest flight foundC$267
Cheapest month to flyJuly

Finding cheap flights from Chicago O'Hare International to Santa Rosa: Frequently asked questions

The best price we found for a return flight from Chicago O'Hare International to Santa Rosa is C$608. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from Chicago O'Hare International to Santa Rosa. But we found flights with one or more stops from C$608.
As of May 2026, there are no flights flying from Chicago O'Hare International to Santa Rosa.
The cheapest month to fly from Chicago O'Hare International to Santa Rosa is usually September.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Chicago O'Hare International Airport to Santa Rosa Airport on Friday, September 18, 2026.
No airlines currently offer direct flights between Chicago O'Hare International Airport and Santa Rosa Airport. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Santa Rosa but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Santa Rosa is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, Alaska Airlines offers the cheapest flight tickets to Santa Rosa.

Flying from O'Hare International Airport (ORD) to Sonoma County Airport (STS): what you need to know

  • If you're flying during a public holiday or other peak period, allow for even more time. A good rule is two hours before domestic flights and up to four hours before international departures. Lines at check-in and security will be longer.

  • Choose a stopover if you want to break up your flight from O'Hare International Airport to Sonoma County Airport. To look at your options, simply deselect 'Direct flights only.' Dallas/Fort Worth International Airport is a popular stopover on the ORD to STS route.

How to find the cheapest flights from O'Hare International Airport (ORD) to Sonoma County Airport (STS)

  • C$267 is the lowest price for a one-way ticket from O'Hare International Airport to Sonoma County Airport. A return flight starts from C$608. These fares may change based on availability.

  • It's a good idea to book in advance if you want to get cheap flight tickets from ORD to STS. That's because airlines change prices based on demand, which tends to increase closer to the date of departure.

  • Getting cheap flight tickets from O'Hare International Airport to Sonoma County Airport is more likely if you can be flexible with your dates. Use the 'Whole month' search function to see the lowest prices across every month and score a great deal.

  • Log into your online account or use the app to set up a Price Alert. We'll let you know straight away if there's a better deal on this route. It's simple to do, and it'll save you time checking for cheap flight tickets from ORD to STS every day.

  • Tailor your trip with filters. Choose your departure and arrival times, airlines and total journey duration. You can also sort your results by 'Cheapest,' 'Best' or 'Fastest' flights from O'Hare International Airport to Sonoma County Airport.

Handy information about O'Hare International Airport (ORD)

Arriving at Sonoma County Airport (STS)

Getting from Sonoma County Airport (STS) to central Santa Rosa

  • From Sonoma County Airport, Santa Rosa is approximately 13 kilometres away. It takes around 14 minutes to get to the center driving.

  • It'll take around 36 minutes to get there using public transport.

When to fly to Sonoma County Airport (STS)

  • It's time to pick your dates for your flight from O'Hare International Airport to Sonoma County Airport. October is the most popular month to visit Santa Rosa. If you like a more low-key vibe, go in May.

  • When reserving your flight from O'Hare International Airport to Sonoma County Airport, think about the type of weather you like. August is the warmest month in Santa Rosa, with the temperature ranging from 11ºC to 29ºC.

  • February has average temperatures of between 2ºC and 19ºC. Search for cheap flight tickets from ORD to STS sometime around then if you like traveling in cooler conditions.

More about Santa Rosa

  • When it comes to looking for somewhere to lay your head, you'll find the top stays in Santa Rosa right here. Explore these options as soon as you've locked in your flight from ORD to STS:

  • There are so many things to explore in this city it can be hard to know where to begin. Safari West, Annadel State Park and Pacific Coast Air Museum are major attractions which should feature on any good Santa Rosa itinerary.

Complete your Santa Rosa trip with hotels and a car rental

  • We've got more party tricks up our sleeve than just comparing flights. Once you've booked your cheap ticket to Sonoma County Airport, check out our car rental offers that'll give you the freedom to see the sights at your own pace. Next, take a look at our exclusive rates for hotels to find your ideal Santa Rosa stay.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.