Menu

Cheap flights from Chicago to Sonoma County (CHI - STS)

Know your dates, get live prices in seconds:

From
To
Depart
Return
Any month
Compare vs. Cheapflights |
From
To
Depart
Depart
Time
Anytime
From
To
Depart
Depart
Time
Anytime
From
To
Depart
Depart
Time
Anytime
From
To
Depart
Depart
Time
Anytime
From
To
Depart
Depart
Time
Anytime
From
To
Depart
Depart
Time
Anytime

We work with more than 300 partners to bring you better travel deals

How to find the cheapest flight from
Chicago (CHI) to Sonoma County (STS)

What is the cheapest day to fly round-trip from Chicago to Sonoma County?

Users have found that leaving on a Tuesday can be a cost-effective option. It’s possible to save up to 60% on your flight compared to booking on days when demand is much higher.

How far in advance should I book a flight from Chicago to Sonoma County?

To save on the cost of your flight from Chicago to Sonoma County, book at least 44 days before your planned departure. Booking around this time can save you about 20% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $117 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $137.

What is the cheapest month to fly from Chicago to Sonoma County?

Flights from Chicago to Sonoma County lean towards being more expensive in April. Prices are generally better when you fly from Chicago to Sonoma County in February, with the cheapest ticket starting at $61.

Cheap flights from Chicago to Sonoma County in July, August 2020

The best prices found for CHI to STS flights for July, August
29 Jul - 29 Jul
$256pp
ORD
Chicago O'Hare Intl
Multiple Airlines
 
1 STOP
STS
Santa Rosa Sonoma County
STS
Santa Rosa Sonoma County
Alaska Airlines
 
1 STOP
ORD
Chicago O'Hare Intl
11 Jul - 13 Jul
$270pp
ORD
Chicago O'Hare Intl
Multiple Airlines
 
1 STOP
STS
Santa Rosa Sonoma County
STS
Santa Rosa Sonoma County
American Airlines
 
1 STOP
ORD
Chicago O'Hare Intl
25 Jul - 2 Aug
$276pp
ORD
Chicago O'Hare Intl
Multiple Airlines
 
1 STOP
STS
Santa Rosa Sonoma County
STS
Santa Rosa Sonoma County
Alaska Airlines
 
1 STOP
ORD
Chicago O'Hare Intl

Chicago to Sonoma County 2020 flight deals

Cheap flights to Sonoma County from Chicago found for this year
29 Jul - 29 Jul
$256pp
ORD
Chicago O'Hare Intl
Multiple Airlines
 
1 STOP
STS
Santa Rosa Sonoma County
STS
Santa Rosa Sonoma County
Alaska Airlines
 
1 STOP
ORD
Chicago O'Hare Intl
11 Jul - 13 Jul
$270pp
ORD
Chicago O'Hare Intl
Multiple Airlines
 
1 STOP
STS
Santa Rosa Sonoma County
STS
Santa Rosa Sonoma County
American Airlines
 
1 STOP
ORD
Chicago O'Hare Intl
7 Oct - 11 Oct
$272pp
ORD
Chicago O'Hare Intl
Major Airline
 
1 STOP
STS
Santa Rosa Sonoma County
STS
Santa Rosa Sonoma County
Major Airline
 
1 STOP
ORD
Chicago O'Hare Intl

Last minute flights from Chicago to Sonoma County

Late deals on round-trip flights to Sonoma County from Chicago, departing today and this week
24 Jun - 1 Jul
$581pp
ORD
Chicago O'Hare Intl
Multiple Airlines
 
1 STOP
STS
Santa Rosa Sonoma County
STS
Santa Rosa Sonoma County
United Airlines
 
1 STOP
ORD
Chicago O'Hare Intl

One-way flights to Sonoma County from Chicago

The cheapest one-way flights from Chicago to Sonoma County
3:01 am - 7:02 am
Multiple Airlines
1 Stop
30h 01m
ORD - STS
Multiple Airlines
$472
United
3:00 am - 12:43 pm
Multiple Airlines
2 Stops
11h 43m
ORD - STS
Multiple Airlines
$451
United
12:45 pm - 7:02 am
Multiple Airlines
2 Stops
20h 17m
ORD - STS
Multiple Airlines
$468
United

Related info for your journey

Useful info, stats and facts about Chicago to Sonoma County flights.

Flight FAQs

From Chicago to Sonoma County

Are flight prices decreasing from Chicago to Santa Rosa due to COVID-19 (coronavirus)?

At this time, Cheapflights has noticed price decreases for many domestic flights due to COVID-19. Travel is not necessarily recommended at this time, and flights may be prone to cancellation: please check with local authorities in both Chicago and Santa Rosa for travel alerts, and be sure to review the airline's cancellation policy and travel advisories before booking. For more information, please view our post on what to know about COVID-19 (coronavirus) and travel.

Can I find flights from Chicago to Sonoma County for under $300 on Cheapflights?

Yes, there are multiple flights from Chicago to Sonoma County for under $300. The cheapest flight booked recently is on Multiple Airlines for just $256, but on average you can expect to pay $483.

Are there nonstop flights from Chicago to Sonoma County for under $300 on Cheapflights?

There are no nonstop flights from Chicago to Sonoma County, but Cheapflights can provide you with all the information you need to find the fastest route with the fewest stops.

Are there last-minute flights available from Chicago to Sonoma County for under $600?

There are currently 1+ open flights from Chicago to Sonoma County within the next 7 days for less than $600.

What days are nonstop flights available from Chicago to Santa Rosa?

Nonstop flights are available for this route on the following days: Sunday, Tuesday, Wednesday, Thursday, Saturday.

How popular is this flight route?

This flight path from Chicago to Santa Rosa Sonoma County was viewed by 307 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

What is the cheapest airline for this route?

United Air Lines Inc. offers the cheapest flights from Chicago to Santa Rosa. Per day you can find on average 291 flights for this route and airline.

Is Chicago weather warmer or cooler than Santa Rosa?

You can imagine temperatures to be in the 90 °F range in July. The weather in Santa Rosa is generally hotter than Chicago's. As flight availability is subject to become more limited as peak season approaches it is ideal to book in a timely manner.

Alternative routes for Chicago to Sonoma County

Destination information for Sonoma County

Things to know before you go. Useful info for your trip from Chicago to Sonoma County
Average temperature for July in Sonoma County
89.6 °F
Avg rainfall for July in Sonoma County
0.1 ″

Airports servicing Chicago

Chicago Midway (MDW)
Rockford (RFD)

Airports servicing Santa Rosa