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Cheap flights from Chicago to San Francisco from $172

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Chicago to San Francisco departing on 7/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Chicago to San Francisco

Cheap round-trip flights

Enter your travel dates to find the best prices.
Alaska Airlines Logo
6:20 am - 6:20 pm
ORD
-
STS
14h 00m
1 stop
Alaska Airlines Logo
2:17 pm - 5:00 am
STS
-
ORD
12h 43m
2 stops
$369Alaska Airlines
Sat, Jul 4 - Thu, Jul 9
Alaska Airlines Logo
6:20 am - 5:16 pm
ORD
-
STS
12h 56m
2 stops
Alaska Airlines Logo
11:04 am - 1:22 pm
STS
-
ORD
24h 18m
1 stop
$373Alaska Airlines
Mon, Aug 10 - Tue, Aug 18
Alaska Airlines Logo
6:20 am - 5:16 pm
ORD
-
STS
12h 56m
2 stops
Alaska Airlines Logo
6:13 am - 11:59 pm
STS
-
ORD
15h 46m
1 stop
$377Alaska Airlines
Tue, Aug 18 - Thu, Aug 20
Alaska Airlines Logo
7:20 am - 12:26 pm
ORD
-
STS
7h 06m
1 stop
Alaska Airlines Logo
1:06 pm - 6:57 pm
STS
-
ORD
27h 51m
2 stops
$380Alaska Airlines
Wed, Jul 15 - Tue, Jul 21
Alaska Airlines Logo
6:20 am - 5:16 pm
ORD
-
STS
12h 56m
2 stops
Alaska Airlines Logo
7:25 am - 11:59 pm
STS
-
ORD
14h 34m
2 stops
$383Alaska Airlines
Mon, Aug 10 - Tue, Aug 18
Alaska Airlines Logo
6:00 am - 11:58 am
ORD
-
STS
7h 58m
1 stop
Alaska Airlines Logo
6:47 pm - 1:22 pm
STS
-
ORD
16h 35m
1 stop
$388Alaska Airlines
Tue, Aug 18 - Thu, Aug 20
Alaska Airlines Logo
7:20 am - 4:55 pm
ORD
-
STS
11h 35m
2 stops
Alaska Airlines Logo
1:06 pm - 5:00 am
STS
-
ORD
13h 54m
2 stops
$392Alaska Airlines
Wed, Jul 15 - Tue, Jul 21
Alaska Airlines Logo
7:20 am - 12:26 pm
ORD
-
STS
7h 06m
1 stop
Alaska Airlines Logo
1:06 pm - 6:57 pm
STS
-
ORD
27h 51m
2 stops
$394Alaska Airlines
Wed, Jul 15 - Tue, Jul 21
American Airlines Logo
7:00 am - 12:03 pm
ORD
-
STS
7h 03m
1 stop
American Airlines Logo
1:00 pm - 12:51 am
STS
-
ORD
9h 51m
1 stop
$399American Airlines
Sat, Jul 18 - Sat, Jul 25
American Airlines Logo
6:04 am - 12:03 pm
ORD
-
STS
7h 59m
1 stop
American Airlines Logo
1:00 pm - 12:51 am
STS
-
ORD
9h 51m
1 stop
$401American Airlines
Wed, Jul 15 - Tue, Jul 21

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American Airlines flights from Chicago to Santa Rosa

Our best American Airlines deals on Chicago to Santa Rosa flight tickets
American Airlines
Jul 18
ORD7:00 amChicago O'Hare Intl
7h 03m
1 stop
STS12:03 pmSanta Rosa Sonoma County
Jul 25
STS1:00 pmSanta Rosa Sonoma County
9h 51m
1 stop
ORD12:51 amChicago O'Hare Intl
$399
American Airlines
Jul 15
ORD6:04 amChicago O'Hare Intl
7h 59m
1 stop
STS12:03 pmSanta Rosa Sonoma County
Jul 21
STS1:00 pmSanta Rosa Sonoma County
9h 51m
1 stop
ORD12:51 amChicago O'Hare Intl
$401
American Airlines
Jul 4
ORD5:00 amChicago O'Hare Intl
6h 52m
1 stop
STS9:52 amSanta Rosa Sonoma County
Jul 9
STS4:12 pmSanta Rosa Sonoma County
6h 39m
1 stop
ORD12:51 amChicago O'Hare Intl
$436

Alaska Airlines flights from Chicago to Santa Rosa

Our best Alaska Airlines deals on Chicago to Santa Rosa flight tickets
Alaska Airlines
Jul 4
ORD6:20 amChicago O'Hare Intl
14h 00m
1 stop
STS6:20 pmSanta Rosa Sonoma County
Jul 9
STS2:17 pmSanta Rosa Sonoma County
12h 43m
2 stops
ORD5:00 amChicago O'Hare Intl
$369
Alaska Airlines
Aug 10
ORD6:20 amChicago O'Hare Intl
12h 56m
2 stops
STS5:16 pmSanta Rosa Sonoma County
Aug 18
STS11:04 amSanta Rosa Sonoma County
24h 18m
1 stop
ORD1:22 pmChicago O'Hare Intl
$373
Alaska Airlines
Oct 27
ORD7:20 amChicago O'Hare Intl
34h 52m
2 stops
STS4:12 pmSanta Rosa Sonoma County
Oct 31
STS7:00 amSanta Rosa Sonoma County
9h 20m
1 stop
ORD6:20 pmChicago O'Hare Intl
$375

momondo Fare Finder

 
Customize your flight search to find flights from Chicago to Santa Rosa that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated June 21, 2026.
Use the filters below to find and compare flights from Chicago to Santa Rosa that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoSanta Rosa

ORD - STS

ORDSTS

Chicago O'Hare Intl

Sat 7/4

6:20 am-6:20 pm

1 stop14h 00m

Santa Rosa Sonoma County

Thu 7/9

2:17 pm-5:00 am

2 stops12h 43m

$369

ChicagoSanta Rosa

ORD - STS

ORDSTS

Chicago O'Hare Intl

Mon 8/10

6:20 am-5:16 pm

2 stops12h 56m

Santa Rosa Sonoma County

Tue 8/18

11:04 am-1:22 pm

1 stop24h 18m

$373

ChicagoSanta Rosa

ORD - STS

ORDSTS

Chicago O'Hare Intl

Tue 8/18

6:20 am-5:16 pm

2 stops12h 56m

Santa Rosa Sonoma County

Thu 8/20

6:13 am-11:59 pm

1 stop15h 46m

$377

ChicagoSanta Rosa

ORD - STS

ORDSTS

Chicago O'Hare Intl

Wed 7/15

7:20 am-12:26 pm

1 stop7h 06m

Santa Rosa Sonoma County

Tue 7/21

1:06 pm-6:57 pm

2 stops27h 51m

$380

ChicagoSanta Rosa

ORD - STS

ORDSTS

Chicago O'Hare Intl

Mon 8/10

6:20 am-5:16 pm

2 stops12h 56m

Santa Rosa Sonoma County

Tue 8/18

7:25 am-11:59 pm

2 stops14h 34m

$383

ChicagoSanta Rosa

ORD - STS

ORDSTS

Chicago O'Hare Intl

Tue 8/18

6:00 am-11:58 am

1 stop7h 58m

Santa Rosa Sonoma County

Thu 8/20

6:47 pm-1:22 pm

1 stop16h 35m

$388

ChicagoSanta Rosa

ORD - STS

ORDSTS

Chicago O'Hare Intl

Wed 7/15

7:20 am-4:55 pm

2 stops11h 35m

Santa Rosa Sonoma County

Tue 7/21

1:06 pm-5:00 am

2 stops13h 54m

$392

ChicagoSanta Rosa

ORD - STS

ORDSTS

Chicago O'Hare Intl

Wed 7/15

7:20 am-12:26 pm

1 stop7h 06m

Santa Rosa Sonoma County

Tue 7/21

1:06 pm-6:57 pm

2 stops27h 51m

$394
Quickest round-trip

ChicagoSanta Rosa

ORD - STS

ORDSTS

Chicago O'Hare Intl

Sat 7/18

7:00 am-12:03 pm

1 stop7h 03m

Santa Rosa Sonoma County

Sat 7/25

1:00 pm-12:51 am

1 stop9h 51m

$399

ChicagoSanta Rosa

ORD - STS

ORDSTS

Chicago O'Hare Intl

Wed 7/15

6:04 am-12:03 pm

1 stop7h 59m

Santa Rosa Sonoma County

Tue 7/21

1:00 pm-12:51 am

1 stop9h 51m

$401

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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2

See travel insights to San Francisco from

How to get the cheapest flight ticket from Chicago to Santa Rosa

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Santa Rosa?

If you are unable to visit Santa Rosa during the month of August, then departing from Chicago during the month December is also very affordable. Most momondo users find prices during this month for around $239.

When to book flights from Chicago to Santa Rosa

Are you open to changing your travel dates? Check out the ideal times to fly from Chicago to Santa Rosa according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Chicago to Santa Rosa (CHI to STS) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Chicago to Santa Rosa

Fastest flight time

7h 58m

Direct flights

None
The fastest flight from Chicago to Santa Rosa takes 7h 58m
There are no direct flights from Chicago to Santa Rosa. There are no popular flight routes from Chicago to Santa Rosa.
Search flight deals

Frequently asked questions about flying from Chicago to Santa Rosa

  • How far is Chicago to Santa Rosa Sonoma County by plane?

    Santa Rosa Sonoma County is 1853.6 mi away from Chicago. A reasonable flight in good conditions will take 7h 58m.

  • When did momondo last update prices for flights from Chicago to Santa Rosa Sonoma County Airport?

    Prices for flights from Chicago to Santa Rosa Sonoma County Airport were last updated today.

  • How many operators does momondo search for flights from Chicago to Santa Rosa Sonoma County Airport?

  • How old do you have to be to fly from Chicago to Santa Rosa Sonoma County Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Chicago to Santa Rosa Sonoma County Airport.

  • What documentation or ID do you need to fly to Santa Rosa Sonoma County Airport?

    The travel and health documents required for your trip to Santa Rosa Sonoma County Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Santa Rosa Sonoma County Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular airline from Chicago to Santa Rosa?

Best airlines flying from Chicago to Santa Rosa

Compare and see reviews for airlines that fly from Chicago to Santa Rosa with momondo
Airline
Rating
Free Cancellation
Price
Alaska AirlinesPriceFrom $285Free CancellationRating
7.9
12,553 reviews
Search Alaska Airlines flights
American AirlinesPriceFrom $465Free CancellationRating
7.1
11,724 reviews
Search American Airlines flights

Traveling to a place near San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
Fort Bragg
Mendocino
Ukiah
Little River
Point Arena

Why use momondo?

Why should I use momondo to find a flight deal from Chicago to Santa Rosa?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Chicago to Santa Rosa. momondo saves you time and could save you money on your trip.

Can I find flights from Chicago to Santa Rosa with flexible booking policies on momondo?

momondo does allow users to show only those flights to Santa Rosa from Chicago which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Chicago to Santa Rosa?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Santa Rosa from Chicago.

I’m not ready to book a flight from Chicago to Santa Rosa right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Chicago to Santa Rosa now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Santa Rosa and let you know when they change.

An easier way to manage your Santa Rosa trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
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