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Cheap flights from Chicago O'Hare Intl Airport to San Francisco from $150

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 O'Hare Intl Airport to San Francisco departing on 8/15. 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 O'Hare Intl Airport to San Francisco

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
5:00 am - 12:38 pm
ORD
-
STS
9h 38m
1 stop
American Airlines Logo
1:08 pm - 10:31 pm
STS
-
ORD
7h 23m
1 stop
$299American Airlines
Sat, Sep 26 - Sat, Oct 3
Delta Logo
9:30 am - 4:08 pm
ORD
-
STS
8h 38m
2 stops
Delta Logo
12:39 pm - 9:53 pm
STS
-
ORD
7h 14m
1 stop
$304Delta
Tue, Dec 15 - Wed, Jan 6
Delta Logo
9:30 am - 4:08 pm
ORD
-
STS
8h 38m
2 stops
Delta Logo
11:25 am - 9:53 pm
STS
-
ORD
8h 28m
1 stop
$314Delta
Tue, Dec 15 - Thu, Dec 31
Delta Logo
8:55 am - 4:08 pm
ORD
-
STS
9h 13m
2 stops
Delta Logo
11:25 am - 11:50 pm
STS
-
ORD
10h 25m
2 stops
$319Delta
Sat, Nov 7 - Tue, Nov 10
Alaska Airlines Logo
7:00 am - 1:06 pm
ORD
-
STS
8h 06m
1 stop
Alaska Airlines Logo
6:16 am - 6:53 pm
STS
-
ORD
10h 37m
1 stop
$321Alaska Airlines
Wed, Oct 7 - Tue, Oct 13
Alaska Airlines Logo
2:18 pm - 11:54 pm
ORD
-
STS
11h 36m
1 stop
Alaska Airlines Logo
6:13 am - 7:21 pm
STS
-
ORD
11h 08m
1 stop
$335Alaska Airlines
Thu, Sep 10 - Thu, Sep 24
Alaska Airlines Logo
7:20 am - 9:59 am
ORD
-
STS
28h 39m
1 stop
Alaska Airlines Logo
7:00 am - 6:20 pm
STS
-
ORD
9h 20m
1 stop
$336Alaska Airlines
Tue, Oct 20 - Fri, Oct 30
American Airlines Logo
5:00 am - 12:38 pm
ORD
-
STS
9h 38m
1 stop
American Airlines Logo
1:08 pm - 12:30 am
STS
-
ORD
9h 22m
1 stop
$342American Airlines
Tue, Sep 15 - Tue, Sep 22
Alaska Airlines Logo
2:25 pm - 9:48 am
ORD
-
STS
21h 23m
1 stop
Alaska Airlines Logo
6:40 am - 7:00 pm
STS
-
ORD
10h 20m
1 stop
$343Alaska Airlines
Tue, Nov 3 - Tue, Nov 10
Alaska Airlines Logo
7:00 am - 1:06 pm
ORD
-
STS
8h 06m
1 stop
Alaska Airlines Logo
7:00 am - 6:20 pm
STS
-
ORD
9h 20m
1 stop
$344Alaska Airlines
Wed, Oct 21 - Fri, Oct 30

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American Airlines flights from Chicago O'Hare Intl Airport to Santa Rosa

Our best American Airlines deals on Chicago O'Hare Intl Airport to Santa Rosa flight tickets
American Airlines
Sep 26
ORD5:00 amChicago O'Hare Intl
9h 38m
1 stop
STS12:38 pmSanta Rosa Sonoma County
Oct 3
STS1:08 pmSanta Rosa Sonoma County
7h 23m
1 stop
ORD10:31 pmChicago O'Hare Intl
$299
American Airlines
Sep 15
ORD5:00 amChicago O'Hare Intl
9h 38m
1 stop
STS12:38 pmSanta Rosa Sonoma County
Sep 22
STS1:08 pmSanta Rosa Sonoma County
9h 22m
1 stop
ORD12:30 amChicago O'Hare Intl
$342
American Airlines
Sep 2
ORD5:00 amChicago O'Hare Intl
9h 28m
1 stop
STS12:28 pmSanta Rosa Sonoma County
Sep 4
STS12:58 pmSanta Rosa Sonoma County
8h 32m
1 stop
ORD11:30 pmChicago O'Hare Intl
$359

Alaska Airlines flights from Chicago O'Hare Intl Airport to Santa Rosa

Our best Alaska Airlines deals on Chicago O'Hare Intl Airport to Santa Rosa flight tickets
Alaska Airlines
Oct 7
ORD7:00 amChicago O'Hare Intl
8h 06m
1 stop
STS1:06 pmSanta Rosa Sonoma County
Oct 13
STS6:16 amSanta Rosa Sonoma County
10h 37m
1 stop
ORD6:53 pmChicago O'Hare Intl
$321
Alaska Airlines
Sep 10
ORD2:18 pmChicago O'Hare Intl
11h 36m
1 stop
STS11:54 pmSanta Rosa Sonoma County
Sep 24
STS6:13 amSanta Rosa Sonoma County
11h 08m
1 stop
ORD7:21 pmChicago O'Hare Intl
$335
Alaska Airlines
Oct 20
ORD7:20 amChicago O'Hare Intl
28h 39m
1 stop
STS9:59 amSanta Rosa Sonoma County
Oct 30
STS7:00 amSanta Rosa Sonoma County
9h 20m
1 stop
ORD6:20 pmChicago O'Hare Intl
$336

momondo Fare Finder

 
Customize your flight search to find flights from Chicago O'Hare Intl Airport 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 July 26, 2026.
Use the filters below to find and compare flights from Chicago O'Hare Intl Airport 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 9/26

5:00 am-12:38 pm

1 stop9h 38m

Santa Rosa Sonoma County

Sat 10/3

1:08 pm-10:31 pm

1 stop7h 23m

$299
Quickest round-trip

ChicagoSanta Rosa

ORD - STS

ORDSTS

Chicago O'Hare Intl

Tue 12/15

9:30 am-4:08 pm

2 stops8h 38m

Santa Rosa Sonoma County

Wed 1/6

12:39 pm-9:53 pm

1 stop7h 14m

$304

ChicagoSanta Rosa

ORD - STS

ORDSTS

Chicago O'Hare Intl

Tue 12/15

9:30 am-4:08 pm

2 stops8h 38m

Santa Rosa Sonoma County

Thu 12/31

11:25 am-9:53 pm

1 stop8h 28m

$314

ChicagoSanta Rosa

ORD - STS

ORDSTS

Chicago O'Hare Intl

Sat 11/7

8:55 am-4:08 pm

2 stops9h 13m

Santa Rosa Sonoma County

Tue 11/10

11:25 am-11:50 pm

2 stops10h 25m

$319

ChicagoSanta Rosa

ORD - STS

ORDSTS

Chicago O'Hare Intl

Wed 10/7

7:00 am-1:06 pm

1 stop8h 06m

Santa Rosa Sonoma County

Tue 10/13

6:16 am-6:53 pm

1 stop10h 37m

$321

ChicagoSanta Rosa

ORD - STS

ORDSTS

Chicago O'Hare Intl

Thu 9/10

2:18 pm-11:54 pm

1 stop11h 36m

Santa Rosa Sonoma County

Thu 9/24

6:13 am-7:21 pm

1 stop11h 08m

$335

ChicagoSanta Rosa

ORD - STS

ORDSTS

Chicago O'Hare Intl

Tue 10/20

7:20 am-9:59 am

1 stop28h 39m

Santa Rosa Sonoma County

Fri 10/30

7:00 am-6:20 pm

1 stop9h 20m

$336

ChicagoSanta Rosa

ORD - STS

ORDSTS

Chicago O'Hare Intl

Tue 9/15

5:00 am-12:38 pm

1 stop9h 38m

Santa Rosa Sonoma County

Tue 9/22

1:08 pm-12:30 am

1 stop9h 22m

$342

ChicagoSanta Rosa

ORD - STS

ORDSTS

Chicago O'Hare Intl

Tue 11/3

2:25 pm-9:48 am

1 stop21h 23m

Santa Rosa Sonoma County

Tue 11/10

6:40 am-7:00 pm

1 stop10h 20m

$343

ChicagoSanta Rosa

ORD - STS

ORDSTS

Chicago O'Hare Intl

Wed 10/21

7:00 am-1:06 pm

1 stop8h 06m

Santa Rosa Sonoma County

Fri 10/30

7:00 am-6:20 pm

1 stop9h 20m

$344

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 O'Hare Intl Airport 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 O'Hare Intl Airport during the month January is also very affordable. Most momondo users find prices during this month for around $0.

When to book flights from Chicago O'Hare Intl Airport to Santa Rosa

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

Cheap Chicago O'Hare Intl Airport to Santa Rosa (ORD to STS) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Chicago O'Hare Intl Airport to Santa Rosa

Fastest flight time

8h 09m

Direct flights

None
The fastest flight from Chicago O'Hare Intl Airport to Santa Rosa takes 8h 09m
There are no direct flights from Chicago O'Hare Intl Airport to Santa Rosa. There are no popular flight routes from Chicago O'Hare Intl Airport to Santa Rosa.
Search flight deals

Frequently asked questions about flying from Chicago O'Hare Intl Airport to Santa Rosa

  • How far is Chicago O'Hare Intl to Santa Rosa Sonoma County by plane?

    A flight from Chicago O'Hare Intl to Santa Rosa Sonoma County will travel around 1838.9 mi. Typically, this will take 8h 09m by plane in normal conditions.

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

    Prices for flights from Chicago O'Hare Intl Airport to Santa Rosa Sonoma County Airport are refreshed on a daily basis.

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

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Chicago O'Hare Intl Airport 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 O'Hare Intl Airport to Santa Rosa?

Best airlines flying from Chicago O'Hare Intl Airport to Santa Rosa

Compare and see reviews for airlines that fly from Chicago O'Hare Intl Airport to Santa Rosa with momondo
Airline
Rating
Free Cancellation
Price
Alaska AirlinesPriceFrom $285Free CancellationRating
7.9
12,717 reviews
Search Alaska Airlines flights
American AirlinesPriceFrom $412Free CancellationRating
7.1
11,845 reviews
Search American Airlines flights

Traveling to a place near San Francisco?

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Fort Bragg
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Point Arena

Why use momondo?

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

It is quick and easy to find Chicago to Santa Rosa flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Santa Rosa that suits you.

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

Yes. momondo allows you to filter the results for Chicago to Santa Rosa flights to just show those with flexible booking policies.

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.

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