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Cheap flights from Chicago O'Hare Intl Airport to San Francisco from $129

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 12/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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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.
Alaska Airlines Logo
3:49 pm - 11:11 pmORD-STS
9h 22m1 stop
Alaska Airlines Logo
2:30 pm - 11:37 pmSTS-ORD
7h 07m1 stop
$250Alaska Airlines
Find Deal
Thu, Feb 5 - Wed, Feb 11
Alaska Airlines Logo
3:49 pm - 11:11 pmORD-STS
9h 22m1 stop
Alaska Airlines Logo
6:52 pm - 2:29 pmSTS-ORD
17h 37m1 stop
$258Alaska Airlines
Find Deal
Thu, Jan 22 - Sun, Jan 25
Alaska Airlines Logo
2:59 pm - 10:46 pmORD-STS
9h 47m1 stop
Alaska Airlines Logo
6:58 am - 1:59 pmSTS-ORD
29h 01m1 stop
$265Alaska Airlines
Find Deal
Mon, Mar 2 - Fri, Mar 6
American Airlines Logo
5:00 am - 12:28 pmORD-STS
9h 28m1 stop
American Airlines Logo
12:58 pm - 9:15 pmSTS-ORD
6h 17m1 stop
$479American Airlines
Find Deal
Sun, Feb 15 - Thu, Feb 19
American Airlines Logo
5:05 am - 12:25 pmORD-STS
9h 20m2 stops
American Airlines Logo
12:55 pm - 12:23 amSTS-ORD
9h 28m1 stop
$484American Airlines
Find Deal
Thu, Jan 29 - Mon, Feb 2
Southwest Logo
6:15 am - 4:00 pmORD-STS
11h 45m1 stop
Southwest Logo
11:00 am - 11:55 pmSTS-ORD
10h 55m2 stops
$506Southwest
Find Deal
Thu, Apr 16 - Mon, Apr 20
Southwest Logo
8:00 am - 4:00 pmORD-STS
10h 00m2 stops
Southwest Logo
6:00 am - 6:50 pmSTS-ORD
10h 50m2 stops
$517Southwest
Find Deal
Thu, Apr 16 - Mon, Apr 20
American Airlines Logo
8:35 am - 3:47 pmORD-STS
9h 12m1 stop
American Airlines Logo
4:17 pm - 12:41 amSTS-ORD
6h 24m1 stop
$520American Airlines
Find Deal
Thu, Apr 16 - Mon, Apr 20
American Airlines Logo
5:00 am - 9:39 amORD-STS
6h 39m1 stop
American Airlines Logo
1:18 pm - 10:23 pmSTS-ORD
7h 05m1 stop
$524American Airlines
Find Deal
Thu, Nov 27 - Tue, Dec 2
Southwest Logo
8:00 am - 4:00 pmORD-STS
10h 00m2 stops
Southwest Logo
11:35 am - 10:55 pmSTS-ORD
9h 20m1 stop
$548Southwest
Find Deal
Thu, Apr 16 - Sun, Apr 19

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
Feb 5
ORD3:49 pmChicago O'Hare Intl
9h 22m
1 stop
STS11:11 pmSanta Rosa Sonoma County
Feb 11
STS2:30 pmSanta Rosa Sonoma County
7h 07m
1 stop
ORD11:37 pmChicago O'Hare Intl
$250
Find similar
Alaska Airlines
Jan 22
ORD3:49 pmChicago O'Hare Intl
9h 22m
1 stop
STS11:11 pmSanta Rosa Sonoma County
Jan 25
STS6:52 pmSanta Rosa Sonoma County
17h 37m
1 stop
ORD2:29 pmChicago O'Hare Intl
$258
Find similar
Alaska Airlines
Mar 2
ORD2:59 pmChicago O'Hare Intl
9h 47m
1 stop
STS10:46 pmSanta Rosa Sonoma County
Mar 6
STS6:58 amSanta Rosa Sonoma County
29h 01m
1 stop
ORD1:59 pmChicago O'Hare Intl
$265
Find similar

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
Feb 15
ORD5:00 amChicago O'Hare Intl
9h 28m
1 stop
STS12:28 pmSanta Rosa Sonoma County
Feb 19
STS12:58 pmSanta Rosa Sonoma County
6h 17m
1 stop
ORD9:15 pmChicago O'Hare Intl
$479
Find similar
American Airlines
Jan 29
ORD5:05 amChicago O'Hare Intl
9h 20m
2 stops
STS12:25 pmSanta Rosa Sonoma County
Feb 2
STS12:55 pmSanta Rosa Sonoma County
9h 28m
1 stop
ORD12:23 amChicago O'Hare Intl
$484
Find similar
American Airlines
Apr 16
ORD8:35 amChicago O'Hare Intl
9h 12m
1 stop
STS3:47 pmSanta Rosa Sonoma County
Apr 20
STS4:17 pmSanta Rosa Sonoma County
6h 24m
1 stop
ORD12:41 amChicago O'Hare Intl
$520
Find similar

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 November 5, 2025.
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

ChicagoSanta Rosa

ORD - STS

ORDSTS

Chicago O'Hare Intl

Thu 2/5

3:49 pm-11:11 pm

1 stop9h 22m

Santa Rosa Sonoma County

Wed 2/11

2:30 pm-11:37 pm

1 stop7h 07m

$250

ChicagoSanta Rosa

ORD - STS

ORDSTS

Chicago O'Hare Intl

Thu 1/22

3:49 pm-11:11 pm

1 stop9h 22m

Santa Rosa Sonoma County

Sun 1/25

6:52 pm-2:29 pm

1 stop17h 37m

$258

ChicagoSanta Rosa

ORD - STS

ORDSTS

Chicago O'Hare Intl

Mon 3/2

2:59 pm-10:46 pm

1 stop9h 47m

Santa Rosa Sonoma County

Fri 3/6

6:58 am-1:59 pm

1 stop29h 01m

$265

ChicagoSanta Rosa

ORD - STS

ORDSTS

Chicago O'Hare Intl

Sun 2/15

5:00 am-12:28 pm

1 stop9h 28m

Santa Rosa Sonoma County

Thu 2/19

12:58 pm-9:15 pm

1 stop6h 17m

$479

ChicagoSanta Rosa

ORD - STS

ORDSTS

Chicago O'Hare Intl

Thu 1/29

5:05 am-12:25 pm

2 stops9h 20m

Santa Rosa Sonoma County

Mon 2/2

12:55 pm-12:23 am

1 stop9h 28m

$484

ChicagoSanta Rosa

ORD - STS

ORDSTS

Chicago O'Hare Intl

Thu 4/16

6:15 am-4:00 pm

1 stop11h 45m

Santa Rosa Sonoma County

Mon 4/20

11:00 am-11:55 pm

2 stops10h 55m

$506

ChicagoSanta Rosa

ORD - STS

ORDSTS

Chicago O'Hare Intl

Thu 4/16

8:00 am-4:00 pm

2 stops10h 00m

Santa Rosa Sonoma County

Mon 4/20

6:00 am-6:50 pm

2 stops10h 50m

$517

ChicagoSanta Rosa

ORD - STS

ORDSTS

Chicago O'Hare Intl

Thu 4/16

8:35 am-3:47 pm

1 stop9h 12m

Santa Rosa Sonoma County

Mon 4/20

4:17 pm-12:41 am

1 stop6h 24m

$520

ChicagoSanta Rosa

ORD - STS

ORDSTS

Chicago O'Hare Intl

Thu 11/27

5:00 am-9:39 am

1 stop6h 39m

Santa Rosa Sonoma County

Tue 12/2

1:18 pm-10:23 pm

1 stop7h 05m

$524

ChicagoSanta Rosa

ORD - STS

ORDSTS

Chicago O'Hare Intl

Thu 4/16

8:00 am-4:00 pm

2 stops10h 00m

Santa Rosa Sonoma County

Sun 4/19

11:35 am-10:55 pm

1 stop9h 20m

$548

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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 day to depart on your flight to Santa Rosa?

Our data shows that Tuesday is the least expensive day to fly to Santa Rosa. Tickets to fly out on this day can be as low as $517. On the other hand, Monday is the most expensive day to depart from Chicago O'Hare Intl Airport because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $703.

What is the cheapest time of day to depart on your flight to Santa Rosa?

Our data shows that the cheapest Chicago O'Hare Intl Airport to Santa Rosa flights are usually those with departure times in the evening. Our users have found flights to Santa Rosa in the evening for as low as $453. Flights in the morning are often more expensive with an average ticket price of $577.

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

Direct flights

None
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.
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  • 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 6h 39m 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
American AirlinesPriceFrom $384Free CancellationRating
7.2
11,042 reviews
Search American Airlines flights
Hawaiian AirlinesPriceFrom $444Free CancellationRating
7.8
2,804 reviews
Search Hawaiian 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?

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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