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O'Hare Intl

$99+ Cheap flights from Santa Rosa (STS) to O'Hare Intl (ORD)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/15. Fares are subject to change and may not be available on all flights or dates of travel.
STS — ORD
Mar 7 — Mar 141
Sat 3/7
Sat 3/14
1 adult, Economy
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Cheap flight deals from Santa Rosa to O'Hare Intl

Cheapest flights from Santa Rosa to O'Hare Intl
Explore the most affordable flight options available from Santa Rosa to O'Hare Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 5, 2026.

This Expedia deal was found by Cheapflights users on 2/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/237:00 am
STS
-
ORD
1 stop10h 02m
Alaska Airlines
Wed 3/254:10 pm
ORD
-
STS
1 stop9h 03m
Alaska Airlines
Deal found 2/5$210
This Alaska Airlines deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/27:23 am
STS
-
ORD
1 stop9h 40m
Alaska Airlines
Wed 5/66:00 am
ORD
-
STS
1 stop8h 21m
Alaska Airlines
Deal found 2/2$217
This Alaska Airlines deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/177:57 pm
STS
-
ORD
1 stop8h 42m
Alaska Airlines
Tue 3/314:13 pm
ORD
-
STS
1 stop9h 00m
Alaska Airlines
Deal found 2/2$230
This Alaska Airlines deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/38:00 am
STS
-
ORD
1 stop27h 11m
Alaska Airlines
Tue 3/107:00 am
ORD
-
STS
1 stop16h 52m
Alaska Airlines
Deal found 2/2$260
This Alaska Airlines deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/17:46 pm
STS
-
ORD
1 stop8h 54m
Alaska Airlines
Thu 5/73:52 pm
ORD
-
STS
1 stop9h 35m
Alaska Airlines
Deal found 2/2$263
This Alaska Airlines deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/87:00 am
STS
-
ORD
1 stop10h 02m
Alaska Airlines
Mon 4/138:20 am
ORD
-
STS
1 stop16h 53m
Alaska Airlines
Deal found 2/4$265
This Alaska Airlines deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/11:13 pm
STS
-
ORD
1 stop8h 46m
Alaska Airlines
Wed 5/66:00 am
ORD
-
STS
1 stop8h 21m
Alaska Airlines
Deal found 2/2$270
This Alaska Airlines deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/77:46 pm
STS
-
ORD
1 stop21h 16m
Alaska Airlines
Mon 4/138:20 am
ORD
-
STS
1 stop16h 53m
Alaska Airlines
Deal found 2/4$303

Find flight deals from Santa Rosa to O'Hare Intl

Discover tips and strategies to find the most affordable flight options for your journey from Santa Rosa (STS) to O'Hare Intl (ORD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated February 5, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$210
(Alaska Airlines)

One-way from

$99
(Orbitz)

Popular in

January

Cheapest in

November

Average price

$338
Provider with most accurate pricing for Santa Rosa Sonoma County-Chicago O'Hare Intl flight deals.
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Provider most trusted by Cheapflights users for Santa Rosa Sonoma County-Chicago O'Hare Intl flights.
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From Santa Rosa Sonoma County to Chicago O'Hare Intl
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One-way flight from Santa Rosa Sonoma County to Chicago O'Hare Intl
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($54 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 8% potential price decrease ($44 potential savings vs. average RT price).
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Average for round-trip flights in February 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Santa Rosa to O'Hare Intl 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, Cheapflights users made 2,558,603 searches. Data last updated February 5, 2026.
Use the filters below to find and compare flights from Santa Rosa to Chicago O'Hare Intl Airport that are best for you.

Fly from

Santa Rosa

Fly to

O'Hare Intl

Route

Depart

Return

Price

Santa RosaChicago

STS - ORD

STSORD

Santa Rosa Sonoma County

Mon 3/23

7:00 am-7:02 pm

1 stop10h 02m

Chicago O'Hare Intl

Wed 3/25

4:10 pm-11:13 pm

1 stop9h 03m

$210

Santa RosaChicago

STS - ORD

STSORD

Santa Rosa Sonoma County

Wed 4/8

7:00 am-7:02 pm

1 stop10h 02m

Chicago O'Hare Intl

Mon 4/13

8:20 am-11:13 pm

1 stop16h 53m

$265

Santa RosaChicago

STS - ORD

STSORD

Santa Rosa Sonoma County

Fri 5/1

1:13 pm-11:59 pm

1 stop8h 46m

Chicago O'Hare Intl

Wed 5/6

6:00 am-12:21 pm

1 stop8h 21m

$270

Santa RosaChicago

STS - ORD

STSORD

Santa Rosa Sonoma County

Tue 3/3

6:50 pm-1:11 pm

1 stop16h 21m

Chicago O'Hare Intl

Tue 3/10

8:20 am-7:17 pm

2 stops12h 57m

$283

Santa RosaChicago

STS - ORD

STSORD

Santa Rosa Sonoma County

Tue 3/17

7:57 pm-6:39 am

1 stop8h 42m

Chicago O'Hare Intl

Tue 3/31

2:09 pm-6:01 pm

2 stops29h 52m

$285

Santa RosaChicago

STS - ORD

STSORD

Santa Rosa Sonoma County

Wed 5/13

7:38 pm-11:41 pm

1 stop26h 03m

Chicago O'Hare Intl

Sat 5/16

9:00 am-11:26 pm

1 stop16h 26m

$303

Santa RosaChicago

STS - ORD

STSORD

Santa Rosa Sonoma County

Mon 5/11

7:23 am-7:03 pm

1 stop9h 40m

Chicago O'Hare Intl

Thu 5/14

9:00 am-11:26 pm

1 stop16h 26m

$303

Santa RosaChicago

STS - ORD

STSORD

Santa Rosa Sonoma County

Sun 5/10

7:23 am-7:03 pm

1 stop9h 40m

Chicago O'Hare Intl

Thu 5/14

3:43 pm-11:26 pm

1 stop9h 43m

$303

Santa RosaChicago

STS - ORD

STSORD

Santa Rosa Sonoma County

Sun 3/22

7:00 am-11:59 pm

1 stop14h 59m

Chicago O'Hare Intl

Tue 3/24

4:10 pm-11:13 pm

1 stop9h 03m

$310

Santa RosaChicago

STS - ORD

STSORD

Santa Rosa Sonoma County

Mon 4/6

6:53 pm-6:39 am

1 stop9h 46m

Chicago O'Hare Intl

Mon 4/13

8:20 am-11:13 pm

1 stop16h 53m

$318

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/3

Showing 1-10 of 20 results
1
2
  • Most accurate provider: When it comes to deals on Santa Rosa-Chicago O'Hare Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Santa Rosa-Chicago O'Hare Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Santa Rosa-Chicago O'Hare Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Santa Rosa-Chicago O'Hare Intl Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Santa Rosa-Chicago O'Hare Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Santa Rosa to O'Hare Intl

Have a flexible travel schedule? Discover the best time to fly to O'Hare Intl from Santa Rosa with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Santa Rosa to Chicago O'Hare Intl Airport

What is the cheapest month to book a flight from Santa Rosa to Chicago O'Hare Intl Airport?

Currently, April is the cheapest month in which you can book a flight from Santa Rosa to Chicago O'Hare Intl Airport (average of $126). Flying from Santa Rosa to Chicago O'Hare Intl Airport in November is currently the most expensive (average of $242). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing O'Hare Intl

Get insights into the airlines that provide service to O'Hare Intl. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to O'Hare Intl. Reviews last updated February 5, 2026.
Peruse reviews from past customers who have flown with Alaska Airlines and American Airlines from Santa Rosa to Chicago O'Hare Intl Airport to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
11,840 reviews

Comfort

7.8

Crew

8.5

Overall

8.0

Food

7.1

Boarding

8.1

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading
Alaska Airlines
8.0
Very good
11,840 reviews
Alaska Airlines
8.0
Very good
11,840 reviews

Comfort

7.8

Crew

8.5

Overall

8.0

Food

7.1

Boarding

8.1

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading
American Airlines
7.2
Good
11,237 reviews
Alaska Airlines
8.0
Very good
11,840 reviews

Comfort

7.8

Crew

8.5

Overall

8.0

Food

7.1

Boarding

8.1

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading

Related info for your journey

Find useful and relevant information for your journey from Santa Rosa to O'Hare Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Santa Rosa to Chicago O'Hare Intl?

    Located just 7.2 mi from the city center, Santa Rosa Sonoma County is the airport most travelers will use when flying to Chicago O'Hare Intl from Santa Rosa. Booking flights from Sonoma County (STS) to Chicago O'Hare Intl should be relatively easy as there are 0 daily outbound flights to Chicago O'Hare Intl from 2 different airlines.

  • How long is the flight from Santa Rosa to Chicago O'Hare Intl Airport?

    There are many flights that can get you from Santa Rosa to Chicago O'Hare Intl Airport in 10h 02m. Fly via Alaska Airlines to get the fastest option. The distance from Santa Rosa to Chicago O'Hare Intl Airport is about 1842 mi.

  • What are the cheapest airlines flying from Santa Rosa to Chicago O'Hare Intl Airport round-trip?

    According to our current data, Alaska Airlines ($292), and American Airlines ($316) offers the cheapest pricing from Santa Rosa to Chicago O'Hare Intl Airport. These flights start at 46% lower than the current average price 3 months from now.

  • Can I find deals for flights from Santa Rosa to O'Hare Intl that include hotel bookings?

    Yes. In addition to deals on Santa Rosa to O'Hare Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Santa Rosa to O'Hare Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Santa Rosa to O'Hare Intl.

  • Can I find deals for business class flights from Santa Rosa to O'Hare Intl?

    Yes. Cheapflights offers flight deals from Santa Rosa to O'Hare Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Santa Rosa to Chicago O'Hare Intl Airport?

    Currently, April is the cheapest month in which you can book a flight from Santa Rosa to Chicago O'Hare Intl Airport (average of $126). Flying from Santa Rosa to Chicago O'Hare Intl Airport in November is currently the most expensive (average of $242). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Chicago O'Hare Intl Airport?

Book flights to Chicago O'Hare Intl Airport if you plan to visit one of these locations
Schaumburg
Rosemont
Naperville
Gurnee
Elgin
Hoffman Estates
Beloit
Delavan
Oak Brook
Des Plaines
Downers Grove
Elk Grove Village
Skokie
Libertyville
Lake Geneva
Waukegan
Bridgeview
Kenosha
Warrenville
Aurora

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Alternative routes for Santa Rosa to O'Hare Intl

See prices for flight routes from nearby airports that may be better suited for you.
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Top 2 airlines flying from Santa Rosa to O'Hare Intl

Discover the top 2 airlines that operate flights from Santa Rosa to O'Hare Intl. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 5, 2026.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$292Average$408FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$316Average$563FlexibilityNo cancel feeOn-time71%

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