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O'Hare Intl

$112+ 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 3/18. Fares are subject to change and may not be available on all flights or dates of travel.
STS — ORD
Mar 26 — Apr 21
Thu 3/26
Thu 4/2
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 24, 2026.

This Alaska Airlines deal was found by Cheapflights users on 2/23. 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 4/287:23 am
STS
-
ORD
1 stop9h 40m
Alaska Airlines
Tue 5/192:10 pm
ORD
-
STS
1 stop11h 46m
Alaska Airlines
Deal found 2/23$216
This Alaska Airlines deal was found by Cheapflights users on 2/23. 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.
Thu 4/237:23 am
STS
-
ORD
1 stop9h 40m
Alaska Airlines
Mon 4/277:59 pm
ORD
-
STS
1 stop16h 59m
Alaska Airlines
Deal found 2/23$223
This Alaska Airlines deal was found by Cheapflights users on 2/20. 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.
Mon 5/47:23 am
STS
-
ORD
1 stop27h 50m
Alaska Airlines
Thu 5/73:52 pm
ORD
-
STS
1 stop9h 35m
Alaska Airlines
Deal found 2/20$228
This Alaska Airlines deal was found by Cheapflights users on 2/23. 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.
Mon 4/278:00 pm
STS
-
ORD
1 stop21h 03m
Alaska Airlines
Tue 5/192:10 pm
ORD
-
STS
1 stop11h 46m
Alaska Airlines
Deal found 2/23$240
This Alaska Airlines deal was found by Cheapflights users on 2/23. 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 4/2810:01 am
STS
-
ORD
1 stop7h 02m
Alaska Airlines
Wed 5/132:10 pm
ORD
-
STS
1 stop11h 40m
Alaska Airlines
Deal found 2/23$246
This Alaska Airlines deal was found by Cheapflights users on 2/21. 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.
Thu 4/97:00 am
STS
-
ORD
1 stop10h 02m
Alaska Airlines
Mon 4/137:59 pm
ORD
-
STS
1 stop16h 04m
Alaska Airlines
Deal found 2/21$248
This Alaska Airlines deal was found by Cheapflights users on 2/23. 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.
Thu 4/307:23 am
STS
-
ORD
1 stop14h 20m
Alaska Airlines
Tue 5/192:10 pm
ORD
-
STS
1 stop11h 46m
Alaska Airlines
Deal found 2/23$250
This Alaska Airlines deal was found by Cheapflights users on 2/23. 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 4/2810:01 am
STS
-
ORD
1 stop7h 02m
Alaska Airlines
Mon 5/187:59 pm
ORD
-
STS
1 stop29h 57m
Alaska Airlines
Deal found 2/23$256
This Alaska Airlines deal was found by Cheapflights users on 2/20. 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.
Mon 4/278:00 pm
STS
-
ORD
1 stop21h 03m
Alaska Airlines
Mon 5/43:52 pm
ORD
-
STS
1 stop9h 35m
Alaska Airlines
Deal found 2/20$258
This Alaska Airlines deal was found by Cheapflights users on 2/23. 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.
Mon 4/278:00 pm
STS
-
ORD
1 stop21h 03m
Alaska Airlines
Wed 5/132:10 pm
ORD
-
STS
1 stop11h 40m
Alaska Airlines
Deal found 2/23$270

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 24, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$216
(Alaska Airlines)

One-way from

$112
(Alaska Airlines)

Popular in

November

Cheapest in

September

Average price

$372
Provider with most accurate pricing for Santa Rosa Sonoma County-Chicago O'Hare Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Santa Rosa Sonoma County-Chicago O'Hare Intl flights.
Search Deals
From Santa Rosa Sonoma County to Chicago O'Hare Intl
Search Deals
One-way flight from Santa Rosa Sonoma County to Chicago O'Hare Intl
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($51 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).
Search Deals
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 24, 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

Thu 4/23

7:23 am-7:03 pm

1 stop9h 40m

Chicago O'Hare Intl

Mon 4/27

8:50 am-10:58 am

1 stop28h 08m

$268

Santa RosaChicago

STS - ORD

STSORD

Santa Rosa Sonoma County

Tue 5/26

7:01 am-6:50 pm

1 stop9h 49m

Chicago O'Hare Intl

Wed 9/23

9:20 am-2:28 pm

1 stop7h 08m

$381

Santa RosaChicago

STS - ORD

STSORD

Santa Rosa Sonoma County

Fri 4/10

7:46 pm-7:02 pm

1 stop21h 16m

Chicago O'Hare Intl

Thu 4/16

4:10 pm-11:13 pm

1 stop9h 03m

$402

Santa RosaChicago

STS - ORD

STSORD

Santa Rosa Sonoma County

Tue 4/28

7:00 am-11:59 pm

2 stops14h 59m

Chicago O'Hare Intl

Tue 5/5

6:00 am-4:23 pm

2 stops12h 23m

$410

Santa RosaChicago

STS - ORD

STSORD

Santa Rosa Sonoma County

Thu 6/11

7:15 pm-5:00 am

1 stop7h 45m

Chicago O'Hare Intl

Fri 6/12

3:41 pm-10:56 pm

1 stop9h 15m

$414

Santa RosaChicago

STS - ORD

STSORD

Santa Rosa Sonoma County

Thu 6/11

7:15 pm-5:00 am

1 stop7h 45m

Chicago O'Hare Intl

Mon 6/15

7:46 pm-10:56 pm

1 stop29h 10m

$460

Santa RosaChicago

STS - ORD

STSORD

Santa Rosa Sonoma County

Wed 6/10

10:57 am-11:59 pm

2 stops11h 02m

Chicago O'Hare Intl

Fri 6/12

3:41 pm-10:56 pm

1 stop9h 15m

$466

Santa RosaChicago

STS - ORD

STSORD

Santa Rosa Sonoma County

Sun 6/14

6:00 am-11:39 pm

1 stop15h 39m

Chicago O'Hare Intl

Wed 6/17

7:20 am-12:34 pm

1 stop7h 14m

$470

Santa RosaChicago

STS - ORD

STSORD

Santa Rosa Sonoma County

Mon 5/25

7:01 am-1:14 pm

1 stop28h 13m

Chicago O'Hare Intl

Wed 9/23

9:20 am-2:28 pm

1 stop7h 08m

$482

Santa RosaChicago

STS - ORD

STSORD

Santa Rosa Sonoma County

Tue 3/24

2:12 pm-6:39 am

2 stops14h 27m

Chicago O'Hare Intl

Thu 3/26

6:00 am-6:01 pm

1 stop14h 01m

$488

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/21

Showing 1-10 of 21 results
1
2
3
  • 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 $123). 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 24, 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
11,948 reviews

Entertainment

7.0

Food

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Boarding

8.1

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
11,948 reviews
Alaska Airlines
8.0
Very good
11,948 reviews

Entertainment

7.0

Food

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Boarding

8.1

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
11,344 reviews
Alaska Airlines
8.0
Very good
11,948 reviews

Entertainment

7.0

Food

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Boarding

8.1

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 9h 40m. 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.

  • 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 $123). 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
Gurnee
Naperville
Hoffman Estates
Beloit
Delavan
Des Plaines
Elgin
Downers Grove
Elk Grove Village
Skokie
Oak Brook
South Holland
Libertyville
Oakbrook Terrace
Lake Geneva
Waukegan
Bridgeview
Kenosha

Browse thousands of different options on Cheapflights for your next trip

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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 24, 2026.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$292Average$421FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$316Average$568FlexibilityNo cancel feeOn-time71%

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