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O'Hare Intl

$147+ 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 3/2. Fares are subject to change and may not be available on all flights or dates of travel.
STS — ORD
Jan 22 — Jan 291
Thu 1/22
Thu 1/29
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 December 23, 2025.

This Alaska Airlines deal was found by Cheapflights users on 12/21. 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.
Tue 12/302:24 pmSTS - ORD
1 stop7h 35mAlaska Airlines
Mon 1/56:00 amORD - STS
1 stop9h 32mAlaska Airlines
Deal found 12/21$947
This American Airlines deal was found by Cheapflights users on 12/22. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/2712:59 pmSTS - ORD
1 stop6h 30mAmerican Airlines
Wed 12/317:06 amORD - STS
1 stop7h 23mAmerican Airlines
Deal found 12/22$1,021
This Alaska Airlines deal was found by Cheapflights users on 12/22. 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 12/276:00 amSTS - ORD
1 stop9h 12mAlaska Airlines
Tue 12/303:37 pmORD - STS
1 stop10h 22mAlaska Airlines
Deal found 12/22$1,132
This Alaska Airlines deal was found by Cheapflights users on 12/22. 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 12/276:00 amSTS - ORD
1 stop9h 12mAlaska Airlines
Wed 12/313:37 pmORD - STS
1 stop21h 46mAlaska Airlines
Deal found 12/22$1,150
This Alaska Airlines deal was found by Cheapflights users on 12/21. 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.
Mon 12/222:51 pmSTS - ORD
1 stop7h 08mAlaska Airlines
Sat 1/36:00 amORD - STS
1 stop9h 32mAlaska Airlines
Deal found 12/21$1,200
This American Airlines deal was found by Cheapflights users on 12/21. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/2112:59 pmSTS - ORD
1 stop6h 30mAmerican Airlines
Sat 12/278:55 amORD - STS
2 stops8h 56mAmerican Airlines
Deal found 12/21$1,320
This Alaska Airlines deal was found by Cheapflights users on 12/22. 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.
Sun 12/286:37 pmSTS - ORD
2 stops32h 25mAlaska Airlines
Tue 12/303:37 pmORD - STS
1 stop10h 22mAlaska Airlines
Deal found 12/22$1,331
This Alaska Airlines deal was found by Cheapflights users on 12/21. 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.
Sun 12/217:42 pmSTS - ORD
1 stop16h 55mAlaska Airlines
Sat 12/272:12 pmORD - STS
1 stop21h 12mAlaska Airlines
Deal found 12/21$1,338
This Alaska Airlines deal was found by Cheapflights users on 12/22. 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.
Sun 12/282:24 pmSTS - ORD
2 stops12h 38mAlaska Airlines
Wed 12/312:06 pmORD - STS
2 stops10h 11mAlaska Airlines
Deal found 12/22$1,518

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 December 23, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
1 star

Round-trip from

$273
(Alaska Airlines)

One-way from

$147
(Alaska Airlines)

Popular in

January

Cheapest in

November

Average price

$438
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
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Highest demand for flights based on searches. 10% potential increase in price ($66 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 9% potential price decrease ($45 potential savings vs. average RT price).
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Average for round-trip flights in December 2025
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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 December 23, 2025.
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

Sat 2/7

6:50 am-11:50 pm

2 stops15h 00m

Chicago O'Hare Intl

Fri 2/20

3:54 pm-9:14 am

2 stops19h 20m

$273

Santa RosaChicago

STS - ORD

STSORD

Santa Rosa Sonoma County

Sat 2/7

6:50 am-11:50 pm

2 stops15h 00m

Chicago O'Hare Intl

Tue 2/10

3:44 pm-7:19 pm

1 stop29h 35m

$278

Santa RosaChicago

STS - ORD

STSORD

Santa Rosa Sonoma County

Thu 3/19

7:00 am-11:59 pm

1 stop14h 59m

Chicago O'Hare Intl

Wed 4/1

8:20 am-7:05 pm

1 stop12h 45m

$323

Santa RosaChicago

STS - ORD

STSORD

Santa Rosa Sonoma County

Sun 1/18

9:38 am-11:37 pm

1 stop11h 59m

Chicago O'Hare Intl

Thu 1/22

6:06 pm-8:58 am

2 stops16h 52m

$328

Santa RosaChicago

STS - ORD

STSORD

Santa Rosa Sonoma County

Mon 3/2

6:37 pm-2:58 pm

1 stop18h 21m

$147

Santa RosaChicago

STS - ORD

STSORD

Santa Rosa Sonoma County

Sun 5/17

7:00 am-6:46 pm

1 stop9h 46m

$201

Santa RosaChicago

STS - ORD

STSORD

Santa Rosa Sonoma County

Tue 1/6

8:17 pm-5:02 am

1 stop6h 45m

$239

Santa RosaChicago

STS - ORD

STSORD

Santa Rosa Sonoma County

Sat 5/16

8:20 am-11:59 pm

2 stops13h 39m

$263

Santa RosaChicago

STS - ORD

STSORD

Santa Rosa Sonoma County

Mon 5/18

8:20 am-11:59 pm

2 stops13h 39m

$297

Santa RosaChicago

STS - ORD

STSORD

Santa Rosa Sonoma County

Mon 3/2

7:48 pm-2:53 pm

3 stops41h 05m

$327

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/20

Showing 1-10 of 11 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.

What is the cheapest time of day to fly from STS to ORD?

Find hourly flight availability from Santa Rosa to O'Hare Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 23, 2025.

Unlike at noon, when flights are generally more expensive, you can save up to 2% on flights from Santa Rosa to Chicago O'Hare Intl Airport by exploring options for tickets in the evening.

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 December 23, 2025.
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
11,506 reviews

Entertainment

7.0

Boarding

8.1

Food

7.1

Comfort

7.8

Crew

8.5

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
Alaska Airlines
8.0
Very good
11,506 reviews
Alaska Airlines
8.0
Very good
11,506 reviews

Entertainment

7.0

Boarding

8.1

Food

7.1

Comfort

7.8

Crew

8.5

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
American Airlines
7.2
Good
11,053 reviews
Alaska Airlines
8.0
Very good
11,506 reviews

Entertainment

7.0

Boarding

8.1

Food

7.1

Comfort

7.8

Crew

8.5

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.

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 15h. 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 45% 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
Gurnee
Elgin
Naperville
Hoffman Estates
Beloit
Delavan
Oak Brook
Downers Grove
Des Plaines
Elk Grove Village
Skokie
Lake Geneva
Bridgeview
Kenosha
Warrenville
Waukegan
Aurora
Evanston

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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 December 23, 2025.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$292Average$421FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$316Average$578FlexibilityNo cancel feeOn-time71%

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