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O'Hare Intl

$158+ 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 10/21. Fares are subject to change and may not be available on all flights or dates of travel.
STS — ORD
Aug 19 — Aug 261
Tue 8/19
Tue 8/26
1 adult, Economy
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Cheap 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 August 14, 2025.

Round-trip from

$272
(Alaska Airlines)

One-way from

$158
(Alaska Airlines)

Popular in

January

Cheapest in

December

Average price

$366
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. 4% potential increase in price ($25 potential increase over avg. RT price).
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Cheapest flight prices on average. 9% potential price decrease ($49 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Find 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 August 14, 2025.

This Alaska Airlines deal was found by Cheapflights users on 8/12. 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 10/149:43 amSTS - ORD
2 stops12h 16mAlaska Airlines
Wed 10/223:50 pmORD - STS
1 stop9h 26mAlaska Airlines
Deal found 8/12$272
This Trip.com deal was found by Cheapflights users on 8/14. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/87:03 amSTS - ORD
1 stop13h 40mMultiple Airlines
Thu 9/116:30 amORD - STS
1 stop19h 29mMultiple Airlines
Deal found 8/14$284
This Alaska Airlines deal was found by Cheapflights users on 8/12. 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 10/86:25 amSTS - ORD
1 stop15h 34mAlaska Airlines
Wed 10/223:50 pmORD - STS
1 stop9h 26mAlaska Airlines
Deal found 8/12$287
This Alaska Airlines deal was found by Cheapflights users on 8/12. 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 10/2810:50 amSTS - ORD
2 stops11h 09mAlaska Airlines
Wed 11/192:54 pmORD - STS
1 stop11h 03mAlaska Airlines
Deal found 8/12$290
This Hawaiian Airlines deal was found by Cheapflights users on 8/11. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/12:28 pmSTS - ORD
1 stop7h 35mHawaiian Airlines
Sat 10/113:50 pmORD - STS
1 stop9h 26mHawaiian Airlines
Deal found 8/11$291
This Alaska Airlines deal was found by Cheapflights users on 8/11. 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 9/302:28 pmSTS - ORD
1 stop7h 35mAlaska Airlines
Sat 10/113:50 pmORD - STS
1 stop9h 26mAlaska Airlines
Deal found 8/11$293
This Alaska Airlines deal was found by Cheapflights users on 8/12. 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 10/106:25 amSTS - ORD
1 stop30h 25mAlaska Airlines
Sat 10/253:50 pmORD - STS
1 stop9h 26mAlaska Airlines
Deal found 8/12$306
This Trip.com deal was found by Cheapflights users on 8/12. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/47:03 amSTS - ORD
1 stop13h 40mMultiple Airlines
Wed 9/108:00 amORD - STS
1 stop7h 36mMultiple Airlines
Deal found 8/12$307
This Alaska Airlines deal was found by Cheapflights users on 8/12. 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 10/12:28 pmSTS - ORD
1 stop7h 35mAlaska Airlines
Sat 10/1110:00 amORD - STS
1 stop15h 16mAlaska Airlines
Deal found 8/12$311

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 August 14, 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

Tue 10/14

9:43 am-11:59 pm

2 stops12h 16m

Chicago O'Hare Intl

Tue 10/28

9:20 am-2:24 pm

1 stop7h 04m

$272

Santa RosaChicago

STS - ORD

STSORD

Santa Rosa Sonoma County

Tue 10/14

9:43 am-11:59 pm

2 stops12h 16m

Chicago O'Hare Intl

Sat 10/25

3:50 pm-11:16 pm

1 stop9h 26m

$272

Santa RosaChicago

STS - ORD

STSORD

Santa Rosa Sonoma County

Tue 10/21

9:43 am-11:59 pm

2 stops12h 16m

Chicago O'Hare Intl

Wed 11/5

9:20 am-2:24 pm

1 stop7h 04m

$272

Santa RosaChicago

STS - ORD

STSORD

Santa Rosa Sonoma County

Tue 10/14

9:43 am-11:59 pm

2 stops12h 16m

Chicago O'Hare Intl

Wed 10/22

3:50 pm-11:16 pm

1 stop9h 26m

$272

Santa RosaChicago

STS - ORD

STSORD

Santa Rosa Sonoma County

Mon 9/8

7:03 am-10:43 pm

1 stop13h 40m

Chicago O'Hare Intl

Thu 9/11

6:30 am-11:59 pm

1 stop19h 29m

$284

Santa RosaChicago

STS - ORD

STSORD

Santa Rosa Sonoma County

Wed 10/8

6:25 am-11:59 pm

1 stop15h 34m

Chicago O'Hare Intl

Wed 10/22

3:50 pm-11:16 pm

1 stop9h 26m

$287

Santa RosaChicago

STS - ORD

STSORD

Santa Rosa Sonoma County

Sat 10/4

6:30 am-11:59 pm

1 stop15h 29m

Chicago O'Hare Intl

Sat 10/11

3:50 pm-11:16 pm

1 stop9h 26m

$287

Santa RosaChicago

STS - ORD

STSORD

Santa Rosa Sonoma County

Sat 10/11

6:25 am-11:59 pm

1 stop15h 34m

Chicago O'Hare Intl

Wed 10/22

3:50 pm-11:16 pm

1 stop9h 26m

$287

Santa RosaChicago

STS - ORD

STSORD

Santa Rosa Sonoma County

Wed 10/8

6:25 am-11:59 pm

1 stop15h 34m

Chicago O'Hare Intl

Tue 10/28

9:20 am-2:24 pm

1 stop7h 04m

$287

Santa RosaChicago

STS - ORD

STSORD

Santa Rosa Sonoma County

Tue 10/21

6:25 am-11:59 pm

1 stop15h 34m

$158

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/12

Showing 1-10 of 17 results
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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, August is the cheapest month in which you can book a flight from Santa Rosa to Chicago O'Hare Intl Airport (average of $245). Flying from Santa Rosa to Chicago O'Hare Intl Airport in March is currently the most expensive (average of $321). 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 August 14, 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 afternoon.

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 August 14, 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
10,000 reviews

Overall

8.0

Entertainment

7.0

Comfort

7.8

Boarding

8.1

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Entertainment

7.0

Comfort

7.8

Boarding

8.1

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Entertainment

7.0

Comfort

7.8

Boarding

8.1

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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.

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

    According to our current data, Alaska Airlines ($308), and American Airlines ($318) offers the cheapest pricing from Santa Rosa to Chicago O'Hare Intl Airport. These flights start at 43% 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, August is the cheapest month in which you can book a flight from Santa Rosa to Chicago O'Hare Intl Airport (average of $245). Flying from Santa Rosa to Chicago O'Hare Intl Airport in March is currently the most expensive (average of $321). 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
Beloit
Hoffman Estates
Skokie
Des Plaines
Elgin
Gurnee
Arlington Heights
Racine
Rockford
Great Lakes
Orland Park
Merrillville
Naperville
Waukegan
Elk Grove Village
Downers Grove
Tinley Park
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 August 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$308Average$582FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$318Average$578FlexibilityNo cancel feeOn-time71%

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