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$148+ Cheap flights from Santa Rosa (STS) to Illinois

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 12/13. Fares are subject to change and may not be available on all flights or dates of travel.
STS — ORD
Nov 25 — Dec 21
Mon 11/25
Mon 12/2
1 adult, Economy
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Cheap flight deals from Santa Rosa to Illinois

Discover tips and strategies to find the most affordable flight options for your journey from Santa Rosa (STS) to Illinois (USIL). 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 November 20, 2024.

Find flight deals from Santa Rosa to Illinois

Cheapest flights from Santa Rosa to Illinois
Explore the most affordable flight options available from Santa Rosa to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 20, 2024.

This Mytrip deal was found by Cheapflights users on 11/20. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/912:32 pmSTS - ORD
1 stop14h 58mMultiple Airlines
Fri 12/137:35 amORD - STS
2 stops16h 58mMultiple Airlines
Deal found 11/20$223
This Alaska Airlines deal was found by Cheapflights users on 11/19. 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 12/99:44 amSTS - ORD
1 stop25h 18mAlaska Airlines
Thu 12/126:32 amORD - STS
1 stop9h 38mAlaska Airlines
Deal found 11/19$391
This Alaska Airlines deal was found by Cheapflights users on 11/20. 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.
Thu 12/53:02 pmSTS - STL
1 stop6h 57mAlaska Airlines
Mon 12/92:20 pmSTL - STS
1 stop9h 33mAlaska Airlines
Deal found 11/20$594
This American Airlines deal was found by Cheapflights users on 11/19. 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.
Mon 12/3012:53 pmSTS - ORD
1 stop9h 38mAmerican Airlines
Wed 1/17:00 amORD - STS
1 stop7h 23mAmerican Airlines
Deal found 11/19$610
This American Airlines deal was found by Cheapflights users on 11/19. 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.
Thu 12/56:32 amSTS - MLI
2 stops13h 24mAmerican Airlines
Mon 12/95:00 amMLI - STS
2 stops12h 52mAmerican Airlines
Deal found 11/19$1,322
This American Airlines deal was found by Cheapflights users on 11/19. 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 12/2212:53 pmSTS - STL
1 stop9h 13mAmerican Airlines
Wed 12/2511:36 amSTL - STS
2 stops13h 18mAmerican Airlines
Deal found 11/19$1,448

Find flights from Santa Rosa to Illinois within your budget

Customize your flight search to find flights from Santa Rosa to Illinois 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 2,629,791 searches. Data last updated November 20, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

Santa RosaChicago

STS - ORD

STSORD

Santa Rosa Sonoma County

Mon 12/9

12:32 pm-5:30 am

1 stop14h 58m

Chicago O'Hare Intl

Fri 12/13

7:35 am-10:33 pm

2 stops16h 58m

$223

Santa RosaChicago

STS - ORD

STSORD

Santa Rosa Sonoma County

Mon 12/9

9:44 am-1:02 pm

1 stop25h 18m

Chicago O'Hare Intl

Thu 12/12

6:32 am-2:10 pm

1 stop9h 38m

$391

Santa RosaSt. Louis

STS - STL

STSSTL

Santa Rosa Sonoma County

Thu 4/24

7:00 am-11:56 pm

2 stops14h 56m

Lambert-St Louis

Mon 4/28

7:00 am-9:47 am

2 stops28h 47m

$477

Santa RosaChicago

STS - ORD

STSORD

Santa Rosa Sonoma County

Mon 12/30

12:53 pm-12:31 am

1 stop9h 38m

Chicago O'Hare Intl

Wed 1/1

7:00 am-12:23 pm

1 stop7h 23m

$610

Santa RosaMoline

STS - MLI

STSMLI

Santa Rosa Sonoma County

Thu 12/5

6:32 am-9:56 pm

2 stops13h 24m

Moline Quad-City

Mon 12/9

5:00 am-3:52 pm

2 stops12h 52m

$1,322

Santa RosaSt. Louis

STS - STL

STSSTL

Santa Rosa Sonoma County

Sun 12/22

12:53 pm-12:06 am

1 stop9h 13m

Lambert-St Louis

Wed 12/25

11:36 am-10:54 pm

2 stops13h 18m

$1,448

Santa RosaChicago

STS - ORD

STSORD

Santa Rosa Sonoma County

Fri 12/13

8:30 am-5:30 am

2 stops19h 00m

$148

Santa RosaChicago

STS - ORD

STSORD

Santa Rosa Sonoma County

Sat 12/14

4:24 pm-12:40 am

1 stop6h 16m

$153

Santa RosaChicago

STS - ORD

STSORD

Santa Rosa Sonoma County

Sat 12/14

9:44 am-11:47 pm

2 stops12h 03m

$232

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/19

Best time to book a flight from Santa Rosa to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois 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.

Travel insights for flights from Santa Rosa to Illinois

Get recent, data-driven insights about flights from Santa Rosa to Illinois including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from Santa Rosa to Illinois?

Currently, September is the cheapest month in which you can book a flight from Santa Rosa to Illinois (average of $232). Flying from Santa Rosa to Illinois in June is currently the most expensive (average of $308). 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 IL?

Find hourly flight availability from Santa Rosa to Illinois. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 20, 2024.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Santa Rosa to Illinois as you normally would.

Rainfall in Illinois by month

Plan your trip to Illinois by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Illinois ranges from 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Illinois when rainfall is around 1.7 in.

Temperature in Illinois by month

Plan your trip to Illinois by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Illinois, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

Reviews of airlines servicing Illinois

Get insights into the airlines that provide service to Illinois. 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 Illinois. Reviews last updated November 20, 2024.
Read through reviews of airlines operating flights from Santa Rosa to Illinois, such as Alaska Airlines and American Airlines. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,461 reviews

Crew

8.5

Overall

8.0

Food

7.2

Entertainment

7.1

Comfort

7.9

Boarding

8.2

Reviews

1 / 10

Could not watch a movie, asked for help. Could not get extra cookies

Alaska Airlines
8.0
Very good
9,461 reviews
Alaska Airlines
8.0
Very good
9,461 reviews

Crew

8.5

Overall

8.0

Food

7.2

Entertainment

7.1

Comfort

7.9

Boarding

8.2

Reviews

1 / 10

Could not watch a movie, asked for help. Could not get extra cookies

American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
9,461 reviews

Crew

8.5

Overall

8.0

Food

7.2

Entertainment

7.1

Comfort

7.9

Boarding

8.2

Reviews

1 / 10

Could not watch a movie, asked for help. Could not get extra cookies

Related info for your journey

Find useful and relevant information for your journey from Santa Rosa to Illinois. 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 Illinois?

    Most people fly from Santa Rosa Sonoma County (STS) if they book a flight from Santa Rosa to Illinois. Santa Rosa Sonoma County is conveniently located just 7.2 mi from Santa Rosa’s city center.

  • What are the most popular routes from Santa Rosa to Illinois?

    When deciding which route to take from Santa Rosa to Illinois consider Santa Rosa Sonoma County - Chicago O'Hare Intl, Santa Rosa Sonoma County - Lambert-St Louis or Santa Rosa Sonoma County - Moline Quad-City as they are the most popular.

  • Can I find deals for flights from Santa Rosa to Illinois that include hotel bookings?

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

  • How can I find direct flights from Santa Rosa to Illinois?

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

  • Can I find deals for business class flights from Santa Rosa to Illinois?

    Yes. Cheapflights offers flight deals from Santa Rosa to Illinois 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 Illinois?

    Currently, September is the cheapest month in which you can book a flight from Santa Rosa to Illinois (average of $232). Flying from Santa Rosa to Illinois in June is currently the most expensive (average of $308). 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

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Alternative routes for Santa Rosa to Illinois

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Top airline flying from Santa Rosa to Illinois

Discover the top airline that operate flights from Santa Rosa to Illinois. 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 2,629,791 searches. Data last updated November 20, 2024.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$318Average$642FlexibilityNo cancel feeOn-time71%
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