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$177+ 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 12/25. Fares are subject to change and may not be available on all flights or dates of travel.
STS — ORD
Nov 5 — Nov 121
1 adult
Tue 11/5
Tue 11/12
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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 October 31, 2024.

This Mytrip deal was found by Cheapflights users on 10/30. 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.
Thu 11/1411:24 amSTS - ORD
1 stop15h 21mMultiple Airlines
Mon 11/181:09 pmORD - STS
1 stop11h 16mMultiple Airlines
Deal found 10/30$244
This Alaska Airlines deal was found by Cheapflights users on 10/31. 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 12/97:00 amSTS - ORD
1 stop20h 19mAlaska Airlines
Thu 12/125:34 pmORD - STS
1 stop22h 36mAlaska Airlines
Deal found 10/31$322
This American Airlines deal was found by Cheapflights users on 10/30. 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.
Fri 12/64:24 pmSTS - ORD
1 stop6h 21mAmerican Airlines
Sun 12/86:00 amORD - STS
1 stop8h 25mAmerican Airlines
Deal found 10/30$366
This American Airlines deal was found by Cheapflights users on 10/30. 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.
Wed 11/271:21 pmSTS - STL
1 stop7h 17mAmerican Airlines
Mon 12/27:30 amSTL - STS
2 stops10h 22mAmerican Airlines
Deal found 10/30$903
This Alaska Airlines deal was found by Cheapflights users on 10/30. 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 11/274:11 pmSTS - STL
2 stops19h 16mAlaska Airlines
Mon 12/27:00 amSTL - STS
2 stops17h 30mAlaska Airlines
Deal found 10/30$993

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 2,570,725 searches. Data last updated October 31, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

Santa RosaSt. Louis

STS - STL

STSSTL

Santa Rosa Sonoma County

Wed 12/25

10:12 am-11:59 pm

2 stops11h 47m

$177

Santa RosaSt. Louis

STS - STL

STSSTL

Santa Rosa Sonoma County

Thu 12/5

12:55 pm-11:54 pm

1 stop8h 59m

$183

Santa RosaSt. Louis

STS - STL

STSSTL

Santa Rosa Sonoma County

Thu 12/5

11:24 am-7:55 pm

3 stops30h 31m

$257

Santa RosaChicago

STS - ORD

STSORD

Santa Rosa Sonoma County

Wed 11/6

12:41 pm-8:53 pm

1 stop6h 12m

$434

Santa RosaChicago

STS - ORD

STSORD

Santa Rosa Sonoma County

Wed 11/6

1:13 pm-5:28 am

2 stops14h 15m

$442

Santa RosaMoline

STS - MLI

STSMLI

Santa Rosa Sonoma County

Mon 12/30

6:39 am-10:58 pm

2 stops14h 19m

$1,034

Santa RosaChicago

STS - ORD

STSORD

Santa Rosa Sonoma County

Thu 11/14

11:24 am-4:45 am

1 stop15h 21m

Chicago O'Hare Intl

Mon 11/18

1:09 pm-10:25 pm

1 stop11h 16m

$244

Santa RosaChicago

STS - ORD

STSORD

Santa Rosa Sonoma County

Mon 12/9

7:00 am-5:19 am

1 stop20h 19m

Chicago O'Hare Intl

Thu 12/12

5:34 pm-2:10 pm

1 stop22h 36m

$322

Santa RosaChicago

STS - ORD

STSORD

Santa Rosa Sonoma County

Fri 12/6

4:24 pm-12:45 am

1 stop6h 21m

Chicago O'Hare Intl

Sun 12/8

6:00 am-12:25 pm

1 stop8h 25m

$366

Santa RosaSt. Louis

STS - STL

STSSTL

Santa Rosa Sonoma County

Wed 11/27

1:21 pm-10:38 pm

1 stop7h 17m

Lambert-St Louis

Mon 12/2

7:30 am-3:52 pm

2 stops10h 22m

$903

Flights are sorted by cheapest first

Deals found on 10/30

Showing 1-10 of 11 results
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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 October 31, 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 October 31, 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
9,420 reviews

Overall

8.0

Food

7.2

Comfort

7.9

Boarding

8.2

Entertainment

7.1

Crew

8.6

Reviews

1 / 10

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

Alaska Airlines
8.0
Very good
9,420 reviews
Alaska Airlines
8.0
Very good
9,420 reviews

Overall

8.0

Food

7.2

Comfort

7.9

Boarding

8.2

Entertainment

7.1

Crew

8.6

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
9,420 reviews

Overall

8.0

Food

7.2

Comfort

7.9

Boarding

8.2

Entertainment

7.1

Crew

8.6

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.

  • Can I find flights from Santa Rosa to Illinois for under $300 on Cheapflights?

    Yes, there are multiple flights from Santa Rosa to Illinois for under $300. The cheapest flight booked recently is on Multiple Airlines for just $244, but on average you can expect to pay $363.

  • 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.

  • What does STS to ORD mean?

    Great question - STS to ORD just means Santa Rosa Sonoma County Airport to Chicago O'Hare Intl Airport. Now you’ll know what these unique codes when you look for flights! Chicago Midway Airport (MDW), Moline Quad-City Airport (MLI), Greater Peoria Airport (PIA), Bloomington-Normal Airport (BMI), Champaign University-Willard Airport (CMI) are other airports near this flight route and their unique identifiers/IATA codes.

  • Can I find deals for flights from Santa Rosa to Illinois that include extra baggage allowance?

    The amount of baggage you can bring on your Santa Rosa to Illinois flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from Santa Rosa to Illinois with specific airlines?

    Yes, Cheapflights allows you to browse and filter Santa Rosa to Illinois flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • 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.

  • Can I find deals for flights from Santa Rosa to Illinois that allow pets onboard?

    Many airlines flying from Santa Rosa to Illinois offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from Santa Rosa to Illinois?

    Yes, you can often find last-minute deals on Santa Rosa to Illinois flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the Santa Rosa to Illinois flight deals updated?

    The Santa Rosa to Illinois flight deals you see on this page were last updated on 10/31.

  • 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.

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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 2,570,725 searches. Data last updated October 31, 2024.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$318Average$648FlexibilityNo cancel feeOn-time71%
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