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Cheap flights from Santa Rosa (STS) to Illinois from $359

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 5/17. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
STS — ORD
May 13 — May 201
From?
To?
Mon 5/13
Mon 5/20
1 adult, Economy
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How far in advance should I book a flight from Santa Rosa to Illinois?

Travelers have found it’s best to book a flight 47 days in advance to save up to 40% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 47 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from Santa Rosa to Illinois 1-2 weeks in advance for as low as $324, or $474 for flights within the next 24 hours.

What is the cheapest month to fly from Santa Rosa to Illinois?

October is one of the best times of the year to fly to Illinois from Santa Rosa. Prices for October average $321 per person but you can even find prices for as low as $88. The most expensive prices can be found in the month of June. Opting for a October flight can save you 22% on your journey compared to booking in June

When is the cheapest time to fly from Santa Rosa to Illinois (STS - IL)?

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.

Cheap Alaska Airlines flights from Santa Rosa to Illinois

Explore cheap flight options specifically provided by Alaska Airlines for the route between Santa Rosa and Illinois. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,752,338 searches. Data last updated May 8, 2024.
Check out some of the cheapest Alaska Airlines flights we've come across from Santa Rosa to Illinois. It's recommended that users confirm their flight details before booking.
Fri 5/317:28 pmSTS - ORD
1 stop7h 12mAlaska Airlines
Tue 6/49:20 pmORD - STS
2 stops15h 56mAlaska Airlines
Deal found 5/8$389
Fri 5/317:28 pmSTS - ORD
1 stop7h 12mAlaska Airlines
Tue 6/49:20 pmORD - STS
1 stop18h 04mAlaska Airlines
Deal found 5/8$414
Thu 5/307:28 pmSTS - ORD
1 stop7h 12mAlaska Airlines
Fri 5/319:20 pmORD - STS
2 stops19h 19mAlaska Airlines
Deal found 5/7$419
Thu 5/307:28 pmSTS - ORD
1 stop7h 12mAlaska Airlines
Fri 5/319:20 pmORD - STS
1 stop18h 04mAlaska Airlines
Deal found 5/7$444
Sat 5/257:28 pmSTS - ORD
1 stop16h 26mAlaska Airlines
Wed 5/298:00 amORD - STS
2 stops16h 34mAlaska Airlines
Deal found 5/7$459
Tue 8/272:36 pmSTS - ORD
1 stop7h 01mAlaska Airlines
Wed 9/49:07 pmORD - STS
1 stop18h 39mAlaska Airlines
Deal found 5/7$461
Sat 5/257:28 pmSTS - ORD
2 stops19h 26mAlaska Airlines
Wed 5/292:54 pmORD - STS
2 stops9h 40mAlaska Airlines
Deal found 5/7$464
Tue 8/2010:58 amSTS - STL
2 stops11h 01mAlaska Airlines
Sat 8/242:34 pmSTL - STS
1 stop9h 33mAlaska Airlines
Deal found 5/6$482
Thu 6/202:44 pmSTS - ORD
1 stop11h 56mAlaska Airlines
Sat 6/228:00 amORD - STS
1 stop12h 16mAlaska Airlines
Deal found 5/8$483

Cheap American Airlines flights from Santa Rosa to Illinois

Explore cheap flight options specifically provided by American Airlines for the route between Santa Rosa and Illinois. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,752,338 searches. Data last updated May 8, 2024.
Some of the lowest-priced American Airlines flights we've found at this time heading from Santa Rosa to Illinois. Make sure to examine the flight information before completing your reservation.
Tue 8/1312:27 pmSTS - ORD
1 stop9h 07mAmerican Airlines
Sat 8/176:00 amORD - STS
1 stop7h 47mAmerican Airlines
Deal found 5/7$488
Tue 8/1312:27 pmSTS - ORD
1 stop9h 07mAmerican Airlines
Sat 8/177:25 amORD - STS
2 stops10h 20mAmerican Airlines
Deal found 5/7$491
Tue 8/274:15 pmSTS - ORD
2 stops14h 33mAmerican Airlines
Wed 9/45:30 amORD - STS
2 stops12h 12mAmerican Airlines
Deal found 5/7$529
Wed 8/2812:27 pmSTS - ORD
1 stop9h 07mAmerican Airlines
Sun 9/111:34 amORD - STS
1 stop6h 11mAmerican Airlines
Deal found 5/8$548
Wed 8/2812:27 pmSTS - ORD
1 stop9h 07mAmerican Airlines
Sun 9/17:25 amORD - STS
2 stops10h 20mAmerican Airlines
Deal found 5/8$551
Wed 6/1212:33 pmSTS - ORD
1 stop6h 52mAmerican Airlines
Sun 6/165:00 amORD - STS
1 stop8h 53mAmerican Airlines
Deal found 5/8$558
Wed 6/1212:33 pmSTS - ORD
1 stop6h 52mAmerican Airlines
Sun 6/166:02 amORD - STS
2 stops11h 42mAmerican Airlines
Deal found 5/8$563
Thu 7/44:14 pmSTS - ORD
2 stops14h 37mAmerican Airlines
Mon 7/87:00 amORD - STS
2 stops10h 41mAmerican Airlines
Deal found 5/8$606
Fri 6/284:14 pmSTS - ORD
1 stop6h 04mAmerican Airlines
Mon 7/15:00 amORD - STS
1 stop8h 53mAmerican Airlines
Deal found 5/7$608

Cheap Santa Rosa to Illinois flights in May & June 2024

Find cheap flight options from Santa Rosa to Illinois specifically for the months of May and June 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,752,338 searches. Prices were last updated on May 8, 2024.
Listed are some of the best fares we've found on flights departing from Santa Rosa to Illinois in 2024. More deals are always being added, so be sure to check back regularly.
Fri 5/317:28 pmSTS - ORD
1 stop7h 12mAlaska Airlines
Tue 6/49:20 pmORD - STS
2 stops15h 56mAlaska Airlines
Deal found 5/8$389
Fri 5/317:28 pmSTS - ORD
1 stop7h 12mAlaska Airlines
Tue 6/49:20 pmORD - STS
1 stop18h 04mAlaska Airlines
Deal found 5/8$414
Thu 5/307:28 pmSTS - ORD
1 stop7h 12mAlaska Airlines
Fri 5/319:20 pmORD - STS
2 stops19h 19mAlaska Airlines
Deal found 5/7$419
Fri 6/2810:55 amSTS - ORD
2 stops17h 29mMultiple Airlines
Mon 7/19:54 amORD - STS
1 stop10h 01mMultiple Airlines
Deal found 5/7$429
Thu 5/307:28 pmSTS - ORD
1 stop7h 12mAlaska Airlines
Fri 5/319:20 pmORD - STS
1 stop18h 04mAlaska Airlines
Deal found 5/7$444
Sat 5/257:28 pmSTS - ORD
1 stop16h 26mAlaska Airlines
Wed 5/298:00 amORD - STS
2 stops16h 34mAlaska Airlines
Deal found 5/7$459
Sat 5/257:28 pmSTS - ORD
2 stops19h 26mAlaska Airlines
Wed 5/292:54 pmORD - STS
2 stops9h 40mAlaska Airlines
Deal found 5/7$464
Thu 5/302:18 pmSTS - ORD
2 stops12h 22mAlaska Airlines
Fri 5/319:20 pmORD - STS
2 stops19h 19mAlaska Airlines
Deal found 5/7$474
Thu 6/202:44 pmSTS - ORD
1 stop11h 56mAlaska Airlines
Sat 6/228:00 amORD - STS
1 stop12h 16mAlaska Airlines
Deal found 5/8$483

Santa Rosa to Illinois 2024 flight deals

Discover exclusive flight deals for travel between Santa Rosa and Illinois in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,752,338 searches. Data last updated May 8, 2024.
Listed are some of the best fares we've found on flights departing from Santa Rosa to Illinois in 2024. More deals are always being added, so be sure to check back regularly.
Fri 5/317:28 pmSTS - ORD
1 stop7h 12mAlaska Airlines
Tue 6/49:20 pmORD - STS
2 stops15h 56mAlaska Airlines
Deal found 5/8$389
Fri 5/317:28 pmSTS - ORD
1 stop7h 12mAlaska Airlines
Tue 6/49:20 pmORD - STS
1 stop18h 04mAlaska Airlines
Deal found 5/8$414
Thu 5/307:28 pmSTS - ORD
1 stop7h 12mAlaska Airlines
Fri 5/319:20 pmORD - STS
2 stops19h 19mAlaska Airlines
Deal found 5/7$419
Fri 6/2810:55 amSTS - ORD
2 stops17h 29mMultiple Airlines
Mon 7/19:54 amORD - STS
1 stop10h 01mMultiple Airlines
Deal found 5/7$429
Thu 5/307:28 pmSTS - ORD
1 stop7h 12mAlaska Airlines
Fri 5/319:20 pmORD - STS
1 stop18h 04mAlaska Airlines
Deal found 5/7$444
Sat 5/257:28 pmSTS - ORD
1 stop16h 26mAlaska Airlines
Wed 5/298:00 amORD - STS
2 stops16h 34mAlaska Airlines
Deal found 5/7$459
Tue 8/272:36 pmSTS - ORD
1 stop7h 01mAlaska Airlines
Wed 9/49:07 pmORD - STS
1 stop18h 39mAlaska Airlines
Deal found 5/7$461
Sat 5/257:28 pmSTS - ORD
2 stops19h 26mAlaska Airlines
Wed 5/292:54 pmORD - STS
2 stops9h 40mAlaska Airlines
Deal found 5/7$464
Thu 5/302:18 pmSTS - ORD
2 stops12h 22mAlaska Airlines
Fri 5/319:20 pmORD - STS
2 stops19h 19mAlaska Airlines
Deal found 5/7$474

One-way flights to Illinois from Santa Rosa

Search for one-way flight options from Santa Rosa to Illinois. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 2,752,338 searches. Data last updated May 8, 2024.
Some of the best available deals we've found on one-way flights from Santa Rosa to Illinois. Users in need of a round-trip flight from Santa Rosa to Illinois instead should update the search form at the top of page.
Fri 5/177:28 pmSTS - STL
2 stops16h 08mAlaska Airlines
Deal found 5/8$359
Fri 7/197:03 pmSTS - STL
2 stops12h 26mAlaska Airlines
Deal found 5/7$364
Fri 7/1912:28 pmSTS - STL
1 stop6h 19mAmerican Airlines
Deal found 5/7$374
Fri 5/174:20 pmSTS - STL
1 stop5h 36mAmerican Airlines
Deal found 5/8$419
Fri 5/177:45 amSTS - STL
3 stops26h 20mMultiple Airlines
Deal found 5/8$424

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 2,752,338 searches. Data last updated May 8, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$389 - $574

Route

Depart

Return

Price

Santa Rosa Sonoma CountyChicago O'Hare Intl

STS - ORD

STSORD

Santa Rosa Sonoma County

Fri 5/31

1 stop7h 12m

Chicago O'Hare Intl

Tue 6/4

2 stops15h 56m

$389

Santa Rosa Sonoma CountyChicago O'Hare Intl

STS - ORD

STSORD

Santa Rosa Sonoma County

Fri 5/31

1 stop7h 12m

Chicago O'Hare Intl

Tue 6/4

1 stop18h 04m

$414

Santa Rosa Sonoma CountyChicago O'Hare Intl

STS - ORD

STSORD

Santa Rosa Sonoma County

Thu 5/30

1 stop7h 12m

Chicago O'Hare Intl

Fri 5/31

2 stops19h 19m

$419

Santa Rosa Sonoma CountyChicago O'Hare Intl

STS - ORD

STSORD

Santa Rosa Sonoma County

Fri 6/28

2 stops17h 29m

Chicago O'Hare Intl

Mon 7/1

1 stop10h 01m

$429

Santa Rosa Sonoma CountyChicago O'Hare Intl

STS - ORD

STSORD

Santa Rosa Sonoma County

Sun 5/19

2 stops21h 40m

Chicago O'Hare Intl

Wed 5/22

2 stops30h 15m

$474

Santa Rosa Sonoma CountyChicago O'Hare Intl

STS - ORD

STSORD

Santa Rosa Sonoma County

Fri 6/28

2 stops17h 29m

Chicago O'Hare Intl

Mon 7/1

2 stops13h 02m

$484

Santa Rosa Sonoma CountyChicago O'Hare Intl

STS - ORD

STSORD

Santa Rosa Sonoma County

Tue 8/13

1 stop9h 07m

Chicago O'Hare Intl

Sat 8/17

1 stop7h 47m

$488

Santa Rosa Sonoma CountyChicago O'Hare Intl

STS - ORD

STSORD

Santa Rosa Sonoma County

Tue 8/13

1 stop9h 07m

Chicago O'Hare Intl

Sat 8/17

2 stops10h 20m

$491

Santa Rosa Sonoma CountyChicago O'Hare Intl

STS - ORD

STSORD

Santa Rosa Sonoma County

Tue 10/15

2 stops7h 56m

Chicago O'Hare Intl

Sun 10/20

1 stop12h 54m

$574

Flights are sorted by cheapest first

Deals found on 5/8

No data available for this route at this time. Please check back soon.

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 May 8, 2024.
Read through reviews of airlines operating flights from Santa Rosa to Illinois, such as Alaska Airlines, American Airlines and Undisclosed Carrier. 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
8.1
Very good
9,141 reviews
Check prices

Crew

8.6

Comfort

7.9

Food

7.3

Boarding

8.2

Overall

8.1

Entertainment

7.3

Reviews

1 / 10

Paid a lot for our exit row seats and they weren’t that roomy.

Alaska Airlines
8.1
Very good
9,141 reviews
Alaska Airlines
8.1
Very good
9,141 reviews
Check prices

Crew

8.6

Comfort

7.9

Food

7.3

Boarding

8.2

Overall

8.1

Entertainment

7.3

Reviews

1 / 10

Paid a lot for our exit row seats and they weren’t that roomy.

American Airlines
7.3
Good
14,677 reviews
Alaska Airlines
8.1
Very good
9,141 reviews
Check prices

Crew

8.6

Comfort

7.9

Food

7.3

Boarding

8.2

Overall

8.1

Entertainment

7.3

Reviews

1 / 10

Paid a lot for our exit row seats and they weren’t that roomy.

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 $400 on Cheapflights?

    Yes, there are multiple flights from Santa Rosa to Illinois for under $400. The cheapest flight booked recently is on Alaska Airlines for just $389, but on average you can expect to pay $469.

  • 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), Springfield Capital Airport (SPI) 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 5/8.

See more FAQs

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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 2,752,338 searches. Data last updated May 8, 2024.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$377Average$635FlexibilityNo cancel feeOn-time71%
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Search flights from Santa Rosa to Illinois by cabin class

Find flights from Santa Rosa to Illinois, based on your preferred cabin class, be it economy, premium economy, business, or first class.
First Class
Business Class
Prem Econ Class
Economy Class

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Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Santa Rosa to Illinois?

Deals for Santa Rosa to Illinois flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from Santa Rosa to Illinois?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Santa Rosa to Illinois.

Can Cheapflights find flights from Santa Rosa to Illinois with no change fees?

Yes! Cheapflights helps users easily find flights from Santa Rosa to Illinois with no change fees.

Can Cheapflights notify me if prices for flights from Santa Rosa to Illinois become cheaper?

Of course! You can now track prices for flights from Santa Rosa to Illinois and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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