HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news

Cheap flights from Santa Rosa (STS) to Illinois from $211

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 6/13. 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
Jun 7 — Jun 141
From?
To?
Fri 6/7
Fri 6/14
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

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 $308, or $448 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 $320 per person but you can even find prices for as low as $88. The most expensive prices can be found in the month of March. Opting for a October flight can save you 18% on your journey compared to booking in March

What is the cheapest time of day to fly from STS to 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 2,807,690 searches. Data last updated June 2, 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.
Mon 7/17:01 pmSTS - ORD
1 stop8h 14mAlaska Airlines
Wed 7/109:22 pmORD - STS
1 stop26h 34mAlaska Airlines
Deal found 6/2$431
Mon 7/17:01 pmSTS - ORD
1 stop8h 14mAlaska Airlines
Wed 7/109:22 pmORD - STS
2 stops15h 19mAlaska Airlines
Deal found 6/2$436
Mon 7/12:44 pmSTS - ORD
2 stops12h 31mAlaska Airlines
Wed 7/109:22 pmORD - STS
2 stops15h 19mAlaska Airlines
Deal found 6/2$524
Mon 7/12:44 pmSTS - ORD
1 stop11h 56mAlaska Airlines
Sat 7/66:00 amORD - STS
1 stop9h 50mAlaska Airlines
Deal found 6/1$1,252
Mon 7/12:44 pmSTS - ORD
1 stop11h 56mAlaska Airlines
Sat 7/66:00 amORD - STS
2 stops14h 21mAlaska Airlines
Deal found 6/1$1,257

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 2,807,690 searches. Data last updated June 2, 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.
Mon 7/14:15 pmSTS - ORD
1 stop6h 03mAmerican Airlines
Sat 7/66:00 amORD - STS
1 stop7h 48mAmerican Airlines
Deal found 6/1$528
Mon 7/14:15 pmSTS - ORD
2 stops10h 45mAmerican Airlines
Sat 7/67:00 amORD - STS
2 stops10h 43mAmerican Airlines
Deal found 6/1$1,492

Cheap Santa Rosa to Illinois flights in June & July 2024

Find cheap flight options from Santa Rosa to Illinois specifically for the months of June and July 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,807,690 searches. Prices were last updated on June 2, 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.
Sun 6/3011:05 amSTS - ORD
1 stop17h 19mMultiple Airlines
Sun 7/78:05 pmORD - STS
3 stops26h 50mMultiple Airlines
Deal found 6/1$428
Sun 6/3011:05 amSTS - ORD
1 stop17h 19mMultiple Airlines
Sun 7/78:05 pmORD - STS
2 stops23h 50mMultiple Airlines
Deal found 6/1$430
Sun 6/3011:05 amSTS - ORD
2 stops24h 35mMultiple Airlines
Sun 7/78:05 pmORD - STS
3 stops26h 50mMultiple Airlines
Deal found 6/1$443
Sun 6/3011:05 amSTS - ORD
3 stops30h 38mMultiple Airlines
Sun 7/78:05 pmORD - STS
3 stops26h 50mMultiple Airlines
Deal found 6/1$459
Sun 6/3011:05 amSTS - ORD
1 stop17h 19mMultiple Airlines
Sun 7/79:36 amORD - STS
1 stop13h 44mMultiple Airlines
Deal found 6/1$496

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 2,807,690 searches. Data last updated June 2, 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.
Thu 7/116:30 amSTS - ORD
2 stops10h 40mMultiple Airlines
Sun 7/146:19 pmORD - STS
2 stops28h 36mMultiple Airlines
Deal found 6/2$325
Thu 7/116:30 amSTS - ORD
1 stop13h 49mMultiple Airlines
Sun 7/148:05 pmORD - STS
2 stops23h 50mMultiple Airlines
Deal found 6/1$334
Thu 7/116:30 amSTS - ORD
1 stop8h 59mMultiple Airlines
Sun 7/146:19 pmORD - STS
2 stops28h 36mMultiple Airlines
Deal found 6/2$337
Thu 7/1112:20 pmSTS - ORD
2 stops15h 46mMultiple Airlines
Sun 7/148:05 pmORD - STS
2 stops23h 50mMultiple Airlines
Deal found 6/1$342
Thu 7/116:30 amSTS - ORD
3 stops21h 36mMultiple Airlines
Sun 7/144:27 pmORD - STS
2 stops27h 28mMultiple Airlines
Deal found 6/1$392
Thu 7/112:50 pmSTS - ORD
3 stops13h 38mMultiple Airlines
Sun 7/146:19 pmORD - STS
2 stops28h 36mMultiple Airlines
Deal found 6/2$403
Thu 7/116:30 amSTS - ORD
1 stop8h 59mMultiple Airlines
Sun 7/141:28 pmORD - STS
1 stop9h 52mMultiple Airlines
Deal found 6/1$420
Sun 6/3011:05 amSTS - ORD
1 stop17h 19mMultiple Airlines
Sun 7/78:05 pmORD - STS
3 stops26h 50mMultiple Airlines
Deal found 6/1$428
Sun 6/3011:05 amSTS - ORD
1 stop17h 19mMultiple Airlines
Sun 7/78:05 pmORD - STS
2 stops23h 50mMultiple Airlines
Deal found 6/1$430

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 2,807,690 searches. Data last updated June 2, 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.
Thu 6/135:25 pmSTS - STL
2 stops18h 51mMultiple Airlines
Deal found 6/1$211
Thu 6/135:25 pmSTS - STL
3 stops17h 16mMultiple Airlines
Deal found 6/1$234
Fri 6/287:03 pmSTS - ORD
1 stop8h 12mAlaska Airlines
Deal found 6/2$297
Sat 6/153:54 pmSTS - STL
2 stops19h 26mAlaska Airlines
Deal found 5/31$303
Sat 6/154:14 pmSTS - STL
1 stop5h 36mAmerican Airlines
Deal found 5/31$339
Fri 6/284:14 pmSTS - ORD
2 stops13h 03mAmerican Airlines
Deal found 6/1$369
Thu 6/1312:33 pmSTS - STL
1 stop8h 24mAmerican Airlines
Deal found 6/1$414

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 2,807,690 searches. Data last updated June 2, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$334 - $528

Route

Depart

Return

Price

Santa Rosa Sonoma CountyChicago O'Hare Intl

STS - ORD

STSORD

Santa Rosa Sonoma County

Thu 7/11

1 stop13h 49m

Chicago O'Hare Intl

Sun 7/14

2 stops23h 50m

$334

Santa Rosa Sonoma CountyChicago O'Hare Intl

STS - ORD

STSORD

Santa Rosa Sonoma County

Thu 7/11

2 stops15h 46m

Chicago O'Hare Intl

Sun 7/14

2 stops23h 50m

$342

Santa Rosa Sonoma CountyChicago O'Hare Intl

STS - ORD

STSORD

Santa Rosa Sonoma County

Thu 7/11

3 stops21h 36m

Chicago O'Hare Intl

Sun 7/14

2 stops27h 28m

$392

Santa Rosa Sonoma CountyChicago O'Hare Intl

STS - ORD

STSORD

Santa Rosa Sonoma County

Thu 7/11

1 stop8h 59m

Chicago O'Hare Intl

Sun 7/14

1 stop9h 52m

$420

Santa Rosa Sonoma CountyChicago O'Hare Intl

STS - ORD

STSORD

Santa Rosa Sonoma County

Sun 6/30

1 stop17h 19m

Chicago O'Hare Intl

Sun 7/7

3 stops26h 50m

$428

Santa Rosa Sonoma CountyChicago O'Hare Intl

STS - ORD

STSORD

Santa Rosa Sonoma County

Mon 7/1

1 stop8h 14m

Chicago O'Hare Intl

Wed 7/10

1 stop26h 34m

$431

Santa Rosa Sonoma CountyChicago O'Hare Intl

STS - ORD

STSORD

Santa Rosa Sonoma County

Mon 7/1

1 stop8h 14m

Chicago O'Hare Intl

Wed 7/10

2 stops15h 19m

$436

Santa Rosa Sonoma CountyChicago O'Hare Intl

STS - ORD

STSORD

Santa Rosa Sonoma County

Mon 7/1

2 stops12h 31m

Chicago O'Hare Intl

Wed 7/10

2 stops15h 19m

$524

Santa Rosa Sonoma CountyChicago O'Hare Intl

STS - ORD

STSORD

Santa Rosa Sonoma County

Mon 7/1

1 stop6h 03m

Chicago O'Hare Intl

Sat 7/6

1 stop7h 48m

$528

Flights are sorted by cheapest first

Deals found on 6/1

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

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.

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 June 2, 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
8.1
Very good
9,197 reviews
Check prices

Comfort

7.9

Crew

8.6

Entertainment

7.3

Boarding

8.2

Overall

8.1

Food

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
9,197 reviews
Alaska Airlines
8.1
Very good
9,197 reviews
Check prices

Comfort

7.9

Crew

8.6

Entertainment

7.3

Boarding

8.2

Overall

8.1

Food

7.3

Reviews

1 / 10

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

American Airlines
7.3
Good
14,260 reviews
Alaska Airlines
8.1
Very good
9,197 reviews
Check prices

Comfort

7.9

Crew

8.6

Entertainment

7.3

Boarding

8.2

Overall

8.1

Food

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 Multiple Airlines for just $334, but on average you can expect to pay $536.

  • 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 - Moline Quad-City or Santa Rosa Sonoma County - Lambert-St Louis 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 6/2.

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

    Currently, February is the cheapest month in which you can book a flight from Santa Rosa to Illinois (average of $244). Flying from Santa Rosa to Illinois in June is currently the most expensive (average of $326). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Santa Rosa to Illinois
See prices for flight routes from nearby airports that may be better suited for you.

Los Angeles to Newark flights
Los Angeles to John F Kennedy Intl flights
San Francisco to John F Kennedy Intl flights
Los Angeles to Seattle flights
Los Angeles to Honolulu flights
Los Angeles to LaGuardia flights
San Francisco to Newark flights
Los Angeles to Dallas/Fort Worth flights
Los Angeles to Las Vegas flights
Los Angeles to O'Hare Intl flights
Santa Ana to Seattle flights
Los Angeles to Miami flights
Los Angeles to Boston flights
Ontario to Seattle flights
San Francisco to Seattle flights
Los Angeles to Orlando flights
San Francisco to O'Hare Intl flights
San Francisco to Las Vegas flights
San Francisco to Los Angeles flights
Ontario to John F Kennedy Intl flights
San Francisco to LaGuardia flights
Burbank to Newark flights
Los Angeles to San Francisco flights
Oakland to Newark flights
Los Angeles to Portland flights
Burbank to Seattle flights
San Francisco to Boston flights
San Francisco to Dallas/Fort Worth flights
Santa Ana to Las Vegas flights
Los Angeles to Reagan-National flights
San Jose to Seattle flights
Oakland to Los Angeles flights
Los Angeles to Fort Lauderdale flights
San Francisco to Honolulu flights
Los Angeles to Atlanta flights
Ontario to Dallas/Fort Worth flights
Oakland to Las Vegas flights
San Jose to Los Angeles flights
Burbank to Las Vegas flights
Burbank to LaGuardia flights
Los Angeles to Hobby flights
Los Angeles to Oakland flights
San Diego to Seattle flights
Ontario to Honolulu flights
Los Angeles to Kahului flights
Ontario to LaGuardia flights
San Francisco to Ontario flights
Los Angeles to Baltimore flights
Los Angeles to Midway flights
Los Angeles to George Bush Intcntl flights

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 2,807,690 searches. Data last updated June 2, 2024.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$376Average$622FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
Boston to Hawaii flights
Austin to Houston flights
Omaha to Denver flights
Boston to Phoenix flights
Phoenix to Houston flights
Austin to Dallas flights
Washington, D.C. to New York flights
Las Vegas to Houston flights
Los Angeles to Dallas flights
Miami to New York flights
Washington, D.C. to London flights
Santa Rosa to Indiana flights

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

Book a flight to one of these trending destinations

User searches for flights to these destinations increased 20% or more in the past 90 days compared to other destinations
Flights to Gaziantep
Flights to Miyakojima Hirara
Flights to Figari-Sud Corse
Flights to Mason City
Flights to Komatsu
Flights to Sendai
Flights to Rhinelander Oneida County
Flights to Constanţa Mihail Kogalniceanu
Flights to Brainerd Crow Wing County
Flights to Reus
Flights to Virac
Flights to Neiva La Marguita
Flights to Pellston Emmet County
Flights to Urumqi
Flights to Bastia Poretta
Flights to Samos
Flights to Hyannis Barnstable
Flights to Provincetown
Flights to Alghero-Fertilia
Flights to Laayoune Hassan I
Flights to Devils Lake
Flights to Vava'u Lupepau'U
Flights to Hakodate
Flights to Edremit/Korfez

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.

100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
View all available airlines