When did momondo last update prices for flights from Santa Rosa Sonoma County Airport to Illinois?

Prices for flights from Santa Rosa Sonoma County Airport to Illinois are refreshed on a daily basis.

How many operators does momondo search for flights from Santa Rosa Sonoma County Airport to Illinois?

There is 1 operator available for flights from Santa Rosa Sonoma County Airport to Illinois as of April 2026.

How old do you have to be to fly from Santa Rosa Sonoma County Airport to Illinois?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Santa Rosa Sonoma County Airport to Illinois.

What documentation or ID do you need to fly to Illinois?

The travel and health documents required for your trip to Illinois can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Illinois. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$152 Cheap Flights from Santa Rosa to Illinois in 2026

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Find the cheapest flights from Santa Rosa to Illinois

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

7:06 am - 6:50 pm

STS

ORD

9h 44m

1 stop

9:00 am - 2:13 pm

ORD

STS

7h 13m

1 stop

$303Alaska Airlines

Sat, May 23 - Wed, May 27

7:01 am - 6:50 pm

STS

ORD

9h 49m

1 stop

9:00 am - 11:28 pm

ORD

STS

16h 28m

1 stop

$338Alaska Airlines

Tue, May 19 - Sat, May 23

1:13 pm - 11:59 pm

STS

ORD

8h 46m

1 stop

6:00 am - 12:21 pm

ORD

STS

8h 21m

1 stop

$344Alaska Airlines

Wed, Apr 22 - Sat, Apr 25

7:06 am - 11:55 pm

STS

ORD

14h 49m

1 stop

9:00 am - 11:56 pm

ORD

STS

16h 56m

1 stop

$345Alaska Airlines

Sat, Jun 6 - Tue, Jun 9

7:23 am - 7:03 pm

STS

ORD

9h 40m

1 stop

3:52 pm - 11:27 pm

ORD

STS

9h 35m

1 stop

$346Alaska Airlines

Tue, May 5 - Mon, May 11

11:00 am - 9:10 pm

STS

STL

8h 10m

1 stop

9:10 am - 3:55 pm

STL

STS

8h 45m

1 stop

$477Southwest

Mon, Jun 1 - Wed, Jun 3

11:00 am - 9:10 pm

STS

STL

8h 10m

1 stop

2:30 pm - 10:10 pm

STL

STS

9h 40m

2 stops

$482Southwest

Mon, Jun 1 - Wed, Jun 3

12:15 pm - 12:35 am

STS

STL

10h 20m

1 stop

5:40 am - 9:35 am

STL

STS

5h 55m

1 stop

$524Southwest

Sat, Jun 13 - Sat, Jun 20

1:03 pm - 11:58 pm

STS

STL

8h 55m

1 stop

5:25 am - 12:03 pm

STL

STS

8h 38m

1 stop

$534American Airlines

Thu, May 28 - Sun, May 31

12:56 pm - 11:29 pm

STS

MLI

8h 33m

2 stops

7:25 am - 3:53 pm

MLI

STS

10h 28m

2 stops

$2,052American Airlines

Fri, May 1 - Thu, May 7

Alaska Airlines flights from Santa Rosa to Illinois

Our best Alaska Airlines deals on Santa Rosa to Illinois flight tickets

Alaska Airlines

May 23

STS7:06 amSanta Rosa Sonoma County

9h 44m

1 stop

ORD6:50 pmChicago O'Hare Intl

May 27

ORD9:00 amChicago O'Hare Intl

7h 13m

1 stop

STS2:13 pmSanta Rosa Sonoma County

$303

Alaska Airlines

May 19

STS7:01 amSanta Rosa Sonoma County

9h 49m

1 stop

ORD6:50 pmChicago O'Hare Intl

May 23

ORD9:00 amChicago O'Hare Intl

16h 28m

1 stop

STS11:28 pmSanta Rosa Sonoma County

$338

Alaska Airlines

May 5

STS7:23 amSanta Rosa Sonoma County

9h 40m

1 stop

ORD7:03 pmChicago O'Hare Intl

May 11

ORD3:52 pmChicago O'Hare Intl

9h 35m

1 stop

STS11:27 pmSanta Rosa Sonoma County

$346

American Airlines flights from Santa Rosa to Illinois

Our best American Airlines deals on Santa Rosa to Illinois flight tickets

American Airlines

May 28

STS1:03 pmSanta Rosa Sonoma County

8h 55m

1 stop

STL11:58 pmLambert-St Louis

May 31

STL5:25 amLambert-St Louis

8h 38m

1 stop

STS12:03 pmSanta Rosa Sonoma County

$534

American Airlines

May 28

STS1:03 pmSanta Rosa Sonoma County

8h 56m

2 stops

STL11:59 pmLambert-St Louis

May 31

STL8:00 amLambert-St Louis

6h 33m

1 stop

STS12:33 pmSanta Rosa Sonoma County

$539

American Airlines

May 28

STS1:03 pmSanta Rosa Sonoma County

8h 56m

2 stops

STL11:59 pmLambert-St Louis

May 31

STL5:25 amLambert-St Louis

9h 08m

2 stops

STS12:33 pmSanta Rosa Sonoma County

$544

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Santa RosaChicago

STS - ORD

STSORD

Santa Rosa Sonoma County

Sat 5/23

7:06 am-6:50 pm

1 stop9h 44m

Chicago O'Hare Intl

Wed 5/27

9:00 am-2:13 pm

1 stop7h 13m

$303

Santa RosaChicago

STS - ORD

STSORD

Santa Rosa Sonoma County

Tue 5/19

7:01 am-6:50 pm

1 stop9h 49m

Chicago O'Hare Intl

Sat 5/23

9:00 am-11:28 pm

1 stop16h 28m

$338

Santa RosaChicago

STS - ORD

STSORD

Santa Rosa Sonoma County

Wed 4/22

1:13 pm-11:59 pm

1 stop8h 46m

Chicago O'Hare Intl

Sat 4/25

6:00 am-12:21 pm

1 stop8h 21m

$344

Santa RosaChicago

STS - ORD

STSORD

Santa Rosa Sonoma County

Sat 6/6

7:06 am-11:55 pm

1 stop14h 49m

Chicago O'Hare Intl

Tue 6/9

9:00 am-11:56 pm

1 stop16h 56m

$345

Santa RosaChicago

STS - ORD

STSORD

Santa Rosa Sonoma County

Tue 5/5

7:23 am-7:03 pm

1 stop9h 40m

Chicago O'Hare Intl

Mon 5/11

3:52 pm-11:27 pm

1 stop9h 35m

$346

Santa RosaSt. Louis

STS - STL

STSSTL

Santa Rosa Sonoma County

Mon 6/1

11:00 am-9:10 pm

1 stop8h 10m

Lambert-St Louis

Wed 6/3

9:10 am-3:55 pm

1 stop8h 45m

$477

Santa RosaSt. Louis

STS - STL

STSSTL

Santa Rosa Sonoma County

Mon 6/1

11:00 am-9:10 pm

1 stop8h 10m

Lambert-St Louis

Wed 6/3

2:30 pm-10:10 pm

2 stops9h 40m

$482

Quickest round-trip

Santa RosaSt. Louis

STS - STL

STSSTL

Santa Rosa Sonoma County

Sat 6/13

12:15 pm-12:35 am

1 stop10h 20m

Lambert-St Louis

Sat 6/20

5:40 am-9:35 am

1 stop5h 55m

$524

Santa RosaSt. Louis

STS - STL

STSSTL

Santa Rosa Sonoma County

Thu 5/28

1:03 pm-11:58 pm

1 stop8h 55m

Lambert-St Louis

Sun 5/31

5:25 am-12:03 pm

1 stop8h 38m

$534

Santa RosaMoline

STS - MLI

STSMLI

Santa Rosa Sonoma County

Fri 5/1

12:56 pm-11:29 pm

2 stops8h 33m

Moline Quad-City

Thu 5/7

7:25 am-3:53 pm

2 stops10h 28m

$2,052

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Santa Rosa to Illinois

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from Santa Rosa Sonoma County to Illinois?

Alaska Airlines and American Airlines are the most popular carriers operating from Santa Rosa Sonoma County to Illinois

What airlines fly to Illinois?

United Airlines, American Airlines and Southwest are the top three most popular airlines that fly to Illinois from Santa Rosa according to our data. United Airlines is the first choice among our users, with 47% of people opting to fly with this airline when traveling to Illinois. Keep in mind that there are 9 different airlines that fly to Illinois on a routine basis, so you have a few additional options to choose from.

Cheap Santa Rosa to Illinois flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Santa Rosa to Illinois

Fastest flight time	6h 49m
Direct flights	None

The fastest flight from Santa Rosa to Illinois takes 6h 49m

There are no direct flights from Santa Rosa to Illinois. There are no popular flight routes from Santa Rosa to Illinois.

Search flight deals

When did momondo last update prices for flights from Santa Rosa Sonoma County Airport to Illinois?
Prices for flights from Santa Rosa Sonoma County Airport to Illinois are refreshed on a daily basis.
How many operators does momondo search for flights from Santa Rosa Sonoma County Airport to Illinois?
There is 1 operator available for flights from Santa Rosa Sonoma County Airport to Illinois as of April 2026.
How old do you have to be to fly from Santa Rosa Sonoma County Airport to Illinois?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Santa Rosa Sonoma County Airport to Illinois.
What documentation or ID do you need to fly to Illinois?
The travel and health documents required for your trip to Illinois can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Illinois. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from Santa Rosa to Illinois

Compare and see reviews for airlines that fly from Santa Rosa to Illinois with momondo

Airline	Rating	Free Cancellation	Price
Alaska Airlines	PriceFrom $292	Free Cancellation	Rating 7.9 12,145 reviews		Search Alaska Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Santa Rosa to Illinois?

Finding the right flight to Illinois from Santa Rosa is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Illinois quick and easy, saving you time and money.

Can I find flights from Santa Rosa to Illinois with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Santa Rosa to Illinois flights to just show those with flexible booking policies.

How can momondo help me find flights from Santa Rosa to Illinois?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Santa Rosa to Illinois.

I’m not ready to book a flight from Santa Rosa to Illinois right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Santa Rosa to Illinois flights. All you need is a valid email address and we will do the rest; it is that quick and easy.