How does KAYAK find such low prices on flights from Illinois to Santa Rosa?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Illinois to Santa Rosa.

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Illinois to Santa Rosa?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Santa Rosa from Illinois is likely to change within 7 days, so travelers know whether to wait or book now.

What is the Hacker Fare option on flights from Illinois to Santa Rosa?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Santa Rosa with an airline and back to Illinois with another airline.

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Illinois to Santa Rosa?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Santa Rosa from Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

$159 CHEAP FLIGHTS from Illinois to Santa Rosa

Save 25% or more on flights. Compare deals from all over the web.

Never overpay with our price tracking tools.

Filter searches by price, airline and more to find your best flights.

Flight Deals

Cheap Flights from Illinois to Santa Rosa

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Last minute

Recent round-trip flight deals from Illinois to Santa Rosa

Thu, Dec 24 - Wed, Dec 30

5:00 am - 12:49 pmORD Chicago O'Hare Intl-STS Santa Rosa Sonoma County

9h 49m1 stop Phoenix Sky Harbor Intl

4:25 pm - 12:59 amSTS Santa Rosa Sonoma County-ORD Chicago O'Hare Intl

6h 34m1 stop Phoenix Sky Harbor Intl

$323American Airlines

Wed, Nov 11 - Mon, Nov 16

7:20 am - 3:04 pmORD Chicago O'Hare Intl-STS Santa Rosa Sonoma County

9h 44m1 stop San Diego

6:00 am - 6:59 pmSTS Santa Rosa Sonoma County-ORD Chicago O'Hare Intl

10h 59m1 stop San Diego

$323Alaska Airlines

Sat, Nov 14 - Sat, Nov 21

7:00 am - 11:08 pmORD Chicago O'Hare Intl-STS Santa Rosa Sonoma County

18h 08m1 stop Seattle/Tacoma Intl

7:52 pm - 1:18 pmSTS Santa Rosa Sonoma County-ORD Chicago O'Hare Intl

15h 26m1 stop San Diego

$323Alaska Airlines

Sun, Dec 6 - Thu, Dec 10

9:30 am - 3:35 pmMDW Chicago Midway-STS Santa Rosa Sonoma County

8h 05m1 stop Hollywood Burbank

3:00 pm - 12:15 amSTS Santa Rosa Sonoma County-MDW Chicago Midway

7h 15m1 stop Las Vegas Harry Reid Intl

$335Southwest

Sun, Dec 6 - Thu, Dec 10

9:30 am - 3:35 pmMDW Chicago Midway-STS Santa Rosa Sonoma County

8h 05m1 stop Hollywood Burbank

3:00 pm - 5:45 amSTS Santa Rosa Sonoma County-MDW Chicago Midway

12h 45m2 stops Las Vegas Harry Reid Intl Phoenix Sky Harbor Intl

$346Southwest

Sat, Nov 14 - Sat, Nov 21

3:59 pm - 11:08 pmORD Chicago O'Hare Intl-STS Santa Rosa Sonoma County

9h 09m1 stop Seattle/Tacoma Intl

1:52 pm - 5:56 amSTS Santa Rosa Sonoma County-ORD Chicago O'Hare Intl

14h 04m2 stops Las Vegas Harry Reid Intl Seattle/Tacoma Intl

$350Alaska Airlines

Wed, Nov 25 - Sat, Dec 5

6:05 pm - 11:59 pmORD Chicago O'Hare Intl-STS Santa Rosa Sonoma County

7h 54m1 stop Phoenix Sky Harbor Intl

7:10 am - 5:55 pmSTS Santa Rosa Sonoma County-ORD Chicago O'Hare Intl

8h 45m1 stop Phoenix Sky Harbor Intl

$361American Airlines

Wed, Nov 25 - Sat, Dec 5

6:05 pm - 11:59 pmORD Chicago O'Hare Intl-STS Santa Rosa Sonoma County

7h 54m1 stop Phoenix Sky Harbor Intl

7:10 am - 4:09 pmSTS Santa Rosa Sonoma County-ORD Chicago O'Hare Intl

6h 59m1 stop Phoenix Sky Harbor Intl

$362American Airlines

Thu, Dec 24 - Tue, Dec 29

5:00 am - 12:49 pmORD Chicago O'Hare Intl-STS Santa Rosa Sonoma County

9h 49m1 stop Phoenix Sky Harbor Intl

4:25 pm - 12:59 amSTS Santa Rosa Sonoma County-ORD Chicago O'Hare Intl

6h 34m1 stop Phoenix Sky Harbor Intl

$364American Airlines

Tue, Nov 10 - Tue, Nov 17

6:05 am - 12:15 pmMDW Chicago Midway-STS Santa Rosa Sonoma County

8h 10m2 stops Denver Intl Las Vegas Harry Reid Intl

3:00 pm - 5:45 amSTS Santa Rosa Sonoma County-MDW Chicago Midway

12h 45m2 stops Las Vegas Harry Reid Intl Phoenix Sky Harbor Intl

$378Southwest

Recent last minute flight deals from Illinois to Santa Rosa

Mon, Oct 26 - Wed, Oct 28

7:20 am - 4:12 pmORD Chicago O'Hare Intl-STS Santa Rosa Sonoma County

34h 52m2 stops San Diego Las Vegas Harry Reid Intl

2:00 pm - 4:50 pmSTS Santa Rosa Sonoma County-ORD Chicago O'Hare Intl

24h 50m2 stops Las Vegas Harry Reid Intl Seattle/Tacoma Intl

$804Alaska Airlines

Thu, Oct 29 - Sun, Nov 1

2:21 pm - 11:00 pmORD Chicago O'Hare Intl-STS Santa Rosa Sonoma County

10h 39m1 stop San Diego

8:20 pm - 1:17 pmSTS Santa Rosa Sonoma County-ORD Chicago O'Hare Intl

14h 57m1 stop San Diego

$867Alaska Airlines

Thu, Oct 29 - Tue, Nov 3

2:21 pm - 11:00 pmORD Chicago O'Hare Intl-STS Santa Rosa Sonoma County

10h 39m1 stop San Diego

8:40 am - 6:59 pmSTS Santa Rosa Sonoma County-ORD Chicago O'Hare Intl

8h 19m1 stop San Diego

$867Alaska Airlines

Thu, Oct 29 - Sat, Oct 31

7:20 am - 11:00 pmORD Chicago O'Hare Intl-STS Santa Rosa Sonoma County

17h 40m1 stop San Diego

10:50 am - 2:17 pmSTS Santa Rosa Sonoma County-ORD Chicago O'Hare Intl

25h 27m1 stop San Diego

$867Alaska Airlines

Thu, Oct 29 - Wed, Nov 4

2:21 pm - 11:00 pmORD Chicago O'Hare Intl-STS Santa Rosa Sonoma County

10h 39m1 stop San Diego

8:40 am - 6:59 pmSTS Santa Rosa Sonoma County-ORD Chicago O'Hare Intl

8h 19m1 stop San Diego

$867Alaska Airlines

Thu, Oct 29 - Mon, Nov 2

7:20 am - 11:00 pmORD Chicago O'Hare Intl-STS Santa Rosa Sonoma County

17h 40m1 stop San Diego

8:20 pm - 1:17 pmSTS Santa Rosa Sonoma County-ORD Chicago O'Hare Intl

14h 57m1 stop San Diego

$867Alaska Airlines

Thu, Oct 29 - Mon, Nov 2

6:00 am - 7:25 pmORD Chicago O'Hare Intl-STS Santa Rosa Sonoma County

15h 25m2 stops Seattle/Tacoma Intl Ontario

6:00 am - 11:49 pmSTS Santa Rosa Sonoma County-ORD Chicago O'Hare Intl

15h 49m1 stop San Diego

$920Alaska Airlines

Wed, Oct 28 - Mon, Nov 2

7:20 am - 2:52 pmORD Chicago O'Hare Intl-STS Santa Rosa Sonoma County

9h 32m1 stop San Diego

6:00 am - 6:59 pmSTS Santa Rosa Sonoma County-ORD Chicago O'Hare Intl

10h 59m1 stop San Diego

$929Alaska Airlines

Thu, Oct 29 - Tue, Nov 3

9:59 am - 4:05 pmORD Chicago O'Hare Intl-STS Santa Rosa Sonoma County

8h 06m2 stops Minneapolis St Paul Salt Lake City

11:21 am - 10:05 pmSTS Santa Rosa Sonoma County-ORD Chicago O'Hare Intl

8h 44m1 stop Salt Lake City

$974Delta

Thu, Oct 29 - Sat, Oct 31

9:59 am - 4:05 pmORD Chicago O'Hare Intl-STS Santa Rosa Sonoma County

8h 06m2 stops Minneapolis St Paul Salt Lake City

11:21 am - 10:05 pmSTS Santa Rosa Sonoma County-ORD Chicago O'Hare Intl

8h 44m1 stop Salt Lake City

$974Delta

Useful Info

Low season	February
High season	July
Cheapest flight	$159

Best time to beat the crowds with an average 8% drop in price.

Most popular time to fly with an average 4% increase in price.

Flight from Chicago to Santa Rosa

How does KAYAK find such low prices on flights from Illinois to Santa Rosa?
KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Illinois to Santa Rosa.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Illinois to Santa Rosa?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Santa Rosa from Illinois is likely to change within 7 days, so travelers know whether to wait or book now.
What is the Hacker Fare option on flights from Illinois to Santa Rosa?
Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Santa Rosa with an airline and back to Illinois with another airline.
What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Illinois to Santa Rosa?
Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Santa Rosa from Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.