How many flights depart from San Luis Obispo to Illinois on average per week?

As of August 2026, 2 flights take off from San Luis Obispo and land in Illinois each week. The most common flight departure day for this route is Mon, with 50% of weekly flights taking off on this day.

What is the cheapest airline that flies from San Luis Obispo County to Illinois?

Alaska Airlines is the most popular carrier operating from San Luis Obispo County to Illinois

What airlines fly to Illinois?

United Airlines, American Airlines and Alaska Airlines are the top three most popular airlines that fly to Illinois from San Luis Obispo according to our data. United Airlines is the first choice among our users, with 62% of people opting to fly with this airline when traveling to Illinois. Keep in mind that there are 4 different airlines that fly to Illinois on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from San Luis Obispo County Airport to Illinois?

Prices for flights from San Luis Obispo County Airport to Illinois are refreshed on a daily basis.

How many operators does momondo search for flights from San Luis Obispo County Airport to Illinois?

The number of operators available for flights from San Luis Obispo County Airport to Illinois is 3 as of August 2026.

How old do you have to be to fly from San Luis Obispo County Airport to Illinois?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from San Luis Obispo County Airport to Illinois.

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

The necessary travel and health documents for your Illinois trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$180 Cheap Flights from San Luis Obispo to Illinois in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from San Luis Obispo to Illinois

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

5:00 am - 2:55 pmSBP San Luis Obispo County-ORD Chicago O'Hare Intl

7h 55m1 stop Denver Intl

1:00 pm - 5:38 pmORD Chicago O'Hare Intl-SBP San Luis Obispo County

6h 38m1 stop Los Angeles

$359United Airlines

Wed, Oct 28 - Sun, Nov 1

12:55 pm - 9:30 pmSBP San Luis Obispo County-ORD Chicago O'Hare Intl

6h 35m1 stop Denver Intl

5:55 am - 10:11 amORD Chicago O'Hare Intl-SBP San Luis Obispo County

6h 16m1 stop Los Angeles

$359United Airlines

Fri, Sep 11 - Sun, Sep 13

1:00 pm - 9:30 pmSBP San Luis Obispo County-ORD Chicago O'Hare Intl

6h 30m1 stop Phoenix Sky Harbor Intl

6:00 am - 11:48 amORD Chicago O'Hare Intl-SBP San Luis Obispo County

7h 48m1 stop Dallas/Fort Worth

$359American Airlines

Tue, Sep 15 - Tue, Oct 6

6:50 pm - 5:59 amSBP San Luis Obispo County-ORD Chicago O'Hare Intl

9h 09m1 stop Phoenix Sky Harbor Intl

5:00 am - 12:07 pmORD Chicago O'Hare Intl-SBP San Luis Obispo County

9h 07m1 stop Phoenix Sky Harbor Intl

$359American Airlines

Wed, Oct 7 - Tue, Oct 13

6:03 am - 7:21 pmSBP San Luis Obispo County-ORD Chicago O'Hare Intl

11h 18m1 stop San Diego

8:17 pm - 1:46 pmORD Chicago O'Hare Intl-SBP San Luis Obispo County

19h 29m1 stop San Diego

$359Alaska Airlines

Mon, Sep 28 - Fri, Oct 2

6:43 pm - 6:20 amSBP San Luis Obispo County-ORD Chicago O'Hare Intl

9h 37m1 stop Seattle/Tacoma Intl

8:17 pm - 1:46 pmORD Chicago O'Hare Intl-SBP San Luis Obispo County

19h 29m1 stop San Diego

$359Alaska Airlines

Tue, Sep 29 - Fri, Oct 2

2:20 pm - 11:10 pmSBP San Luis Obispo County-ORD Chicago O'Hare Intl

6h 50m1 stop San Francisco

5:59 am - 12:02 pmORD Chicago O'Hare Intl-SBP San Luis Obispo County

8h 03m1 stop San Francisco

$359United Airlines

Sat, Sep 19 - Sat, Sep 26

6:51 pm - 5:59 amSBP San Luis Obispo County-ORD Chicago O'Hare Intl

9h 08m1 stop Phoenix Sky Harbor Intl

6:59 am - 12:11 pmORD Chicago O'Hare Intl-SBP San Luis Obispo County

7h 12m1 stop Phoenix Sky Harbor Intl

$359American Airlines

Thu, Sep 17 - Tue, Sep 22

10:11 am - 11:59 pmSBP San Luis Obispo County-ORD Chicago O'Hare Intl

11h 48m1 stop Seattle/Tacoma Intl

2:18 pm - 11:50 pmORD Chicago O'Hare Intl-SBP San Luis Obispo County

11h 32m1 stop San Diego

$394Alaska Airlines

Tue, Sep 1 - Sat, Sep 5

2:15 pm - 12:55 amSBP San Luis Obispo County-ORD Chicago O'Hare Intl

8h 40m1 stop San Francisco

4:20 pm - 9:00 pmORD Chicago O'Hare Intl-SBP San Luis Obispo County

6h 40m1 stop Denver Intl

$418United Airlines

Fri, Oct 9 - Tue, Oct 13

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Alaska Airlines flights from San Luis Obispo to Illinois

Our best Alaska Airlines deals on San Luis Obispo to Illinois flight tickets

Alaska Airlines

Sep 1

SBP10:11 amSan Luis Obispo County

11h 48m

1 stop

ORD11:59 pmChicago O'Hare Intl

Sep 5

ORD2:18 pmChicago O'Hare Intl

11h 32m

1 stop

SBP11:50 pmSan Luis Obispo County

$394

Alaska Airlines

Sep 16

SBP3:24 pmSan Luis Obispo County

25h 57m

1 stop

ORD7:21 pmChicago O'Hare Intl

Sep 22

ORD7:20 amChicago O'Hare Intl

9h 24m

1 stop

SBP2:44 pmSan Luis Obispo County

$411

Alaska Airlines

Sep 1

SBP10:11 amSan Luis Obispo County

11h 48m

1 stop

ORD11:59 pmChicago O'Hare Intl

Sep 5

ORD2:18 pmChicago O'Hare Intl

11h 32m

1 stop

SBP11:50 pmSan Luis Obispo County

$413

American Airlines flights from San Luis Obispo to Illinois

Our best American Airlines deals on San Luis Obispo to Illinois flight tickets

American Airlines

Sep 15

SBP1:00 pmSan Luis Obispo County

6h 30m

1 stop

ORD9:30 pmChicago O'Hare Intl

Oct 6

ORD6:00 amChicago O'Hare Intl

7h 48m

1 stop

SBP11:48 amSan Luis Obispo County

$359

American Airlines

Sep 15

SBP1:00 pmSan Luis Obispo County

8h 30m

2 stops

ORD11:30 pmChicago O'Hare Intl

Oct 6

ORD5:00 amChicago O'Hare Intl

8h 48m

1 stop

SBP11:48 amSan Luis Obispo County

$364

American Airlines

Sep 15

SBP1:00 pmSan Luis Obispo County

8h 30m

2 stops

ORD11:30 pmChicago O'Hare Intl

Oct 6

ORD5:00 amChicago O'Hare Intl

9h 07m

2 stops

SBP12:07 pmSan Luis Obispo County

$369

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

San Luis ObispoChicago

SBP San Luis Obispo County - ORD Chicago O'Hare Intl

SBPORD

San Luis Obispo County

Wed 10/28

5:00 am-2:55 pm

1 stop7h 55m

Chicago O'Hare Intl

Sun 11/1

1:00 pm-5:38 pm

1 stop6h 38m

$359

Quickest round-trip

San Luis ObispoChicago

SBP San Luis Obispo County - ORD Chicago O'Hare Intl

SBPORD

San Luis Obispo County

Fri 9/11

12:55 pm-9:30 pm

1 stop6h 35m

Chicago O'Hare Intl

Sun 9/13

5:55 am-10:11 am

1 stop6h 16m

$359

San Luis ObispoChicago

SBP San Luis Obispo County - ORD Chicago O'Hare Intl

SBPORD

San Luis Obispo County

Tue 9/15

1:00 pm-9:30 pm

1 stop6h 30m

Chicago O'Hare Intl

Tue 10/6

6:00 am-11:48 am

1 stop7h 48m

$359

San Luis ObispoChicago

SBP San Luis Obispo County - ORD Chicago O'Hare Intl

SBPORD

San Luis Obispo County

Wed 10/7

6:50 pm-5:59 am

1 stop9h 09m

Chicago O'Hare Intl

Tue 10/13

5:00 am-12:07 pm

1 stop9h 07m

$359

San Luis ObispoChicago

SBP San Luis Obispo County - ORD Chicago O'Hare Intl

SBPORD

San Luis Obispo County

Mon 9/28

6:03 am-7:21 pm

1 stop11h 18m

Chicago O'Hare Intl

Fri 10/2

8:17 pm-1:46 pm

1 stop19h 29m

$359

San Luis ObispoChicago

SBP San Luis Obispo County - ORD Chicago O'Hare Intl

SBPORD

San Luis Obispo County

Tue 9/29

6:43 pm-6:20 am

1 stop9h 37m

Chicago O'Hare Intl

Fri 10/2

8:17 pm-1:46 pm

1 stop19h 29m

$359

San Luis ObispoChicago

SBP San Luis Obispo County - ORD Chicago O'Hare Intl

SBPORD

San Luis Obispo County

Sat 9/19

2:20 pm-11:10 pm

1 stop6h 50m

Chicago O'Hare Intl

Sat 9/26

5:59 am-12:02 pm

1 stop8h 03m

$359

San Luis ObispoChicago

SBP San Luis Obispo County - ORD Chicago O'Hare Intl

SBPORD

San Luis Obispo County

Thu 9/17

6:51 pm-5:59 am

1 stop9h 08m

Chicago O'Hare Intl

Tue 9/22

6:59 am-12:11 pm

1 stop7h 12m

$359

San Luis ObispoChicago

SBP San Luis Obispo County - ORD Chicago O'Hare Intl

SBPORD

San Luis Obispo County

Tue 9/1

10:11 am-11:59 pm

1 stop11h 48m

Chicago O'Hare Intl

Sat 9/5

2:18 pm-11:50 pm

1 stop11h 32m

$394

San Luis ObispoChicago

SBP San Luis Obispo County - ORD Chicago O'Hare Intl

SBPORD

San Luis Obispo County

Fri 10/9

2:15 pm-12:55 am

1 stop8h 40m

Chicago O'Hare Intl

Tue 10/13

4:20 pm-9:00 pm

1 stop6h 40m

$418

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 San Luis Obispo 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

Prices

Airlines

Other information

What is the cheapest month to fly to Illinois?

The cheapest month to fly to Illinois from San Luis Obispo is in January. Flight prices, which tend to average around $378, are often lower during this time because this is during the off-season. If you aren’t able to travel to Illinois during the month of January, then flying in October is also cheap. Prices for this month can be found on momondo for an average of $426.

What is the cheapest San Luis Obispo County to Illinois flight route?

Fly from San Luis Obispo County to Chicago O'Hare Intl for the best San Luis Obispo County - Illinois flight prices

What cabin class options are available on San Luis Obispo to Illinois flights?

There are 2 cabin classes available to choose from on San Luis Obispo to Illinois flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on San Luis Obispo to Illinois flights?

You could potentially save up to 22% on your flight if you consider stops on a San Luis Obispo to Illinois flight.

Cheap San Luis Obispo to Illinois flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from San Luis Obispo to Illinois

Best Price Found	$180
Fastest flight time	6h 02m
Direct flights	None

The best one-way flight to Illinois from San Luis Obispo in the past 72 hours is $180. The best round-trip flight deal from San Luis Obispo to Illinois found on momondo in the last 72 hours is $359.

The fastest flight from San Luis Obispo to Illinois takes 6h 02m

There are no direct flights from San Luis Obispo to Illinois. There are no popular flight routes from San Luis Obispo to Illinois.

Search flight deals

Frequently asked questions about flying from San Luis Obispo to Illinois

When did momondo last update prices for flights from San Luis Obispo County Airport to Illinois?
Prices for flights from San Luis Obispo County Airport to Illinois are refreshed on a daily basis.
How many operators does momondo search for flights from San Luis Obispo County Airport to Illinois?
The number of operators available for flights from San Luis Obispo County Airport to Illinois is 3 as of August 2026.
How old do you have to be to fly from San Luis Obispo County Airport to Illinois?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from San Luis Obispo County Airport to Illinois.
What documentation or ID do you need to fly to Illinois?
The necessary travel and health documents for your Illinois trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from San Luis Obispo to Illinois

Compare and see reviews for airlines that fly from San Luis Obispo to Illinois with momondo

Airline	Rating	Free Cancellation	Price
American Airlines	PriceFrom $279	Free Cancellation	Rating 7.1 11,957 reviews	Search American Airlines flights
Alaska Airlines	PriceFrom $290	Free Cancellation	Rating 7.9 12,813 reviews	Search Alaska Airlines flights
United Airlines	PriceFrom $348	Free Cancellation	Rating 7.4 10,103 reviews	Search United Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from San Luis Obispo to Illinois?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from San Luis Obispo to Illinois. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from San Luis Obispo to Illinois with flexible booking policies on momondo?

momondo does allow users to show only those flights to Illinois from San Luis Obispo which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from San Luis Obispo 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 San Luis Obispo to Illinois.

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

If you are not ready to book a flight from San Luis Obispo to Illinois now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Illinois and let you know when they change.