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

As of February 2026, 3 flights take off from San Luis Obispo and land in Illinois each week. The most common flight departure day for this route is Wed, with 33% of weekly flights taking off on this day.

What airlines fly to Illinois?

American Airlines, United Airlines and Southwest are the top three most popular airlines that fly to Illinois from San Luis Obispo according to our data. American Airlines is the first choice among our users, with 54% of people opting to fly with this airline when traveling to Illinois. Keep in mind that there are 3 different airlines that fly to Illinois on a routine basis, so you have a few additional options to choose from.

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

Alaska Airlines and United Airlines are the most popular carriers operating from San Luis Obispo County 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 2 as of February 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.

$155 Cheap Flights from San Luis Obispo to Illinois in 2026

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

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

Find the cheapest flights from San Luis Obispo to Illinois

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

2:27 pm - 11:59 pm

SBP

ORD

7h 32m

1 stop

8:50 am - 2:59 pm

ORD

SBP

8h 09m

1 stop

$237Alaska Airlines

Sat, May 2 - Sat, May 9

2:27 pm - 11:59 pm

SBP

ORD

7h 32m

1 stop

8:50 am - 2:59 pm

ORD

SBP

8h 09m

1 stop

$251Alaska Airlines

Sat, May 2 - Sat, May 9

7:10 pm - 5:25 am

SBP

ORD

8h 15m

1 stop

5:26 am - 12:02 pm

ORD

SBP

8h 36m

1 stop

$280American Airlines

Wed, Apr 1 - Sat, Apr 4

3:39 pm - 6:40 am

SBP

ORD

13h 01m

2 stops

8:50 am - 2:59 pm

ORD

SBP

8h 09m

1 stop

$300Alaska Airlines

Sat, May 2 - Sat, May 9

12:42 pm - 9:39 pm

SBP

ORD

6h 57m

1 stop

3:26 pm - 10:12 pm

ORD

SBP

8h 46m

1 stop

$304United Airlines

Wed, May 27 - Sat, May 30

8:50 pm - 6:20 am

SBP

ORD

7h 30m

1 stop

12:40 pm - 8:00 pm

ORD

SBP

9h 20m

1 stop

$309United Airlines

Sun, Apr 12 - Sat, May 2

3:39 pm - 6:40 am

SBP

ORD

13h 01m

2 stops

8:50 am - 2:59 pm

ORD

SBP

8h 09m

1 stop

$312Alaska Airlines

Sat, May 2 - Sat, May 9

1:22 pm - 12:42 am

SBP

ORD

9h 20m

1 stop

2:59 pm - 10:45 pm

ORD

SBP

9h 46m

2 stops

$314American Airlines

Wed, May 27 - Sat, May 30

3:39 pm - 6:40 am

SBP

ORD

13h 01m

2 stops

8:50 am - 2:59 pm

ORD

SBP

8h 09m

1 stop

$319Alaska Airlines

Sat, May 2 - Sat, May 9

2:06 pm - 12:59 am

SBP

ORD

8h 53m

1 stop

6:10 pm - 11:44 pm

ORD

SBP

7h 34m

1 stop

$325United Airlines

Fri, Jul 10 - Mon, Jul 13

Alaska Airlines flights from San Luis Obispo to Illinois

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

Alaska Airlines

May 2

SBP2:27 pmSan Luis Obispo County

7h 32m

1 stop

ORD11:59 pmChicago O'Hare Intl

May 9

ORD8:50 amChicago O'Hare Intl

8h 09m

1 stop

SBP2:59 pmSan Luis Obispo County

$237

Alaska Airlines

May 2

SBP2:27 pmSan Luis Obispo County

7h 32m

1 stop

ORD11:59 pmChicago O'Hare Intl

May 9

ORD8:50 amChicago O'Hare Intl

8h 09m

1 stop

SBP2:59 pmSan Luis Obispo County

$251

Alaska Airlines

May 2

SBP3:39 pmSan Luis Obispo County

13h 01m

2 stops

ORD6:40 amChicago O'Hare Intl

May 9

ORD8:50 amChicago O'Hare Intl

8h 09m

1 stop

SBP2:59 pmSan Luis Obispo County

$300

United Airlines flights from San Luis Obispo to Illinois

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

United Airlines

May 27

SBP12:42 pmSan Luis Obispo County

6h 57m

1 stop

ORD9:39 pmChicago O'Hare Intl

May 30

ORD3:26 pmChicago O'Hare Intl

8h 46m

1 stop

SBP10:12 pmSan Luis Obispo County

$304

United Airlines

Apr 12

SBP8:50 pmSan Luis Obispo County

7h 30m

1 stop

ORD6:20 amChicago O'Hare Intl

May 2

ORD12:40 pmChicago O'Hare Intl

9h 20m

1 stop

SBP8:00 pmSan Luis Obispo County

$309

United Airlines

Jul 10

SBP2:06 pmSan Luis Obispo County

8h 53m

1 stop

ORD12:59 amChicago O'Hare Intl

Jul 13

ORD6:10 pmChicago O'Hare Intl

7h 34m

1 stop

SBP11:44 pmSan Luis Obispo County

$325

momondo Fare Finder

Use the filters below to find and compare flights from San Luis Obispo to Illinois that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

San Luis ObispoChicago

SBP - ORD

SBPORD

San Luis Obispo County

Sat 5/2

2:27 pm-11:59 pm

1 stop7h 32m

Chicago O'Hare Intl

Sat 5/9

8:50 am-2:59 pm

1 stop8h 09m

$237

San Luis ObispoChicago

SBP - ORD

SBPORD

San Luis Obispo County

Sat 5/2

2:27 pm-11:59 pm

1 stop7h 32m

Chicago O'Hare Intl

Sat 5/9

8:50 am-2:59 pm

1 stop8h 09m

$251

San Luis ObispoChicago

SBP - ORD

SBPORD

San Luis Obispo County

Wed 4/1

7:10 pm-5:25 am

1 stop8h 15m

Chicago O'Hare Intl

Sat 4/4

5:26 am-12:02 pm

1 stop8h 36m

$280

San Luis ObispoChicago

SBP - ORD

SBPORD

San Luis Obispo County

Sat 5/2

3:39 pm-6:40 am

2 stops13h 01m

Chicago O'Hare Intl

Sat 5/9

8:50 am-2:59 pm

1 stop8h 09m

$300

San Luis ObispoChicago

SBP - ORD

SBPORD

San Luis Obispo County

Wed 5/27

12:42 pm-9:39 pm

1 stop6h 57m

Chicago O'Hare Intl

Sat 5/30

3:26 pm-10:12 pm

1 stop8h 46m

$304

San Luis ObispoChicago

SBP - ORD

SBPORD

San Luis Obispo County

Sun 4/12

8:50 pm-6:20 am

1 stop7h 30m

Chicago O'Hare Intl

Sat 5/2

12:40 pm-8:00 pm

1 stop9h 20m

$309

San Luis ObispoChicago

SBP - ORD

SBPORD

San Luis Obispo County

Sat 5/2

3:39 pm-6:40 am

2 stops13h 01m

Chicago O'Hare Intl

Sat 5/9

8:50 am-2:59 pm

1 stop8h 09m

$312

San Luis ObispoChicago

SBP - ORD

SBPORD

San Luis Obispo County

Wed 5/27

1:22 pm-12:42 am

1 stop9h 20m

Chicago O'Hare Intl

Sat 5/30

2:59 pm-10:45 pm

2 stops9h 46m

$314

San Luis ObispoChicago

SBP - ORD

SBPORD

San Luis Obispo County

Sat 5/2

3:39 pm-6:40 am

2 stops13h 01m

Chicago O'Hare Intl

Sat 5/9

8:50 am-2:59 pm

1 stop8h 09m

$319

San Luis ObispoChicago

SBP - ORD

SBPORD

San Luis Obispo County

Fri 7/10

2:06 pm-12:59 am

1 stop8h 53m

Chicago O'Hare Intl

Mon 7/13

6:10 pm-11:44 pm

1 stop7h 34m

$325

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 August. Flight prices, which tend to average around $317, 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 August, then flying in March is also cheap. Prices for this month can be found on momondo for an average of $334.

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

You could potentially save up to 60% 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

Fastest flight time	6h 57m
Direct flights	None

The fastest flight from San Luis Obispo to Illinois takes 6h 57m

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

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 2 as of February 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 $274	Free Cancellation	Rating 7.2 11,357 reviews		Search American Airlines flights
United Airlines	PriceFrom $378	Free Cancellation	Rating 7.4 9,349 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.