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

As of July 2026, 4 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 25% 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

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 July 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.

$175 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.

12:29 pm - 10:13 pm

SBP

ORD

7h 44m

1 stop

5:00 am - 12:05 pm

ORD

SBP

9h 05m

1 stop

$349American Airlines

Tue, Sep 1 - Sat, Sep 5

12:51 pm - 12:18 am

SBP

ORD

9h 27m

2 stops

6:00 am - 11:39 am

ORD

SBP

7h 39m

1 stop

$354American Airlines

Tue, Sep 1 - Sat, Sep 5

12:51 pm - 12:18 am

SBP

ORD

9h 27m

2 stops

5:00 am - 12:05 pm

ORD

SBP

9h 05m

2 stops

$359American Airlines

Tue, Sep 1 - Sat, Sep 5

5:57 pm - 1:21 pm

SBP

ORD

17h 24m

1 stop

6:20 am - 5:17 pm

ORD

SBP

12h 57m

1 stop

$384Alaska Airlines

Thu, Jul 30 - Mon, Aug 3

5:57 pm - 1:21 pm

SBP

ORD

17h 24m

1 stop

7:20 am - 4:55 pm

ORD

SBP

11h 35m

1 stop

$419Alaska Airlines

Tue, Jul 14 - Sat, Jul 18

6:00 am - 7:21 pm

SBP

ORD

11h 21m

1 stop

7:16 pm - 2:56 pm

ORD

SBP

21h 40m

2 stops

$446Alaska Airlines

Thu, Oct 1 - Mon, Oct 5

12:55 pm - 8:50 pm

SBP

PIA

5h 55m

1 stop

8:45 am - 1:24 pm

PIA

SBP

6h 39m

1 stop

$449United Airlines

Sat, Aug 29 - Tue, Sep 1

12:55 pm - 8:50 pm

SBP

PIA

5h 55m

1 stop

10:41 am - 9:00 pm

PIA

SBP

12h 19m

2 stops

$454United Airlines

Sat, Aug 29 - Tue, Sep 1

5:00 am - 7:03 pm

SBP

PIA

12h 03m

2 stops

8:45 am - 7:57 pm

PIA

SBP

13h 12m

2 stops

$530United Airlines

Sat, Aug 29 - Tue, Sep 1

6:05 pm - 10:09 am

SBP

PIA

14h 04m

2 stops

1:13 pm - 11:44 pm

PIA

SBP

12h 31m

2 stops

$565United Airlines

Wed, Jul 15 - Tue, Jul 21

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United Airlines flights from San Luis Obispo to Illinois

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

United Airlines

Sep 5

SBP2:20 pmSan Luis Obispo County

8h 39m

1 stop

ORD12:59 amChicago O'Hare Intl

Sep 13

ORD5:55 amChicago O'Hare Intl

6h 16m

1 stop

SBP10:11 amSan Luis Obispo County

$449

United Airlines

Aug 29

SBP12:55 pmSan Luis Obispo County

5h 55m

1 stop

PIA8:50 pmGreater Peoria

Sep 1

PIA10:41 amGreater Peoria

12h 19m

2 stops

SBP9:00 pmSan Luis Obispo County

$454

United Airlines

Jul 24

SBP2:06 pmSan Luis Obispo County

6h 53m

1 stop

ORD10:59 pmChicago O'Hare Intl

Jul 26

ORD6:10 amChicago O'Hare Intl

7h 28m

1 stop

SBP11:38 amSan Luis Obispo County

$458

Alaska Airlines flights from San Luis Obispo to Illinois

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

Alaska Airlines

Jul 30

SBP5:57 pmSan Luis Obispo County

17h 24m

1 stop

ORD1:21 pmChicago O'Hare Intl

Aug 3

ORD6:20 amChicago O'Hare Intl

12h 57m

1 stop

SBP5:17 pmSan Luis Obispo County

$384

Alaska Airlines

Jul 14

SBP5:57 pmSan Luis Obispo County

17h 24m

1 stop

ORD1:21 pmChicago O'Hare Intl

Jul 18

ORD7:20 amChicago O'Hare Intl

11h 35m

1 stop

SBP4:55 pmSan Luis Obispo County

$419

Alaska Airlines

Oct 1

SBP6:00 amSan Luis Obispo County

11h 21m

1 stop

ORD7:21 pmChicago O'Hare Intl

Oct 5

ORD7:16 pmChicago O'Hare Intl

21h 40m

2 stops

SBP2:56 pmSan Luis Obispo County

$446

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

San Luis ObispoChicago

SBP - ORD

SBPORD

San Luis Obispo County

Tue 9/1

12:29 pm-10:13 pm

1 stop7h 44m

Chicago O'Hare Intl

Sat 9/5

5:00 am-12:05 pm

1 stop9h 05m

$349

San Luis ObispoChicago

SBP - ORD

SBPORD

San Luis Obispo County

Tue 9/1

12:51 pm-12:18 am

2 stops9h 27m

Chicago O'Hare Intl

Sat 9/5

6:00 am-11:39 am

1 stop7h 39m

$354

San Luis ObispoChicago

SBP - ORD

SBPORD

San Luis Obispo County

Tue 9/1

12:51 pm-12:18 am

2 stops9h 27m

Chicago O'Hare Intl

Sat 9/5

5:00 am-12:05 pm

2 stops9h 05m

$359

San Luis ObispoChicago

SBP - ORD

SBPORD

San Luis Obispo County

Thu 7/30

5:57 pm-1:21 pm

1 stop17h 24m

Chicago O'Hare Intl

Mon 8/3

6:20 am-5:17 pm

1 stop12h 57m

$384

San Luis ObispoChicago

SBP - ORD

SBPORD

San Luis Obispo County

Tue 7/14

5:57 pm-1:21 pm

1 stop17h 24m

Chicago O'Hare Intl

Sat 7/18

7:20 am-4:55 pm

1 stop11h 35m

$419

San Luis ObispoChicago

SBP - ORD

SBPORD

San Luis Obispo County

Thu 10/1

6:00 am-7:21 pm

1 stop11h 21m

Chicago O'Hare Intl

Mon 10/5

7:16 pm-2:56 pm

2 stops21h 40m

$446

Quickest round-trip

San Luis ObispoPeoria

SBP - PIA

SBPPIA

San Luis Obispo County

Sat 8/29

12:55 pm-8:50 pm

1 stop5h 55m

Greater Peoria

Tue 9/1

8:45 am-1:24 pm

1 stop6h 39m

$449

San Luis ObispoPeoria

SBP - PIA

SBPPIA

San Luis Obispo County

Sat 8/29

12:55 pm-8:50 pm

1 stop5h 55m

Greater Peoria

Tue 9/1

10:41 am-9:00 pm

2 stops12h 19m

$454

San Luis ObispoPeoria

SBP - PIA

SBPPIA

San Luis Obispo County

Sat 8/29

5:00 am-7:03 pm

2 stops12h 03m

Greater Peoria

Tue 9/1

8:45 am-7:57 pm

2 stops13h 12m

$530

San Luis ObispoPeoria

SBP - PIA

SBPPIA

San Luis Obispo County

Wed 7/15

6:05 pm-10:09 am

2 stops14h 04m

Greater Peoria

Tue 7/21

1:13 pm-11:44 pm

2 stops12h 31m

$565

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 $230, 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 February is also cheap. Prices for this month can be found on momondo for an average of $240.

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 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	5h 55m
Direct flights	None

The fastest flight from San Luis Obispo to Illinois takes 5h 55m

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 2 as of July 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 7.1 11,764 reviews		Search American Airlines flights
United Airlines	PriceFrom $373	Free Cancellation	Rating 7.4 9,927 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.