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Cheap flights from San Luis Obispo to Illinois from $135

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from San Luis Obispo to Illinois departing on 10/6. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from San Luis Obispo to Illinois

Cheap round-trip flights

Alaska Airlines Logo
6:00 am - 1:54 pmSBP-ORD
5h 54m1 stop
Alaska Airlines Logo
6:00 am - 6:40 pmORD-SBP
14h 40m1 stop
$266Alaska Airlines
Find Deal
Tue, Nov 18 - Sat, Nov 22
Alaska Airlines Logo
7:50 pm - 6:24 amSBP-ORD
8h 34m1 stop
Alaska Airlines Logo
5:00 am - 6:01 pmORD-SBP
15h 01m1 stop
$269Alaska Airlines
Find Deal
Fri, Oct 24 - Sun, Nov 2
American Airlines Logo
12:57 pm - 11:37 pmSBP-ORD
8h 40m2 stops
American Airlines Logo
5:00 am - 12:12 pmORD-SBP
9h 12m1 stop
$274American Airlines
Find Deal
Tue, Nov 18 - Sat, Nov 22
Alaska Airlines Logo
2:19 pm - 11:59 pmSBP-ORD
7h 40m1 stop
Alaska Airlines Logo
5:00 am - 6:01 pmORD-SBP
15h 01m1 stop
$296Alaska Airlines
Find Deal
Sat, Oct 25 - Sun, Nov 2
Logo
7:50 pm - 6:24 amSBP-ORD
8h 34m1 stop
Logo
5:00 am - 10:26 pmORD-SBP
19h 26m2 stops
$298
Find Deal
Fri, Oct 24 - Sun, Nov 2
Alaska Airlines Logo
7:50 pm - 6:24 amSBP-ORD
8h 34m1 stop
Alaska Airlines Logo
7:59 pm - 11:24 pmORD-SBP
29h 25m1 stop
$311Alaska Airlines
Find Deal
Mon, Oct 6 - Thu, Oct 9
American Airlines Logo
12:38 pm - 11:42 pmSBP-ORD
9h 04m2 stops
American Airlines Logo
8:30 am - 3:36 pmORD-SBP
9h 06m1 stop
$319American Airlines
Find Deal
Sat, Oct 25 - Sun, Nov 2
United Airlines Logo
10:55 am - 9:24 pmSBP-ORD
8h 29m1 stop
United Airlines Logo
7:20 am - 11:43 pmORD-SBP
18h 23m2 stops
$451United Airlines
Find Deal
Thu, Oct 2 - Sun, Oct 5
Logo
6:29 pm - 7:03 amSBP-ORD
10h 34m1 stop
Logo
7:55 am - 4:17 pmORD-SBP
10h 22m1 stop
$485
Find Deal
Fri, Sep 5 - Mon, Sep 8
United Airlines Logo
3:45 pm - 12:45 amSBP-ORD
7h 00m1 stop
United Airlines Logo
6:25 pm - 10:29 amORD-SBP
18h 04m1 stop
$573United Airlines
Find Deal
Fri, Sep 5 - Mon, Sep 8

Alaska Airlines flights from San Luis Obispo to Illinois

Our best Alaska Airlines deals on San Luis Obispo to Illinois flight tickets
Alaska Airlines
Nov 18
SBP6:00 amSan Luis Obispo County
5h 54m
1 stop
ORD1:54 pmChicago O'Hare Intl
Nov 22
ORD6:00 amChicago O'Hare Intl
14h 40m
1 stop
SBP6:40 pmSan Luis Obispo County
$266
Find similar
Alaska Airlines
Oct 24
SBP7:50 pmSan Luis Obispo County
8h 34m
1 stop
ORD6:24 amChicago O'Hare Intl
Nov 2
ORD5:00 amChicago O'Hare Intl
15h 01m
1 stop
SBP6:01 pmSan Luis Obispo County
$269
Find similar
Alaska Airlines
Oct 25
SBP2:19 pmSan Luis Obispo County
7h 40m
1 stop
ORD11:59 pmChicago O'Hare Intl
Nov 2
ORD5:00 amChicago O'Hare Intl
15h 01m
1 stop
SBP6:01 pmSan Luis Obispo County
$296
Find similar

American Airlines flights from San Luis Obispo to Illinois

Our best American Airlines deals on San Luis Obispo to Illinois flight tickets
American Airlines
Nov 18
SBP12:57 pmSan Luis Obispo County
8h 40m
2 stops
ORD11:37 pmChicago O'Hare Intl
Nov 22
ORD5:00 amChicago O'Hare Intl
9h 12m
1 stop
SBP12:12 pmSan Luis Obispo County
$274
Find similar
American Airlines
Oct 25
SBP12:38 pmSan Luis Obispo County
9h 04m
2 stops
ORD11:42 pmChicago O'Hare Intl
Nov 2
ORD8:30 amChicago O'Hare Intl
9h 06m
1 stop
SBP3:36 pmSan Luis Obispo County
$319
Find similar
American Airlines
Nov 18
SBP9:53 amSan Luis Obispo County
11h 44m
2 stops
ORD11:37 pmChicago O'Hare Intl
Nov 22
ORD8:10 amChicago O'Hare Intl
9h 26m
2 stops
SBP3:36 pmSan Luis Obispo County
$347
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from San Luis Obispo to Illinois that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated August 26, 2025.
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

Tue 11/18

6:00 am-1:54 pm

1 stop5h 54m

Chicago O'Hare Intl

Sat 11/22

6:00 am-6:40 pm

1 stop14h 40m

$266

San Luis ObispoChicago

SBP - ORD

SBPORD

San Luis Obispo County

Fri 10/24

7:50 pm-6:24 am

1 stop8h 34m

Chicago O'Hare Intl

Sun 11/2

5:00 am-6:01 pm

1 stop15h 01m

$269

San Luis ObispoChicago

SBP - ORD

SBPORD

San Luis Obispo County

Tue 11/18

12:57 pm-11:37 pm

2 stops8h 40m

Chicago O'Hare Intl

Sat 11/22

5:00 am-12:12 pm

1 stop9h 12m

$274

San Luis ObispoChicago

SBP - ORD

SBPORD

San Luis Obispo County

Sat 10/25

2:19 pm-11:59 pm

1 stop7h 40m

Chicago O'Hare Intl

Sun 11/2

5:00 am-6:01 pm

1 stop15h 01m

$296

San Luis ObispoChicago

SBP - ORD

SBPORD

San Luis Obispo County

Fri 10/24

7:50 pm-6:24 am

1 stop8h 34m

Chicago O'Hare Intl

Sun 11/2

5:00 am-10:26 pm

2 stops19h 26m

$298

San Luis ObispoChicago

SBP - ORD

SBPORD

San Luis Obispo County

Mon 10/6

7:50 pm-6:24 am

1 stop8h 34m

Chicago O'Hare Intl

Thu 10/9

7:59 pm-11:24 pm

1 stop29h 25m

$311

San Luis ObispoChicago

SBP - ORD

SBPORD

San Luis Obispo County

Sat 10/25

12:38 pm-11:42 pm

2 stops9h 04m

Chicago O'Hare Intl

Sun 11/2

8:30 am-3:36 pm

1 stop9h 06m

$319

San Luis ObispoChicago

SBP - ORD

SBPORD

San Luis Obispo County

Thu 10/2

10:55 am-9:24 pm

1 stop8h 29m

Chicago O'Hare Intl

Sun 10/5

7:20 am-11:43 pm

2 stops18h 23m

$451

San Luis ObispoChicago

SBP - ORD

SBPORD

San Luis Obispo County

Fri 9/5

6:29 pm-7:03 am

1 stop10h 34m

Chicago O'Hare Intl

Mon 9/8

7:55 am-4:17 pm

1 stop10h 22m

$485

San Luis ObispoChicago

SBP - ORD

SBPORD

San Luis Obispo County

Fri 9/5

3:45 pm-12:45 am

1 stop7h 00m

Chicago O'Hare Intl

Mon 9/8

6:25 pm-10:29 am

1 stop18h 04m

$573

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Illinois from

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

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 $339, 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 $375.

What is the cheapest day to depart on your flight to Illinois?

The cheapest day to depart from San Luis Obispo to Illinois is on a Thursday when prices can be found for as low as $545. Flights from San Luis Obispo to Illinois on a Friday will generally be more expensive and average around $752. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Illinois?

Our most recent data shows that the best time of day to fly to Illinois is in the evening. Flights from San Luis Obispo to Illinois during this time can be as low as $500. Flights in the morning are often more expensive with an average ticket price of $688.

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

Direct flights

None
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?

  • 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 AirlinesPriceFrom $274Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
United AirlinesPriceFrom $362Free CancellationRating
7.4
8,943 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.

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