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Cheap flights from Illinois to San Luis Obispo from $175

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to San Luis Obispo departing on 9/19. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Illinois to San Luis Obispo

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
8:40 am - 3:22 pm
ORD
-
SBP
8h 42m
1 stop
United Airlines Logo
5:00 am - 1:30 pm
SBP
-
ORD
6h 30m
1 stop
$344United Airlines
Wed, Aug 19 - Wed, Aug 26
United Airlines Logo
5:55 am - 10:11 am
ORD
-
SBP
6h 16m
1 stop
United Airlines Logo
2:20 pm - 12:59 am
SBP
-
ORD
8h 39m
1 stop
$349United Airlines
Mon, Aug 17 - Sun, Aug 23
United Airlines Logo
7:08 am - 12:02 pm
STL
-
SBP
6h 54m
1 stop
United Airlines Logo
8:00 am - 6:03 pm
SBP
-
STL
8h 03m
1 stop
$349United Airlines
Thu, Oct 22 - Tue, Oct 27
American Airlines Logo
5:00 am - 12:05 pm
ORD
-
SBP
9h 05m
1 stop
American Airlines Logo
12:51 pm - 12:18 am
SBP
-
ORD
9h 27m
2 stops
$354American Airlines
Mon, Aug 17 - Tue, Aug 25
United Airlines Logo
7:08 am - 12:02 pm
STL
-
SBP
6h 54m
1 stop
United Airlines Logo
10:48 am - 9:13 pm
SBP
-
STL
8h 25m
2 stops
$354United Airlines
Thu, Oct 22 - Tue, Oct 27
American Airlines Logo
5:00 am - 12:05 pm
ORD
-
SBP
9h 05m
1 stop
American Airlines Logo
1:00 pm - 11:43 pm
SBP
-
ORD
8h 43m
1 stop
$358American Airlines
Tue, Sep 8 - Tue, Sep 15
American Airlines Logo
5:00 am - 11:39 am
ORD
-
SBP
8h 39m
1 stop
American Airlines Logo
12:29 pm - 10:13 pm
SBP
-
ORD
7h 44m
1 stop
$359American Airlines
Mon, Aug 17 - Mon, Aug 24
Alaska Airlines Logo
7:20 am - 1:46 pm
ORD
-
SBP
8h 26m
1 stop
Alaska Airlines Logo
2:26 pm - 11:59 pm
SBP
-
ORD
7h 33m
1 stop
$384Alaska Airlines
Thu, Oct 8 - Mon, Oct 12
Alaska Airlines Logo
4:42 pm - 9:29 am
STL
-
SBP
18h 47m
1 stop
Alaska Airlines Logo
10:09 am - 11:59 pm
SBP
-
STL
11h 50m
1 stop
$440Alaska Airlines
Thu, Oct 22 - Tue, Oct 27
Alaska Airlines Logo
6:04 am - 4:47 pm
STL
-
SBP
12h 43m
2 stops
Alaska Airlines Logo
6:30 pm - 3:44 pm
SBP
-
STL
19h 14m
1 stop
$445Alaska Airlines
Mon, Oct 26 - Fri, Oct 30

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United Airlines flights from Illinois to San Luis Obispo

Our best United Airlines deals on Illinois to San Luis Obispo flight tickets
United Airlines
Aug 19
ORD8:40 amChicago O'Hare Intl
8h 42m
1 stop
SBP3:22 pmSan Luis Obispo County
Aug 26
SBP5:00 amSan Luis Obispo County
6h 30m
1 stop
ORD1:30 pmChicago O'Hare Intl
$344
United Airlines
Aug 17
ORD5:55 amChicago O'Hare Intl
6h 16m
1 stop
SBP10:11 amSan Luis Obispo County
Aug 23
SBP2:20 pmSan Luis Obispo County
8h 39m
1 stop
ORD12:59 amChicago O'Hare Intl
$349
United Airlines
Oct 22
STL7:08 amLambert-St Louis
6h 54m
1 stop
SBP12:02 pmSan Luis Obispo County
Oct 27
SBP10:48 amSan Luis Obispo County
8h 25m
2 stops
STL9:13 pmLambert-St Louis
$354

American Airlines flights from Illinois to San Luis Obispo

Our best American Airlines deals on Illinois to San Luis Obispo flight tickets
American Airlines
Aug 17
ORD5:00 amChicago O'Hare Intl
9h 05m
1 stop
SBP12:05 pmSan Luis Obispo County
Aug 25
SBP12:51 pmSan Luis Obispo County
9h 27m
2 stops
ORD12:18 amChicago O'Hare Intl
$354
American Airlines
Sep 8
ORD5:00 amChicago O'Hare Intl
9h 05m
1 stop
SBP12:05 pmSan Luis Obispo County
Sep 15
SBP1:00 pmSan Luis Obispo County
8h 43m
1 stop
ORD11:43 pmChicago O'Hare Intl
$358
American Airlines
Aug 17
ORD5:00 amChicago O'Hare Intl
8h 39m
1 stop
SBP11:39 amSan Luis Obispo County
Aug 24
SBP12:29 pmSan Luis Obispo County
7h 44m
1 stop
ORD10:13 pmChicago O'Hare Intl
$359

momondo Fare Finder

 
Customize your flight search to find flights from Illinois to San Luis Obispo 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 July 25, 2026.
Use the filters below to find and compare flights from Illinois to San Luis Obispo that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoSan Luis Obispo

ORD - SBP

ORDSBP

Chicago O'Hare Intl

Wed 8/19

8:40 am-3:22 pm

1 stop8h 42m

San Luis Obispo County

Wed 8/26

5:00 am-1:30 pm

1 stop6h 30m

$344
Quickest round-trip

ChicagoSan Luis Obispo

ORD - SBP

ORDSBP

Chicago O'Hare Intl

Mon 8/17

5:55 am-10:11 am

1 stop6h 16m

San Luis Obispo County

Sun 8/23

2:20 pm-12:59 am

1 stop8h 39m

$349

St. LouisSan Luis Obispo

STL - SBP

STLSBP

Lambert-St Louis

Thu 10/22

7:08 am-12:02 pm

1 stop6h 54m

San Luis Obispo County

Tue 10/27

8:00 am-6:03 pm

1 stop8h 03m

$349

ChicagoSan Luis Obispo

ORD - SBP

ORDSBP

Chicago O'Hare Intl

Mon 8/17

5:00 am-12:05 pm

1 stop9h 05m

San Luis Obispo County

Tue 8/25

12:51 pm-12:18 am

2 stops9h 27m

$354

St. LouisSan Luis Obispo

STL - SBP

STLSBP

Lambert-St Louis

Thu 10/22

7:08 am-12:02 pm

1 stop6h 54m

San Luis Obispo County

Tue 10/27

10:48 am-9:13 pm

2 stops8h 25m

$354

ChicagoSan Luis Obispo

ORD - SBP

ORDSBP

Chicago O'Hare Intl

Tue 9/8

5:00 am-12:05 pm

1 stop9h 05m

San Luis Obispo County

Tue 9/15

1:00 pm-11:43 pm

1 stop8h 43m

$358

ChicagoSan Luis Obispo

ORD - SBP

ORDSBP

Chicago O'Hare Intl

Mon 8/17

5:00 am-11:39 am

1 stop8h 39m

San Luis Obispo County

Mon 8/24

12:29 pm-10:13 pm

1 stop7h 44m

$359

ChicagoSan Luis Obispo

ORD - SBP

ORDSBP

Chicago O'Hare Intl

Thu 10/8

7:20 am-1:46 pm

1 stop8h 26m

San Luis Obispo County

Mon 10/12

2:26 pm-11:59 pm

1 stop7h 33m

$384

St. LouisSan Luis Obispo

STL - SBP

STLSBP

Lambert-St Louis

Thu 10/22

4:42 pm-9:29 am

1 stop18h 47m

San Luis Obispo County

Tue 10/27

10:09 am-11:59 pm

1 stop11h 50m

$440

St. LouisSan Luis Obispo

STL - SBP

STLSBP

Lambert-St Louis

Mon 10/26

6:04 am-4:47 pm

2 stops12h 43m

San Luis Obispo County

Fri 10/30

6:30 pm-3:44 pm

1 stop19h 14m

$445

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 San Luis Obispo from

How to get the cheapest flight ticket from Illinois to San Luis Obispo

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 San Luis Obispo?

In general, January is the cheapest month to fly from Illinois to San Luis Obispo. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $298. The month of February is another great option to travel to San Luis Obispo, with average flight prices from Illinois averaging around $359.

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

You could potentially save up to 35% on your flight if you consider stops on a Illinois to San Luis Obispo flight.

Cheap Illinois to San Luis Obispo flight deals and tips

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

Fastest flight time

6h 02m

Direct flights

None
The fastest flight from Illinois to San Luis Obispo takes 6h 02m
There are no direct flights from Illinois to San Luis Obispo. There are no popular flight routes from Illinois to San Luis Obispo.
Search flight deals

Frequently asked questions about flying from Illinois to San Luis Obispo

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

    Prices for flights from Illinois to San Luis Obispo County Airport were last updated today.

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

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

    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 Illinois to San Luis Obispo County Airport.

  • What documentation or ID do you need to fly to San Luis Obispo County Airport?

    The required travel and health documents for your San Luis Obispo County Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at San Luis Obispo County Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from Illinois to San Luis Obispo

Compare and see reviews for airlines that fly from Illinois to San Luis Obispo with momondo
Airline
Rating
Free Cancellation
Price
Alaska AirlinesPriceFrom $246Free CancellationRating
7.9
12,716 reviews
Search Alaska Airlines flights
American AirlinesPriceFrom $268Free CancellationRating
7.1
11,845 reviews
Search American Airlines flights
United AirlinesPriceFrom $276Free CancellationRating
7.4
10,035 reviews
Search United Airlines flights

Traveling to a place near San Luis Obispo?

Book flights to San Luis Obispo if you plan to visit one of these locations
Pismo Beach
Morro Bay
Paso Robles
Cambria
San Simeon
Avila Beach
Arroyo Grande
Cayucos
Atascadero
Grover Beach

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to San Luis Obispo from Illinois.

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

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

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

momondo helps you find the best flight between Illinois and San Luis Obispo by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

Yes momondo offers price alerts on flights to San Luis Obispo from Illinois. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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