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Cheap flights from Illinois to San Luis Obispo from $139

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 10/31. 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
0 bags

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Find the cheapest flights from Illinois to San Luis Obispo

Cheap round-trip flights

Enter your travel dates to find the best prices.
Alaska Airlines Logo
8:55 am - 1:52 pmORD-SBP
6h 57m1 stop
Alaska Airlines Logo
7:51 pm - 6:21 amSBP-ORD
8h 30m1 stop
$257Alaska Airlines
Find Deal
Sat, Dec 6 - Wed, Dec 10
Alaska Airlines Logo
8:00 am - 4:38 pmORD-SBP
10h 38m2 stops
Alaska Airlines Logo
2:52 pm - 11:50 pmSBP-ORD
6h 58m1 stop
$275Alaska Airlines
Find Deal
Sat, Dec 6 - Wed, Dec 10
American Airlines Logo
5:00 am - 9:14 amORD-SBP
6h 14m1 stop
American Airlines Logo
4:18 pm - 12:12 amSBP-ORD
5h 54m1 stop
$277American Airlines
Find Deal
Wed, Nov 5 - Mon, Nov 10
American Airlines Logo
1:35 pm - 6:28 pmORD-SBP
6h 53m1 stop
American Airlines Logo
1:08 pm - 11:35 pmSBP-ORD
8h 27m2 stops
$282American Airlines
Find Deal
Sat, Dec 6 - Wed, Dec 10
American Airlines Logo
12:03 pm - 6:27 pmORD-SBP
8h 24m2 stops
American Airlines Logo
12:57 pm - 11:37 pmSBP-ORD
8h 40m2 stops
$287American Airlines
Find Deal
Sat, Nov 1 - Sat, Nov 8
Alaska Airlines Logo
2:59 pm - 11:07 pmORD-SBP
10h 08m1 stop
Alaska Airlines Logo
2:30 pm - 1:04 pmSBP-ORD
20h 34m2 stops
$295Alaska Airlines
Find Deal
Sun, Feb 22 - Wed, Feb 25
Alaska Airlines Logo
6:00 am - 4:38 pmORD-SBP
12h 38m2 stops
Alaska Airlines Logo
3:12 pm - 11:50 pmSBP-ORD
6h 38m1 stop
$305Alaska Airlines
Find Deal
Thu, Dec 11 - Mon, Dec 15
United Airlines Logo
6:43 pm - 9:34 pmSTL-SBP
28h 51m2 stops
United Airlines Logo
5:15 am - 12:39 pmSBP-STL
5h 24m1 stop
$505United Airlines
Find Deal
Mon, Nov 3 - Mon, Nov 10
United Airlines Logo
5:29 pm - 10:05 pmSTL-SBP
6h 36m1 stop
United Airlines Logo
6:00 am - 4:27 pmSBP-STL
8h 27m1 stop
$507United Airlines
Find Deal
Mon, Nov 3 - Mon, Nov 10
Hawaiian Airlines Logo
9:00 am - 1:38 pmORD-SBP
6h 38m1 stop
Hawaiian Airlines Logo
2:30 pm - 11:10 pmSBP-ORD
6h 40m1 stop
$514Hawaiian Airlines
Find Deal
Tue, Mar 10 - Wed, Mar 11

Alaska Airlines flights from Illinois to San Luis Obispo

Our best Alaska Airlines deals on Illinois to San Luis Obispo flight tickets
Alaska Airlines
Dec 6
ORD8:55 amChicago O'Hare Intl
6h 57m
1 stop
SBP1:52 pmSan Luis Obispo County
Dec 10
SBP7:51 pmSan Luis Obispo County
8h 30m
1 stop
ORD6:21 amChicago O'Hare Intl
$257
Find similar
Alaska Airlines
Dec 6
ORD8:00 amChicago O'Hare Intl
10h 38m
2 stops
SBP4:38 pmSan Luis Obispo County
Dec 10
SBP2:52 pmSan Luis Obispo County
6h 58m
1 stop
ORD11:50 pmChicago O'Hare Intl
$275
Find similar
Alaska Airlines
Feb 22
ORD2:59 pmChicago O'Hare Intl
10h 08m
1 stop
SBP11:07 pmSan Luis Obispo County
Feb 25
SBP2:30 pmSan Luis Obispo County
20h 34m
2 stops
ORD1:04 pmChicago O'Hare Intl
$295
Find similar

American Airlines flights from Illinois to San Luis Obispo

Our best American Airlines deals on Illinois to San Luis Obispo flight tickets
American Airlines
Nov 5
ORD5:00 amChicago O'Hare Intl
6h 14m
1 stop
SBP9:14 amSan Luis Obispo County
Nov 10
SBP4:18 pmSan Luis Obispo County
5h 54m
1 stop
ORD12:12 amChicago O'Hare Intl
$277
Find similar
American Airlines
Dec 6
ORD1:35 pmChicago O'Hare Intl
6h 53m
1 stop
SBP6:28 pmSan Luis Obispo County
Dec 10
SBP1:08 pmSan Luis Obispo County
8h 27m
2 stops
ORD11:35 pmChicago O'Hare Intl
$282
Find similar
American Airlines
Nov 1
ORD12:03 pmChicago O'Hare Intl
8h 24m
2 stops
SBP6:27 pmSan Luis Obispo County
Nov 8
SBP12:57 pmSan Luis Obispo County
8h 40m
2 stops
ORD11:37 pmChicago O'Hare Intl
$287
Find similar

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 October 6, 2025.
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

ChicagoSan Luis Obispo

ORD - SBP

ORDSBP

Chicago O'Hare Intl

Sat 12/6

8:55 am-1:52 pm

1 stop6h 57m

San Luis Obispo County

Wed 12/10

7:51 pm-6:21 am

1 stop8h 30m

$257

ChicagoSan Luis Obispo

ORD - SBP

ORDSBP

Chicago O'Hare Intl

Sat 12/6

8:00 am-4:38 pm

2 stops10h 38m

San Luis Obispo County

Wed 12/10

2:52 pm-11:50 pm

1 stop6h 58m

$275

ChicagoSan Luis Obispo

ORD - SBP

ORDSBP

Chicago O'Hare Intl

Wed 11/5

5:00 am-9:14 am

1 stop6h 14m

San Luis Obispo County

Mon 11/10

4:18 pm-12:12 am

1 stop5h 54m

$277

ChicagoSan Luis Obispo

ORD - SBP

ORDSBP

Chicago O'Hare Intl

Sat 12/6

1:35 pm-6:28 pm

1 stop6h 53m

San Luis Obispo County

Wed 12/10

1:08 pm-11:35 pm

2 stops8h 27m

$282

ChicagoSan Luis Obispo

ORD - SBP

ORDSBP

Chicago O'Hare Intl

Sat 11/1

12:03 pm-6:27 pm

2 stops8h 24m

San Luis Obispo County

Sat 11/8

12:57 pm-11:37 pm

2 stops8h 40m

$287

ChicagoSan Luis Obispo

ORD - SBP

ORDSBP

Chicago O'Hare Intl

Sun 2/22

2:59 pm-11:07 pm

1 stop10h 08m

San Luis Obispo County

Wed 2/25

2:30 pm-1:04 pm

2 stops20h 34m

$295

ChicagoSan Luis Obispo

ORD - SBP

ORDSBP

Chicago O'Hare Intl

Thu 12/11

6:00 am-4:38 pm

2 stops12h 38m

San Luis Obispo County

Mon 12/15

3:12 pm-11:50 pm

1 stop6h 38m

$305

St. LouisSan Luis Obispo

STL - SBP

STLSBP

Lambert-St Louis

Mon 11/3

6:43 pm-9:34 pm

2 stops28h 51m

San Luis Obispo County

Mon 11/10

5:15 am-12:39 pm

1 stop5h 24m

$505

St. LouisSan Luis Obispo

STL - SBP

STLSBP

Lambert-St Louis

Mon 11/3

5:29 pm-10:05 pm

1 stop6h 36m

San Luis Obispo County

Mon 11/10

6:00 am-4:27 pm

1 stop8h 27m

$507

ChicagoSan Luis Obispo

ORD - SBP

ORDSBP

Chicago O'Hare Intl

Tue 3/10

9:00 am-1:38 pm

1 stop6h 38m

San Luis Obispo County

Wed 3/11

2:30 pm-11:10 pm

1 stop6h 40m

$514

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 18 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, December 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 $242. The month of January is another great option to travel to San Luis Obispo, with average flight prices from Illinois averaging around $422.

What is the cheapest day to depart on your flight to San Luis Obispo?

On average, the least expensive day to fly to San Luis Obispo from Illinois is on a Saturday. momondo users have found tickets for Saturday departures for as low as $452. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Illinois to San Luis Obispo for around $693.

What is the cheapest time of day to depart on your flight to San Luis Obispo?

Flying to San Luis Obispo from Illinois in the morning is the least expensive time of day to depart. momondo users have found prices as low as $563 when looking at flights departing in the morning. If you have a flexible travel schedule, then try to avoid flying in the evening when prices are $693 on average. Flights to San Luis Obispo from Illinois in the evening are generally more expensive because this time of day is more convenient for travelers’ schedules.

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

You could potentially save up to 52% 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

Direct flights

None
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

  • 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
American AirlinesPriceFrom $268Free CancellationRating
7.2
11,040 reviews
Search American Airlines flights
United AirlinesPriceFrom $276Free CancellationRating
7.4
8,957 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
Cambria
Paso Robles
Avila Beach
San Simeon
Cayucos
Arroyo Grande
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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