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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 1/28. 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.
Hawaiian Airlines Logo
3:07 pm - 11:17 pmORD-SBP
10h 10m1 stop
Hawaiian Airlines Logo
12:19 pm - 11:59 pmSBP-ORD
9h 40m1 stop
$258Hawaiian Airlines
Find Deal
Sat, Feb 14 - Wed, Feb 18
Alaska Airlines Logo
8:20 am - 11:17 pmORD-SBP
16h 57m1 stop
Alaska Airlines Logo
6:00 am - 2:58 pmSBP-ORD
6h 58m1 stop
$289Alaska Airlines
Find Deal
Fri, Mar 6 - Wed, Mar 11
American Airlines Logo
7:02 am - 12:23 pmORD-SBP
7h 21m1 stop
American Airlines Logo
12:28 pm - 10:18 pmSBP-ORD
7h 50m1 stop
$298American Airlines
Find Deal
Thu, Dec 11 - Mon, Dec 15
American Airlines Logo
7:02 am - 12:23 pmORD-SBP
7h 21m1 stop
American Airlines Logo
1:08 pm - 11:35 pmSBP-ORD
8h 27m2 stops
$304American Airlines
Find Deal
Thu, Dec 11 - Mon, Dec 15
American Airlines Logo
1:35 pm - 6:28 pmORD-SBP
6h 53m1 stop
American Airlines Logo
6:54 pm - 5:34 amSBP-ORD
8h 40m1 stop
$309American Airlines
Find Deal
Sat, Dec 13 - Sat, Dec 20
Alaska Airlines Logo
3:07 pm - 11:17 pmORD-SBP
10h 10m1 stop
Alaska Airlines Logo
6:00 am - 11:59 pmSBP-ORD
15h 59m1 stop
$320Alaska Airlines
Find Deal
Sat, Feb 14 - Sun, Feb 22
American Airlines Logo
8:11 am - 3:36 pmORD-SBP
9h 25m2 stops
American Airlines Logo
4:30 pm - 12:16 amSBP-ORD
5h 46m1 stop
$346American Airlines
Find Deal
Sat, Dec 13 - Sat, Dec 20
Alaska Airlines Logo
8:00 am - 5:37 pmORD-SBP
11h 37m1 stop
Alaska Airlines Logo
5:14 pm - 5:10 pmSBP-ORD
21h 56m2 stops
$347Alaska Airlines
Find Deal
Sat, Jan 17 - Mon, Jan 19
United Airlines Logo
2:05 pm - 9:03 pmORD-SBP
8h 58m1 stop
United Airlines Logo
2:10 pm - 11:38 pmSBP-ORD
7h 28m1 stop
$353United Airlines
Find Deal
Fri, Mar 6 - Wed, Mar 11
American Airlines Logo
5:05 am - 12:17 pmORD-SBP
9h 12m1 stop
American Airlines Logo
6:00 am - 2:16 pmSBP-ORD
6h 16m1 stop
$369American Airlines
Find Deal
Sat, Jan 17 - Mon, Jan 19

American Airlines flights from Illinois to San Luis Obispo

Our best American Airlines deals on Illinois to San Luis Obispo flight tickets
American Airlines
Dec 11
ORD7:02 amChicago O'Hare Intl
7h 21m
1 stop
SBP12:23 pmSan Luis Obispo County
Dec 15
SBP12:28 pmSan Luis Obispo County
7h 50m
1 stop
ORD10:18 pmChicago O'Hare Intl
$298
Find similar
American Airlines
Dec 11
ORD7:02 amChicago O'Hare Intl
7h 21m
1 stop
SBP12:23 pmSan Luis Obispo County
Dec 15
SBP1:08 pmSan Luis Obispo County
8h 27m
2 stops
ORD11:35 pmChicago O'Hare Intl
$304
Find similar
American Airlines
Dec 13
ORD1:35 pmChicago O'Hare Intl
6h 53m
1 stop
SBP6:28 pmSan Luis Obispo County
Dec 20
SBP6:54 pmSan Luis Obispo County
8h 40m
1 stop
ORD5:34 amChicago O'Hare Intl
$309
Find similar

Alaska Airlines flights from Illinois to San Luis Obispo

Our best Alaska Airlines deals on Illinois to San Luis Obispo flight tickets
Alaska Airlines
Mar 6
ORD8:20 amChicago O'Hare Intl
16h 57m
1 stop
SBP11:17 pmSan Luis Obispo County
Mar 11
SBP6:00 amSan Luis Obispo County
6h 58m
1 stop
ORD2:58 pmChicago O'Hare Intl
$289
Find similar
Alaska Airlines
Feb 14
ORD3:07 pmChicago O'Hare Intl
10h 10m
1 stop
SBP11:17 pmSan Luis Obispo County
Feb 22
SBP6:00 amSan Luis Obispo County
15h 59m
1 stop
ORD11:59 pmChicago O'Hare Intl
$320
Find similar
Alaska Airlines
Jan 17
ORD8:00 amChicago O'Hare Intl
11h 37m
1 stop
SBP5:37 pmSan Luis Obispo County
Jan 19
SBP5:14 pmSan Luis Obispo County
21h 56m
2 stops
ORD5:10 pmChicago O'Hare Intl
$347
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 November 21, 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 2/14

3:07 pm-11:17 pm

1 stop10h 10m

San Luis Obispo County

Wed 2/18

12:19 pm-11:59 pm

1 stop9h 40m

$258

ChicagoSan Luis Obispo

ORD - SBP

ORDSBP

Chicago O'Hare Intl

Fri 3/6

8:20 am-11:17 pm

1 stop16h 57m

San Luis Obispo County

Wed 3/11

6:00 am-2:58 pm

1 stop6h 58m

$289

ChicagoSan Luis Obispo

ORD - SBP

ORDSBP

Chicago O'Hare Intl

Thu 12/11

7:02 am-12:23 pm

1 stop7h 21m

San Luis Obispo County

Mon 12/15

12:28 pm-10:18 pm

1 stop7h 50m

$298

ChicagoSan Luis Obispo

ORD - SBP

ORDSBP

Chicago O'Hare Intl

Thu 12/11

7:02 am-12:23 pm

1 stop7h 21m

San Luis Obispo County

Mon 12/15

1:08 pm-11:35 pm

2 stops8h 27m

$304

ChicagoSan Luis Obispo

ORD - SBP

ORDSBP

Chicago O'Hare Intl

Sat 12/13

1:35 pm-6:28 pm

1 stop6h 53m

San Luis Obispo County

Sat 12/20

6:54 pm-5:34 am

1 stop8h 40m

$309

ChicagoSan Luis Obispo

ORD - SBP

ORDSBP

Chicago O'Hare Intl

Sat 2/14

3:07 pm-11:17 pm

1 stop10h 10m

San Luis Obispo County

Sun 2/22

6:00 am-11:59 pm

1 stop15h 59m

$320

ChicagoSan Luis Obispo

ORD - SBP

ORDSBP

Chicago O'Hare Intl

Sat 12/13

8:11 am-3:36 pm

2 stops9h 25m

San Luis Obispo County

Sat 12/20

4:30 pm-12:16 am

1 stop5h 46m

$346

ChicagoSan Luis Obispo

ORD - SBP

ORDSBP

Chicago O'Hare Intl

Sat 1/17

8:00 am-5:37 pm

1 stop11h 37m

San Luis Obispo County

Mon 1/19

5:14 pm-5:10 pm

2 stops21h 56m

$347

ChicagoSan Luis Obispo

ORD - SBP

ORDSBP

Chicago O'Hare Intl

Fri 3/6

2:05 pm-9:03 pm

1 stop8h 58m

San Luis Obispo County

Wed 3/11

2:10 pm-11:38 pm

1 stop7h 28m

$353

ChicagoSan Luis Obispo

ORD - SBP

ORDSBP

Chicago O'Hare Intl

Sat 1/17

5:05 am-12:17 pm

1 stop9h 12m

San Luis Obispo County

Mon 1/19

6:00 am-2:16 pm

1 stop6h 16m

$369

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, 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 $336. 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 50% 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
11,047 reviews
Search American Airlines flights
United AirlinesPriceFrom $276Free CancellationRating
7.4
9,028 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
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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