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San Luis Obispo

$139+ Cheap flights from Illinois to San Luis Obispo (SBP)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/28. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SBP
dic. 20 — dic. 271
sáb. 12/20
sáb. 12/27
1 adult, Economy
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Cheap flight deals from Illinois to San Luis Obispo

Keep the following information in mind while searching for Illinois to San Luis Obispo flight deals. Data was last updated noviembre 20, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$258
(Hawaiian Airlines)

One-way from

$139
(American Airlines)

Popular in

February

Cheapest in

December

Average price

$590
Provider with most accurate pricing for Chicago (CHI)-San Luis Obispo County flight deals.
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Provider most trusted by Cheapflights users for Chicago (CHI)-San Luis Obispo County flights.
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From Illinois to San Luis Obispo County
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One-way flight from Illinois to San Luis Obispo County
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Highest demand for flights based on searches. 10% potential increase in price ($63 potential increase over avg. RT price).
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Cheapest flight prices on average. 6% potential price decrease ($33 potential savings vs. average RT price).
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Average for round-trip flights in November 2025
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Find flight deals from Illinois to San Luis Obispo

Cheapest flights from Illinois to San Luis Obispo
Explore the most affordable flight options available from Illinois to San Luis Obispo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on noviembre 20, 2025.

This American Airlines deal was found by Cheapflights users on 11/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/95:00 amORD - SBP
1 stop6h 06mAmerican Airlines
mié. 12/104:18 pmSBP - ORD
1 stop6h 13mAmerican Airlines
Deal found 11/18$279
This American Airlines deal was found by Cheapflights users on 11/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/911:00 amORD - SBP
1 stop6h 36mAmerican Airlines
jue. 12/114:18 pmSBP - ORD
1 stop6h 13mAmerican Airlines
Deal found 11/18$289
This American Airlines deal was found by Cheapflights users on 11/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/117:02 amORD - SBP
1 stop7h 21mAmerican Airlines
lun. 12/1512:28 pmSBP - ORD
1 stop7h 50mAmerican Airlines
Deal found 11/19$298
This American Airlines deal was found by Cheapflights users on 11/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 12/131:35 pmORD - SBP
1 stop6h 53mAmerican Airlines
sáb. 12/206:54 pmSBP - ORD
1 stop8h 40mAmerican Airlines
Deal found 11/19$309
This American Airlines deal was found by Cheapflights users on 11/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 12/205:00 amORD - SBP
1 stop6h 23mAmerican Airlines
dom. 1/47:07 pmSBP - ORD
1 stop8h 27mAmerican Airlines
Deal found 11/18$410
This Alaska Airlines deal was found by Cheapflights users on 11/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 12/198:39 amORD - SBP
1 stop16h 56mAlaska Airlines
dom. 1/47:45 pmSBP - ORD
2 stops19h 27mAlaska Airlines
Deal found 11/18$424
This American Airlines deal was found by Cheapflights users on 11/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/108:50 amORD - SBP
2 stops8h 46mAmerican Airlines
jue. 12/111:08 pmSBP - ORD
1 stop5h 53mAmerican Airlines
Deal found 11/18$429
This Alaska Airlines deal was found by Cheapflights users on 11/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 12/208:58 pmORD - SBP
1 stop28h 37mAlaska Airlines
dom. 1/47:45 pmSBP - ORD
2 stops19h 27mAlaska Airlines
Deal found 11/18$439
This American Airlines deal was found by Cheapflights users on 11/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/43:16 pmCMI - SBP
2 stops8h 57mAmerican Airlines
sáb. 12/612:28 pmSBP - CMI
1 stop5h 59mAmerican Airlines
Deal found 11/19$569
This United Airlines deal was found by Cheapflights users on 11/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/34:37 pmSTL - SBP
1 stop6h 35mUnited Airlines
dom. 12/71:05 pmSBP - STL
1 stop5h 52mUnited Airlines
Deal found 11/18$591
This American Airlines deal was found by Cheapflights users on 11/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/36:52 amSTL - SBP
2 stops10h 44mAmerican Airlines
dom. 12/76:00 amSBP - STL
2 stops11h 30mAmerican Airlines
Deal found 11/18$601
This American Airlines deal was found by Cheapflights users on 11/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 12/611:15 amCMI - SBP
2 stops9h 13mAmerican Airlines
mar. 12/912:28 pmSBP - CMI
1 stop5h 59mAmerican Airlines
Deal found 11/18$612

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated noviembre 20, 2025.
Use the filters below to find and compare flights from Illinois to San Luis Obispo that are best for you.

Fly from

Illinois

Fly to

San Luis Obispo

Route

Depart

Return

Price

ChicagoSan Luis Obispo

ORD - SBP

ORDSBP

Chicago O'Hare Intl

sáb. 2/14

3:07 pm-11:17 pm

1 stop10h 10m

San Luis Obispo County

mié. 2/18

12:19 pm-11:59 pm

1 stop9h 40m

$258

ChicagoSan Luis Obispo

ORD - SBP

ORDSBP

Chicago O'Hare Intl

mar. 12/9

5:00 am-9:06 am

1 stop6h 06m

San Luis Obispo County

mié. 12/10

4:18 pm-12:31 am

1 stop6h 13m

$279

ChicagoSan Luis Obispo

ORD - SBP

ORDSBP

Chicago O'Hare Intl

vie. 3/6

8:20 am-11:17 pm

1 stop16h 57m

San Luis Obispo County

mié. 3/11

6:00 am-2:58 pm

1 stop6h 58m

$289

ChicagoSan Luis Obispo

ORD - SBP

ORDSBP

Chicago O'Hare Intl

mar. 12/9

11:00 am-3:36 pm

1 stop6h 36m

San Luis Obispo County

jue. 12/11

4:18 pm-12:31 am

1 stop6h 13m

$289

ChicagoSan Luis Obispo

ORD - SBP

ORDSBP

Chicago O'Hare Intl

lun. 1/12

3:44 pm-11:20 pm

1 stop9h 36m

San Luis Obispo County

sáb. 1/17

5:35 pm-1:10 pm

1 stop17h 35m

$289

ChicagoSan Luis Obispo

ORD - SBP

ORDSBP

Chicago O'Hare Intl

mié. 12/10

5:00 am-12:23 pm

1 stop9h 23m

San Luis Obispo County

jue. 12/11

7:11 pm-5:27 am

1 stop8h 16m

$289

ChicagoSan Luis Obispo

ORD - SBP

ORDSBP

Chicago O'Hare Intl

vie. 1/16

6:06 pm-5:37 pm

1 stop25h 31m

San Luis Obispo County

mié. 1/21

5:14 pm-2:29 pm

1 stop19h 15m

$289

ChicagoSan Luis Obispo

ORD - SBP

ORDSBP

Chicago O'Hare Intl

lun. 1/12

5:00 am-12:14 pm

1 stop9h 14m

San Luis Obispo County

sáb. 1/17

9:53 am-8:39 pm

2 stops8h 46m

$294

ChicagoSan Luis Obispo

ORD - SBP

ORDSBP

Chicago O'Hare Intl

jue. 12/11

5:00 am-9:06 am

1 stop6h 06m

San Luis Obispo County

lun. 12/15

1:08 pm-11:35 pm

2 stops8h 27m

$304

St. LouisSan Luis Obispo

STL - SBP

STLSBP

Lambert-St Louis

dom. 3/1

3:19 pm-6:53 pm

1 stop29h 34m

San Luis Obispo County

sáb. 3/7

7:33 pm-10:59 pm

1 stop25h 26m

$410

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/17

Showing 1-10 of 31 results
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Best time to book a flight from Illinois to San Luis Obispo

Have a flexible travel schedule? Discover the best time to fly to San Luis Obispo from Illinois with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Illinois to San Luis Obispo

What is the cheapest month to book a flight from Illinois to San Luis Obispo?

Currently, February is the cheapest month in which you can book a flight from Illinois to San Luis Obispo (average of $229). Flying from Illinois to San Luis Obispo in May is currently the most expensive (average of $340). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from IL to SBP?

Find hourly flight availability from Illinois to San Luis Obispo. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated noviembre 20, 2025.

It’s optimal to fly from Illinois to San Luis Obispo in the afternoon. By choosing this option you can save up to 24% on the cost of your flight, compared to a flight in the evening.

Related info for your journey

Find useful and relevant information for your journey from Illinois to San Luis Obispo. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to San Luis Obispo from Illinois?

    Most people fly into San Luis Obispo County (SBP) if they book a flight to San Luis Obispo from Illinois. County is conveniently located just 3.3 mi from San Luis Obispo’s city center.

  • How long is the flight from Illinois to San Luis Obispo?

    Departing from Illinois to San Luis Obispo will take you 6h 06m. Illinois and San Luis Obispo are separated by a distance of 1814 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines to fly from Illinois to San Luis Obispo one-way?

    The cheapest airline one-way is American Airlines, with whom users have recently found tickets for as low as $139. However, be on the lookout for offers from United Airlines and Alaska Airlines, as they are both options that can get you from Illinois to San Luis Obispo for a low price.

  • What are the most popular routes from Illinois to San Luis Obispo?

    Most travelers choose Chicago O'Hare Intl - San Luis Obispo County, Lambert-St Louis - San Luis Obispo County or Champaign University-Willard - San Luis Obispo County when deciding on the best route from Illinois to San Luis Obispo.

  • Can I find deals for flights from Illinois to San Luis Obispo that include hotel bookings?

    Yes. In addition to deals on Illinois to San Luis Obispo flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Illinois to San Luis Obispo?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Illinois to San Luis Obispo.

  • Can I find deals for business class flights from Illinois to San Luis Obispo?

    Yes. Cheapflights offers flight deals from Illinois to San Luis Obispo by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Illinois to San Luis Obispo?

    Currently, February is the cheapest month in which you can book a flight from Illinois to San Luis Obispo (average of $229). Flying from Illinois to San Luis Obispo in May is currently the most expensive (average of $340). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near San Luis Obispo?

Book flights to San Luis Obispo if you plan to visit one of these locations
Morro Bay
Arroyo Grande
Avila Beach
San Simeon

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Top 2 airlines flying from Illinois to San Luis Obispo

Discover the top 2 airlines that operate flights from Illinois to San Luis Obispo. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated noviembre 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$268Average$489FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$276Average$544FlexibilityNo cancel feeOn-time69%

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