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San Luis Obispo

$190+ 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 5/11. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SBP
Apr 2 — Apr 91
Wed 4/2
Wed 4/9
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 March 28, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$359
(United Airlines)

One-way from

$190
(American Airlines)

Popular in

February

Cheapest in

December

Average price

$718
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. 15% potential increase in price ($110 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 March 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 March 28, 2025.

This United Airlines deal was found by Cheapflights users on 3/27. 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.
Tue 5/276:30 amORD - SBP
1 stop7h 26mUnited Airlines
Sat 5/316:00 amSBP - ORD
1 stop8h 56mUnited Airlines
Deal found 3/27$359
This American Airlines deal was found by Cheapflights users on 3/27. 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.
Tue 5/276:00 amORD - SBP
1 stop7h 32mAmerican Airlines
Sat 5/3112:43 pmSBP - ORD
2 stops9h 13mAmerican Airlines
Deal found 3/27$364
This Alaska Airlines deal was found by Cheapflights users on 3/27. 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.
Fri 5/307:59 pmORD - SBP
2 stops19h 26mAlaska Airlines
Tue 6/36:10 amSBP - ORD
2 stops15h 49mAlaska Airlines
Deal found 3/27$380
This American Airlines deal was found by Cheapflights users on 3/27. 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.
Thu 4/246:20 pmSTL - SBP
1 stop5h 57mAmerican Airlines
Thu 5/14:30 pmSBP - STL
1 stop5h 20mAmerican Airlines
Deal found 3/27$403
This Hawaiian Airlines deal was found by Cheapflights users on 3/27. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1910:00 amORD - SBP
1 stop10h 43mHawaiian Airlines
Sun 8/245:23 pmSBP - ORD
1 stop9h 41mHawaiian Airlines
Deal found 3/27$460
This United Airlines deal was found by Cheapflights users on 3/27. 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.
Fri 5/305:27 pmSTL - SBP
2 stops8h 32mUnited Airlines
Fri 6/68:30 amSBP - STL
1 stop7h 30mUnited Airlines
Deal found 3/27$484
This Alaska Airlines deal was found by Cheapflights users on 3/27. 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.
Fri 4/113:11 pmSTL - SBP
1 stop29h 28mAlaska Airlines
Tue 4/152:18 pmSBP - STL
2 stops31h 41mAlaska Airlines
Deal found 3/27$559

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 March 28, 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

Tue 5/27

6:30 am-11:56 am

1 stop7h 26m

San Luis Obispo County

Sat 5/31

6:00 am-4:56 pm

1 stop8h 56m

$359

ChicagoSan Luis Obispo

ORD - SBP

ORDSBP

Chicago O'Hare Intl

Tue 5/27

6:00 am-11:32 am

1 stop7h 32m

San Luis Obispo County

Sat 5/31

12:43 pm-11:56 pm

2 stops9h 13m

$364

ChicagoSan Luis Obispo

ORD - SBP

ORDSBP

Chicago O'Hare Intl

Fri 5/30

7:59 pm-1:25 pm

2 stops19h 26m

San Luis Obispo County

Tue 6/3

6:10 am-11:59 pm

2 stops15h 49m

$380

St. LouisSan Luis Obispo

STL - SBP

STLSBP

Lambert-St Louis

Thu 4/24

6:20 pm-10:17 pm

1 stop5h 57m

San Luis Obispo County

Thu 5/1

4:30 pm-11:50 pm

1 stop5h 20m

$403

ChicagoSan Luis Obispo

ORD - SBP

ORDSBP

Chicago O'Hare Intl

Tue 8/19

10:00 am-6:43 pm

1 stop10h 43m

San Luis Obispo County

Sun 8/24

5:23 pm-5:04 am

1 stop9h 41m

$460

St. LouisSan Luis Obispo

STL - SBP

STLSBP

Lambert-St Louis

Fri 5/30

5:27 pm-11:59 pm

2 stops8h 32m

San Luis Obispo County

Fri 6/6

8:30 am-6:00 pm

1 stop7h 30m

$484

St. LouisSan Luis Obispo

STL - SBP

STLSBP

Lambert-St Louis

Fri 4/11

3:11 pm-6:39 pm

1 stop29h 28m

San Luis Obispo County

Tue 4/15

2:18 pm-11:59 pm

2 stops31h 41m

$559

ChicagoSan Luis Obispo

ORD - SBP

ORDSBP

Chicago O'Hare Intl

Sun 5/11

5:00 am-11:32 am

1 stop8h 32m

$190

ChicagoSan Luis Obispo

ORD - SBP

ORDSBP

Chicago O'Hare Intl

Thu 4/10

3:16 pm-2:42 pm

2 stops25h 26m

$262

ChicagoSan Luis Obispo

ORD - SBP

ORDSBP

Chicago O'Hare Intl

Thu 4/10

9:15 pm-11:50 am

2 stops16h 35m

$599

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/27

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, January is the cheapest month in which you can book a flight from Illinois to San Luis Obispo (average of $374). Flying from Illinois to San Luis Obispo in June is currently the most expensive (average of $594). 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 March 28, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Illinois to San Luis Obispo as you normally would.

Rainfall in San Luis Obispo by month

Plan your trip to San Luis Obispo by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in San Luis Obispo ranges from 0.0 - 4.0 inches per month. December is typically the wettest month, when rainfall can reach 4.0 in. July is typically the driest time to visit San Luis Obispo when rainfall is around 0.0 in.

Temperature in San Luis Obispo by month

Plan your trip to San Luis Obispo by taking into account the average temperature totals by month.

If weather is an important factor for your trip to San Luis Obispo, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 66.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 51.8 F).

Reviews of airlines servicing San Luis Obispo

Get insights into the airlines that provide service to San Luis Obispo. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San Luis Obispo. Reviews last updated March 28, 2025.
Get a feel of what it's like to fly with Alaska Airlines, Hawaiian Airlines and United Airlines from Illinois to San Luis Obispo by reading reviews from past customers. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,798 reviews

Crew

8.5

Boarding

8.2

Overall

8.0

Food

7.1

Comfort

7.9

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot
Alaska Airlines
8.0
Very good
9,798 reviews
Alaska Airlines
8.0
Very good
9,798 reviews

Crew

8.5

Boarding

8.2

Overall

8.0

Food

7.1

Comfort

7.9

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot
Hawaiian Airlines
7.9
Good
2,336 reviews
Alaska Airlines
8.0
Very good
9,798 reviews

Crew

8.5

Boarding

8.2

Overall

8.0

Food

7.1

Comfort

7.9

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot
United Airlines
7.4
Good
8,603 reviews
Alaska Airlines
8.0
Very good
9,798 reviews

Crew

8.5

Boarding

8.2

Overall

8.0

Food

7.1

Comfort

7.9

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
9,798 reviews

Crew

8.5

Boarding

8.2

Overall

8.0

Food

7.1

Comfort

7.9

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot

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.

  • 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 $190. However, be on the lookout for offers from Alaska Airlines and United 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, January is the cheapest month in which you can book a flight from Illinois to San Luis Obispo (average of $374). Flying from Illinois to San Luis Obispo in June is currently the most expensive (average of $594). 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 Illinois?

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

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Alternative routes for Illinois to San Luis Obispo

See prices for flight routes from nearby airports that may be better suited for you.
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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 March 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$326Average$559FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$538Average$693FlexibilityNo cancel feeOn-time69%
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