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San Luis Obispo

$180+ 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 6/14. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SBP
May 6 — May 131
Tue 5/6
Tue 5/13
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 May 1, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$359
(American Airlines)

One-way from

$180
(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. 9% potential increase in price ($59 potential increase over avg. RT price).
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Cheapest flight prices on average. 6% potential price decrease ($34 potential savings vs. average RT price).
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Average for round-trip flights in May 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 May 1, 2025.

This American Airlines deal was found by Cheapflights users on 4/30. 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.
Sun 6/87:20 amSTL - SBP
1 stop6h 07mAmerican Airlines
Thu 6/1212:17 pmSBP - STL
1 stop8h 43mAmerican Airlines
Deal found 4/30$359
This American Airlines deal was found by Cheapflights users on 4/30. 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.
Sat 6/144:45 pmORD - SBP
1 stop7h 50mAmerican Airlines
Sat 6/216:00 amSBP - ORD
1 stop6h 14mAmerican Airlines
Deal found 4/30$369
This Alaska Airlines deal was found by Cheapflights users on 4/29. 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.
Wed 5/76:58 pmORD - SBP
2 stops20h 54mAlaska Airlines
Mon 5/127:14 pmSBP - ORD
1 stop8h 51mAlaska Airlines
Deal found 4/29$442
This United Airlines deal was found by Cheapflights users on 4/29. 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.
Thu 5/155:20 amSTL - SBP
2 stops8h 25mUnited Airlines
Mon 5/192:45 pmSBP - STL
1 stop6h 00mUnited Airlines
Deal found 4/29$462
This Hawaiian Airlines deal was found by Cheapflights users on 4/29. 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.
Wed 5/712:00 pmORD - SBP
1 stop8h 22mHawaiian Airlines
Mon 5/127:14 pmSBP - ORD
1 stop8h 51mHawaiian Airlines
Deal found 4/29$466
This United Airlines deal was found by Cheapflights users on 4/30. 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.
Wed 6/44:40 pmORD - SBP
1 stop8h 56mUnited Airlines
Sun 6/85:55 pmSBP - ORD
1 stop9h 09mUnited Airlines
Deal found 4/30$476
This Alaska Airlines deal was found by Cheapflights users on 5/1. 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.
Sat 9/136:30 pmSTL - SBP
1 stop25h 07mAlaska Airlines
Sun 9/216:29 pmSBP - STL
1 stop27h 30mAlaska Airlines
Deal found 5/1$476
This United deal was found by Cheapflights users on 4/30. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/217:40 pmORD - SBP
1 stop6h 19mMultiple Airlines
Thu 7/247:35 pmSBP - ORD
1 stop8h 05mMultiple Airlines
Deal found 4/30$689

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 May 1, 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

St. LouisSan Luis Obispo

STL - SBP

STLSBP

Lambert-St Louis

Sun 6/8

7:20 am-11:27 am

1 stop6h 07m

San Luis Obispo County

Thu 6/12

12:17 pm-11:00 pm

1 stop8h 43m

$359

ChicagoSan Luis Obispo

ORD - SBP

ORDSBP

Chicago O'Hare Intl

Sat 6/14

4:45 pm-10:35 pm

1 stop7h 50m

San Luis Obispo County

Sat 6/21

6:00 am-2:14 pm

1 stop6h 14m

$369

ChicagoSan Luis Obispo

ORD - SBP

ORDSBP

Chicago O'Hare Intl

Thu 8/14

7:18 pm-8:30 pm

2 stops27h 12m

San Luis Obispo County

Mon 8/18

3:45 pm-7:42 pm

2 stops25h 57m

$447

St. LouisSan Luis Obispo

STL - SBP

STLSBP

Lambert-St Louis

Thu 5/15

5:20 am-11:45 am

2 stops8h 25m

San Luis Obispo County

Mon 5/19

2:45 pm-10:45 pm

1 stop6h 00m

$462

ChicagoSan Luis Obispo

ORD - SBP

ORDSBP

Chicago O'Hare Intl

Wed 6/4

4:40 pm-11:36 pm

1 stop8h 56m

San Luis Obispo County

Sun 6/8

5:55 pm-5:04 am

1 stop9h 09m

$476

St. LouisSan Luis Obispo

STL - SBP

STLSBP

Lambert-St Louis

Sat 9/13

6:30 pm-5:37 pm

1 stop25h 07m

San Luis Obispo County

Sun 9/21

6:29 pm-11:59 pm

1 stop27h 30m

$476

ChicagoSan Luis Obispo

ORD - SBP

ORDSBP

Chicago O'Hare Intl

Mon 7/21

7:40 pm-11:59 pm

1 stop6h 19m

San Luis Obispo County

Thu 7/24

7:35 pm-5:40 am

1 stop8h 05m

$689

ChicagoSan Luis Obispo

ORD - SBP

ORDSBP

Chicago O'Hare Intl

Sat 6/14

4:45 pm-10:35 pm

1 stop7h 50m

$180

ChicagoSan Luis Obispo

ORD - SBP

ORDSBP

Chicago O'Hare Intl

Mon 5/12

6:58 pm-1:52 pm

2 stops20h 54m

$263

ChicagoSan Luis Obispo

ORD - SBP

ORDSBP

Chicago O'Hare Intl

Thu 8/7

9:25 pm-7:59 pm

3 stops24h 34m

$446

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/1

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 $576). 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 May 1, 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 May 1, 2025.
Get a feel of what it's like to fly with Alaska Airlines, United Airlines and American 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
9,972 reviews

Boarding

8.1

Crew

8.5

Entertainment

7.1

Food

7.1

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
9,972 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Boarding

8.1

Crew

8.5

Entertainment

7.1

Food

7.1

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,696 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Boarding

8.1

Crew

8.5

Entertainment

7.1

Food

7.1

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Boarding

8.1

Crew

8.5

Entertainment

7.1

Food

7.1

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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 $180. 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 $576). 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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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 May 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$326Average$568FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$518Average$623FlexibilityNo cancel feeOn-time69%

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