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$191+ Cheap flights from San Luis Obispo (SBP) to Illinois

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 9/4. Fares are subject to change and may not be available on all flights or dates of travel.
SBP — ORD
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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Cheap flight deals from San Luis Obispo to Illinois

Keep the following information in mind while searching for San Luis Obispo to Illinois flight deals. Data was last updated June 12, 2025.

Round-trip from

$288
(Hawaiian Airlines)

One-way from

$191
(Alaska Airlines)

Popular in

March

Cheapest in

February

Average price

$556
From San Luis Obispo County to Illinois
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One-way flight from San Luis Obispo County to Illinois
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High demand for flights, 2% potential price rise
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Cheapest flight prices on average. 5% potential price decrease ($29 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Find flight deals from San Luis Obispo to Illinois

Cheapest flights from San Luis Obispo to Illinois
Explore the most affordable flight options available from San Luis Obispo to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.

This Hawaiian Airlines deal was found by Cheapflights users on 6/9. 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 8/137:35 pmSBP - ORD
1 stop8h 05mHawaiian Airlines
Tue 8/1910:00 amORD - SBP
1 stop10h 43mHawaiian Airlines
Deal found 6/9$288
This American Airlines deal was found by Cheapflights users on 6/12. 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.
Wed 8/2712:18 pmSBP - ORD
1 stop9h 25mAmerican Airlines
Sat 8/306:00 amORD - SBP
1 stop7h 25mAmerican Airlines
Deal found 6/12$289
This Alaska Airlines deal was found by Cheapflights users on 6/9. 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 8/133:45 pmSBP - ORD
2 stops11h 55mAlaska Airlines
Tue 8/198:42 pmORD - SBP
2 stops22h 01mAlaska Airlines
Deal found 6/9$305
This United Airlines deal was found by Cheapflights users on 6/11. 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 8/272:19 pmSBP - ORD
2 stops12h 18mUnited Airlines
Tue 9/25:00 amORD - SBP
2 stops12h 59mUnited Airlines
Deal found 6/11$512

Cheapflights Fare Finder

Customize your flight search to find flights from San Luis Obispo to Illinois 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 June 12, 2025.
Use the filters below to find and compare flights from San Luis Obispo to Illinois that are best for you.

Fly from

San Luis Obispo

Fly to

Illinois

Route

Depart

Return

Price

San Luis ObispoChicago

SBP - ORD

SBPORD

San Luis Obispo County

Wed 8/13

7:35 pm-5:40 am

1 stop8h 05m

Chicago O'Hare Intl

Tue 8/19

10:00 am-6:43 pm

1 stop10h 43m

$288

San Luis ObispoChicago

SBP - ORD

SBPORD

San Luis Obispo County

Wed 8/27

12:18 pm-11:43 pm

1 stop9h 25m

Chicago O'Hare Intl

Sat 8/30

6:00 am-11:25 am

1 stop7h 25m

$289

San Luis ObispoChicago

SBP - ORD

SBPORD

San Luis Obispo County

Wed 8/13

3:45 pm-5:40 am

2 stops11h 55m

Chicago O'Hare Intl

Tue 8/19

8:42 pm-4:43 pm

2 stops22h 01m

$305

San Luis ObispoChicago

SBP - ORD

SBPORD

San Luis Obispo County

Wed 8/27

2:19 pm-4:37 am

2 stops12h 18m

Chicago O'Hare Intl

Tue 9/2

5:00 am-3:59 pm

2 stops12h 59m

$512

San Luis ObispoChicago

SBP - ORD

SBPORD

San Luis Obispo County

Thu 9/4

5:23 pm-5:00 am

1 stop9h 37m

$191

San Luis ObispoChicago

SBP - ORD

SBPORD

San Luis Obispo County

Thu 9/4

12:53 pm-11:17 pm

2 stops8h 24m

$197

San Luis ObispoChicago

SBP - ORD

SBPORD

San Luis Obispo County

Thu 7/3

6:00 pm-1:09 pm

2 stops17h 09m

$294

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/12

Best time to book a flight from San Luis Obispo to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois from San Luis Obispo 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 San Luis Obispo to Illinois

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

Currently, August is the cheapest month in which you can book a flight from San Luis Obispo to Illinois (average of $245). Flying from San Luis Obispo to Illinois in March is currently the most expensive (average of $321). 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 SBP to IL?

Find hourly flight availability from San Luis Obispo to Illinois. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 12, 2025.

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

Rainfall in Illinois by month

Plan your trip to Illinois by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Illinois ranges from 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Illinois when rainfall is around 1.7 in.

Temperature in Illinois by month

Plan your trip to Illinois by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Illinois, 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 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

Reviews of airlines servicing Illinois

Get insights into the airlines that provide service to Illinois. 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 Illinois. Reviews last updated June 12, 2025.
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Boarding

8.1

Comfort

7.8

Food

7.1

Overall

8.0

Crew

8.5

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
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Boarding

8.1

Comfort

7.8

Food

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.9
Good
2,494 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Boarding

8.1

Comfort

7.8

Food

7.1

Overall

8.0

Crew

8.5

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
8,790 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Boarding

8.1

Comfort

7.8

Food

7.1

Overall

8.0

Crew

8.5

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
10,000 reviews

Entertainment

7.1

Boarding

8.1

Comfort

7.8

Food

7.1

Overall

8.0

Crew

8.5

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 San Luis Obispo to Illinois. 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 from for flights from San Luis Obispo to Illinois?

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

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

    The cheapest airlines for a one-way flight from San Luis Obispo to Illinois are Alaska Airlines ($191), American Airlines ($197), and United Airlines ($294).

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

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

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

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

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

    Yes. Cheapflights offers flight deals from San Luis Obispo to Illinois 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 San Luis Obispo to Illinois?

    Currently, August is the cheapest month in which you can book a flight from San Luis Obispo to Illinois (average of $245). Flying from San Luis Obispo to Illinois in March is currently the most expensive (average of $321). 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

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Top 2 airlines flying from San Luis Obispo to Illinois

Discover the top 2 airlines that operate flights from San Luis Obispo to Illinois. 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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$338Average$548FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$362Average$655FlexibilityNo cancel feeOn-time69%

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