$178+ 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 6/10. Fares are subject to change and may not be available on all flights or dates of travel.
Find cheap flights from San Luis Obispo to Illinois with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.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 May 1, 2025.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | eDreams 3 stars |
Round-trip from | $359 (American Airlines) |
One-way from | $178 (Alaska Airlines) |
Popular in | March |
Cheapest in | February |
Average price | $542 |
Find flight deals from San Luis Obispo to Illinois
Cheapest flights from San Luis Obispo to IllinoisExplore 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 May 1, 2025.
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 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.
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.
This United Airlines deal was found by Cheapflights users on 4/28. 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.
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.
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 May 1, 2025.
Use the filters below to find and compare flights from San Luis Obispo to Illinois that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
San Luis ObispoChicago
SBP - ORD
SBPORD
San Luis Obispo County
Wed 5/21
7:09 pm-5:13 am
1 stop8h 04m
Chicago O'Hare Intl
Tue 5/27
6:00 am-12:00 pm
1 stop8h 00m
San Luis ObispoChicago
SBP - ORD
SBPORD
San Luis Obispo County
Fri 5/23
7:35 pm-11:59 pm
1 stop26h 24m
Chicago O'Hare Intl
Tue 5/27
5:58 pm-6:40 pm
1 stop26h 42m
San Luis ObispoChicago
SBP - ORD
SBPORD
San Luis Obispo County
Thu 5/22
6:00 am-4:56 pm
1 stop8h 56m
Chicago O'Hare Intl
Tue 5/27
7:40 pm-11:59 pm
1 stop6h 19m
San Luis ObispoPeoria
SBP - PIA
SBPPIA
San Luis Obispo County
Thu 5/15
5:00 am-9:33 pm
2 stops14h 33m
Greater Peoria
Mon 5/19
5:25 pm-1:26 pm
2 stops22h 01m
San Luis ObispoChicago
SBP - ORD
SBPORD
San Luis Obispo County
Mon 6/30
4:35 pm-12:32 am
1 stop5h 57m
San Luis ObispoChicago
SBP - ORD
SBPORD
San Luis Obispo County
Wed 5/7
6:05 am-6:20 pm
2 stops10h 15m
San Luis ObispoChicago
SBP - ORD
SBPORD
San Luis Obispo County
Wed 5/7
7:14 pm-6:05 am
1 stop8h 51m
San Luis ObispoChicago
SBP - ORD
SBPORD
San Luis Obispo County
Fri 10/10
2:19 pm-12:47 am
1 stop8h 28m
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.
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 May 1, 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 May 1, 2025.
Get a feel of what it's like to fly with Alaska Airlines, Hawaiian Airlines and United Airlines from San Luis Obispo to Illinois 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.
Boarding
Comfort
Food
Entertainment
Crew
Overall
Reviews
James,Apr 2025
LAX - SFO
Boarding
Comfort
Food
Entertainment
Crew
Overall
Reviews
James,Apr 2025
LAX - SFO
Boarding
Comfort
Food
Entertainment
Crew
Overall
Reviews
James,Apr 2025
LAX - SFO
Boarding
Comfort
Food
Entertainment
Crew
Overall
Reviews
James,Apr 2025
LAX - SFO
Boarding
Comfort
Food
Entertainment
Crew
Overall
Reviews
James,Apr 2025
LAX - SFO
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.
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Alternative routes for San Luis Obispo to Illinois
See prices for flight routes from nearby airports that may be better suited for you.
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 May 1, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$338 | Average$551 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$362 | Average$646 | FlexibilityNo cancel fee | On-time69% |