$175+ 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 10/15. Fares are subject to change and may not be available on all flights or dates of travel.
SBP — ORD
Aug 22 — Aug 291
Round-trip
1 adult, Economy
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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 July 23, 2026.
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 July 23, 2026.
This American Airlines deal was found by Cheapflights users on 7/20. 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 8/2212:51 pm
SBP
- ORD
1 stop8h 39m
American Airlines
Fri 8/285:00 am
ORD
- SBP
1 stop9h 05m
American Airlines
Deal found 7/20![American Airlines logo]()
$348
This American Airlines deal was found by Cheapflights users on 7/19. 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.
Tue 9/112:29 pm
SBP
- ORD
1 stop7h 44m
American Airlines
Sat 9/55:00 am
ORD
- SBP
1 stop9h 05m
American Airlines
Deal found 7/19![American Airlines logo]()
$349
This American Airlines deal was found by Cheapflights users on 7/22. 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 9/1712:31 pm
SBP
- ORD
1 stop9h 43m
American Airlines
Tue 9/225:00 am
ORD
- SBP
2 stops9h 11m
American Airlines
Deal found 7/22![American Airlines logo]()
$364
This American Airlines deal was found by Cheapflights users on 7/20. 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 9/151:00 pm
SBP
- ORD
2 stops8h 30m
American Airlines
Tue 10/65:00 am
ORD
- SBP
2 stops9h 07m
American Airlines
Deal found 7/20![American Airlines logo]()
$379
This American Airlines deal was found by Cheapflights users on 7/22. 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 8/1212:45 pm
SBP
- ORD
2 stops9h 33m
American Airlines
Wed 8/195:00 am
ORD
- SBP
1 stop8h 39m
American Airlines
Deal found 7/22![American Airlines logo]()
$389
This United Airlines deal was found by Cheapflights users on 7/20. 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 9/38:33 pm
SBP
- ORD
1 stop8h 23m
United Airlines
Tue 9/85:52 pm
ORD
- SBP
1 stop6h 09m
United Airlines
Deal found 7/20![United Airlines logo]()
$398
This Orbitz deal was found by Cheapflights users on 7/21. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/56:00 am
SBP
- ORD
1 stop11h 00m
Alaska Airlines
Mon 11/97:25 am
ORD
- SBP
2 stops10h 36m
Alaska Airlines
Deal found 7/21![Alaska Airlines logo]()
$410
This Alaska Airlines deal was found by Cheapflights users on 7/21. 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.
Tue 8/45:35 pm
SBP
- ORD
1 stop9h 25m
Alaska Airlines
Fri 8/77:59 pm
ORD
- SBP
1 stop23h 18m
Alaska Airlines
Deal found 7/21![Alaska Airlines logo]()
$419
This Orbitz deal was found by Cheapflights users on 7/22. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/166:00 am
SBP
- ORD
2 stops15h 59m
Alaska Airlines
Fri 9/181:03 pm
ORD
- SBP
1 stop22h 35m
Alaska Airlines
Deal found 7/22![Alaska Airlines logo]()
$421
This United Airlines deal was found by Cheapflights users on 7/21. 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 9/241:02 pm
SBP
- PIA
1 stop5h 49m
United Airlines
Tue 9/298:45 am
PIA
- SBP
1 stop6h 34m
United Airlines
Deal found 7/21![United Airlines logo]()
$673
This United Airlines deal was found by Cheapflights users on 7/23. 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.
Sat 8/18:35 pm
SBP
- PIA
2 stops11h 34m
United Airlines
Sat 8/82:33 pm
PIA
- SBP
2 stops11h 11m
United Airlines
Deal found 7/23![United Airlines logo]()
$703
Best flights from San Luis Obispo to IllinoisDiscover carefully curated flight deals from San Luis Obispo to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 23, 2026.
Discover carefully curated flight deals from San Luis Obispo to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 23, 2026.
This Alaska Airlines deal was found by Cheapflights users on 7/18. 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.
Sat 11/142:27 pm
SBP
- ORD
1 stop7h 22m
Alaska Airlines
Wed 11/187:25 am
ORD
- SBP
1 stop8h 22m
Alaska Airlines
Deal found 7/18![Alaska Airlines logo]()
$349
This United Airlines deal was found by Cheapflights users on 7/19. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/252:15 pm
SBP
- ORD
1 stop8h 44m
United Airlines
Mon 9/286:00 am
ORD
- SBP
1 stop6h 07m
United Airlines
Deal found 7/19![United Airlines logo]()
$349
This American Airlines deal was found by Cheapflights users on 7/21. 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 11/512:36 pm
SBP
- ORD
1 stop9h 23m
American Airlines
Mon 11/95:00 am
ORD
- SBP
1 stop9h 02m
American Airlines
Deal found 7/21![American Airlines logo]()
$349
This American Airlines deal was found by Cheapflights users on 7/19. 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.
Tue 9/112:29 pm
SBP
- ORD
1 stop7h 44m
American Airlines
Sat 9/55:00 am
ORD
- SBP
1 stop9h 05m
American Airlines
Deal found 7/19![American Airlines logo]()
$349
This United Airlines deal was found by Cheapflights users on 7/22. 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 9/1612:55 pm
SBP
- ORD
1 stop6h 35m
United Airlines
Wed 9/237:00 am
ORD
- SBP
1 stop8h 24m
United Airlines
Deal found 7/22![United Airlines logo]()
$359
This American Airlines deal was found by Cheapflights users on 7/20. 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 9/221:00 pm
SBP
- ORD
1 stop7h 31m
American Airlines
Sat 9/266:00 am
ORD
- SBP
1 stop7h 41m
American Airlines
Deal found 7/20![American Airlines logo]()
$349
This American Airlines deal was found by Cheapflights users on 7/19. 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.
Wed 8/1212:45 pm
SBP
- ORD
1 stop7h 15m
American Airlines
Wed 8/195:00 am
ORD
- SBP
1 stop8h 39m
American Airlines
Deal found 7/19![American Airlines logo]()
$349
This United Airlines deal was found by Cheapflights users on 7/21. 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 9/241:02 pm
SBP
- PIA
1 stop5h 49m
United Airlines
Tue 9/298:45 am
PIA
- SBP
1 stop6h 34m
United Airlines
Deal found 7/21![United Airlines logo]()
$673
Last-minute flights from San Luis Obispo to IllinoisDiscover last-minute flight deals from San Luis Obispo to Illinois. Data last updated July 23, 2026 and is based on user searches.
Discover last-minute flight deals from San Luis Obispo to Illinois. Data last updated July 23, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 7/23. 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.
Sat 8/18:35 pm
SBP
- PIA
2 stops11h 34m
United Airlines
Sat 8/82:33 pm
PIA
- SBP
2 stops11h 11m
United Airlines
Deal found 7/23![United Airlines logo]()
$703
This American Airlines deal was found by Cheapflights users on 7/20. 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 8/27:02 pm
SBP
- ORD
1 stop9h 23m
American Airlines
Sun 8/165:00 am
ORD
- SBP
1 stop9h 05m
American Airlines
Deal found 7/20![American Airlines logo]()
$429
This American Airlines deal was found by Cheapflights users on 7/21. 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 8/212:29 pm
SBP
- ORD
1 stop9h 01m
American Airlines
Tue 8/255:00 am
ORD
- SBP
2 stops9h 05m
American Airlines
Deal found 7/21![American Airlines logo]()
$434
This Alaska Airlines deal was found by Cheapflights users on 7/21. 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.
Tue 8/45:35 pm
SBP
- ORD
1 stop9h 25m
Alaska Airlines
Fri 8/77:59 pm
ORD
- SBP
1 stop23h 18m
Alaska Airlines
Deal found 7/21![Alaska Airlines logo]()
$419
This American Airlines deal was found by Cheapflights users on 7/23. 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.
Fri 8/712:51 pm
SBP
- ORD
2 stops9h 27m
American Airlines
Tue 8/115:00 am
ORD
- SBP
2 stops9h 05m
American Airlines
Deal found 7/23![American Airlines logo]()
$439
This American Airlines deal was found by Cheapflights users on 7/19. 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.
Wed 8/1212:45 pm
SBP
- ORD
1 stop7h 15m
American Airlines
Wed 8/195:00 am
ORD
- SBP
1 stop8h 39m
American Airlines
Deal found 7/19![American Airlines logo]()
$349
This American Airlines deal was found by Cheapflights users on 7/20. 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 8/1212:45 pm
SBP
- ORD
2 stops9h 33m
American Airlines
Sat 8/155:00 am
ORD
- SBP
2 stops9h 05m
American Airlines
Deal found 7/20![American Airlines logo]()
$426
This American Airlines deal was found by Cheapflights users on 7/20. 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 8/2212:51 pm
SBP
- ORD
1 stop8h 39m
American Airlines
Fri 8/285:00 am
ORD
- SBP
1 stop9h 05m
American Airlines
Deal found 7/20![American Airlines logo]()
$348
One-way flights from San Luis Obispo to IllinoisSearch for one-way flight options from San Luis Obispo to Illinois. Find affordable one-way fares based on user searches. Data last updated July 23, 2026.
Search for one-way flight options from San Luis Obispo to Illinois. Find affordable one-way fares based on user searches. Data last updated July 23, 2026.
This Alaska Airlines deal was found by Cheapflights users on 7/20. 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.
Thu 10/152:26 pm
SBP
- ORD
1 stop7h 33m
Alaska Airlines
Deal found 7/20![Alaska Airlines logo]()
$175
This Alaska Airlines deal was found by Cheapflights users on 7/22. 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.
Thu 11/56:00 am
SBP
- ORD
1 stop11h 00m
Alaska Airlines
Deal found 7/22![Alaska Airlines logo]()
$180
This Alaska Airlines deal was found by Cheapflights users on 7/22. 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.
Mon 8/175:57 pm
SBP
- ORD
1 stop17h 24m
Alaska Airlines
Deal found 7/22![Alaska Airlines logo]()
$185
This United Airlines deal was found by Cheapflights users on 7/21. 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.
Sun 9/65:00 am
SBP
- ORD
1 stop6h 29m
United Airlines
Deal found 7/21![United Airlines logo]()
$189
This Priceline deal was found by Cheapflights users on 7/21. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/37:34 pm
SBP
- ORD
1 stop8h 46m
Alaska Airlines
Deal found 7/21![Alaska Airlines logo]()
$255
This Alaska Airlines deal was found by Cheapflights users on 7/20. 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.
Mon 8/246:00 am
SBP
- ORD
1 stop29h 22m
Alaska Airlines
Deal found 7/20![Alaska Airlines logo]()
$282
This Booking.com deal was found by Cheapflights users on 7/22. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/93:26 pm
SBP
- ORD
2 stops25h 27m
Alaska Airlines
Deal found 7/22![Alaska Airlines logo]()
$302
Find 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 July 23, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $348 (American Airlines) |
One-way from | $175 (Alaska Airlines) |
Popular in | October |
Cheapest in | August |
Average price | $569 |
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 July 23, 2026.
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
Cheapest round-trip
San Luis ObispoChicago
SBP - ORD
SBPORD
San Luis Obispo County
Sat 11/14
2:27 pm-11:49 pm
1 stop7h 22m
Chicago O'Hare Intl
Wed 11/18
7:25 am-1:47 pm
1 stop8h 22m
$349
San Luis ObispoChicago
SBP - ORD
SBPORD
San Luis Obispo County
Fri 9/25
2:15 pm-12:59 am
1 stop8h 44m
Chicago O'Hare Intl
Mon 9/28
6:00 am-10:07 am
1 stop6h 07m
$349
San Luis ObispoChicago
SBP - ORD
SBPORD
San Luis Obispo County
Thu 11/5
12:36 pm-11:59 pm
1 stop9h 23m
Chicago O'Hare Intl
Mon 11/9
5:00 am-12:02 pm
1 stop9h 02m
$349
San Luis ObispoChicago
SBP - ORD
SBPORD
San Luis Obispo County
Tue 9/1
12:29 pm-10:13 pm
1 stop7h 44m
Chicago O'Hare Intl
Sat 9/5
5:00 am-12:05 pm
1 stop9h 05m
$349
San Luis ObispoChicago
SBP - ORD
SBPORD
San Luis Obispo County
Tue 9/22
1:00 pm-10:31 pm
1 stop7h 31m
Chicago O'Hare Intl
Sat 9/26
6:00 am-11:41 am
1 stop7h 41m
$349
San Luis ObispoChicago
SBP - ORD
SBPORD
San Luis Obispo County
Wed 8/12
12:45 pm-10:00 pm
1 stop7h 15m
Chicago O'Hare Intl
Wed 8/19
5:00 am-11:39 am
1 stop8h 39m
$349
San Luis ObispoChicago
SBP - ORD
SBPORD
San Luis Obispo County
Wed 9/16
12:55 pm-9:30 pm
1 stop6h 35m
Chicago O'Hare Intl
Wed 9/23
7:00 am-1:24 pm
1 stop8h 24m
$359
Quickest round-trip
San Luis ObispoPeoria
SBP - PIA
SBPPIA
San Luis Obispo County
Thu 9/24
1:02 pm-8:51 pm
1 stop5h 49m
Greater Peoria
Tue 9/29
8:45 am-1:19 pm
1 stop6h 34m
$673
Cheapest one-way
San Luis ObispoChicago
SBP - ORD
SBPORD
San Luis Obispo County
Mon 8/24
6:00 am-7:21 pm
1 stop11h 21m
$180
San Luis ObispoChicago
SBP - ORD
SBPORD
San Luis Obispo County
Thu 11/5
6:00 am-7:00 pm
1 stop11h 00m
$180
Showing 1-10 of 13 resultsSorted by cheapest first
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.
SBP-ORD
SBP-PIA
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
SBP-USIL
SBP-ORD
SBP-PIA
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 $310). Flying from San Luis Obispo to Illinois in July is currently the most expensive (average of $729). 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 July 23, 2026.
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.
How much does it cost to fly round-trip from San Luis Obispo to Illinois?
Airfare is below average for this route at the moment.
San Luis Obispo to Illinois flights typically cost between $412 and $709 in August.The cheapest round-trip price found within the last 5 days was $348 on American Airlines (Aug 22-Aug 28).
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 July 23, 2026.
Read reviews from past customers who have flown Alaska Airlines,United Airlines, andAmerican Airlines from San Luis Obispo to Illinois. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Overall
7.9
Comfort
7.8
Entertainment
7.0
Food
7.1
Boarding
8.1
Crew
8.5
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Overall
7.9
Comfort
7.8
Entertainment
7.0
Food
7.1
Boarding
8.1
Crew
8.5
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Overall
7.9
Comfort
7.8
Entertainment
7.0
Food
7.1
Boarding
8.1
Crew
8.5
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Overall
7.9
Comfort
7.8
Entertainment
7.0
Food
7.1
Boarding
8.1
Crew
8.5
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
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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Complete your trip to Illinois by adding a car rental and/or hotel reservation to your travel itinerary.
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San Luis Obispo and Illinois flights
Browse other San Luis Obispo and Illinois flight options. Last updated on July 23, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
San Luis Obispo to Illinois flights
Consider these flights traveling from San Luis Obispo to Illinois.
Top 3 airlines flying from San Luis Obispo to Illinois
Discover the top 3 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 July 23, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$274 | Average$434 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$290 | Average$620 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$348 | Average$540 | FlexibilityNo cancel fee | On-time69% |