$190+ Cheap flights from San Luis Obispo (SBP) to Illinois
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/4. Fares are subject to change and may not be available on all flights or dates of travel.
SBP — ORD
Nov 25 — Dec 21
Round-trip
1 adult, Economy
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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
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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 October 26, 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 October 26, 2026.
This American Airlines deal was found by Cheapflights users on 10/22. 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.
Sat 12/1212:42 pm -
1 stop7h 16m
Wed 1/206:00 am -
1 stop8h 05m
Deal found 10/22![American Airlines logo]()
$379
This American Airlines deal was found by Cheapflights users on 10/22. 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.
Tue 12/112:32 pm -
2 stops9h 48m
Sat 12/510:34 am -
2 stops10h 12m
Deal found 10/22![American Airlines logo]()
$389
This Alaska Airlines deal was found by Cheapflights users on 10/25. 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 12/236:00 am -
1 stop29h 19m
Thu 12/317:00 am -
1 stop11h 36m
Deal found 10/25![Alaska Airlines logo]()
$391
This American Airlines deal was found by Cheapflights users on 10/23. 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.
Sat 12/197:21 pm -
1 stop8h 01m
Sat 1/235:00 am -
1 stop8h 54m
Deal found 10/23![American Airlines logo]()
$399
This American Airlines deal was found by Cheapflights users on 10/22. 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 11/1112:36 pm -
1 stop9h 23m
Sat 11/146:00 am -
1 stop7h 51m
Deal found 10/22![American Airlines logo]()
$414
This Orbitz deal was found by Cheapflights users on 10/21. 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.
Tue 12/225:16 pm -
1 stop18h 03m
Tue 12/292:17 pm -
1 stop11h 34m
Deal found 10/21![Alaska Airlines logo]()
$424
This United Airlines deal was found by Cheapflights users on 10/23. 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 11/710:38 am -
1 stop6h 18m
Wed 11/111:00 pm -
1 stop6h 38m
Deal found 10/23![United Airlines logo]()
$449
This American Airlines deal was found by Cheapflights users on 10/23. 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.
Sat 11/712:42 pm -
2 stops8h 33m
Wed 11/116:00 am -
1 stop7h 51m
Deal found 10/23![American Airlines logo]()
$454
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 October 26, 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 October 26, 2026.
This Alaska Airlines deal was found by Cheapflights users on 10/22. 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.
Wed 12/306:00 am -
1 stop10h 54m
Wed 12/307:58 pm -
1 stop22h 38m
Deal found 10/22![Alaska Airlines logo]()
$379
This United Airlines deal was found by Cheapflights users on 10/22. 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.
Tue 12/12:24 pm -
1 stop6h 35m
Sat 12/512:40 pm -
1 stop9h 33m
Deal found 10/22![United Airlines logo]()
$379
This American Airlines deal was found by Cheapflights users on 10/21. 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.
Fri 12/46:00 am -
1 stop8h 09m
Wed 12/95:00 am -
1 stop9h 02m
Deal found 10/21![American Airlines logo]()
$379
This American Airlines deal was found by Cheapflights users on 10/21. 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.
Wed 11/1112:42 pm -
2 stops9h 17m
Wed 11/186:00 am -
1 stop7h 51m
Deal found 10/21![American Airlines logo]()
$384
This Alaska Airlines deal was found by Cheapflights users on 10/25. 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 2/66:00 am -
1 stop14h 08m
Tue 2/97:40 am -
1 stop9h 24m
Deal found 10/25![Alaska Airlines logo]()
$391
This American Airlines deal was found by Cheapflights users on 10/23. 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.
Tue 12/112:32 pm -
2 stops9h 48m
Tue 12/810:34 am -
2 stops10h 12m
Deal found 10/23![American Airlines logo]()
$389
This United Airlines deal was found by Cheapflights users on 10/22. 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.
Fri 11/67:08 am -
1 stop7h 52m
Tue 11/1010:25 am -
1 stop7h 00m
Deal found 10/22![United Airlines logo]()
$449
This United Airlines deal was found by Cheapflights users on 10/23. 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 11/710:38 am -
1 stop6h 18m
Wed 11/111:00 pm -
1 stop6h 38m
Deal found 10/23![United Airlines logo]()
$449
This Alaska Airlines deal was found by Cheapflights users on 10/25. 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 11/96:42 pm -
1 stop16h 27m
Fri 11/133:59 pm -
1 stop19h 29m
Deal found 10/25![Alaska Airlines logo]()
$449
This American Airlines deal was found by Cheapflights users on 10/21. 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.
Sat 12/197:21 pm -
1 stop8h 01m
Sat 1/235:00 am -
1 stop8h 54m
Deal found 10/21![American Airlines logo]()
$455
Last-minute flights from San Luis Obispo to IllinoisDiscover last-minute flight deals from San Luis Obispo to Illinois. Data last updated October 26, 2026 and is based on user searches.
Discover last-minute flight deals from San Luis Obispo to Illinois. Data last updated October 26, 2026 and is based on user searches.
This Expedia deal was found by Cheapflights users on 10/21. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/256:08 am -
1 stop10h 45m
Wed 10/282:14 pm -
1 stop7h 44m
Deal found 10/21![Alaska Airlines logo]()
$570
This Alaska Airlines deal was found by Cheapflights users on 10/24. 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 10/287:30 am -
1 stop27h 48m
Sat 10/312:14 pm -
1 stop29h 48m
Deal found 10/24![Alaska Airlines logo]()
$531
This American Airlines deal was found by Cheapflights users on 10/24. 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 10/2812:38 pm -
1 stop7h 32m
Sat 10/315:00 am -
2 stops9h 07m
Deal found 10/24![American Airlines logo]()
$536
This Expedia deal was found by Cheapflights users on 10/22. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/26:42 pm -
1 stop16h 27m
Wed 11/47:00 am -
1 stop13h 02m
Deal found 10/22![Alaska Airlines logo]()
$535
This United Airlines deal was found by Cheapflights users on 10/23. 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 11/710:38 am -
1 stop6h 18m
Wed 11/111:00 pm -
1 stop6h 38m
Deal found 10/23![United Airlines logo]()
$449
This American Airlines deal was found by Cheapflights users on 10/23. 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.
Sat 11/712:42 pm -
2 stops8h 33m
Wed 11/116:00 am -
1 stop7h 51m
Deal found 10/23![American Airlines logo]()
$454
This American Airlines deal was found by Cheapflights users on 10/21. 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.
Wed 11/1112:36 pm -
1 stop9h 23m
Wed 11/185:00 am -
1 stop8h 51m
Deal found 10/21![American Airlines logo]()
$379
This American Airlines deal was found by Cheapflights users on 10/22. 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 11/1112:36 pm -
1 stop9h 23m
Sat 11/146:00 am -
1 stop7h 51m
Deal found 10/22![American Airlines logo]()
$414
This Alaska Airlines deal was found by Cheapflights users on 10/22. 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 11/196:00 am -
2 stops15h 59m
Thu 11/267:26 am -
1 stop11h 43m
Deal found 10/22![Alaska Airlines logo]()
$484
This Expedia deal was found by Cheapflights users on 10/25. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/276:01 am -
1 stop15h 48m
Mon 11/309:01 pm -
1 stop19h 30m
Deal found 10/25![Alaska Airlines logo]()
$466
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 October 26, 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 October 26, 2026.
This Priceline deal was found by Cheapflights users on 10/21. 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.
Fri 12/47:06 pm -
1 stop8h 31m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Alaska Airlines logo]()
$190
This Alaska Airlines deal was found by Cheapflights users on 10/23. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/53:16 pm -
1 stop6h 33m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/23![Alaska Airlines logo]()
$225
This Orbitz deal was found by Cheapflights users on 10/21. 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.
Sat 11/710:08 am -
1 stop11h 51m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Alaska Airlines logo]()
$230
This Orbitz deal was found by Cheapflights users on 10/21. 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.
Fri 11/66:00 am -
1 stop10h 59m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Alaska Airlines logo]()
$240
This Alaska Airlines deal was found by Cheapflights users on 10/24. 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.
Sun 11/156:00 am -
1 stop29h 17m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/24![Alaska Airlines logo]()
$257
This Orbitz deal was found by Cheapflights users on 10/25. 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.
Mon 11/26:00 am -
1 stop10h 59m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/25![Alaska Airlines logo]()
$275
This United Airlines deal was found by Cheapflights users on 10/22. 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.
Sun 11/156:40 pm -
1 stop9h 07m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/22![United Airlines logo]()
$379
This Expedia deal was found by Cheapflights users on 10/21. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/16:00 am -
2 stops15h 59m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Alaska Airlines logo]()
$430
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 October 26, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $379 (Alaska Airlines) |
One-way from | $190 (Priceline) |
Popular in | November |
Cheapest in | March |
Average price | $627 |
Good round-trip deal | $1,191 or less |
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 7,457,451 searches. Data last updated October 26, 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 San Luis Obispo County - ORD Chicago O'Hare Intl
SBPORD
San Luis Obispo County
Fri 1/1
6:00 am-6:54 pm
1 stop10h 54m
Chicago O'Hare Intl
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$240
San Luis ObispoChicago
SBP San Luis Obispo County - ORD Chicago O'Hare Intl
SBPORD
San Luis Obispo County
Sun 11/15
6:00 am-1:17 pm
1 stop29h 17m
Chicago O'Hare Intl
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$257
San Luis ObispoChicago
SBP San Luis Obispo County - ORD Chicago O'Hare Intl
SBPORD
San Luis Obispo County
Mon 11/2
6:00 am-6:59 pm
1 stop10h 59m
Chicago O'Hare Intl
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$275
San Luis ObispoChicago
SBP San Luis Obispo County - ORD Chicago O'Hare Intl
SBPORD
San Luis Obispo County
Sat 12/19
8:34 pm-6:59 am
1 stop8h 25m
Chicago O'Hare Intl
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$379
San Luis ObispoChicago
SBP San Luis Obispo County - ORD Chicago O'Hare Intl
SBPORD
San Luis Obispo County
Wed 12/30
6:00 am-6:54 pm
1 stop10h 54m
Chicago O'Hare Intl
Wed 12/30
7:58 pm-4:36 pm
1 stop22h 38m
$379
San Luis ObispoChicago
SBP San Luis Obispo County - ORD Chicago O'Hare Intl
SBPORD
San Luis Obispo County
Tue 12/1
2:24 pm-10:59 pm
1 stop6h 35m
Chicago O'Hare Intl
Sat 12/5
12:40 pm-8:13 pm
1 stop9h 33m
$379
San Luis ObispoChicago
SBP San Luis Obispo County - ORD Chicago O'Hare Intl
SBPORD
San Luis Obispo County
Fri 12/4
6:00 am-4:09 pm
1 stop8h 09m
Chicago O'Hare Intl
Wed 12/9
5:00 am-12:02 pm
1 stop9h 02m
$379
San Luis ObispoChicago
SBP San Luis Obispo County - ORD Chicago O'Hare Intl
SBPORD
San Luis Obispo County
Wed 11/11
12:42 pm-11:59 pm
2 stops9h 17m
Chicago O'Hare Intl
Wed 11/18
6:00 am-11:51 am
1 stop7h 51m
$384
San Luis ObispoChicago
SBP San Luis Obispo County - ORD Chicago O'Hare Intl
SBPORD
San Luis Obispo County
Tue 12/1
12:32 pm-12:20 am
2 stops9h 48m
Chicago O'Hare Intl
Tue 12/8
10:34 am-6:46 pm
2 stops10h 12m
$389
San Luis ObispoChicago
SBP San Luis Obispo County - ORD Chicago O'Hare Intl
SBPORD
San Luis Obispo County
Sat 2/6
6:00 am-10:08 pm
1 stop14h 08m
Chicago O'Hare Intl
Tue 2/9
7:40 am-3:04 pm
1 stop9h 24m
$391
Showing 1-10 of 17 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
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
What is the cheapest month to book a flight from San Luis Obispo to Illinois?
Currently, January is the cheapest month in which you can book a flight from San Luis Obispo to Illinois (average of $378). 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 October 26, 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 typical for this route at the moment.
San Luis Obispo to Illinois flights typically cost between $368 and $626 in December.The cheapest round-trip price found within the last 5 days was $379 on American Airlines (Dec 12-Jan 20).
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 October 26, 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
Entertainment
7.0
Food
7.0
Boarding
8.1
Comfort
7.8
Crew
8.5
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Overall
7.9
Entertainment
7.0
Food
7.0
Boarding
8.1
Comfort
7.8
Crew
8.5
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Overall
7.9
Entertainment
7.0
Food
7.0
Boarding
8.1
Comfort
7.8
Crew
8.5
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Overall
7.9
Entertainment
7.0
Food
7.0
Boarding
8.1
Comfort
7.8
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 October 26, 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 7,457,451 searches. Data last updated October 26, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$290 | Average$620 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$298 | Average$434 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$348 | Average$529 | FlexibilityNo cancel fee | On-time69% |