$55+ Cheap flights from Illinois to California
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 4/20. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — LAX
Mar 26 — Apr 21
1 adult, Economy
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Find cheap flights from Illinois to California 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 Illinois to California
Keep the following information in mind while searching for Illinois to California flight deals. Data was last updated March 21, 2025.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $111 (Cheapflightsfares) |
One-way from | $55 (Kiwi.com) |
Popular in | December |
Cheapest in | September |
Average price | $355 |
Good round-trip deal | $258 or less |
Good one-way deal | $108 or less |
Find flight deals from Illinois to California
Cheapest flights from Illinois to CaliforniaExplore the most affordable flight options available from Illinois to California. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 21, 2025.
Explore the most affordable flight options available from Illinois to California. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 21, 2025.
This Cheapflightsfares deal was found by Cheapflights users on 3/19. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/277:12 pmORD - LAS
Nonstop4h 08mSpirit Airlines
Thu 5/17:40 amLAS - ORD
1 stop10h 19mSpirit Airlines
Deal found 3/19![Spirit Airlines logo]()
$111
This Kiwi.com deal was found by Cheapflights users on 3/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/62:34 pmORD - LAS
Nonstop4h 12mMultiple Airlines
Sat 4/1211:22 pmLAS - ORD
Nonstop3h 39mMultiple Airlines
Deal found 3/20![Multiple Airlines logo]()
$113
This Frontier deal was found by Cheapflights users on 3/20. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/57:46 pmORD - LAS
Nonstop4h 31mFrontier
Sat 4/1211:22 pmLAS - ORD
Nonstop3h 39mFrontier
Deal found 3/20![Frontier logo]()
$115
This Cheapflightsfares deal was found by Cheapflights users on 3/20. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/53:08 pmORD - BUR
1 stop7h 18mSpirit Airlines
Mon 5/128:36 pmBUR - ORD
1 stop12h 19mSpirit Airlines
Deal found 3/20![Spirit Airlines logo]()
$115
This FlightHub deal was found by Cheapflights users on 3/20. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/287:41 amORD - LAX
1 stop13h 18mSpirit Airlines
Wed 4/306:35 pmLAX - ORD
1 stop9h 58mSpirit Airlines
Deal found 3/20![Spirit Airlines logo]()
$134
This United Airlines deal was found by Cheapflights users on 3/19. 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.
Sat 4/267:57 pmORD - LAS
Nonstop4h 15mUnited Airlines
Wed 4/3011:59 pmLAS - ORD
Nonstop3h 40mUnited Airlines
Deal found 3/19![United Airlines logo]()
$159
This Southwest deal was found by Cheapflights users on 3/20. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/108:30 pmMDW - LAS
Nonstop4h 00mSouthwest
Tue 5/1311:45 pmLAS - MDW
Nonstop3h 35mSouthwest
Deal found 3/20![Southwest logo]()
$159
This American Airlines deal was found by Cheapflights users on 3/20. 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 4/266:45 pmORD - LAS
Nonstop4h 13mAmerican Airlines
Wed 4/3011:44 pmLAS - ORD
Nonstop3h 38mAmerican Airlines
Deal found 3/20![American Airlines logo]()
$160
This Cheapflightsfares deal was found by Cheapflights users on 3/20. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/53:08 pmORD - SAN
1 stop11h 34mSpirit Airlines
Mon 5/196:55 pmSAN - ORD
1 stop8h 30mSpirit Airlines
Deal found 3/20![Spirit Airlines logo]()
$173
This Southwest deal was found by Cheapflights users on 3/20. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/224:40 pmMDW - LAX
Nonstop4h 30mSouthwest
Tue 4/296:00 amLAX - MDW
Nonstop4h 05mSouthwest
Deal found 3/20![Southwest logo]()
$179
This Alaska Airlines deal was found by Cheapflights users on 3/20. 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 4/246:58 pmORD - SFO
Nonstop4h 59mAlaska Airlines
Tue 4/2911:48 amSFO - ORD
Nonstop4h 32mAlaska Airlines
Deal found 3/20![Alaska Airlines logo]()
$207
This American Airlines deal was found by Cheapflights users on 3/20. 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 4/198:15 amORD - SFO
Nonstop4h 53mAmerican Airlines
Sat 4/263:54 pmSFO - ORD
1 stop6h 46mAmerican Airlines
Deal found 3/20![American Airlines logo]()
$208
Cheapflights Fare Finder
Customize your flight search to find flights from Illinois to California 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 March 21, 2025.
Use the filters below to find and compare flights from Illinois to California that are best for you.
Fly from
Illinois
Fly to
California
Route
Depart
Return
Price
ChicagoLas Vegas
ORD - LAS
ORDLAS
Chicago O'Hare Intl
Sun 4/27
7:12 pm-9:20 pm
Nonstop4h 08m
Las Vegas Harry Reid Intl
Thu 5/1
7:40 am-7:59 pm
1 stop10h 19m
$111
ChicagoLas Vegas
ORD - LAS
ORDLAS
Chicago O'Hare Intl
Sat 4/12
7:46 pm-10:17 pm
Nonstop4h 31m
Las Vegas Harry Reid Intl
Sat 4/19
10:45 am-11:05 pm
1 stop10h 20m
$114
ChicagoLas Vegas
ORD - LAS
ORDLAS
Chicago O'Hare Intl
Sat 4/5
7:46 pm-10:17 pm
Nonstop4h 31m
Las Vegas Harry Reid Intl
Sat 4/12
11:22 pm-5:01 am
Nonstop3h 39m
$115
ChicagoBurbank
ORD - BUR
ORDBUR
Chicago O'Hare Intl
Mon 5/5
3:08 pm-8:26 pm
1 stop7h 18m
Burbank Bob Hope
Mon 5/12
8:36 pm-10:55 am
1 stop12h 19m
$115
ChicagoLos Angeles
ORD - LAX
ORDLAX
Chicago O'Hare Intl
Mon 4/28
7:41 am-6:59 pm
1 stop13h 18m
Los Angeles
Wed 4/30
6:35 pm-6:33 am
1 stop9h 58m
$134
ChicagoLas Vegas
ORD - LAS
ORDLAS
Chicago O'Hare Intl
Sat 4/26
7:57 pm-10:12 pm
Nonstop4h 15m
Las Vegas Harry Reid Intl
Wed 4/30
11:59 pm-5:39 am
Nonstop3h 40m
$159
ChicagoLas Vegas
MDW - LAS
MDWLAS
Chicago Midway
Sat 5/10
8:30 pm-10:30 pm
Nonstop4h 00m
Las Vegas Harry Reid Intl
Tue 5/13
11:45 pm-5:20 am
Nonstop3h 35m
$159
ChicagoLas Vegas
ORD - LAS
ORDLAS
Chicago O'Hare Intl
Sat 4/26
6:45 pm-8:58 pm
Nonstop4h 13m
Las Vegas Harry Reid Intl
Wed 4/30
11:44 pm-5:22 am
Nonstop3h 38m
$160
ChicagoSan Diego
ORD - SAN
ORDSAN
Chicago O'Hare Intl
Mon 5/5
3:08 pm-12:42 am
1 stop11h 34m
San Diego
Mon 5/19
6:55 pm-5:25 am
1 stop8h 30m
$173
ChicagoLos Angeles
MDW - LAX
MDWLAX
Chicago Midway
Tue 4/22
4:40 pm-7:10 pm
Nonstop4h 30m
Los Angeles
Tue 4/29
6:00 am-12:05 pm
Nonstop4h 05m
$179
Showing 1-10 of 60 results
Best time to book a flight from Illinois to California
Have a flexible travel schedule? Discover the best time to fly to California 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 California
What is the cheapest month to book a flight from Illinois to California?
Currently, January is the cheapest month in which you can book a flight from Illinois to California (average of $246). Flying from Illinois to California in March is currently the most expensive (average of $336). 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 CA?
Find hourly flight availability from Illinois to California. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 21, 2025.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Illinois to California as you normally would.
Weekly flight availability from Illinois to California
Explore weekly flight availability from Illinois to California. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated March 21, 2025.
The most flights from USIL to USCA are scheduled on a Thursday (105 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (59 on average).
Rainfall in California by month
Plan your trip to California by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in California ranges from 0.0 - 3.4 inches per month. February is typically the wettest month, when rainfall can reach 3.4 in. July is typically the driest time to visit California when rainfall is around 0.0 in.
Temperature in California by month
Plan your trip to California by taking into account the average temperature totals by month.
If weather is an important factor for your trip to California, 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 57.2 F).
Reviews of airlines servicing California
Get insights into the airlines that provide service to California. 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 California. Reviews last updated March 21, 2025.
See what other customers who have flown with Southwest, Alaska Airlines and Delta from Illinois to California have to say. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.7
Overall
8.1
Entertainment
7.6
Boarding
8.2
Comfort
8.1
Food
7.1
Reviews
1 / 20
8.0
ExcellentIla,Mar 2025
HOU - DAL
Crew
8.7
Overall
8.1
Entertainment
7.6
Boarding
8.2
Comfort
8.1
Food
7.1
Reviews
1 / 20
8.0
ExcellentIla,Mar 2025
HOU - DAL
Crew
8.7
Overall
8.1
Entertainment
7.6
Boarding
8.2
Comfort
8.1
Food
7.1
Reviews
1 / 20
8.0
ExcellentIla,Mar 2025
HOU - DAL
Crew
8.7
Overall
8.1
Entertainment
7.6
Boarding
8.2
Comfort
8.1
Food
7.1
Reviews
1 / 20
8.0
ExcellentIla,Mar 2025
HOU - DAL
Crew
8.7
Overall
8.1
Entertainment
7.6
Boarding
8.2
Comfort
8.1
Food
7.1
Reviews
1 / 20
8.0
ExcellentIla,Mar 2025
HOU - DAL
Crew
8.7
Overall
8.1
Entertainment
7.6
Boarding
8.2
Comfort
8.1
Food
7.1
Reviews
1 / 20
8.0
ExcellentIla,Mar 2025
HOU - DAL
Related info for your journey
Find useful and relevant information for your journey from Illinois to California. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
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Alternative routes for Illinois to California
See prices for flight routes from nearby airports that may be better suited for you.
Top 10 airlines flying from Illinois to California
Discover the top 10 airlines that operate flights from Illinois to California. 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 March 21, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$54 | Average$161 | FlexibilityNo cancel fee | On-time88% | |
| Cheapest$78 | Average$198 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$90 | Average$238 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$128 | Average$408 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$137 | Average$466 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$140 | Average$451 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$144 | Average$303 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$147 | Average$345 | FlexibilityNo cancel fee | On-time83% | |
| Cheapest$152 | Average$453 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$180 | Average$499 | FlexibilityNo cancel fee | On-time71% |