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$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 5/16. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — LAX
may. 6 — may. 131
mar. 5/6
mar. 5/13
1 adult, Economy
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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 mayo 1, 2025.

Most accurate provider

Mytrip
3 stars

Most trusted provider

Mytrip
3 stars

Round-trip from

$134
(Kiwi.com)

One-way from

$55
(Cheapflightsfares)

Popular in

December

Cheapest in

September

Average price

$261

Good round-trip deal

$218 or less

Good one-way deal

$108 or less
Provider with most accurate pricing for Chicago (CHI)-Los Angeles flight deals.
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Provider most trusted by Cheapflights users for Chicago (CHI)-Los Angeles flights.
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From Illinois to California
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One-way flight from Illinois to California
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Highest demand for flights based on searches. 7% potential increase in price ($24 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($9 potential savings vs. average RT price).
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Average for round-trip flights in May 2025
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Price to beat on a round-trip flight from Illinois to California.
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Price to beat on a one-way flight from Illinois to California.
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Find flight deals from Illinois to California

Cheapest flights from Illinois to California
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 mayo 1, 2025.

This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 6/159:56 pmORD - LAS
Nonstop4h 14mMultiple Airlines
vie. 6/205:15 amLAS - ORD
Nonstop3h 35mMultiple Airlines
Deal found 4/29$134
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 6/38:37 amORD - LAS
1 stop13h 33mSpirit Airlines
mar. 6/1712:44 amLAS - ORD
Nonstop3h 28mSpirit Airlines
Deal found 4/29$135
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 6/166:25 amMDW - LAS
Nonstop3h 59mFrontier
vie. 6/209:19 amLAS - MDW
Nonstop3h 37mFrontier
Deal found 4/28$138
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 5/289:02 pmORD - LAX
1 stop14h 33mSpirit Airlines
dom. 6/112:41 amLAX - ORD
Nonstop4h 01mSpirit Airlines
Deal found 4/30$141
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 6/39:02 pmORD - LAX
1 stop14h 54mMultiple Airlines
sáb. 6/74:36 pmLAX - ORD
Nonstop4h 19mMultiple Airlines
Deal found 4/30$142
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 6/29:02 pmORD - BUR
1 stop16h 08mSpirit Airlines
mié. 6/44:18 pmBUR - ORD
1 stop11h 07mSpirit Airlines
Deal found 4/30$143
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 5/129:55 pmSTL - LAS
Nonstop3h 46mFrontier
vie. 5/163:39 pmLAS - STL
Nonstop3h 26mFrontier
Deal found 4/30$147
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 5/2910:02 pmORD - LAS
Nonstop4h 06mFrontier
dom. 6/110:34 pmLAS - ORD
1 stop16h 41mFrontier
Deal found 4/30$155
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 7/316:10 amORD - LAX
Nonstop4h 29mFrontier
dom. 8/104:45 pmLAX - ORD
Nonstop4h 22mFrontier
Deal found 4/30$168
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 5/319:02 pmORD - SAN
1 stop12h 11mSpirit Airlines
mié. 6/48:48 pmSAN - ORD
2 stops10h 07mSpirit Airlines
Deal found 4/30$188
This Booking.com 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 6/1711:50 amORD - SAN
1 stop8h 36mMultiple Airlines
mar. 6/244:53 pmSAN - ORD
Nonstop4h 03mMultiple Airlines
Deal found 4/30$190
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 5/3110:10 amSTL - LAS
1 stop14h 44mSpirit Airlines
sáb. 6/79:24 pmLAS - STL
1 stop9h 51mSpirit Airlines
Deal found 4/30$190

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 mayo 1, 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

dom. 6/15

9:56 pm-12:10 am

Nonstop4h 14m

Las Vegas Harry Reid Intl

vie. 6/20

5:15 am-10:50 am

Nonstop3h 35m

$134

ChicagoLas Vegas

ORD - LAS

ORDLAS

Chicago O'Hare Intl

mar. 6/3

8:37 am-8:10 pm

1 stop13h 33m

Las Vegas Harry Reid Intl

mar. 6/17

12:44 am-6:12 am

Nonstop3h 28m

$135

ChicagoLas Vegas

MDW - LAS

MDWLAS

Chicago Midway

lun. 6/16

6:25 am-8:24 am

Nonstop3h 59m

Las Vegas Harry Reid Intl

vie. 6/20

9:19 am-2:56 pm

Nonstop3h 37m

$138

ChicagoLos Angeles

ORD - LAX

ORDLAX

Chicago O'Hare Intl

mié. 5/28

9:02 pm-9:35 am

1 stop14h 33m

Los Angeles

dom. 6/1

12:41 am-6:42 am

Nonstop4h 01m

$141

ChicagoLos Angeles

ORD - LAX

ORDLAX

Chicago O'Hare Intl

mar. 6/3

9:02 pm-9:56 am

1 stop14h 54m

Los Angeles

sáb. 6/7

4:36 pm-10:55 pm

Nonstop4h 19m

$142

ChicagoBurbank

ORD - BUR

ORDBUR

Chicago O'Hare Intl

lun. 6/2

9:02 pm-11:10 am

1 stop16h 08m

Burbank Bob Hope

mié. 6/4

4:18 pm-5:25 am

1 stop11h 07m

$143

ChicagoLas Vegas

ORD - LAS

ORDLAS

Chicago O'Hare Intl

vie. 5/30

9:50 pm-12:12 am

Nonstop4h 22m

Las Vegas Harry Reid Intl

jue. 6/5

10:48 am-9:37 pm

1 stop8h 49m

$147

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

lun. 5/12

9:55 pm-11:41 pm

Nonstop3h 46m

Las Vegas Harry Reid Intl

vie. 5/16

3:39 pm-9:05 pm

Nonstop3h 26m

$147

ChicagoLos Angeles

ORD - LAX

ORDLAX

Chicago O'Hare Intl

jue. 6/5

6:10 am-8:43 am

Nonstop4h 33m

Los Angeles

jue. 6/12

4:46 pm-11:05 pm

Nonstop4h 19m

$170

ChicagoSan Diego

ORD - SAN

ORDSAN

Chicago O'Hare Intl

sáb. 5/31

9:02 pm-7:13 am

1 stop12h 11m

San Diego

mié. 6/4

8:48 pm-8:55 am

2 stops10h 07m

$188

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/30

Showing 1-10 of 60 results
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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 $327). 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 mayo 1, 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 mayo 1, 2025.

The most flights from USIL to USCA are scheduled on a Wednesday (105 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (35 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 mayo 1, 2025.
See what other customers who have flown with Alaska Airlines, Southwest 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.
Alaska Airlines
8.0
Very good
9,972 reviews

Boarding

8.1

Crew

8.5

Overall

8.0

Food

7.1

Entertainment

7.1

Comfort

7.9

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
9,972 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Boarding

8.1

Crew

8.5

Overall

8.0

Food

7.1

Entertainment

7.1

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,294 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Boarding

8.1

Crew

8.5

Overall

8.0

Food

7.1

Entertainment

7.1

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,934 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Boarding

8.1

Crew

8.5

Overall

8.0

Food

7.1

Entertainment

7.1

Comfort

7.9

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
2,409 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Boarding

8.1

Crew

8.5

Overall

8.0

Food

7.1

Entertainment

7.1

Comfort

7.9

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
8,696 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Boarding

8.1

Crew

8.5

Overall

8.0

Food

7.1

Entertainment

7.1

Comfort

7.9

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 Illinois to California. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines to fly from Illinois to California one-way?

    For one-way options, check prices for Frontier. According to our data, you can fly for as low as $55. Users have also found prices from $66 and $99 on Spirit Airlines and Southwest, respectively.

  • Can I find deals for flights from Illinois to California that include hotel bookings?

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

  • How can I find direct flights from Illinois to California?

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

  • Can I find deals for business class flights from Illinois to California?

    Yes. Cheapflights offers flight deals from Illinois to California 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 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 $327). 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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Alternative routes for Illinois to California

See prices for flight routes from nearby airports that may be better suited for you.
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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 mayo 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
Allegiant AirCheapest$49Average$130FlexibilityNo cancel feeOn-time88%
FrontierCheapest$78Average$216FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$88Average$240FlexibilityNo cancel feeOn-time65%
Hawaiian AirlinesCheapest$108Average$268FlexibilityNo cancel feeOn-time85%
United AirlinesCheapest$137Average$467FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$140Average$425FlexibilityNo cancel feeOn-time75%
DeltaCheapest$144Average$398FlexibilityNo cancel feeOn-timeN/A
Sun Country AirCheapest$147Average$345FlexibilityNo cancel feeOn-time83%
American AirlinesCheapest$179Average$489FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$204Average$449FlexibilityNo cancel feeOn-time63%

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