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Illinois

$53+ Cheap flights from California 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 12/12. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — ORD
Nov 25 — Dec 21
Mon 11/25
Mon 12/2
1 adult, Economy
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Cheap flight deals from California to Illinois

Discover tips and strategies to find the most affordable flight options for your journey from California (USCA) to Illinois (USIL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated November 20, 2024.

Find flight deals from California to Illinois

Cheapest flights from California to Illinois
Explore the most affordable flight options available from California to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 20, 2024.

This Booking.com deal was found by Cheapflights users on 11/19. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/57:03 pmBUR - ORD
1 stop8h 27mSpirit Airlines
Tue 12/109:10 pmORD - BUR
1 stop13h 35mSpirit Airlines
Deal found 11/19$124
This Frontier deal was found by Cheapflights users on 11/18. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/1211:47 amBUR - ORD
1 stop5h 58mFrontier
Mon 12/167:25 amORD - BUR
1 stop9h 41mFrontier
Deal found 11/18$128
This Frontier deal was found by Cheapflights users on 11/20. 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.
Thu 12/58:56 amONT - ORD
1 stop11h 11mFrontier
Fri 1/248:25 pmORD - ONT
1 stop12h 46mFrontier
Deal found 11/20$128
This Booking.com deal was found by Cheapflights users on 11/19. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/1211:47 amBUR - ORD
1 stop5h 58mMultiple Airlines
Fri 12/139:53 pmORD - BUR
1 stop12h 52mMultiple Airlines
Deal found 11/19$134
This Mytrip deal was found by Cheapflights users on 11/19. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/57:15 pmSAN - ORD
1 stop8h 15mSpirit Airlines
Sun 12/89:53 pmORD - SAN
1 stop12h 20mSpirit Airlines
Deal found 11/19$143
This Frontier deal was found by Cheapflights users on 11/19. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/168:42 amSAN - ORD
1 stop9h 03mFrontier
Thu 12/191:07 pmORD - SAN
1 stop12h 47mFrontier
Deal found 11/19$144
This Kiwi.com deal was found by Cheapflights users on 11/20. 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.
Sat 12/147:15 pmSAN - ORD
1 stop8h 15mMultiple Airlines
Wed 1/16:00 amORD - SAN
1 stop6h 22mMultiple Airlines
Deal found 11/20$148
This CheapOair deal was found by Cheapflights users on 11/19. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/112:45 pmLAX - ORD
1 stop12h 45mSpirit Airlines
Sun 12/159:53 pmORD - LAX
1 stop14h 01mSpirit Airlines
Deal found 11/19$162
This FlightHub deal was found by Cheapflights users on 11/20. 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.
Tue 12/106:00 amLAX - ORD
Nonstop4h 05mMultiple Airlines
Sun 1/58:34 pmORD - LAX
1 stop25h 57mMultiple Airlines
Deal found 11/20$167
This KAYAK deal was found by Cheapflights users on 11/19. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/49:30 pmLAX - MDW
1 stop12h 18mFrontier
Tue 1/148:15 amMDW - LAX
1 stop11h 25mFrontier
Deal found 11/19$168
This Frontier deal was found by Cheapflights users on 11/19. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/62:28 pmSJC - ORD
1 stop8h 07mFrontier
Sun 12/87:25 amORD - SJC
1 stop6h 43mFrontier
Deal found 11/19$168
This Mytrip deal was found by Cheapflights users on 11/19. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/59:20 pmSJC - ORD
2 stops15h 06mSpirit Airlines
Tue 12/109:10 pmORD - SJC
2 stops17h 37mSpirit Airlines
Deal found 11/19$169

Find flights from California to Illinois within your budget

Customize your flight search to find flights from California 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 2,629,791 searches. Data last updated November 20, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

BurbankChicago

BUR - ORD

BURORD

Burbank Bob Hope

Thu 12/5

7:03 pm-5:30 am

1 stop8h 27m

Chicago O'Hare Intl

Tue 12/10

9:10 pm-8:45 am

1 stop13h 35m

$124

BurbankChicago

BUR - ORD

BURORD

Burbank Bob Hope

Fri 2/7

3:56 pm-12:32 am

1 stop6h 36m

Chicago O'Hare Intl

Wed 2/12

6:50 am-11:33 am

1 stop6h 43m

$126

OntarioChicago

ONT - ORD

ONTORD

Ontario

Thu 12/5

8:56 am-10:07 pm

1 stop11h 11m

Chicago O'Hare Intl

Mon 12/9

7:25 am-1:00 pm

1 stop7h 35m

$128

BurbankChicago

BUR - ORD

BURORD

Burbank Bob Hope

Thu 12/12

11:47 am-7:45 pm

1 stop5h 58m

Chicago O'Hare Intl

Fri 12/13

9:53 pm-8:45 am

1 stop12h 52m

$134

San DiegoChicago

SAN - ORD

SANORD

San Diego

Sat 2/15

2:08 pm-5:05 am

1 stop12h 57m

Chicago O'Hare Intl

Wed 2/19

6:50 am-11:48 am

1 stop6h 58m

$142

San DiegoChicago

SAN - ORD

SANORD

San Diego

Thu 12/5

5:58 pm-5:30 am

1 stop9h 32m

Chicago O'Hare Intl

Sun 12/8

9:53 pm-8:13 am

1 stop12h 20m

$143

San DiegoChicago

SAN - ORD

SANORD

San Diego

Tue 1/7

7:16 pm-5:30 am

1 stop8h 14m

Chicago O'Hare Intl

Sat 1/11

6:20 am-5:29 pm

1 stop13h 09m

$145

Los AngelesChicago

LAX - ORD

LAXORD

Los Angeles

Wed 12/11

2:45 pm-5:30 am

1 stop12h 45m

Chicago O'Hare Intl

Sun 12/15

9:53 pm-9:54 am

1 stop14h 01m

$162

Los AngelesChicago

LAX - ORD

LAXORD

Los Angeles

Wed 12/11

12:40 am-6:43 am

Nonstop4h 03m

Chicago O'Hare Intl

Tue 12/24

6:55 am-12:30 am

1 stop19h 35m

$164

Los AngelesChicago

LAX - MDW

LAXMDW

Los Angeles

Sun 2/2

9:30 pm-11:44 am

1 stop12h 14m

Chicago Midway

Tue 2/18

7:05 am-1:35 pm

1 stop8h 30m

$166

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/19

Showing 1-10 of 60 results
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Best time to book a flight from California to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois from California 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.

Travel insights for flights from California to Illinois

Get recent, data-driven insights about flights from California to Illinois including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from California to Illinois?

Currently, September is the cheapest month in which you can book a flight from California to Illinois (average of $232). Flying from California to Illinois in June is currently the most expensive (average of $308). 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 CA to IL?

Find hourly flight availability from California 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 November 20, 2024.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from California to Illinois as you normally would.

Weekly flight availability from California to Illinois

Explore weekly flight availability from California to Illinois. 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 November 20, 2024.

The most flights from USCA to USIL are scheduled on a Monday (102 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (56 on average).

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 November 20, 2024.
See what other customers who have flown with Frontier, Spirit Airlines and American Airlines from California to Illinois have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
5,014 reviews

Entertainment

7.7

Comfort

8.1

Overall

8.1

Food

7.2

Boarding

8.2

Crew

8.7

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Southwest
8.1
Very good
5,014 reviews
Southwest
8.1
Very good
5,014 reviews

Entertainment

7.7

Comfort

8.1

Overall

8.1

Food

7.2

Boarding

8.2

Crew

8.7

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Alaska Airlines
8.0
Very good
9,461 reviews
Southwest
8.1
Very good
5,014 reviews

Entertainment

7.7

Comfort

8.1

Overall

8.1

Food

7.2

Boarding

8.2

Crew

8.7

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Delta
8.0
Very good
8,756 reviews
Southwest
8.1
Very good
5,014 reviews

Entertainment

7.7

Comfort

8.1

Overall

8.1

Food

7.2

Boarding

8.2

Crew

8.7

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

United Airlines
7.4
Good
9,171 reviews
Southwest
8.1
Very good
5,014 reviews

Entertainment

7.7

Comfort

8.1

Overall

8.1

Food

7.2

Boarding

8.2

Crew

8.7

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

WestJet
7.3
Good
2,811 reviews
Southwest
8.1
Very good
5,014 reviews

Entertainment

7.7

Comfort

8.1

Overall

8.1

Food

7.2

Boarding

8.2

Crew

8.7

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Related info for your journey

Find useful and relevant information for your journey from California to Illinois. 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 California to Illinois one-way?

    For one-way options, check prices for Frontier. According to our data, you can fly for as low as $53. Users have also found prices from $62 and $85 on Spirit Airlines and Southwest, respectively.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from California to Illinois 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 California to Illinois?

    Currently, September is the cheapest month in which you can book a flight from California to Illinois (average of $232). Flying from California to Illinois in June is currently the most expensive (average of $308). 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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for California to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
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Top 9 airlines flying from California to Illinois

Discover the top 9 airlines that operate flights from California 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 2,629,791 searches. Data last updated November 20, 2024.
AirlineCheapestAverageFlexibilityOn-time
Allegiant AirCheapest$49Average$120FlexibilityNo cancel feeOn-time88%
Alaska AirlinesCheapest$68Average$412FlexibilityNo cancel feeOn-time75%
FrontierCheapest$72Average$214FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$82Average$232FlexibilityNo cancel feeOn-time65%
Sun Country AirCheapest$149Average$362FlexibilityNo cancel feeOn-time83%
United AirlinesCheapest$179Average$485FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$184Average$458FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$184Average$511FlexibilityNo cancel feeOn-time71%
DeltaCheapest$204Average$460FlexibilityNo cancel feeOn-timeN/A
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