How does KAYAK find such low prices on flights from California to Chicago?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from California to Chicago.

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from California to Chicago?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Chicago from California is likely to change within 7 days, so travelers know whether to wait or book now.

What is the Hacker Fare option on flights from California to Chicago?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Chicago with an airline and back to California with another airline.

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from California to Chicago?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Chicago from California up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

$103 CHEAP FLIGHTS from California to Chicago

Save 21% or more on flights. Compare deals from all over the web.

Never overpay with our price tracking tools.

Filter searches by price, airline and more to find your best flights.

Flight Deals

Cheap Flights from California to Chicago

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Last minute

Direct

Recent round-trip flight deals from California to Chicago

Thu, Oct 22 - Tue, Nov 3

8:35 pm - 5:16 amONT Ontario-ORD Chicago O'Hare Intl

6h 41m1 stop Las Vegas Harry Reid Intl

6:30 am - 10:35 amORD Chicago O'Hare Intl-ONT Ontario

6h 05m1 stop Denver Intl

$195Frontier

Tue, Oct 13 - Tue, Oct 20

6:15 am - 12:24 amONT Ontario-ORD Chicago O'Hare Intl

16h 09m1 stop Denver Intl

8:30 am - 4:48 pmORD Chicago O'Hare Intl-ONT Ontario

10h 18m1 stop Dallas/Fort Worth

$198Frontier

Sun, Oct 18 - Wed, Oct 21

12:21 am - 6:34 amLAX Los Angeles-ORD Chicago O'Hare Intl

4h 13mnonstop

9:00 am - 5:03 pmORD Chicago O'Hare Intl-LAX Los Angeles

10h 03m1 stop Seattle/Tacoma Intl

$202Multiple Airlines

Mon, Oct 19 - Sat, Oct 24

6:02 am - 6:20 pmONT Ontario-ORD Chicago O'Hare Intl

10h 18m1 stop Seattle/Tacoma Intl

6:30 am - 10:29 amORD Chicago O'Hare Intl-ONT Ontario

5h 59m1 stop Denver Intl

$207Multiple Airlines

Thu, Dec 10 - Mon, Dec 14

11:55 pm - 5:55 amLAX Los Angeles-MDW Chicago Midway

4h 00mnonstop

9:15 pm - 11:50 pmMDW Chicago Midway-LAX Los Angeles

4h 35mnonstop

$215Southwest

Fri, Nov 13 - Tue, Nov 17

10:00 am - 11:55 pmLAX Los Angeles-ORD Chicago O'Hare Intl

11h 55m1 stop Fort Lauderdale

7:00 am - 2:47 pmORD Chicago O'Hare Intl-LAX Los Angeles

9h 47m1 stop Fort Lauderdale

$215JetBlue

Mon, Oct 19 - Sat, Oct 24

10:40 pm - 11:24 amLAX Los Angeles-ORD Chicago O'Hare Intl

10h 44m1 stop New York John F Kennedy Intl

2:55 pm - 10:49 pmORD Chicago O'Hare Intl-LAX Los Angeles

9h 54m1 stop Fort Lauderdale

$215JetBlue

Wed, Oct 28 - Sat, Oct 31

6:45 pm - 12:59 amLAX Los Angeles-ORD Chicago O'Hare Intl

4h 14mnonstop

1:00 pm - 3:29 pmORD Chicago O'Hare Intl-LAX Los Angeles

4h 29mnonstop

$215United Airlines

Tue, Oct 27 - Sat, Oct 31

3:43 pm - 10:00 pmLAX Los Angeles-ORD Chicago O'Hare Intl

4h 17mnonstop

6:00 am - 8:36 amORD Chicago O'Hare Intl-LAX Los Angeles

4h 36mnonstop

$215United Airlines

Thu, Oct 29 - Fri, Oct 30

4:00 pm - 9:55 pmLAX Los Angeles-MDW Chicago Midway

3h 55mnonstop

9:20 pm - 11:55 pmMDW Chicago Midway-LAX Los Angeles

4h 35mnonstop

$216Southwest

Recent last minute flight deals from California to Chicago

Wed, Sep 23 - Sat, Oct 24

10:04 am - 5:38 amONT Ontario-ORD Chicago O'Hare Intl

17h 34m1 stop Las Vegas Harry Reid Intl

8:30 am - 4:48 pmORD Chicago O'Hare Intl-ONT Ontario

10h 18m1 stop Dallas/Fort Worth

$227Frontier

Sat, Sep 26 - Thu, Oct 22

11:45 am - 12:23 amONT Ontario-ORD Chicago O'Hare Intl

10h 38m1 stop Denver Intl

12:26 pm - 7:05 pmORD Chicago O'Hare Intl-ONT Ontario

8h 39m1 stop Dallas/Fort Worth

$229Frontier

Wed, Sep 23 - Sat, Oct 24

1:18 pm - 9:30 pmONT Ontario-ORD Chicago O'Hare Intl

6h 12m1 stop Denver Intl

8:20 pm - 10:51 pmORD Chicago O'Hare Intl-ONT Ontario

4h 31mnonstop

$278United Airlines

Sun, Sep 27 - Wed, Sep 30

7:11 pm - 5:59 amONT Ontario-ORD Chicago O'Hare Intl

8h 48m1 stop Phoenix Sky Harbor Intl

5:00 am - 9:29 amORD Chicago O'Hare Intl-ONT Ontario

6h 29m1 stop Dallas/Fort Worth

$317American Airlines

Sun, Sep 27 - Tue, Sep 29

7:11 pm - 5:59 amONT Ontario-ORD Chicago O'Hare Intl

8h 48m1 stop Phoenix Sky Harbor Intl

3:00 pm - 10:37 pmORD Chicago O'Hare Intl-ONT Ontario

9h 37m1 stop Dallas/Fort Worth

$317American Airlines

Thu, Sep 24 - Mon, Sep 28

9:52 am - 6:04 pmONT Ontario-ORD Chicago O'Hare Intl

6h 12m1 stop Salt Lake City

1:55 pm - 10:40 pmORD Chicago O'Hare Intl-ONT Ontario

10h 45m2 stops Detroit Metropolitan Wayne County Seattle/Tacoma Intl

$322Delta

Sun, Sep 27 - Sun, Oct 4

6:00 pm - 7:56 amONT Ontario-ORD Chicago O'Hare Intl

11h 56m2 stops Seattle/Tacoma Intl Detroit Metropolitan Wayne County

5:30 am - 11:09 amORD Chicago O'Hare Intl-ONT Ontario

7h 39m1 stop Atlanta Hartsfield-Jackson

$322Delta

Sat, Sep 26 - Sun, Oct 11

9:03 am - 7:41 pmSAN San Diego-ORD Chicago O'Hare Intl

8h 38m1 stop Dallas/Fort Worth

7:20 am - 9:56 amORD Chicago O'Hare Intl-SAN San Diego

4h 36mnonstop

$327Multiple Airlines

Sat, Sep 26 - Wed, Sep 30

6:02 am - 6:01 pmONT Ontario-ORD Chicago O'Hare Intl

9h 59m1 stop Seattle/Tacoma Intl

6:30 am - 10:30 amORD Chicago O'Hare Intl-ONT Ontario

6h 00m1 stop Denver Intl

$333Multiple Airlines

Sat, Sep 26 - Sun, Oct 11

2:07 pm - 8:28 pmSAN San Diego-ORD Chicago O'Hare Intl

4h 21mnonstop

7:00 am - 11:35 amORD Chicago O'Hare Intl-SAN San Diego

6h 35m1 stop Los Angeles

$376United Airlines

Useful Info

Low season	January
High season	June
Cheapest flight	$103

Best time to beat the crowds but there is an average 2% increase in price.

Most popular time to fly with an average 11% increase in price.

Flight from Los Angeles to Chicago O'Hare Airport

CupcakeFlew with Alaska Airlines-Apr 2026

Please bring a water bottle for hydration during the flight.

StephenFlew with United Airlines-Jan 2026

If you're trying to make a connecting flight make sure you allow PLENTY of time between flights or be prepared to miss the next flight. Make sure to use the restroom at the last possible moment before landing because you could be sitting on the taxiway for 5 more minutes... 5 more minutes... 5 more minutes... until it's been nearly 2 hours. Don't trust the airline provided ETA provided by apps they don't update it until long after you're delayed. If someone is showing up to give you a ride, make sure they have hours to wait for you.

RodFlew with United Airlines-Sep 2024

Yes! Don’t reserve a flight with less than 1 1/2 hour connection time or you have a good possibility of missing your connection.

FrancisFlew with United Airlines-Sep 2024

Check the weather, or bring a. Raincoat! Being from sunny California, I forget it isn’t always sunshine in other states!

GeraldFlew with Alaska Airlines-Oct 2024

Book a flight as early in the day as possible to avoid incoming flight delays.

KimFlew with American Airlines-Nov 2024

Bring extra foods and buy extra drinks bring your meds

ShirleyFlew with United Airlines-May 2024

Check-in using the United AirLines app to access your boarding pass. Arrive at least two hours early at LAX airport.

How does KAYAK find such low prices on flights from California to Chicago?
KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from California to Chicago.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from California to Chicago?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Chicago from California is likely to change within 7 days, so travelers know whether to wait or book now.
What is the Hacker Fare option on flights from California to Chicago?
Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Chicago with an airline and back to California with another airline.
What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from California to Chicago?
Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Chicago from California up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Merrillville

Hammond

Saint Joseph

Portage

Lansing

Valparaiso

Schererville

Chesterton

Munster

Porter

Monticello

Saint John

Griffith

More options for your flight to Chicago

Add a hotel or car rental

Cabin class

Direct Flights

Origins

Other airports

Other destinations

Return flight

Complete your trip to Chicago with a hotel stay or car rental

Car rentals in Chicago

$103 Find Cheap Flights from California to Chicago - Compare and Save

Cheap Flights from California to Chicago

Recent round-trip flight deals from California to Chicago

Recent one-way flight deals from California to Chicago

Recent last minute flight deals from California to Chicago

Recent direct flight deals from California to Chicago

Good to know

Low season

High season

Cheapest flight

Flights from California to Chicago: the best tips from KAYAK users

FAQs for booking flights from California to Chicago

Traveling to a place near Chicago?

More options for your flight to Chicago

Complete your trip to Chicago with a hotel stay or car rental

Cabin class types available on flights to California

Find direct flights for Chicago

Flights from domestic origins to Chicago

Choose which airport to fly into in Chicago

Flights to other popular destinations

Find deals for your return flight