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.

$61 CHEAP FLIGHTS from California to Chicago

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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 8 - Wed, Oct 14

5:52 pm - 11:47 pmLAX Los Angeles Los Angeles-ORD Chicago O'Hare Intl

3h 55mnonstop

7:20 am - 9:55 amORD Chicago O'Hare Intl-LAX Los Angeles Los Angeles

4h 35mnonstop

$199Delta

Thu, Sep 17 - Wed, Sep 23

11:36 am - 12:23 amLAX Los Angeles Los Angeles-ORD Chicago O'Hare Intl

10h 47m1 stop Denver Intl

6:30 am - 2:14 pmORD Chicago O'Hare Intl-LAX Los Angeles Los Angeles

9h 44m1 stop Denver Intl

$199Frontier

Mon, Oct 19 - Tue, Oct 27

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

4h 13mnonstop

9:51 am - 12:23 amORD Chicago O'Hare Intl-LAX Los Angeles Los Angeles

16h 32m2 stops Orlando Denver Intl

$199Frontier

Fri, Oct 30 - Mon, Nov 2

4:00 pm - 9:50 pmLAX Los Angeles Los Angeles-MDW Chicago Midway

3h 50mnonstop

12:20 pm - 4:25 pmMDW Chicago Midway-LAX Los Angeles Los Angeles

6h 05m1 stop Tucson

$203Southwest

Wed, Sep 30 - Sat, Oct 3

2:15 pm - 8:10 pmLAX Los Angeles Los Angeles-MDW Chicago Midway

3h 55mnonstop

2:40 pm - 7:10 pmMDW Chicago Midway-LAX Los Angeles Los Angeles

6h 30m1 stop Austin Bergstrom

$203Southwest

Sat, Nov 14 - Wed, Nov 18

8:15 am - 2:35 pmLAX Los Angeles Los Angeles-ORD Chicago O'Hare Intl

4h 20mnonstop

6:00 am - 11:51 amORD Chicago O'Hare Intl-LAX Los Angeles Los Angeles

7h 51m1 stop San Francisco

$205United Airlines

Mon, Sep 14 - Tue, Sep 22

12:50 pm - 9:30 pmLAX Los Angeles Los Angeles-ORD Chicago O'Hare Intl

6h 40m1 stop Denver Intl

3:48 pm - 6:25 pmORD Chicago O'Hare Intl-LAX Los Angeles Los Angeles

4h 37mnonstop

$205United Airlines

Wed, Sep 23 - Mon, Sep 28

6:10 am - 8:45 pmLAX Los Angeles Los Angeles-MDW Chicago Midway

12h 35m1 stop Dallas Love Field

7:00 am - 9:15 amMDW Chicago Midway-LAX Los Angeles Los Angeles

4h 15mnonstop

$207JetBlue

Sat, Oct 31 - Sun, Nov 1

9:40 am - 3:45 pmLAX Los Angeles Los Angeles-ORD Chicago O'Hare Intl

4h 05mnonstop

6:35 am - 3:15 pmORD Chicago O'Hare Intl-LAX Los Angeles Los Angeles

10h 40m1 stop Seattle/Tacoma Intl

$207Delta

Wed, Sep 23 - Mon, Sep 28

9:05 am - 5:25 pmLAX Los Angeles Los Angeles-MDW Chicago Midway

6h 20m1 stop San Antonio

8:50 pm - 10:00 amMDW Chicago Midway-LAX Los Angeles Los Angeles

15h 10m1 stop Portland

$222JetBlue

Recent last minute flight deals from California to Chicago

Mon, Aug 24 - Wed, Aug 26

11:59 pm - 6:17 amLAX Los Angeles Los Angeles-ORD Chicago O'Hare Intl

4h 18mnonstop

9:20 pm - 12:04 amORD Chicago O'Hare Intl-LAX Los Angeles Los Angeles

4h 44mnonstop

$205Frontier

Mon, Aug 24 - Wed, Aug 26

11:59 pm - 6:17 amLAX Los Angeles Los Angeles-ORD Chicago O'Hare Intl

4h 18mnonstop

9:20 pm - 12:04 amORD Chicago O'Hare Intl-LAX Los Angeles Los Angeles

4h 44mnonstop

$205Frontier

Tue, Aug 25 - Wed, Sep 2

11:59 pm - 6:17 amLAX Los Angeles Los Angeles-ORD Chicago O'Hare Intl

4h 18mnonstop

3:43 pm - 10:59 pmORD Chicago O'Hare Intl-LAX Los Angeles Los Angeles

9h 16m1 stop Seattle/Tacoma Intl

$244Multiple Airlines

Tue, Aug 25 - Wed, Sep 30

8:27 am - 2:54 pmLAX Los Angeles Los Angeles-ORD Chicago O'Hare Intl

4h 27mnonstop

1:50 pm - 4:15 pmORD Chicago O'Hare Intl-LAX Los Angeles Los Angeles

4h 25mnonstop

$248American Airlines

Tue, Aug 25 - Wed, Aug 26

11:59 pm - 6:17 amLAX Los Angeles Los Angeles-ORD Chicago O'Hare Intl

4h 18mnonstop

2:22 pm - 8:17 pmORD Chicago O'Hare Intl-LAX Los Angeles Los Angeles

7h 55m1 stop Portland

$253Multiple Airlines

Mon, Aug 24 - Sat, Sep 12

12:41 am - 7:06 amLAX Los Angeles Los Angeles-ORD Chicago O'Hare Intl

4h 25mnonstop

1:50 pm - 4:15 pmORD Chicago O'Hare Intl-LAX Los Angeles Los Angeles

4h 25mnonstop

$267American Airlines

Mon, Aug 24 - Fri, Aug 28

7:13 pm - 7:16 amONT Ontario-ORD Chicago O'Hare Intl

10h 03m1 stop San Francisco

8:06 pm - 10:35 pmORD Chicago O'Hare Intl-ONT Ontario

4h 29mnonstop

$267United Airlines

Sat, Aug 22 - Wed, Sep 2

11:00 am - 10:30 pmONT Ontario-ORD Chicago O'Hare Intl

9h 30m1 stop San Francisco

8:06 pm - 10:35 pmORD Chicago O'Hare Intl-ONT Ontario

4h 29mnonstop

$267United Airlines

Sat, Aug 22 - Thu, Sep 10

1:06 pm - 9:33 pmONT Ontario-ORD Chicago O'Hare Intl

6h 27m1 stop Salt Lake City

1:51 pm - 8:05 pmORD Chicago O'Hare Intl-ONT Ontario

8h 14m1 stop Atlanta Hartsfield-Jackson

$268Delta

Sat, Aug 22 - Wed, Sep 9

1:06 pm - 9:33 pmONT Ontario-ORD Chicago O'Hare Intl

6h 27m1 stop Salt Lake City

5:30 am - 11:05 amORD Chicago O'Hare Intl-ONT Ontario

7h 35m1 stop Atlanta Hartsfield-Jackson

$268Delta

Recent direct flight deals from California to Chicago

Thu, Oct 8 - Wed, Oct 14

5:52 pm - 11:47 pmLAX Los Angeles Los Angeles-ORD Chicago O'Hare Intl

3h 55mnonstop

7:20 am - 9:55 amORD Chicago O'Hare Intl-LAX Los Angeles Los Angeles

4h 35mnonstop

$199Delta

Mon, Oct 12 - Sun, Oct 18

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

4h 13mnonstop

8:01 pm - 10:51 pmORD Chicago O'Hare Intl-LAX Los Angeles Los Angeles

4h 50mnonstop

$204Frontier

Wed, Oct 14 - Sun, Oct 18

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

4h 13mnonstop

8:01 pm - 10:51 pmORD Chicago O'Hare Intl-LAX Los Angeles Los Angeles

4h 50mnonstop

$204Frontier

Fri, Oct 16 - Mon, Oct 19

10:35 pm - 4:45 amLAX Los Angeles Los Angeles-ORD Chicago O'Hare Intl

4h 10mnonstop

6:00 am - 8:27 amORD Chicago O'Hare Intl-LAX Los Angeles Los Angeles

4h 27mnonstop

$207United Airlines

Wed, Sep 23 - Thu, Sep 24

12:30 am - 6:40 amLAX Los Angeles Los Angeles-ORD Chicago O'Hare Intl

4h 10mnonstop

3:00 pm - 5:37 pmORD Chicago O'Hare Intl-LAX Los Angeles Los Angeles

4h 37mnonstop

$214United Airlines

Fri, Sep 11 - Fri, Sep 18

1:20 pm - 7:59 pmLAX Los Angeles Los Angeles-ORD Chicago O'Hare Intl

4h 39mnonstop

9:10 pm - 11:36 pmORD Chicago O'Hare Intl-LAX Los Angeles Los Angeles

4h 26mnonstop

$217American Airlines

Fri, Sep 11 - Tue, Sep 15

5:12 pm - 11:30 pmLAX Los Angeles Los Angeles-ORD Chicago O'Hare Intl

4h 18mnonstop

6:55 am - 9:25 amORD Chicago O'Hare Intl-LAX Los Angeles Los Angeles

4h 30mnonstop

$217American Airlines

Tue, Nov 17 - Wed, Nov 18

6:05 am - 12:10 pmLAX Los Angeles Los Angeles-MDW Chicago Midway

4h 05mnonstop

3:45 pm - 6:10 pmMDW Chicago Midway-LAX Los Angeles Los Angeles

4h 25mnonstop

$217Southwest

Tue, Nov 17 - Tue, Nov 17

6:05 am - 12:10 pmLAX Los Angeles Los Angeles-MDW Chicago Midway

4h 05mnonstop

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

4h 35mnonstop

$217Southwest

Fri, Sep 18 - Fri, Sep 25

11:15 am - 5:23 pmLAX Los Angeles Los Angeles-ORD Chicago O'Hare Intl

4h 08mnonstop

7:07 am - 9:35 amORD Chicago O'Hare Intl-LAX Los Angeles Los Angeles

4h 28mnonstop

$217Delta

Useful Info

Low season	January
High season	June
Cheapest flight	$61

Best time to beat the crowds but there is an average 3% increase in price.

Most popular time to fly with an average 13% increase in price.

Flight from Ontario 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

Saint Joseph

Hammond

Portage

Lansing

Valparaiso

Chesterton

Munster

Schererville

Porter

Monticello

Saint John

Griffith

Everything you need to know for your flight to Chicago

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Complete your trip

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Origins

Other airports

Return flight deals

Cabin class types available on flights to California

First Class flights to Chicagofrom $564

Business Class flights to Chicagofrom $832

Premium Economy Class flights to Chicagofrom $877

Economy Class flights to Chicagofrom $197

$61 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

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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?

Everything you need to know for your flight to Chicago

Cabin class types available on flights to California

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

Find direct flights for Chicago

Flights to other popular destinations

Flights from domestic origins to Chicago

Choose which airport to fly into in Chicago

Find deals for your return flight