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. Visit our flight page for the latest deals!>/a>

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. Visit our flight page for the latest deals!>/a>

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. Visit our flight page for the latest deals!>/a>

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. Visit our flight page for the latest deals!>/a>

$108 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

Sat, Jul 4 - Wed, Jul 15

11:59 pm - 6:19 am

LAX

ORD

4h 20mnonstop

9:13 pm - 11:57 pm

ORD

LAX

4h 44mnonstop

$223Frontier

Tue, Jul 14 - Tue, Jul 28

6:30 am - 8:52 pm

LAX

ORD

12h 22m

1 stop

9:57 pm - 8:55 am

ORD

LAX

12h 58m

1 stop

$224Frontier

Fri, Jul 31 - Tue, Aug 4

7:59 am - 6:57 pm

LAS

ORD

8h 58m

1 stop

7:15 am - 9:23 am

ORD

LAS

4h 08mnonstop

$229Multiple Airlines

Thu, Oct 8 - Tue, Oct 13

6:05 am - 11:57 am

LAS

ORD

3h 52mnonstop

2:21 pm - 7:28 pm

ORD

LAS

7h 07m

1 stop

$231Multiple Airlines

Wed, Aug 12 - Mon, Aug 17

1:06 pm - 9:30 pm

ONT

ORD

6h 24m

1 stop

7:44 pm - 11:34 pm

ORD

ONT

5h 50m

1 stop

$298Delta

Tue, Jul 14 - Wed, Jul 15

6:10 pm - 5:00 am

BUR

ORD

8h 50m

1 stop

7:20 am - 1:13 pm

ORD

BUR

7h 53m

1 stop

$301Alaska Airlines

Thu, Aug 6 - Tue, Aug 11

1:06 pm - 9:30 pm

ONT

ORD

6h 24m

1 stop

2:00 pm - 10:45 pm

ORD

ONT

10h 45m

2 stops

$303Delta

Mon, Jul 6 - Wed, Jul 15

7:09 am - 5:00 am

BUR

ORD

19h 51m

1 stop

7:20 am - 1:13 pm

ORD

BUR

7h 53m

1 stop

$305Alaska Airlines

Thu, Aug 27 - Sun, Aug 30

4:14 pm - 11:59 pm

SNA

ORD

5h 45m

1 stop

5:00 am - 9:07 am

ORD

SNA

6h 07m

1 stop

$344United Airlines

Tue, Jun 30 - Tue, Jul 7

4:00 pm - 12:44 am

SNA

ORD

6h 44m

1 stop

5:00 am - 9:07 am

ORD

SNA

6h 07m

1 stop

$345United Airlines

Useful Info

Low season	January
High season	July
Cheapest flight	$108

Best time to beat the crowds but there is an average 8% increase in price.

Flight from Ontario to Chicago O'Hare Airport

CupcakeFlew with Alaska Airlines

SAN

ORD

Apr 2026

Please bring a water bottle for hydration during the flight.

StephenFlew with United Airlines

SMF

ORD

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

SAN

ORD

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

LAX

ORD

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

SFO

ORD

Oct 2024

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

KimFlew with American Airlines

SNA

ORD

Nov 2024

Bring extra foods and buy extra drinks bring your meds

ShirleyFlew with United Airlines

LAX

ORD

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

Schererville

Munster

Chesterton

Porter

Monticello

Saint John

Griffith

Everything you need to know for your flight to Chicago

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Return flight deals

Cabin class types available on flights to California

First Class flights to Chicagofrom $478

Business Class flights to Chicagofrom $788

Premium Economy Class flights to Chicagofrom $471

Economy Class flights to Chicagofrom $219

$108 Find Cheap Flights from California to Chicago

KAYAK searches hundreds of travel sites at once for deals on flights to Chicago

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

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

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