How does KAYAK find such low prices on flights from California to Chicago O'Hare Airport?

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 O'Hare Airport.

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

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Chicago O'Hare Airport 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 O'Hare Airport?

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 O'Hare Airport 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 O'Hare Airport?

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 O'Hare Airport from California up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

$97 CHEAP FLIGHTS from California to Chicago O'Hare (ORD)

Save 20% 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 O'Hare Intl

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 O'Hare Intl

Thu, Oct 8 - Mon, Oct 12

8:39 pm - 5:42 am

OAK

ORD

7h 03m

1 stop

6:50 am - 11:18 am

ORD

OAK

6h 28m

1 stop

$204Frontier

Sun, Oct 4 - Thu, Oct 8

8:39 pm - 5:42 am

OAK

ORD

7h 03m

1 stop

1:02 pm - 7:44 pm

ORD

OAK

8h 42m

1 stop

$214Frontier

Thu, Sep 24 - Sun, Sep 27

5:25 pm - 11:31 pm

LAX

ORD

4h 06mnonstop

6:56 pm - 9:31 pm

ORD

LAX

4h 35mnonstop

$237Delta

Mon, Aug 24 - Tue, Sep 1

1:29 pm - 11:59 pm

OAK

ORD

8h 30m

1 stop

2:18 pm - 9:28 pm

ORD

OAK

9h 10m

1 stop

$257Alaska Airlines

Wed, Sep 9 - Sat, Sep 12

6:00 pm - 8:30 am

ONT

ORD

12h 30m

2 stops

2:05 pm - 10:40 pm

ORD

ONT

10h 35m

2 stops

$280Delta

Sat, Aug 15 - Mon, Aug 17

1:18 pm - 9:52 pm

ONT

ORD

6h 34m

1 stop

8:06 pm - 10:35 pm

ORD

ONT

4h 29mnonstop

$282United Airlines

Fri, Sep 4 - Mon, Sep 7

6:25 am - 1:36 pm

SAN

ORD

29h 11m

1 stop

6:01 am - 8:32 am

ORD

SAN

4h 31mnonstop

$286Multiple Airlines

Fri, Oct 9 - Wed, Oct 14

4:55 pm - 10:59 pm

SAN

ORD

4h 04mnonstop

8:16 pm - 10:41 pm

ORD

SAN

4h 25mnonstop

$287United Airlines

Fri, Sep 11 - Sun, Sep 13

6:25 am - 10:01 am

SAN

ORD

25h 36m

1 stop

8:17 pm - 11:00 pm

ORD

SAN

4h 43mnonstop

$288Multiple Airlines

Wed, Aug 26 - Tue, Sep 1

1:03 pm - 7:21 pm

SAN

ORD

4h 18mnonstop

6:00 am - 1:19 pm

ORD

SAN

9h 19m

1 stop

$294Alaska Airlines

Useful Info

Low season	January
High season	July
Cheapest flight	$97

Best time to beat the crowds with an average 11% drop in price.

Most popular time to fly with an average 15% 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 O'Hare Airport?
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 O'Hare Airport.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from California to Chicago O'Hare Airport?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Chicago O'Hare Airport 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 O'Hare Airport?
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 O'Hare Airport 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 O'Hare Airport?
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 O'Hare Airport from California up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Gurnee

Merrillville

South Haven

Oak Brook

Saint Joseph

Tinley Park

Hammond

Elk Grove Village

Des Plaines

Hoffman Estates

Portage

South Holland

Willowbrook

Lansing

Delavan

Northbrook

Alsip

Lisle

Elmhurst

Pleasant Prairie

Everything you need to know for your flight to O'Hare Intl

Airports

Cabin class

Complete your trip

Direct Flights

Flights to other cities

Origins

Other airports

Return flight deals

Information on your arrival and departure airports

Chicago O'Hare Airport (ORD)

ORD

$97 Find Cheap Flights from California to Chicago O'Hare Airport - Compare and Save

Cheap Flights from California to O'Hare Intl

Recent round-trip flight deals from California to O'Hare Intl

Recent one-way flight deals from California to O'Hare Intl

Recent last minute flight deals from California to O'Hare Intl

Recent direct flight deals from California to O'Hare Intl

Good to know

Low season

High season

Cheapest flight

Flights from California to O'Hare Intl: the best tips from KAYAK users

FAQs for booking California to Chicago O'Hare Airport flights

Traveling to a place near O'Hare Intl?

Everything you need to know for your flight to O'Hare Intl

Information on your arrival and departure airports

Cabin class types available on flights to O'Hare Intl

Complete your trip to O'Hare Intl with a hotel stay or car rental

Find direct flights for O'Hare Intl

Flights to other popular destinations

Flights from domestic origins to California

Choose which airport to fly into in Chicago

Find deals for your return flight