How many flights depart from Illinois to California on average per week?

As of May 2026, there are 1,862 flights per week flying from Illinois to California. The most common day of the week flights depart is Sun, with 20% of flights taking off on this day.

What is the cheapest airline that flies from Illinois to California?

Frontier, Delta, and United Airlines are the most popular carriers operating from Illinois to California

What airlines fly to California?

American Airlines, United Airlines and Frontier are the top three most popular airlines that fly to California from Illinois according to our data. American Airlines is the first choice among our users, with 43% of people opting to fly with this airline when traveling to California. Keep in mind that there are 9 different airlines that fly to California on a routine basis, so you have a few additional options to choose from.

How many flights depart from Illinois to California on average per day?

As of May 2026, 266 flights take off from Illinois and land in California each day. The most common flight departure time for this route is 6:00PM, with 34% of daily flights taking off in the evening.

How long is the flight from Illinois to California?

Flight times from Illinois to California vary, but if you’re flying out of Chicago and flying into Los Angeles (one of the most popular routes), then the duration is 4h 15m on average. Another popular route from Illinois to California is flying from Peoria to Los Angeles, which will take roughly 6h 42m. Keep in mind that layovers or delays could extend your travel time.

When did momondo last update prices for flights from Illinois to California?

Prices for flights from Illinois to California were last updated today.

How many operators does momondo search for flights from Illinois to California?

There are 10 operators available for flights from Illinois to California as of May 2026.

How old do you have to be to fly from Illinois to California?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Illinois to California.

What documentation or ID do you need to fly to California?

The travel and health documents you'll need for your trip to California may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at California. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$106 Cheap Flights from Illinois to California in 2026

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Find the cheapest flights from Illinois to California

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One-way

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Cheap round-trip flights

Enter your travel dates to find the best prices.

9:07 pm - 11:43 pm

ORD

LAX

4h 36mnonstop

11:59 pm - 6:19 am

LAX

ORD

4h 20mnonstop

$186Frontier

Thu, Aug 20 - Mon, Aug 24

9:13 pm - 11:57 pm

ORD

LAX

4h 44mnonstop

11:59 pm - 6:17 am

LAX

ORD

4h 18mnonstop

$192Frontier

Thu, Aug 13 - Mon, Aug 17

9:13 pm - 11:57 pm

ORD

LAX

4h 44mnonstop

11:59 pm - 6:17 am

LAX

ORD

4h 18mnonstop

$193Frontier

Sat, Jul 11 - Tue, Jul 14

6:00 am - 8:19 am

ORD

LAX

4h 19mnonstop

9:25 am - 3:54 pm

LAX

ORD

4h 29mnonstop

$197American Airlines

Tue, Aug 18 - Tue, Aug 25

8:45 pm - 11:05 pm

MDW

LAX

4h 20mnonstop

11:55 pm - 5:55 am

LAX

MDW

4h 00mnonstop

$197Southwest

Tue, Aug 25 - Tue, Sep 1

9:15 pm - 11:45 pm

MDW

LAX

4h 30mnonstop

5:00 pm - 11:00 pm

LAX

MDW

4h 00mnonstop

$201Southwest

Wed, Jul 15 - Wed, Jul 22

8:18 pm - 10:51 pm

ORD

ONT

4h 33mnonstop

6:10 am - 12:25 pm

ONT

ORD

4h 15mnonstop

$219United Airlines

Wed, Jul 15 - Wed, Jul 22

8:18 pm - 10:51 pm

ORD

ONT

4h 33mnonstop

1:18 pm - 10:49 pm

ONT

ORD

7h 31m

1 stop

$229United Airlines

Wed, Jul 15 - Wed, Jul 22

6:00 am - 2:04 pm

ORD

SFO

10h 04m

1 stop

7:55 am - 7:37 pm

SFO

ORD

9h 42m

1 stop

$294Alaska Airlines

Wed, Jul 1 - Sat, Jul 4

9:00 pm - 11:58 pm

ORD

SFO

4h 58mnonstop

6:04 am - 12:31 pm

SFO

ORD

4h 27mnonstop

$295American Airlines

Mon, Jun 29 - Tue, Jul 7

United Airlines flights from Illinois to California

Our best United Airlines deals on Illinois to California flight tickets

United Airlines

Jul 15

ORD8:18 pmChicago O'Hare Intl

4h 33m

ONT10:51 pmOntario

Jul 22

ONT6:10 amOntario

4h 15m

ORD12:25 pmChicago O'Hare Intl

$219

United Airlines

Jul 15

ORD8:18 pmChicago O'Hare Intl

4h 33m

ONT10:51 pmOntario

Jul 22

ONT1:18 pmOntario

7h 31m

1 stop

ORD10:49 pmChicago O'Hare Intl

$229

United Airlines

Jul 8

ORD6:00 amChicago O'Hare Intl

4h 29m

LAX8:29 amLos Angeles Los Angeles

Jul 22

LAX5:10 amLos Angeles Los Angeles

4h 17m

ORD11:27 amChicago O'Hare Intl

$239

Delta flights from Illinois to California

Our best Delta deals on Illinois to California flight tickets

Delta

Jul 7

ORD2:42 pmChicago O'Hare Intl

4h 32m

LAX5:14 pmLos Angeles Los Angeles

Jul 8

LAX5:15 pmLos Angeles Los Angeles

4h 03m

ORD11:18 pmChicago O'Hare Intl

$201

Delta

Jul 7

ORD2:42 pmChicago O'Hare Intl

4h 32m

LAX5:14 pmLos Angeles Los Angeles

Jul 14

LAX7:15 amLos Angeles Los Angeles

9h 14m

1 stop

ORD6:29 pmChicago O'Hare Intl

$211

Delta

Jul 8

ORD6:55 amChicago O'Hare Intl

8h 00m

1 stop

LAX12:55 pmLos Angeles Los Angeles

Jul 14

LAX11:41 amLos Angeles Los Angeles

8h 07m

1 stop

ORD9:48 pmChicago O'Hare Intl

$221

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoLos Angeles

ORD - LAX

ORDLAX

Chicago O'Hare Intl

Thu 8/20

9:07 pm-11:43 pm

Nonstop4h 36m

Los Angeles Los Angeles

Mon 8/24

11:59 pm-6:19 am

Nonstop4h 20m

$186

ChicagoLos Angeles

ORD - LAX

ORDLAX

Chicago O'Hare Intl

Thu 8/13

9:13 pm-11:57 pm

Nonstop4h 44m

Los Angeles Los Angeles

Mon 8/17

11:59 pm-6:17 am

Nonstop4h 18m

$192

ChicagoLos Angeles

ORD - LAX

ORDLAX

Chicago O'Hare Intl

Sat 7/11

9:13 pm-11:57 pm

Nonstop4h 44m

Los Angeles Los Angeles

Tue 7/14

11:59 pm-6:17 am

Nonstop4h 18m

$193

ChicagoLos Angeles

ORD - LAX

ORDLAX

Chicago O'Hare Intl

Tue 8/18

6:00 am-8:19 am

Nonstop4h 19m

Los Angeles Los Angeles

Tue 8/25

9:25 am-3:54 pm

Nonstop4h 29m

$197

Quickest round-trip

ChicagoLos Angeles

MDW - LAX

MDWLAX

Chicago Midway

Tue 8/25

8:45 pm-11:05 pm

Nonstop4h 20m

Los Angeles Los Angeles

Tue 9/1

11:55 pm-5:55 am

Nonstop4h 00m

$197

ChicagoLos Angeles

MDW - LAX

MDWLAX

Chicago Midway

Wed 7/15

9:15 pm-11:45 pm

Nonstop4h 30m

Los Angeles Los Angeles

Wed 7/22

5:00 pm-11:00 pm

Nonstop4h 00m

$201

ChicagoOntario

ORD - ONT

ORDONT

Chicago O'Hare Intl

Wed 7/15

8:18 pm-10:51 pm

Nonstop4h 33m

Ontario

Wed 7/22

6:10 am-12:25 pm

Nonstop4h 15m

$219

ChicagoOntario

ORD - ONT

ORDONT

Chicago O'Hare Intl

Wed 7/15

8:18 pm-10:51 pm

Nonstop4h 33m

Ontario

Wed 7/22

1:18 pm-10:49 pm

1 stop7h 31m

$229

ChicagoSan Francisco

ORD - SFO

ORDSFO

Chicago O'Hare Intl

Wed 7/1

6:00 am-2:04 pm

1 stop10h 04m

San Francisco

Sat 7/4

7:55 am-7:37 pm

1 stop9h 42m

$294

ChicagoSan Francisco

ORD - SFO

ORDSFO

Chicago O'Hare Intl

Mon 6/29

9:00 pm-11:58 pm

Nonstop4h 58m

San Francisco

Tue 7/7

6:04 am-12:31 pm

Nonstop4h 27m

$295

Flights are sorted by cheapest round-trip flights first.

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How to get the cheapest flight ticket from Illinois to California

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest month to fly to California?

The month of September is another great option to travel to California, with average flight prices from Illinois averaging around $306.

What is the cheapest day to depart on your flight to California?

The cheapest day to depart from Illinois to California is on a Thursday. Travelers who choose to depart for California on a Thursday will often find tickets for as low as $343. Be sure to avoid booking your departure on a Monday as prices are generally higher than usual. According to our data, the average ticket price to California on Monday is $460.

What is the cheapest time of day to depart on your flight to California?

The cheapest time of day to fly to California is in the evening when flights can be purchased for as low as $361. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $819 on average. Flights to California from Illinois in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.

What is the cheapest Illinois to California flight route?

Fly from Chicago O'Hare Intl to Los Angeles for the best Illinois - California flight prices

How far in advance should I book a flight from Illinois to California?

You are more likely to see cheaper flights to California from Illinois when booking weeks ahead of your departure date. In general, you can expect to find flights to California for around $296 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to California from Illinois for as low as $249 on momondo.

What cabin class options are available on Illinois to California flights?

There are 4 cabin classes available to choose from on Illinois to California flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Illinois to California flights?

You could potentially save up to 30% on your flight if you consider stops on a Illinois to California flight.

Cheap Illinois to California flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Illinois to California

Best Price Found	$168
Fastest flight time	3h 24m
Direct flights	Every day
Airports in California	418 airports

The best one-way flight to California from Illinois in the past 72 hours is $168. The best round-trip flight deal from Illinois to California found on momondo in the last 72 hours is $284.

The fastest flight from Illinois to California takes 3h 24m

Direct flights go from Illinois to California every day.

There are 418 airports in California. From Illinois there are direct flights to Las Vegas Harry Reid Intl (LAS).

Search flight deals

Frequently asked questions about flying from Illinois to California

When did momondo last update prices for flights from Illinois to California?
Prices for flights from Illinois to California were last updated today.
How many operators does momondo search for flights from Illinois to California?
There are 10 operators available for flights from Illinois to California as of May 2026.
How old do you have to be to fly from Illinois to California?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Illinois to California.
What documentation or ID do you need to fly to California?
The travel and health documents you'll need for your trip to California may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at California. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Illinois to California?
Based on momondo bookings for flights between Illinois and California, the leading plane model is Airbus A321neo, making up 18.47% of the total bookings. Other popular models include Boeing 737-800 with 16.75%, Airbus A321-100/200 with 11.11%, and Boeing 757-300 with 10.77%.

Best airlines flying from Illinois to California

Compare and see reviews for airlines that fly from Illinois to California with momondo

Airline	Rating	Free Cancellation	Price
Spirit Airlines	PriceFrom $84	Free Cancellation	Rating 6.2	Search Spirit Airlines flights
Frontier	PriceFrom $87	Free Cancellation	Rating 5.6 2,929 reviews	Search Frontier flights
Hawaiian Airlines	PriceFrom $108	Free Cancellation	Rating 7.8 2,833 reviews	Search Hawaiian Airlines flights
Delta	PriceFrom $128	Free Cancellation	Rating 7.9 8,415 reviews	Search Delta flights
Southwest	PriceFrom $138	Free Cancellation	Rating 8.0 4,262 reviews	Search Southwest flights
Alaska Airlines	PriceFrom $139	Free Cancellation	Rating 7.9 12,439 reviews	Search Alaska Airlines flights
JetBlue	PriceFrom $147	Free Cancellation	Rating 7.1 2,984 reviews	Search JetBlue flights
American Airlines	PriceFrom $156	Free Cancellation	Rating 7.1 11,645 reviews	Search American Airlines flights
United Airlines	PriceFrom $157	Free Cancellation	Rating 7.4 9,770 reviews	Search United Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Illinois to California?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Illinois to California. momondo saves you time and could save you money on your trip.

Can I find flights from Illinois to California with flexible booking policies on momondo?

Yes. All flights to California from Illinois on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Illinois to California?

Once all potential Illinois to California flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Illinois to California right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Illinois to California now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to California and let you know when they change.

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Popular cities in California

Flights to New Yorkfrom $64

Flights to Los Angelesfrom $50

Flights to Orlandofrom $58

Flights to Miamifrom $111

Flights to Chicagofrom $68

Flights to San Franciscofrom $66

Flights to Las Vegasfrom $60

Flights to Washington, D.C.from $56

Flights to Bostonfrom $66

Flights to Atlantafrom $81

Flights to Fort Lauderdalefrom $58

Flights to Dallasfrom $56

Cheap flights from Illinois to California from $106

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to California departing on 8/20. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Our best United Airlines deals on Illinois to California flight tickets

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Our best Delta deals on Illinois to California flight tickets

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See travel insights to California from

How to get the cheapest flight ticket from Illinois to California

What is the cheapest month to fly to California?

What is the cheapest day to depart on your flight to California?

What is the cheapest time of day to depart on your flight to California?

What is the cheapest Illinois to California flight route?

How far in advance should I book a flight from Illinois to California?

What cabin class options are available on Illinois to California flights?

Can stopping save me money on Illinois to California flights?

What is the cheapest airline that flies from Illinois to California?

What airlines fly to California?

How many flights depart from Illinois to California on average per day?

How many flights depart from Illinois to California on average per week?

How long is the flight from Illinois to California?

Cheap Illinois to California flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Illinois to California

Best Price Found

Fastest flight time

Direct flights

Airports in California

Frequently asked questions about flying from Illinois to California

Best airlines flying from Illinois to California

Compare and see reviews for airlines that fly from Illinois to California with momondo

Why use momondo?

An easier way to manage your California trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to California

Popular cities in California

Popular flights according to clicks in the last 7 days on momondo

Illinois flight routes

According to popular flight searches on momondo this year

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According to popular flight searches on momondo this year

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