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

As of February 2026, there are 1,680 flights per week flying from Illinois to California. The most common day of the week flights depart is Wed, with 17% of flights taking off on this day.

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

As of February 2026, 240 flights take off from Illinois and land in California each day. The most common flight departure time for this route is 4:00PM, with 39% of daily flights taking off at noon.

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 45% of people opting to fly with this airline when traveling to California. Keep in mind that there are 10 different airlines that fly to California on a routine basis, so you have a few additional options to choose from.

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

United Airlines, Southwest, and Alaska Airlines are the most popular carriers operating from Illinois to California

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 18m on average. Another popular route from Illinois to California is flying from Moline to Los Angeles, which will take roughly 6h 45m. 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 11 operators available for flights from Illinois to California as of February 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.

$66 Cheap Flights from Illinois to California in 2026

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Round-trip

One-way

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Cheap round-trip flights

Enter your travel dates to find the best prices.

3:21 pm - 9:32 pm

STL

LAS

8h 11m

1 stop

3:48 pm - 9:13 pm

LAS

STL

3h 25mnonstop

$142Frontier

Mon, Apr 20 - Fri, Apr 24

9:55 pm - 11:37 pm

STL

LAS

3h 42mnonstop

3:35 pm - 9:00 pm

LAS

STL

3h 25mnonstop

$143Frontier

Thu, Apr 23 - Thu, Apr 30

6:20 am - 5:40 pm

ORD

LAS

13h 20m

1 stop

12:18 am - 5:50 am

LAS

ORD

3h 32mnonstop

$156Spirit Airlines

Tue, May 19 - Thu, May 21

9:45 am - 7:49 pm

ORD

LAS

12h 04m

1 stop

6:00 am - 8:19 pm

LAS

ORD

12h 19m

1 stop

$157Spirit Airlines

Tue, Apr 14 - Wed, Apr 22

9:00 pm - 11:33 pm

ORD

SAN

4h 33mnonstop

1:03 pm - 7:32 pm

SAN

ORD

4h 29mnonstop

$168American Airlines

Fri, Apr 10 - Wed, Apr 15

8:20 pm - 10:59 pm

ORD

SAN

4h 39mnonstop

10:30 pm - 4:35 am

SAN

ORD

4h 05mnonstop

$170United Airlines

Mon, Mar 30 - Tue, Apr 7

8:20 pm - 10:59 pm

ORD

SAN

4h 39mnonstop

4:49 pm - 10:59 pm

SAN

ORD

4h 10mnonstop

$175United Airlines

Fri, Apr 10 - Mon, Apr 13

8:55 pm - 10:50 pm

MDW

LAS

3h 55mnonstop

11:55 pm - 5:25 am

LAS

MDW

3h 30mnonstop

$179Southwest

Tue, Apr 14 - Wed, Apr 15

10:10 am - 12:40 pm

MDW

LAX

4h 30mnonstop

5:15 am - 11:15 am

LAX

MDW

4h 00mnonstop

$181Southwest

Tue, Apr 28 - Wed, Apr 29

6:04 am - 1:44 pm

ORD

PSP

9h 40m

1 stop

6:01 am - 11:59 am

PSP

ORD

3h 58mnonstop

$292American Airlines

Sat, Apr 11 - Wed, Apr 15

Southwest flights from Illinois to California

Our best Southwest deals on Illinois to California flight tickets

Southwest

Apr 14

MDW8:55 pmChicago Midway

3h 55m

LAS10:50 pmLas Vegas Harry Reid Intl

Apr 15

LAS11:55 pmLas Vegas Harry Reid Intl

3h 30m

MDW5:25 amChicago Midway

$179

Southwest

Apr 28

MDW10:10 amChicago Midway

4h 30m

LAX12:40 pmLos Angeles

Apr 29

LAX5:15 amLos Angeles

4h 00m

MDW11:15 amChicago Midway

$181

Southwest

Apr 7

MDW8:55 pmChicago Midway

3h 55m

LAS10:50 pmLas Vegas Harry Reid Intl

Apr 14

LAS11:55 pmLas Vegas Harry Reid Intl

3h 30m

MDW5:25 amChicago Midway

$186

Delta flights from Illinois to California

Our best Delta deals on Illinois to California flight tickets

Delta

Apr 21

ORD2:09 pmChicago O'Hare Intl

6h 40m

1 stop

LAX6:49 pmLos Angeles

Apr 22

LAX11:20 pmLos Angeles

6h 41m

1 stop

ORD8:01 amChicago O'Hare Intl

$217

Delta

Apr 13

MDW9:29 amChicago Midway

9h 25m

1 stop

LAX4:54 pmLos Angeles

Apr 22

LAX11:20 pmLos Angeles

7h 27m

1 stop

MDW8:47 amChicago Midway

$226

Delta

Mar 11

ORD2:38 pmChicago O'Hare Intl

10h 31m

1 stop

SAN11:09 pmSan Diego

Mar 16

SAN10:30 pmSan Diego

8h 00m

1 stop

ORD8:30 amChicago O'Hare Intl

$277

Fly from

Fly to

Route

Depart

Return

Price

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Mon 4/20

3:21 pm-9:32 pm

1 stop8h 11m

Las Vegas Harry Reid Intl

Fri 4/24

3:48 pm-9:13 pm

Nonstop3h 25m

$142

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Thu 4/23

9:55 pm-11:37 pm

Nonstop3h 42m

Las Vegas Harry Reid Intl

Thu 4/30

3:35 pm-9:00 pm

Nonstop3h 25m

$143

ChicagoLas Vegas

ORD - LAS

ORDLAS

Chicago O'Hare Intl

Tue 5/19

6:20 am-5:40 pm

1 stop13h 20m

Las Vegas Harry Reid Intl

Thu 5/21

12:18 am-5:50 am

Nonstop3h 32m

$156

ChicagoLas Vegas

ORD - LAS

ORDLAS

Chicago O'Hare Intl

Tue 4/14

9:45 am-7:49 pm

1 stop12h 04m

Las Vegas Harry Reid Intl

Wed 4/22

6:00 am-8:19 pm

1 stop12h 19m

$157

ChicagoSan Diego

ORD - SAN

ORDSAN

Chicago O'Hare Intl

Fri 4/10

9:00 pm-11:33 pm

Nonstop4h 33m

San Diego

Wed 4/15

1:03 pm-7:32 pm

Nonstop4h 29m

$168

ChicagoSan Diego

ORD - SAN

ORDSAN

Chicago O'Hare Intl

Mon 3/30

8:20 pm-10:59 pm

Nonstop4h 39m

San Diego

Tue 4/7

10:30 pm-4:35 am

Nonstop4h 05m

$170

ChicagoSan Diego

ORD - SAN

ORDSAN

Chicago O'Hare Intl

Fri 4/10

8:20 pm-10:59 pm

Nonstop4h 39m

San Diego

Mon 4/13

4:49 pm-10:59 pm

Nonstop4h 10m

$175

ChicagoLas Vegas

MDW - LAS

MDWLAS

Chicago Midway

Tue 4/14

8:55 pm-10:50 pm

Nonstop3h 55m

Las Vegas Harry Reid Intl

Wed 4/15

11:55 pm-5:25 am

Nonstop3h 30m

$179

ChicagoLos Angeles

MDW - LAX

MDWLAX

Chicago Midway

Tue 4/28

10:10 am-12:40 pm

Nonstop4h 30m

Los Angeles

Wed 4/29

5:15 am-11:15 am

Nonstop4h 00m

$181

ChicagoPalm Springs

ORD - PSP

ORDPSP

Chicago O'Hare Intl

Sat 4/11

6:04 am-1:44 pm

1 stop9h 40m

Palm Springs

Wed 4/15

6:01 am-11:59 am

Nonstop3h 58m

$292

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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 August is another great option to travel to California, with average flight prices from Illinois averaging around $242.

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

The cheapest day to depart from Illinois to California is on a Friday. Travelers who choose to depart for California on a Friday will often find tickets for as low as $322. 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 $462.

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 morning when flights can be purchased for as low as $325. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $661 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 Midway to San Diego for the best Illinois - California flight prices

How far in advance should I book a flight 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 $282 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 $241 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?

No. A direct flight is the cheapest option for a flight between 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	$78
Fastest flight time	3h 25m
Direct flights	Every day
Airports in California	418 airports

The best one-way flight to California from Illinois in the past 72 hours is $78. The best round-trip flight deal from Illinois to California found on momondo in the last 72 hours is $209.

The fastest flight from Illinois to California takes 3h 25m

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

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 11 operators available for flights from Illinois to California as of February 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 19.54% of the total bookings. Other popular models include Boeing 737-800 with 18.85%, Boeing 737 MAX 8 with 10.54%, and Boeing 757-300 with 10.51%.

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 $57	Free Cancellation	Rating 6.3 8,493 reviews	Search Spirit Airlines flights
Frontier	PriceFrom $78	Free Cancellation	Rating 5.7 3,040 reviews	Search Frontier flights
Hawaiian Airlines	PriceFrom $108	Free Cancellation	Rating 7.8 2,836 reviews	Search Hawaiian Airlines flights
Sun Country Air	PriceFrom $112	Free Cancellation	Rating 6.8 340 reviews	Search Sun Country Air flights
Delta	PriceFrom $128	Free Cancellation	Rating 7.9 8,237 reviews	Search Delta flights
Southwest	PriceFrom $138	Free Cancellation	Rating 8.0 4,299 reviews	Search Southwest flights
Alaska Airlines	PriceFrom $139	Free Cancellation	Rating 8.0 11,959 reviews	Search Alaska Airlines flights
American Airlines	PriceFrom $156	Free Cancellation	Rating 7.2 11,353 reviews	Search American Airlines flights
United Airlines	PriceFrom $157	Free Cancellation	Rating 7.4 9,348 reviews	Search United Airlines flights
JetBlue	PriceFrom $183	Free Cancellation	Rating 7.2 2,896 reviews	Search JetBlue 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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Flights to New Yorkfrom $56

Flights to Los Angelesfrom $52

Flights to Miamifrom $36

Flights to Orlandofrom $56

Flights to Chicagofrom $53

Flights to San Franciscofrom $56

Flights to Las Vegasfrom $30

Flights to Washington, D.C.from $56

Flights to Bostonfrom $75

Flights to Atlantafrom $49

Flights to Dallasfrom $54

Flights to Seattlefrom $48

Cheap flights from Illinois to California from $66

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 4/25. 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 Southwest 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 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

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

California flight routes

According to popular flight searches on momondo this year

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