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

As of September 2026, 2,034 flights take off from California and land in Illinois each week. The most common flight departure day for this route is Sun, with 18% of weekly flights taking off on this day.

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

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

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

As of September 2026, there are 290 flights per day flying from California to Illinois. The most common time of day flights depart is 10:00AM, with 48% of flights taking off at noon.

What airlines fly to Illinois?

United Airlines, American Airlines and Frontier are the top three most popular airlines that fly to Illinois from California according to our data. United Airlines is the first choice among our users, with 41% of people opting to fly with this airline when traveling to Illinois. Keep in mind that there are 7 different airlines that fly to Illinois on a routine basis, so you have a few additional options to choose from.

How long is the flight from California to Illinois?

The flight from California to Illinois depends on which airports you’re departing and arriving from and whether or not you have a layover. If you fly from Los Angeles (a popular airport in California) to Chicago O'Hare Intl Airport (the most popular airport in Illinois), then the flight time is 3h 55m on average. If you fly from Santa Ana (another popular airport in California) to Chicago O'Hare Intl Airport, then the average flight time is 4h 03m.

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

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

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

As of September 2026, there are 7 operators available to choose from for flights from California to Illinois.

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

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from California to Illinois.

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

The required travel and health documents for your Illinois trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Illinois. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$99 Cheap Flights from California to Illinois in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from California to Illinois

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

11:29 pm - 5:16 amLAS Las Vegas Harry Reid Intl-ORD Chicago O'Hare Intl

3h 47mnonstop

3:30 pm - 5:46 pmORD Chicago O'Hare Intl-LAS Las Vegas Harry Reid Intl

4h 16mnonstop

$176Frontier

Fri, Oct 16 - Mon, Oct 19

6:30 am - 6:34 amLAS Las Vegas Harry Reid Intl-ORD Chicago O'Hare Intl

22h 04m1 stop Los Angeles

8:01 pm - 11:17 pmORD Chicago O'Hare Intl-LAS Las Vegas Harry Reid Intl

29h 16m1 stop Los Angeles

$176Frontier

Tue, Oct 13 - Fri, Oct 16

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

4h 13mnonstop

3:49 pm - 9:54 pmORD Chicago O'Hare Intl-LAX Los Angeles

8h 05m1 stop Seattle/Tacoma Intl

$198Multiple Airlines

Sat, Oct 10 - Wed, Oct 14

8:45 am - 5:05 pmLAX Los Angeles-ORD Chicago O'Hare Intl

6h 20m1 stop Denver Intl

8:50 am - 11:23 amORD Chicago O'Hare Intl-LAX Los Angeles

4h 33mnonstop

$204United Airlines

Sat, Oct 3 - Tue, Oct 6

8:10 pm - 6:20 amLAX Los Angeles-ORD Chicago O'Hare Intl

8h 10m1 stop Seattle/Tacoma Intl

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

4h 50mnonstop

$208Multiple Airlines

Fri, Oct 2 - Sat, Oct 10

2:21 pm - 8:35 pmLAX Los Angeles-ORD Chicago O'Hare Intl

4h 14mnonstop

1:00 pm - 3:29 pmORD Chicago O'Hare Intl-LAX Los Angeles

4h 29mnonstop

$217United Airlines

Thu, Oct 29 - Mon, Nov 2

7:35 am - 1:38 pmLAX Los Angeles-ORD Chicago O'Hare Intl

4h 03mnonstop

4:30 pm - 7:02 pmORD Chicago O'Hare Intl-LAX Los Angeles

4h 32mnonstop

$217Delta

Tue, Oct 13 - Sat, Nov 7

3:00 pm - 9:02 pmLAX Los Angeles-ORD Chicago O'Hare Intl

4h 02mnonstop

9:30 am - 11:58 amORD Chicago O'Hare Intl-LAX Los Angeles

4h 28mnonstop

$217Delta

Sat, Oct 17 - Tue, Nov 3

9:59 am - 11:57 pmLAX Los Angeles-ORD Chicago O'Hare Intl

11h 58m1 stop Fort Lauderdale

2:42 pm - 11:53 pmORD Chicago O'Hare Intl-LAX Los Angeles

11h 11m1 stop Fort Lauderdale

$217JetBlue

Tue, Nov 3 - Sat, Nov 7

9:59 am - 11:57 pmLAX Los Angeles-ORD Chicago O'Hare Intl

11h 58m1 stop Fort Lauderdale

2:42 pm - 11:56 pmORD Chicago O'Hare Intl-LAX Los Angeles

11h 14m1 stop Fort Lauderdale

$217JetBlue

Tue, Nov 3 - Thu, Nov 5

Cheap last minute flights

Enter your travel dates to find the best prices.

11:50 pm - 5:38 amLAS Las Vegas Harry Reid Intl-ORD Chicago O'Hare Intl

3h 48mnonstop

1:21 pm - 3:30 pmORD Chicago O'Hare Intl-LAS Las Vegas Harry Reid Intl

4h 09mnonstop

$189Frontier

Sat, Sep 12 - Wed, Oct 7

11:50 pm - 5:38 amLAS Las Vegas Harry Reid Intl-ORD Chicago O'Hare Intl

3h 48mnonstop

6:30 am - 7:38 pmORD Chicago O'Hare Intl-LAS Las Vegas Harry Reid Intl

15h 08m1 stop Denver Intl

$195Frontier

Wed, Sep 9 - Sat, Sep 12

11:50 pm - 5:38 amLAS Las Vegas Harry Reid Intl-ORD Chicago O'Hare Intl

3h 48mnonstop

7:20 am - 2:11 pmORD Chicago O'Hare Intl-LAS Las Vegas Harry Reid Intl

8h 51m1 stop San Diego

$255Multiple Airlines

Sat, Sep 12 - Wed, Sep 16

11:50 pm - 5:38 amLAS Las Vegas Harry Reid Intl-ORD Chicago O'Hare Intl

3h 48mnonstop

7:20 am - 2:11 pmORD Chicago O'Hare Intl-LAS Las Vegas Harry Reid Intl

8h 51m1 stop San Diego

$255Multiple Airlines

Sat, Sep 12 - Wed, Sep 16

8:00 am - 2:20 pmLAX Los Angeles-ORD Chicago O'Hare Intl

4h 20mnonstop

8:30 pm - 11:13 pmORD Chicago O'Hare Intl-LAX Los Angeles

4h 43mnonstop

$271American Airlines

Wed, Sep 9 - Tue, Oct 13

5:25 pm - 11:31 pmLAX Los Angeles-ORD Chicago O'Hare Intl

4h 06mnonstop

2:45 pm - 5:16 pmORD Chicago O'Hare Intl-LAX Los Angeles

4h 31mnonstop

$271Delta

Wed, Sep 9 - Wed, Oct 14

11:59 pm - 8:48 amLAX Los Angeles-MDW Chicago Midway

6h 49m1 stop Minneapolis St Paul

1:27 pm - 7:52 pmMDW Chicago Midway-LAX Los Angeles

8h 25m1 stop Detroit Metropolitan Wayne County

$291Delta

Wed, Sep 9 - Tue, Oct 13

1:56 pm - 11:05 pmONT Ontario-ORD Chicago O'Hare Intl

7h 09m1 stop San Francisco

6:00 am - 12:12 pmORD Chicago O'Hare Intl-ONT Ontario

8h 12m1 stop San Francisco

$297United Airlines

Wed, Sep 9 - Sun, Sep 13

1:04 pm - 11:43 pmONT Ontario-ORD Chicago O'Hare Intl

8h 39m1 stop Phoenix Sky Harbor Intl

5:00 am - 9:29 amORD Chicago O'Hare Intl-ONT Ontario

6h 29m1 stop Dallas/Fort Worth

$297American Airlines

Sun, Sep 13 - Thu, Sep 17

1:18 pm - 9:29 pmONT Ontario-ORD Chicago O'Hare Intl

6h 11m1 stop Denver Intl

8:20 pm - 10:49 pmORD Chicago O'Hare Intl-ONT Ontario

4h 29mnonstop

$307United Airlines

Sat, Sep 12 - Sat, Oct 3

Cheap direct flights

Enter your travel dates to find the best prices.

11:29 pm - 5:16 amLAS Las Vegas Harry Reid Intl-ORD Chicago O'Hare Intl

3h 47mnonstop

3:30 pm - 5:46 pmORD Chicago O'Hare Intl-LAS Las Vegas Harry Reid Intl

4h 16mnonstop

$176Frontier

Fri, Oct 16 - Mon, Oct 19

11:29 pm - 5:16 amLAS Las Vegas Harry Reid Intl-ORD Chicago O'Hare Intl

3h 47mnonstop

3:30 pm - 5:46 pmORD Chicago O'Hare Intl-LAS Las Vegas Harry Reid Intl

4h 16mnonstop

$176Frontier

Fri, Oct 16 - Sun, Oct 18

2:21 pm - 8:35 pmLAX Los Angeles-ORD Chicago O'Hare Intl

4h 14mnonstop

1:00 pm - 3:29 pmORD Chicago O'Hare Intl-LAX Los Angeles

4h 29mnonstop

$217United Airlines

Thu, Oct 29 - Mon, Nov 2

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

4h 10mnonstop

4:39 pm - 7:18 pmORD Chicago O'Hare Intl-LAX Los Angeles

4h 39mnonstop

$217United Airlines

Fri, Oct 16 - Mon, Oct 26

6:02 am - 12:21 pmLAX Los Angeles-ORD Chicago O'Hare Intl

4h 19mnonstop

10:30 am - 1:09 pmORD Chicago O'Hare Intl-LAX Los Angeles

4h 39mnonstop

$217American Airlines

Thu, Nov 5 - Wed, Nov 11

1:35 pm - 8:00 pmLAX Los Angeles-ORD Chicago O'Hare Intl

4h 25mnonstop

9:04 pm - 11:47 pmORD Chicago O'Hare Intl-LAX Los Angeles

4h 43mnonstop

$217American Airlines

Fri, Oct 30 - Sun, Nov 1

5:45 am - 11:35 amLAX Los Angeles-MDW Chicago Midway

3h 50mnonstop

8:45 pm - 11:20 pmMDW Chicago Midway-LAX Los Angeles

4h 35mnonstop

$217Southwest

Sat, Oct 17 - Tue, Oct 27

5:45 am - 11:35 amLAX Los Angeles-MDW Chicago Midway

3h 50mnonstop

9:20 pm - 11:55 pmMDW Chicago Midway-LAX Los Angeles

4h 35mnonstop

$217Southwest

Sat, Oct 24 - Mon, Oct 26

7:35 am - 1:38 pmLAX Los Angeles-ORD Chicago O'Hare Intl

4h 03mnonstop

4:30 pm - 7:02 pmORD Chicago O'Hare Intl-LAX Los Angeles

4h 32mnonstop

$217Delta

Tue, Oct 13 - Sat, Nov 7

3:00 pm - 9:02 pmLAX Los Angeles-ORD Chicago O'Hare Intl

4h 02mnonstop

9:30 am - 11:58 amORD Chicago O'Hare Intl-LAX Los Angeles

4h 28mnonstop

$217Delta

Sat, Oct 17 - Tue, Nov 3

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Frontier flights from California to Illinois

Our best Frontier deals on California to Illinois flight tickets

Frontier

Oct 16

LAS11:29 pmLas Vegas Harry Reid Intl

3h 47m

ORD5:16 amChicago O'Hare Intl

Oct 18

ORD3:30 pmChicago O'Hare Intl

4h 16m

LAS5:46 pmLas Vegas Harry Reid Intl

$176

Frontier

Sep 28

LAS11:50 pmLas Vegas Harry Reid Intl

3h 48m

ORD5:38 amChicago O'Hare Intl

Oct 4

ORD8:55 pmChicago O'Hare Intl

4h 10m

LAS11:05 pmLas Vegas Harry Reid Intl

$178

Frontier

Oct 2

LAS11:50 pmLas Vegas Harry Reid Intl

3h 48m

ORD5:38 amChicago O'Hare Intl

Oct 6

ORD1:21 pmChicago O'Hare Intl

4h 09m

LAS3:30 pmLas Vegas Harry Reid Intl

$180

Delta flights from California to Illinois

Our best Delta deals on California to Illinois flight tickets

Delta

Nov 6

LAX5:55 pmLos Angeles

3h 55m

ORD11:50 pmChicago O'Hare Intl

Nov 7

ORD4:30 pmChicago O'Hare Intl

4h 32m

LAX7:02 pmLos Angeles

$217

Delta

Oct 10

LAX3:00 pmLos Angeles

4h 02m

ORD9:02 pmChicago O'Hare Intl

Oct 16

ORD6:59 pmChicago O'Hare Intl

4h 46m

LAX9:45 pmLos Angeles

$218

Delta

Oct 13

LAX5:52 pmLos Angeles

3h 55m

ORD11:47 pmChicago O'Hare Intl

Nov 6

ORD12:50 pmChicago O'Hare Intl

9h 40m

1 stop

LAX8:30 pmLos Angeles

$227

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

Las VegasChicago

LAS Las Vegas Harry Reid Intl - ORD Chicago O'Hare Intl

LASORD

Las Vegas Harry Reid Intl

Fri 10/16

11:29 pm-5:16 am

Nonstop3h 47m

Chicago O'Hare Intl

Mon 10/19

3:30 pm-5:46 pm

Nonstop4h 16m

$176

Las VegasChicago

LAS Las Vegas Harry Reid Intl - ORD Chicago O'Hare Intl

LASORD

Las Vegas Harry Reid Intl

Tue 10/13

6:30 am-6:34 am

1 stop22h 04m

Chicago O'Hare Intl

Fri 10/16

8:01 pm-11:17 pm

1 stop29h 16m

$176

Los AngelesChicago

LAX Los Angeles - ORD Chicago O'Hare Intl

LAXORD

Los Angeles

Sat 10/10

12:21 am-6:34 am

Nonstop4h 13m

Chicago O'Hare Intl

Wed 10/14

3:49 pm-9:54 pm

1 stop8h 05m

$198

Los AngelesChicago

LAX Los Angeles - ORD Chicago O'Hare Intl

LAXORD

Los Angeles

Sat 10/3

8:45 am-5:05 pm

1 stop6h 20m

Chicago O'Hare Intl

Tue 10/6

8:50 am-11:23 am

Nonstop4h 33m

$204

Los AngelesChicago

LAX Los Angeles - ORD Chicago O'Hare Intl

LAXORD

Los Angeles

Fri 10/2

8:10 pm-6:20 am

1 stop8h 10m

Chicago O'Hare Intl

Sat 10/10

8:01 pm-10:51 pm

Nonstop4h 50m

$208

Los AngelesChicago

LAX Los Angeles - ORD Chicago O'Hare Intl

LAXORD

Los Angeles

Thu 10/29

2:21 pm-8:35 pm

Nonstop4h 14m

Chicago O'Hare Intl

Mon 11/2

1:00 pm-3:29 pm

Nonstop4h 29m

$217

Los AngelesChicago

LAX Los Angeles - ORD Chicago O'Hare Intl

LAXORD

Los Angeles

Tue 10/13

7:35 am-1:38 pm

Nonstop4h 03m

Chicago O'Hare Intl

Sat 11/7

4:30 pm-7:02 pm

Nonstop4h 32m

$217

Los AngelesChicago

LAX Los Angeles - ORD Chicago O'Hare Intl

LAXORD

Los Angeles

Sat 10/17

3:00 pm-9:02 pm

Nonstop4h 02m

Chicago O'Hare Intl

Tue 11/3

9:30 am-11:58 am

Nonstop4h 28m

$217

Los AngelesChicago

LAX Los Angeles - ORD Chicago O'Hare Intl

LAXORD

Los Angeles

Tue 11/3

9:59 am-11:57 pm

1 stop11h 58m

Chicago O'Hare Intl

Sat 11/7

2:42 pm-11:53 pm

1 stop11h 11m

$217

Los AngelesChicago

LAX Los Angeles - ORD Chicago O'Hare Intl

LAXORD

Los Angeles

Tue 11/3

9:59 am-11:57 pm

1 stop11h 58m

Chicago O'Hare Intl

Thu 11/5

2:42 pm-11:56 pm

1 stop11h 14m

$217

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 California to Illinois

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 Illinois?

The cheapest month to fly to Illinois from California is in October. Flight prices, which tend to average around $358, are often lower during this time because this is during the off-season. If you aren’t able to travel to Illinois during the month of October, then flying in September is also cheap. Prices for this month can be found on momondo for an average of $368.

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

The cheapest day to depart from California to Illinois is on a Wednesday when prices can be found for as low as $405. Flights from California to Illinois on a Sunday will generally be more expensive and average around $502. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

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

Our most recent data shows that the best time of day to fly to Illinois is in the afternoon. Flights from California to Illinois during this time can be as low as $366. Flights at noon are often more expensive with an average ticket price of $515.

What is the cheapest California to Illinois flight route?

Fly from Los Angeles to Chicago Midway for the best California - Illinois flight prices

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

You are more likely to see cheaper flights to Illinois from California when booking weeks ahead of your departure date. In general, you can expect to find flights to Illinois for around $361 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Illinois from California for as low as $304 on momondo.

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

There are 4 cabin classes available to choose from on California to Illinois 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 California to Illinois flights?

You could potentially save up to 18% on your flight if you consider stops on a California to Illinois flight.

Cheap California to Illinois flight deals and tips

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

Best Price Found	$99
Fastest flight time	3h 05m
Direct flights	Every day
Airports in Illinois	98 airports

The best one-way flight to Illinois from California in the past 72 hours is $99. The best round-trip flight deal from California to Illinois found on momondo in the last 72 hours is $176.

The fastest flight from California to Illinois takes 3h 05m

Direct flights go from California to Illinois every day.

There are 98 airports in Illinois. From California there are direct flights to Chicago O'Hare Intl (ORD).

Search flight deals

Frequently asked questions about flying from California to Illinois

When did momondo last update prices for flights from California to Illinois?
Prices for flights from California to Illinois were last updated today.
How many operators does momondo search for flights from California to Illinois?
As of September 2026, there are 7 operators available to choose from for flights from California to Illinois.
How old do you have to be to fly from California to Illinois?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from California to Illinois.
What documentation or ID do you need to fly to Illinois?
The required travel and health documents for your Illinois trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Illinois. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from California to Illinois?
momondo data reveals that the most frequently booked plane model on the route from California to Illinois is Airbus A321neo, representing 17.58% of all bookings. The subsequent popular models are Boeing 737-800 at 14.27%, Airbus A321-100/200 at 13.29%, and Boeing 757-300 at 10.00%.

Best airlines flying from California to Illinois

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

Airline	Rating	Free Cancellation	Price
Frontier	PriceFrom $99	Free Cancellation	Rating 5.6 2,614 reviews	Search Frontier flights
Delta	PriceFrom $122	Free Cancellation	Rating 7.8 8,549 reviews	Search Delta flights
Alaska Airlines	PriceFrom $159	Free Cancellation	Rating 7.9 12,887 reviews	Search Alaska Airlines flights
JetBlue	PriceFrom $166	Free Cancellation	Rating 7.1 3,047 reviews	Search JetBlue flights
American Airlines	PriceFrom $167	Free Cancellation	Rating 7.1 12,040 reviews	Search American Airlines flights
United Airlines	PriceFrom $182	Free Cancellation	Rating 7.4 10,173 reviews	Search United Airlines flights
Southwest	PriceFrom $222	Free Cancellation	Rating 8.0 4,196 reviews	Search Southwest flights

Why use momondo?

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

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

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

Flights from California to Illinois with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from California to Illinois.

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

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

An easier way to manage your Illinois trip

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Popular cities

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Complete your trip

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Popular cities in Illinois

Flights to New Yorkfrom $69

Flights to Los Angelesfrom $50

Flights to Orlandofrom $50

Flights to Miamifrom $79

Flights to San Franciscofrom $40

Flights to Chicagofrom $50

Flights to Las Vegasfrom $49

Flights to Washington, D.C.from $50

Flights to Bostonfrom $82

Flights to Fort Lauderdalefrom $60

Flights to Atlantafrom $38

Flights to Dallasfrom $76

Cheap flights from California to Illinois from $99

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from California to Illinois departing on 11/16. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Find the cheapest flights from California to Illinois

Cheap round-trip flights

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Cheap last minute flights

Cheap direct flights

Big names and deals

Big names and deals

Filter for what you want

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Frontier flights from California to Illinois

Our best Frontier deals on California to Illinois flight tickets

Delta flights from California to Illinois

Our best Delta deals on California to Illinois flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from California to Illinois that are best for you.

See travel insights to Illinois from

How to get the cheapest flight ticket from California to Illinois

What is the cheapest month to fly to Illinois?

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

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

What is the cheapest California to Illinois flight route?

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

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

Can stopping save me money on California to Illinois flights?

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

What airlines fly to Illinois?

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

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

How long is the flight from California to Illinois?

Cheap California to Illinois flight deals and tips

Best Price Found

Fastest flight time

Direct flights

Airports in Illinois

Frequently asked questions about flying from California to Illinois

Best airlines flying from California to Illinois

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

Why use momondo?

An easier way to manage your Illinois 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 Illinois

Popular cities in Illinois

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

California flight routes

According to popular flight searches on momondo this year

Illinois flight routes

According to popular flight searches on momondo this year

Fly your favorite airline to Illinois

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Complete your trip to Illinois

Explore popular destinations other users love

According to popular flight searches on momondo this year