What airlines fly to Illinois?

American Airlines, United Airlines and Frontier are the top three most popular airlines that fly to Illinois from California according to our data. American Airlines is the first choice among our users, with 44% of people opting to fly with this airline when traveling to Illinois. Keep in mind that there are 9 different airlines that fly to Illinois on a routine basis, so you have a few additional options to choose from.

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

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

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

As of April 2026, 1,782 flights take off from California and land in Illinois each week. The most common flight departure day for this route is Thu, with 17% of weekly flights taking off on this day.

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 46m on average. If you fly from San Diego (another popular airport in California) to Chicago O'Hare Intl Airport, then the average flight time is 3h 54m.

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

As of April 2026, there are 254 flights per day flying from California to Illinois. The most common time of day flights depart is 10:00AM, with 44% of flights taking off at noon.

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 April 2026, there are 9 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.

$70 Cheap Flights from California to Illinois in 2026

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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.

5:22 pm - 11:27 pm

LAX

ORD

4h 05mnonstop

7:21 pm - 10:06 pm

ORD

LAX

4h 45mnonstop

$167Multiple Airlines

jue., abr. 23 - lun., abr. 27

8:16 am - 5:00 pm

LAX

ORD

6h 44m

1 stop

8:56 pm - 11:36 pm

ORD

LAX

4h 40mnonstop

$168Frontier

vie., may. 1 - lun., may. 11

5:22 pm - 11:27 pm

LAX

ORD

4h 05mnonstop

5:15 am - 7:35 am

ORD

LAX

4h 20mnonstop

$169Spirit Airlines

vie., may. 1 - dom., may. 3

11:00 pm - 11:32 am

LAX

ORD

10h 32m

1 stop

7:21 pm - 10:06 pm

ORD

LAX

4h 45mnonstop

$170Frontier

mié., abr. 22 - vie., abr. 24

7:36 pm - 10:23 am

BUR

ORD

12h 47m

2 stops

10:07 pm - 8:08 am

ORD

BUR

12h 01m

1 stop

$180Spirit Airlines

mié., abr. 22 - lun., abr. 27

11:55 pm - 5:50 am

LAX

MDW

3h 55mnonstop

8:55 pm - 11:20 pm

MDW

LAX

4h 25mnonstop

$199Southwest

mar., may. 5 - mar., may. 12

9:15 pm - 7:35 am

SFO

MDW

8h 20m

1 stop

9:00 pm - 11:35 pm

MDW

SFO

4h 35mnonstop

$261Southwest

lun., abr. 27 - mar., may. 5

4:18 pm - 12:32 am

SJC

ORD

6h 14m

1 stop

7:04 am - 12:06 pm

ORD

SJC

7h 02m

1 stop

$272American Airlines

lun., may. 4 - mar., may. 12

12:56 pm - 12:45 am

SJC

ORD

9h 49m

1 stop

8:02 pm - 10:58 pm

ORD

SJC

4h 56mnonstop

$275United Airlines

jue., abr. 30 - lun., may. 4

1:23 pm - 10:20 pm

SNA

ORD

6h 57m

1 stop

8:15 am - 10:41 am

ORD

SNA

4h 26mnonstop

$320American Airlines

sáb., may. 16 - mar., may. 26

Spirit Airlines flights from California to Illinois

Our best Spirit Airlines deals on California to Illinois flight tickets

Spirit Airlines

May 1

LAX11:35 pmLos Angeles

4h 00m

ORD5:35 amChicago O'Hare Intl

May 3

ORD5:15 amChicago O'Hare Intl

4h 20m

LAX7:35 amLos Angeles

$169

Spirit Airlines

Apr 22

BUR7:36 pmBurbank Bob Hope

12h 47m

2 stops

ORD10:23 amChicago O'Hare Intl

Apr 27

ORD10:07 pmChicago O'Hare Intl

12h 01m

1 stop

BUR8:08 amBurbank Bob Hope

$180

Spirit Airlines

Apr 22

BUR7:36 pmBurbank Bob Hope

12h 47m

2 stops

ORD10:23 amChicago O'Hare Intl

Apr 25

ORD10:07 pmChicago O'Hare Intl

12h 01m

1 stop

BUR8:08 amBurbank Bob Hope

$181

American Airlines flights from California to Illinois

Our best American Airlines deals on California to Illinois flight tickets

American Airlines

May 19

SAN3:09 pmSan Diego

4h 23m

ORD9:32 pmChicago O'Hare Intl

May 26

ORD6:59 pmChicago O'Hare Intl

4h 30m

SAN9:29 pmSan Diego

$238

American Airlines

May 23

SFO2:42 pmSan Francisco

4h 52m

ORD9:34 pmChicago O'Hare Intl

May 30

ORD3:16 pmChicago O'Hare Intl

4h 45m

SFO6:01 pmSan Francisco

$266

American Airlines

May 4

SJC4:18 pmSan Jose

6h 14m

1 stop

ORD12:32 amChicago O'Hare Intl

May 12

ORD7:04 amChicago O'Hare Intl

7h 02m

1 stop

SJC12:06 pmSan Jose

$272

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Los AngelesChicago

LAX - ORD

LAXORD

Los Angeles

jue. 4/23

5:22 pm-11:27 pm

Nonstop4h 05m

Chicago O'Hare Intl

lun. 4/27

7:21 pm-10:06 pm

Nonstop4h 45m

$167

Los AngelesChicago

LAX - ORD

LAXORD

Los Angeles

vie. 5/1

8:16 am-5:00 pm

1 stop6h 44m

Chicago O'Hare Intl

lun. 5/11

8:56 pm-11:36 pm

Nonstop4h 40m

$168

Los AngelesChicago

LAX - ORD

LAXORD

Los Angeles

vie. 5/1

5:22 pm-11:27 pm

Nonstop4h 05m

Chicago O'Hare Intl

dom. 5/3

5:15 am-7:35 am

Nonstop4h 20m

$169

Los AngelesChicago

LAX - ORD

LAXORD

Los Angeles

mié. 4/22

11:00 pm-11:32 am

1 stop10h 32m

Chicago O'Hare Intl

vie. 4/24

7:21 pm-10:06 pm

Nonstop4h 45m

$170

BurbankChicago

BUR - ORD

BURORD

Burbank Bob Hope

mié. 4/22

7:36 pm-10:23 am

2 stops12h 47m

Chicago O'Hare Intl

lun. 4/27

10:07 pm-8:08 am

1 stop12h 01m

$180

Quickest round-trip

Los AngelesChicago

LAX - MDW

LAXMDW

Los Angeles

mar. 5/5

11:55 pm-5:50 am

Nonstop3h 55m

Chicago Midway

mar. 5/12

8:55 pm-11:20 pm

Nonstop4h 25m

$199

San FranciscoChicago

SFO - MDW

SFOMDW

San Francisco

lun. 4/27

9:15 pm-7:35 am

1 stop8h 20m

Chicago Midway

mar. 5/5

9:00 pm-11:35 pm

Nonstop4h 35m

$261

San JoseChicago

SJC - ORD

SJCORD

San Jose

lun. 5/4

4:18 pm-12:32 am

1 stop6h 14m

Chicago O'Hare Intl

mar. 5/12

7:04 am-12:06 pm

1 stop7h 02m

$272

San JoseChicago

SJC - ORD

SJCORD

San Jose

jue. 4/30

12:56 pm-12:45 am

1 stop9h 49m

Chicago O'Hare Intl

lun. 5/4

8:02 pm-10:58 pm

Nonstop4h 56m

$275

Santa AnaChicago

SNA - ORD

SNAORD

Santa Ana J. Wayne/Orange Cnty

sáb. 5/16

1:23 pm-10:20 pm

1 stop6h 57m

Chicago O'Hare Intl

mar. 5/26

8:15 am-10:41 am

Nonstop4h 26m

$320

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 September. Flight prices, which tend to average around $241, 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 September, then flying in August is also cheap. Prices for this month can be found on momondo for an average of $260.

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

The cheapest day to depart from California to Illinois is on a Thursday when prices can be found for as low as $363. Flights from California to Illinois on a Sunday will generally be more expensive and average around $440. 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 $286. Flights at noon are often more expensive with an average ticket price of $467.

What is the cheapest California to Illinois flight route?

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

How far in advance should I book a flight 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 $320 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 $268 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 4% 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	$188
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 $188. The best round-trip flight deal from California to Illinois found on momondo in the last 72 hours is $320.

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), Chicago Midway (MDW).

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 April 2026, there are 9 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 21.73% of all bookings. The subsequent popular models are Boeing 737-800 at 16.99%, Boeing 737 MAX 8 at 11.19%, and Boeing 757-300 at 9.27%.

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 $90	Free Cancellation	Rating 5.7 2,995 reviews	Search Frontier flights
Delta	PriceFrom $93	Free Cancellation	Rating 7.9 8,392 reviews	Search Delta flights
Spirit Airlines	PriceFrom $98	Free Cancellation	Rating 6.3 8,606 reviews	Search Spirit Airlines flights
Hawaiian Airlines	PriceFrom $101	Free Cancellation	Rating 7.8 2,838 reviews	Search Hawaiian Airlines flights
United Airlines	PriceFrom $133	Free Cancellation	Rating 7.4 9,554 reviews	Search United Airlines flights
Alaska Airlines	PriceFrom $145	Free Cancellation	Rating 7.9 12,197 reviews	Search Alaska Airlines flights
American Airlines	PriceFrom $157	Free Cancellation	Rating 7.1 11,559 reviews	Search American Airlines flights
JetBlue	PriceFrom $166	Free Cancellation	Rating 7.2 2,925 reviews	Search JetBlue flights
Southwest	PriceFrom $179	Free Cancellation	Rating 8.0 4,338 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 in Illinois

Flights to New Yorkfrom $55

Flights to Los Angelesfrom $53

Flights to Orlandofrom $48

Flights to Miamifrom $57

Flights to Chicagofrom $58

Flights to San Franciscofrom $84

Flights to Las Vegasfrom $45

Flights to Washington, D.C.from $56

Flights to Bostonfrom $69

Flights to Atlantafrom $48

Flights to Dallasfrom $59

Flights to Fort Lauderdalefrom $49

Cheap flights from California to Illinois from $70

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 5/12. 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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Spirit Airlines flights from California to Illinois

Our best Spirit Airlines deals on California to Illinois flight tickets

American Airlines flights from California to Illinois

Our best American Airlines deals on California to Illinois flight tickets

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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 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

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

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

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