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

Allegiant Air, Spirit Airlines, and Frontier are the most popular carriers operating from Illinois to California

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

As of August 2025, there are 1,733 flights per week flying from Illinois to California. The most common day of the week flights depart is Fri, with 21% of flights taking off on this day.

What airlines fly to California?

American Airlines, United Airlines and Spirit Airlines 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.

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 16m on average. Another popular route from Illinois to California is flying from Moline to Los Angeles, which will take roughly 6h 17m. Keep in mind that layovers or delays could extend your travel time.

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

As of August 2025, 247 flights take off from Illinois and land in California each day. The most common flight departure time for this route is 6:00PM, with 35% of daily flights taking off in the afternoon.

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 August 2025.

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.

$39 Cheap Flights from Illinois to California in 2025

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Find the cheapest flights from Illinois to California

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

6:21 pm - 11:37 pmORD-SAN

7h 16m1 stop

7:47 pm - 11:51 amSAN-ORD

14h 04m1 stop

$84Spirit Airlines

Find Deal

Wed, Sep 3 - Sat, Sep 6

9:00 am - 11:05 amORD-LAS

4h 05mnonstop

3:50 pm - 9:32 pmLAS-ORD

3h 42mnonstop

$84Spirit Airlines

Find Deal

Tue, Sep 9 - Wed, Sep 10

9:52 pm - 11:58 pmORD-LAS

4h 06mnonstop

2:59 pm - 8:59 pmLAS-ORD

4h 00mnonstop

$104Frontier

Find Deal

Fri, Oct 31 - Fri, Nov 7

1:03 pm - 3:22 pmORD-LAS

4h 19mnonstop

2:57 pm - 8:59 pmLAS-ORD

4h 02mnonstop

$106Frontier

Find Deal

Sun, Sep 14 - Fri, Sep 19

7:35 pm - 10:02 pmORD-SAN

4h 27mnonstop

5:01 pm - 11:14 pmSAN-ORD

4h 13mnonstop

$139United Airlines

Find Deal

Wed, Sep 3 - Wed, Sep 10

4:35 pm - 6:25 pmMDW-LAS

3h 50mnonstop

5:30 pm - 11:05 pmLAS-MDW

3h 35mnonstop

$159Southwest

Find Deal

Wed, Sep 3 - Sat, Sep 6

7:25 am - 9:44 amORD-SAN

4h 19mnonstop

3:07 pm - 9:24 pmSAN-ORD

4h 17mnonstop

$167American Airlines

Find Deal

Thu, Aug 21 - Sat, Aug 23

7:20 pm - 9:10 pmMDW-LAS

3h 50mnonstop

5:00 am - 10:30 amLAS-MDW

3h 30mnonstop

$173Southwest

Find Deal

Sat, Sep 6 - Mon, Sep 8

5:39 pm - 8:13 pmORD-SFO

4h 34mnonstop

6:10 am - 12:30 pmSFO-ORD

4h 20mnonstop

$179American Airlines

Find Deal

Sat, Aug 30 - Sun, Aug 31

6:15 am - 8:56 amORD-SFO

4h 41mnonstop

7:00 am - 1:32 pmSFO-ORD

4h 32mnonstop

$198United Airlines

Find Deal

Thu, Aug 28 - Sun, Aug 31

Spirit Airlines flights from Illinois to California

Our best Spirit Airlines deals on Illinois to California flight tickets

Spirit Airlines

Sep 9

ORD9:00 amChicago O'Hare Intl

4h 05m

LAS11:05 amLas Vegas Harry Reid Intl

Sep 10

LAS3:50 pmLas Vegas Harry Reid Intl

3h 42m

ORD9:32 pmChicago O'Hare Intl

$84

Find similar

Spirit Airlines

Sep 3

ORD6:21 pmChicago O'Hare Intl

3h 50m

LAS8:11 pmLas Vegas Harry Reid Intl

Sep 6

LAS6:15 amLas Vegas Harry Reid Intl

3h 36m

ORD11:51 amChicago O'Hare Intl

$85

Find similar

Spirit Airlines

Aug 23

ORD5:35 pmChicago O'Hare Intl

3h 52m

LAS7:27 pmLas Vegas Harry Reid Intl

Aug 30

LAS6:00 amLas Vegas Harry Reid Intl

3h 43m

ORD11:43 amChicago O'Hare Intl

$86

Find similar

Frontier flights from Illinois to California

Our best Frontier deals on Illinois to California flight tickets

Frontier

Oct 31

ORD9:52 pmChicago O'Hare Intl

4h 06m

LAS11:58 pmLas Vegas Harry Reid Intl

Nov 7

LAS2:59 pmLas Vegas Harry Reid Intl

4h 00m

ORD8:59 pmChicago O'Hare Intl

$104

Find similar

Frontier

Sep 14

ORD1:03 pmChicago O'Hare Intl

4h 19m

LAS3:22 pmLas Vegas Harry Reid Intl

Sep 19

LAS2:57 pmLas Vegas Harry Reid Intl

4h 02m

ORD8:59 pmChicago O'Hare Intl

$106

Find similar

Frontier

Sep 5

ORD9:54 pmChicago O'Hare Intl

4h 11m

LAS12:05 amLas Vegas Harry Reid Intl

Sep 7

LAS6:00 amLas Vegas Harry Reid Intl

3h 48m

ORD11:48 amChicago O'Hare Intl

$107

Find similar

Fly from

Fly to

Route

Depart

Return

Price

ChicagoSan Diego

ORD - SAN

ORDSAN

Chicago O'Hare Intl

Wed 9/3

6:21 pm-11:37 pm

1 stop7h 16m

San Diego

Sat 9/6

7:47 pm-11:51 am

1 stop14h 04m

$84

ChicagoLas Vegas

ORD - LAS

ORDLAS

Chicago O'Hare Intl

Tue 9/9

9:00 am-11:05 am

Nonstop4h 05m

Las Vegas Harry Reid Intl

Wed 9/10

3:50 pm-9:32 pm

Nonstop3h 42m

$84

ChicagoLas Vegas

ORD - LAS

ORDLAS

Chicago O'Hare Intl

Fri 10/31

9:52 pm-11:58 pm

Nonstop4h 06m

Las Vegas Harry Reid Intl

Fri 11/7

2:59 pm-8:59 pm

Nonstop4h 00m

$104

ChicagoLas Vegas

ORD - LAS

ORDLAS

Chicago O'Hare Intl

Sun 9/14

1:03 pm-3:22 pm

Nonstop4h 19m

Las Vegas Harry Reid Intl

Fri 9/19

2:57 pm-8:59 pm

Nonstop4h 02m

$106

ChicagoSan Diego

ORD - SAN

ORDSAN

Chicago O'Hare Intl

Wed 9/3

7:35 pm-10:02 pm

Nonstop4h 27m

San Diego

Wed 9/10

5:01 pm-11:14 pm

Nonstop4h 13m

$139

ChicagoLas Vegas

MDW - LAS

MDWLAS

Chicago Midway

Wed 9/3

4:35 pm-6:25 pm

Nonstop3h 50m

Las Vegas Harry Reid Intl

Sat 9/6

5:30 pm-11:05 pm

Nonstop3h 35m

$159

ChicagoSan Diego

ORD - SAN

ORDSAN

Chicago O'Hare Intl

Thu 8/21

7:25 am-9:44 am

Nonstop4h 19m

San Diego

Sat 8/23

3:07 pm-9:24 pm

Nonstop4h 17m

$167

ChicagoLas Vegas

MDW - LAS

MDWLAS

Chicago Midway

Sat 9/6

7:20 pm-9:10 pm

Nonstop3h 50m

Las Vegas Harry Reid Intl

Mon 9/8

5:00 am-10:30 am

Nonstop3h 30m

$173

ChicagoSan Francisco

ORD - SFO

ORDSFO

Chicago O'Hare Intl

Sat 8/30

5:39 pm-8:13 pm

Nonstop4h 34m

San Francisco

Sun 8/31

6:10 am-12:30 pm

Nonstop4h 20m

$179

ChicagoSan Francisco

ORD - SFO

ORDSFO

Chicago O'Hare Intl

Thu 8/28

6:15 am-8:56 am

Nonstop4h 41m

San Francisco

Sun 8/31

7:00 am-1:32 pm

Nonstop4h 32m

$198

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 August is another great option to travel to California, with average flight prices from Illinois averaging around $235.

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 $347. 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 $540.

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 $337. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $838 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 $270 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 $225 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	$39
Fastest flight time	3h 35m
Direct flights	Mon, Tue, Thu, Fri, Sat and Sun
Airports in California	5 airports

The best one-way flight to California from Illinois in the past 72 hours is $39. The best round-trip flight deal from Illinois to California found on momondo in the last 72 hours is $84.

The fastest flight from Illinois to California takes 3h 35m

Direct flights go from Illinois to California on Monday, Tuesday, Thursday, Friday, Saturday and Sunday. Airlines offering direct flights are: Southwest and Frontier.

There are 5 airports near California: San Diego (SAN), Los Angeles (LAX), Santa Ana J. Wayne/Orange Cnty (SNA), Burbank Bob Hope (BUR), 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 10 operators available for flights from Illinois to California as of August 2025.
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 Boeing 737-800, making up 19.65% of the total bookings. Other popular models include Airbus A321neo with 18.05%, Airbus A321-100/200 with 11.32%, and Boeing 757-300 with 8.27%.

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
Frontier	PriceFrom $79	Free Cancellation	Rating 5.8 3,241 reviews	Search Frontier flights
Allegiant Air	PriceFrom $81	Free Cancellation	Rating 7.2 702 reviews	Search Allegiant Air flights
Spirit Airlines	PriceFrom $88	Free Cancellation	Rating 6.3 8,054 reviews	Search Spirit Airlines flights
Hawaiian Airlines	PriceFrom $108	Free Cancellation	Rating 7.8 2,611 reviews	Search Hawaiian Airlines flights
Sun Country Air	PriceFrom $112	Free Cancellation	Rating 6.9 334 reviews	Search Sun Country Air flights
Delta	PriceFrom $128	Free Cancellation	Rating 8.0 7,983 reviews	Search Delta flights
Southwest	PriceFrom $138	Free Cancellation	Rating 8.0 4,246 reviews	Search Southwest flights
Alaska Airlines	PriceFrom $143	Free Cancellation	Rating 8.0 10,000 reviews	Search Alaska Airlines flights
United Airlines	PriceFrom $179	Free Cancellation	Rating 7.4 8,904 reviews	Search United Airlines flights
American Airlines	PriceFrom $179	Free Cancellation	Rating 7.2 10,000 reviews	Search American 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.

An easier way to manage your California trip

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Popular cities in California

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Cheap flights from Illinois to California from $39

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 9/29. 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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Big names and deals

Filter for what you want

Filter for what you want

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Find the cheapest flights from Illinois to California

Cheap round-trip flights

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Cheap last minute flights

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Spirit Airlines flights from Illinois to California

Our best Spirit Airlines deals on Illinois to California flight tickets

Frontier flights from Illinois to California

Our best Frontier deals on Illinois to California flight tickets

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

See travel insights to California from

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

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 $235.

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?

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?

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.

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

Allegiant Air, Spirit Airlines, and Frontier are the most popular carriers operating from Illinois to California

What airlines fly to California?

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

As of August 2025, 247 flights take off from Illinois and land in California each day. The most common flight departure time for this route is 6:00PM, with 35% of daily flights taking off in the afternoon.

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

As of August 2025, there are 1,733 flights per week flying from Illinois to California. The most common day of the week flights depart is Fri, with 21% of flights taking off on this day.

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

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

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

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

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

What is the most popular plane model 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?

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

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

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

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

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