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Cheap flights from Illinois to California from $61

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 3/2. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Cheap round-trip flights

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Frontier Logo
10:38 pm - 9:17 pmORD-ONT
24h 39m1 stop
Frontier Logo
6:30 am - 9:33 pmONT-ORD
13h 03m1 stop
$117Frontier
Find Deal
Mon, Feb 2 - Fri, Feb 6
Frontier Logo
6:00 am - 11:10 amORD-ONT
7h 10m1 stop
Frontier Logo
1:46 pm - 11:44 pmONT-ORD
7h 58m1 stop
$125Frontier
Find Deal
Thu, Nov 13 - Thu, Nov 13
Spirit Airlines Logo
7:58 pm - 10:07 pmORD-LAS
4h 09mnonstop
Spirit Airlines Logo
11:59 pm - 5:32 amLAS-ORD
3h 33mnonstop
$135Spirit Airlines
Find Deal
Tue, Nov 18 - Thu, Nov 20
Spirit Airlines Logo
8:00 am - 10:05 amORD-LAS
4h 05mnonstop
Spirit Airlines Logo
7:45 pm - 6:25 amLAS-ORD
8h 40m1 stop
$139Spirit Airlines
Find Deal
Sun, Nov 16 - Fri, Nov 21
United Airlines Logo
7:44 pm - 9:58 pmORD-LAS
4h 14mnonstop
United Airlines Logo
10:55 am - 4:38 pmLAS-ORD
3h 43mnonstop
$145United Airlines
Find Deal
Tue, Dec 2 - Tue, Dec 9
Southwest Logo
9:35 pm - 11:30 pmMDW-LAS
3h 55mnonstop
Southwest Logo
5:15 am - 10:40 amLAS-MDW
3h 25mnonstop
$145Southwest
Find Deal
Sun, Dec 14 - Tue, Dec 23
United Airlines Logo
9:05 pm - 11:19 pmORD-LAS
4h 14mnonstop
United Airlines Logo
12:30 am - 6:08 amLAS-ORD
3h 38mnonstop
$149United Airlines
Find Deal
Fri, Jan 16 - Sun, Jan 18
Southwest Logo
6:10 am - 8:25 amMDW-LAS
4h 15mnonstop
Southwest Logo
11:40 pm - 5:05 amLAS-MDW
3h 25mnonstop
$149Southwest
Find Deal
Mon, Jan 12 - Fri, Jan 16
American Airlines Logo
8:47 pm - 10:57 pmORD-LAS
4h 10mnonstop
American Airlines Logo
11:59 pm - 5:52 amLAS-ORD
3h 53mnonstop
$159American Airlines
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Sun, Dec 21 - Wed, Dec 24
American Airlines Logo
6:17 pm - 8:55 pmORD-LAX
4h 38mnonstop
American Airlines Logo
6:00 am - 12:10 pmLAX-ORD
4h 10mnonstop
$160American Airlines
Find Deal
Sat, Dec 6 - Sun, Dec 14

Delta flights from Illinois to California

Our best Delta deals on Illinois to California flight tickets
Delta
Dec 3
MDW6:00 amChicago Midway
8h 31m
1 stop
LAX12:31 pmLos Angeles
Dec 14
LAX2:15 pmLos Angeles
7h 32m
1 stop
MDW11:47 pmChicago Midway
$217
Find similar
Delta
Nov 11
MDW1:47 pmChicago Midway
8h 00m
1 stop
LAS7:47 pmLas Vegas Harry Reid Intl
Nov 12
LAS12:43 amLas Vegas Harry Reid Intl
7h 09m
1 stop
MDW9:52 amChicago Midway
$249
Find similar
Delta
Nov 13
MDW10:47 amChicago Midway
7h 52m
1 stop
LAX4:39 pmLos Angeles
Nov 18
LAX7:15 amLos Angeles
7h 23m
1 stop
MDW4:38 pmChicago Midway
$253
Find similar

Southwest flights from Illinois to California

Our best Southwest deals on Illinois to California flight tickets
Southwest
Dec 14
MDW9:35 pmChicago Midway
3h 55m
LAS11:30 pmLas Vegas Harry Reid Intl
Dec 23
LAS5:15 amLas Vegas Harry Reid Intl
3h 25m
MDW10:40 amChicago Midway
$145
Find similar
Southwest
Jan 12
MDW6:10 amChicago Midway
4h 15m
LAS8:25 amLas Vegas Harry Reid Intl
Jan 16
LAS11:40 pmLas Vegas Harry Reid Intl
3h 25m
MDW5:05 amChicago Midway
$149
Find similar
Southwest
Jan 11
MDW5:10 amChicago Midway
4h 15m
LAS7:25 amLas Vegas Harry Reid Intl
Jan 16
LAS5:00 amLas Vegas Harry Reid Intl
3h 25m
MDW10:25 amChicago Midway
$154
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Illinois to California that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated October 30, 2025.
Use the filters below to find and compare flights from Illinois to California that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ChicagoOntario

ORD - ONT

ORDONT

Chicago O'Hare Intl

Mon 2/2

10:38 pm-9:17 pm

1 stop24h 39m

Ontario

Fri 2/6

6:30 am-9:33 pm

1 stop13h 03m

$117

ChicagoOntario

ORD - ONT

ORDONT

Chicago O'Hare Intl

Thu 11/13

6:00 am-11:10 am

1 stop7h 10m

Ontario

Thu 11/13

1:46 pm-11:44 pm

1 stop7h 58m

$125

ChicagoLas Vegas

ORD - LAS

ORDLAS

Chicago O'Hare Intl

Tue 11/18

7:58 pm-10:07 pm

Nonstop4h 09m

Las Vegas Harry Reid Intl

Thu 11/20

11:59 pm-5:32 am

Nonstop3h 33m

$135

ChicagoLas Vegas

ORD - LAS

ORDLAS

Chicago O'Hare Intl

Sun 11/16

8:00 am-10:05 am

Nonstop4h 05m

Las Vegas Harry Reid Intl

Fri 11/21

7:45 pm-6:25 am

1 stop8h 40m

$139

ChicagoLas Vegas

ORD - LAS

ORDLAS

Chicago O'Hare Intl

Tue 12/2

7:44 pm-9:58 pm

Nonstop4h 14m

Las Vegas Harry Reid Intl

Tue 12/9

10:55 am-4:38 pm

Nonstop3h 43m

$145

ChicagoLas Vegas

MDW - LAS

MDWLAS

Chicago Midway

Sun 12/14

9:35 pm-11:30 pm

Nonstop3h 55m

Las Vegas Harry Reid Intl

Tue 12/23

5:15 am-10:40 am

Nonstop3h 25m

$145

ChicagoLas Vegas

ORD - LAS

ORDLAS

Chicago O'Hare Intl

Fri 1/16

9:05 pm-11:19 pm

Nonstop4h 14m

Las Vegas Harry Reid Intl

Sun 1/18

12:30 am-6:08 am

Nonstop3h 38m

$149

ChicagoLas Vegas

MDW - LAS

MDWLAS

Chicago Midway

Mon 1/12

6:10 am-8:25 am

Nonstop4h 15m

Las Vegas Harry Reid Intl

Fri 1/16

11:40 pm-5:05 am

Nonstop3h 25m

$149

ChicagoLas Vegas

ORD - LAS

ORDLAS

Chicago O'Hare Intl

Sun 12/21

8:47 pm-10:57 pm

Nonstop4h 10m

Las Vegas Harry Reid Intl

Wed 12/24

11:59 pm-5:52 am

Nonstop3h 53m

$159

ChicagoLos Angeles

ORD - LAX

ORDLAX

Chicago O'Hare Intl

Sat 12/6

6:17 pm-8:55 pm

Nonstop4h 38m

Los Angeles

Sun 12/14

6:00 am-12:10 pm

Nonstop4h 10m

$160

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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 $244.

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 $338. 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 $508.

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 $320. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $834 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 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 $226 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 9% 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

$99

Fastest flight time

3h 35m

Direct flights

Every day

Airports in California

1 airport
The best one-way flight to California from Illinois in the past 72 hours is $99. The best round-trip flight deal from Illinois to California found on momondo in the last 72 hours is $193.
The fastest flight from Illinois to California takes 3h 35m
Direct flights go from Illinois to California every day.
There is 1 airport near California: 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?

  • 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?

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
FrontierPriceFrom $79Free CancellationRating
5.8
3,123 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $83Free CancellationRating
6.3
8,115 reviews
Search Spirit Airlines flights
Hawaiian AirlinesPriceFrom $108Free CancellationRating
7.8
2,797 reviews
Search Hawaiian Airlines flights
Sun Country AirPriceFrom $112Free CancellationRating
6.9
335 reviews
Search Sun Country Air flights
DeltaPriceFrom $128Free CancellationRating
7.9
7,993 reviews
Search Delta flights
SouthwestPriceFrom $138Free CancellationRating
8.0
4,242 reviews
Search Southwest flights
Alaska AirlinesPriceFrom $142Free CancellationRating
8.0
11,214 reviews
Search Alaska Airlines flights
American AirlinesPriceFrom $165Free CancellationRating
7.2
11,030 reviews
Search American Airlines flights
United AirlinesPriceFrom $176Free CancellationRating
7.4
8,998 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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