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Cheap flights from California to Illinois from $74

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 10/11. 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

Spirit Airlines Logo
12:13 pm - 12:17 amBUR-ORD
10h 04m1 stop
Spirit Airlines Logo
6:40 am - 3:45 pmORD-BUR
11h 05m1 stop
$125Spirit Airlines
Find Deal
Sat, Oct 11 - Tue, Oct 14
Multiple Airlines Logo
1:23 pm - 11:58 pmLAX-ORD
8h 35m1 stop
Multiple Airlines Logo
7:09 pm - 9:40 pmORD-LAX
4h 31mnonstop
$143Multiple Airlines
Find Deal
Sat, Sep 27 - Sat, Oct 4
Frontier Logo
7:00 pm - 7:54 amLAX-ORD
10h 54m1 stop
Frontier Logo
6:30 am - 8:56 amORD-LAX
4h 26mnonstop
$145Frontier
Find Deal
Sat, Nov 15 - Mon, Nov 17
Frontier Logo
4:21 pm - 10:43 pmLAX-ORD
4h 22mnonstop
Frontier Logo
7:00 am - 9:29 amORD-LAX
4h 29mnonstop
$146Frontier
Find Deal
Thu, Oct 2 - Sat, Oct 4
American Airlines Logo
6:15 am - 12:42 pmSAN-ORD
4h 27mnonstop
American Airlines Logo
7:30 am - 9:59 amORD-SAN
4h 29mnonstop
$173American Airlines
Find Deal
Sat, Oct 4 - Sat, Oct 11
United Airlines Logo
4:00 pm - 11:59 pmBUR-ORD
5h 59m1 stop
United Airlines Logo
12:53 pm - 5:34 pmORD-BUR
6h 41m1 stop
$178United Airlines
Find Deal
Tue, Oct 7 - Sat, Oct 18
United Airlines Logo
1:10 pm - 9:15 pmBUR-ORD
6h 05m1 stop
United Airlines Logo
6:47 am - 12:08 pmORD-BUR
7h 21m1 stop
$183United Airlines
Find Deal
Fri, Feb 6 - Sun, Feb 8
American Airlines Logo
1:17 pm - 7:41 pmSAN-ORD
4h 24mnonstop
American Airlines Logo
5:06 pm - 7:29 pmORD-SAN
4h 23mnonstop
$188American Airlines
Find Deal
Wed, Oct 1 - Sat, Oct 18
Southwest Logo
7:05 am - 4:25 pmSAN-ORD
7h 20m1 stop
Southwest Logo
6:55 pm - 11:20 pmORD-SAN
6h 25m1 stop
$196Southwest
Find Deal
Wed, Oct 15 - Wed, Oct 15
Southwest Logo
4:00 pm - 10:00 pmLAX-MDW
4h 00mnonstop
Southwest Logo
9:25 pm - 11:55 pmMDW-LAX
4h 30mnonstop
$197Southwest
Find Deal
Tue, Oct 14 - Tue, Oct 21

Hawaiian Airlines flights from California to Illinois

Our best Hawaiian Airlines deals on California to Illinois flight tickets
Hawaiian Airlines
Oct 18
SAN5:19 pmSan Diego
4h 40m
ORD11:59 pmChicago O'Hare Intl
Oct 25
ORD10:00 amChicago O'Hare Intl
5h 00m
SAN1:00 pmSan Diego
$151
Find similar
Hawaiian Airlines
Oct 21
SAN12:20 pmSan Diego
4h 39m
ORD6:59 pmChicago O'Hare Intl
Oct 28
ORD9:20 amChicago O'Hare Intl
4h 25m
SAN11:45 amSan Diego
$153
Find similar
Hawaiian Airlines
Oct 14
SAN5:19 pmSan Diego
4h 40m
ORD11:59 pmChicago O'Hare Intl
Oct 21
ORD7:59 pmChicago O'Hare Intl
5h 00m
SAN10:59 pmSan Diego
$163
Find similar

Southwest flights from California to Illinois

Our best Southwest deals on California to Illinois flight tickets
Southwest
Oct 15
SAN7:05 amSan Diego
7h 20m
1 stop
ORD4:25 pmChicago O'Hare Intl
Oct 15
ORD6:55 pmChicago O'Hare Intl
6h 25m
1 stop
SAN11:20 pmSan Diego
$196
Find similar
Southwest
Oct 14
LAX4:00 pmLos Angeles
4h 00m
MDW10:00 pmChicago Midway
Oct 21
MDW9:25 pmChicago Midway
4h 30m
LAX11:55 pmLos Angeles
$197
Find similar
Southwest
Oct 28
SAN6:25 amSan Diego
8h 20m
2 stops
ORD4:45 pmChicago O'Hare Intl
Dec 2
ORD1:00 pmChicago O'Hare Intl
8h 00m
1 stop
SAN7:00 pmSan Diego
$202
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from California to Illinois 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 September 16, 2025.
Use the filters below to find and compare flights from California to Illinois that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BurbankChicago

BUR - ORD

BURORD

Burbank Bob Hope

Sat 10/11

12:13 pm-12:17 am

1 stop10h 04m

Chicago O'Hare Intl

Tue 10/14

6:40 am-3:45 pm

1 stop11h 05m

$125

Los AngelesChicago

LAX - ORD

LAXORD

Los Angeles

Sat 9/27

1:23 pm-11:58 pm

1 stop8h 35m

Chicago O'Hare Intl

Sat 10/4

7:09 pm-9:40 pm

Nonstop4h 31m

$143

Los AngelesChicago

LAX - ORD

LAXORD

Los Angeles

Sat 11/15

7:00 pm-7:54 am

1 stop10h 54m

Chicago O'Hare Intl

Mon 11/17

6:30 am-8:56 am

Nonstop4h 26m

$145

Los AngelesChicago

LAX - ORD

LAXORD

Los Angeles

Thu 10/2

4:21 pm-10:43 pm

Nonstop4h 22m

Chicago O'Hare Intl

Sat 10/4

7:00 am-9:29 am

Nonstop4h 29m

$146

San DiegoChicago

SAN - ORD

SANORD

San Diego

Sat 10/4

6:15 am-12:42 pm

Nonstop4h 27m

Chicago O'Hare Intl

Sat 10/11

7:30 am-9:59 am

Nonstop4h 29m

$173

BurbankChicago

BUR - ORD

BURORD

Burbank Bob Hope

Tue 10/7

4:00 pm-11:59 pm

1 stop5h 59m

Chicago O'Hare Intl

Sat 10/18

12:53 pm-5:34 pm

1 stop6h 41m

$178

BurbankChicago

BUR - ORD

BURORD

Burbank Bob Hope

Fri 2/6

1:10 pm-9:15 pm

1 stop6h 05m

Chicago O'Hare Intl

Sun 2/8

6:47 am-12:08 pm

1 stop7h 21m

$183

San DiegoChicago

SAN - ORD

SANORD

San Diego

Wed 10/1

1:17 pm-7:41 pm

Nonstop4h 24m

Chicago O'Hare Intl

Sat 10/18

5:06 pm-7:29 pm

Nonstop4h 23m

$188

San DiegoChicago

SAN - ORD

SANORD

San Diego

Wed 10/15

7:05 am-4:25 pm

1 stop7h 20m

Chicago O'Hare Intl

Wed 10/15

6:55 pm-11:20 pm

1 stop6h 25m

$196

Los AngelesChicago

LAX - MDW

LAXMDW

Los Angeles

Tue 10/14

4:00 pm-10:00 pm

Nonstop4h 00m

Chicago Midway

Tue 10/21

9:25 pm-11:55 pm

Nonstop4h 30m

$197

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 Illinois from

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

What is the cheapest month to fly to Illinois?

The cheapest month to fly to Illinois from California is in February. Flight prices, which tend to average around $247, 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 February, then flying in August is also cheap. Prices for this month can be found on momondo for an average of $263.

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 $361. Flights from California to Illinois on a Sunday will generally be more expensive and average around $457. 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 $280. Flights at noon are often more expensive with an average ticket price of $452.

What is the cheapest California to Illinois flight route?

Fly from Los Angeles to Chicago O'Hare Intl 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 $300 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 $254 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?

No. A direct flight is the cheapest option for a flight between 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

$142

Fastest flight time

3h 50m

Direct flights

Every day

Airports in Illinois

2 airports
The best one-way flight to Illinois from California in the past 72 hours is $142. The best round-trip flight deal from California to Illinois found on momondo in the last 72 hours is $215.
The fastest flight from California to Illinois takes 3h 50m
Direct flights go from California to Illinois every day.
There are 2 airports near Illinois: Chicago O'Hare Intl (ORD), Chicago Midway (MDW)
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  • 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?

  • 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?

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
FrontierPriceFrom $91Free CancellationRating
5.8
3,174 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $97Free CancellationRating
6.3
8,019 reviews
Search Spirit Airlines flights
Hawaiian AirlinesPriceFrom $108Free CancellationRating
7.8
2,724 reviews
Search Hawaiian Airlines flights
DeltaPriceFrom $128Free CancellationRating
7.9
7,957 reviews
Search Delta flights
Sun Country AirPriceFrom $130Free CancellationRating
6.9
330 reviews
Search Sun Country Air flights
United AirlinesPriceFrom $133Free CancellationRating
7.4
8,924 reviews
Search United Airlines flights
Alaska AirlinesPriceFrom $139Free CancellationRating
8.0
10,000 reviews
Search Alaska Airlines flights
SouthwestPriceFrom $157Free CancellationRating
8.0
4,242 reviews
Search Southwest flights
American AirlinesPriceFrom $167Free CancellationRating
7.2
10,000 reviews
Search American Airlines 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

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.
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