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Cheap flights from California to Illinois from $82

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 6/3. 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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0 bags

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Find the cheapest flights from California to Illinois

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
12:26 am - 6:34 am
LAX
-
ORD
4h 08mnonstop
Frontier Logo
9:37 pm - 8:55 am
ORD
-
LAX
13h 18m
1 stop
$188Frontier
Fri, May 29 - Mon, Jun 1
Frontier Logo
12:31 am - 6:39 am
LAX
-
ORD
4h 08mnonstop
Frontier Logo
8:46 pm - 11:26 pm
ORD
-
LAX
4h 40mnonstop
$190Frontier
Mon, May 18 - Fri, May 29
United Airlines Logo
5:00 pm - 11:16 pm
LAX
-
ORD
4h 16mnonstop
United Airlines Logo
6:00 am - 8:27 am
ORD
-
LAX
4h 27mnonstop
$199United Airlines
Tue, Jun 2 - Tue, Jun 9
Southwest Logo
11:55 pm - 5:50 am
LAX
-
MDW
3h 55mnonstop
Southwest Logo
5:35 am - 7:50 am
MDW
-
LAX
4h 15mnonstop
$199Southwest
Tue, Jun 2 - Tue, Jun 9
Southwest Logo
5:00 pm - 10:55 pm
LAX
-
MDW
3h 55mnonstop
Southwest Logo
5:25 am - 9:35 am
MDW
-
LAX
6h 10m
1 stop
$209Southwest
Tue, Jul 7 - Tue, Jul 14
United Airlines Logo
10:40 pm - 4:49 am
SAN
-
ORD
4h 09mnonstop
United Airlines Logo
7:00 am - 9:28 am
ORD
-
SAN
4h 28mnonstop
$247United Airlines
Wed, Jun 3 - Sat, Jun 6
American Airlines Logo
6:15 am - 12:40 pm
SAN
-
ORD
4h 25mnonstop
American Airlines Logo
6:59 pm - 9:27 pm
ORD
-
SAN
4h 28mnonstop
$248American Airlines
Sat, May 30 - Tue, Jun 9
Alaska Airlines Logo
1:14 pm - 10:59 pm
SJC
-
ORD
7h 45m
1 stop
Alaska Airlines Logo
2:10 pm - 7:22 pm
ORD
-
SJC
7h 12m
1 stop
$277Alaska Airlines
Tue, Jun 2 - Wed, Jun 3
American Airlines Logo
6:00 am - 12:35 pm
SFO
-
ORD
4h 35mnonstop
American Airlines Logo
6:29 am - 9:27 am
ORD
-
SFO
4h 58mnonstop
$282American Airlines
Tue, May 26 - Wed, Jun 24
Alaska Airlines Logo
7:06 am - 6:50 pm
SJC
-
ORD
9h 44m
1 stop
Alaska Airlines Logo
7:59 pm - 9:26 am
ORD
-
SJC
15h 27m
1 stop
$285Alaska Airlines
Sat, Jun 6 - Wed, Jun 10

United Airlines flights from California to Illinois

Our best United Airlines deals on California to Illinois flight tickets
United Airlines
Jun 2
LAX5:00 pmLos Angeles
4h 16m
ORD11:16 pmChicago O'Hare Intl
Jun 9
ORD6:00 amChicago O'Hare Intl
4h 27m
LAX8:27 amLos Angeles
$199
United Airlines
Jun 8
LAX12:13 amLos Angeles
4h 19m
ORD6:32 amChicago O'Hare Intl
Jun 23
ORD6:00 amChicago O'Hare Intl
4h 27m
LAX8:27 amLos Angeles
$204
United Airlines
May 28
LAX5:10 amLos Angeles
4h 15m
ORD11:25 amChicago O'Hare Intl
Jun 3
ORD6:00 amChicago O'Hare Intl
4h 27m
LAX8:27 amLos Angeles
$220

Delta flights from California to Illinois

Our best Delta deals on California to Illinois flight tickets
Delta
Jun 9
LAX5:15 pmLos Angeles
4h 03m
ORD11:18 pmChicago O'Hare Intl
Jun 16
ORD2:09 pmChicago O'Hare Intl
6h 01m
1 stop
LAX6:10 pmLos Angeles
$209
Delta
Aug 11
LAX7:35 amLos Angeles
4h 06m
ORD1:41 pmChicago O'Hare Intl
Aug 19
ORD2:36 pmChicago O'Hare Intl
4h 32m
LAX5:08 pmLos Angeles
$217
Delta
Jun 9
LAX5:15 pmLos Angeles
4h 03m
ORD11:18 pmChicago O'Hare Intl
Jun 16
ORD6:30 amChicago O'Hare Intl
9h 04m
1 stop
LAX1:34 pmLos Angeles
$219

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 May 8, 2026.
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

Cheapest round-trip

Los AngelesChicago

LAX - ORD

LAXORD

Los Angeles

Fri 5/29

12:26 am-6:34 am

Nonstop4h 08m

Chicago O'Hare Intl

Mon 6/1

9:37 pm-8:55 am

1 stop13h 18m

$188

Los AngelesChicago

LAX - ORD

LAXORD

Los Angeles

Mon 5/18

12:31 am-6:39 am

Nonstop4h 08m

Chicago O'Hare Intl

Fri 5/29

8:46 pm-11:26 pm

Nonstop4h 40m

$190

Los AngelesChicago

LAX - ORD

LAXORD

Los Angeles

Tue 6/2

5:00 pm-11:16 pm

Nonstop4h 16m

Chicago O'Hare Intl

Tue 6/9

6:00 am-8:27 am

Nonstop4h 27m

$199
Quickest round-trip

Los AngelesChicago

LAX - MDW

LAXMDW

Los Angeles

Tue 6/2

11:55 pm-5:50 am

Nonstop3h 55m

Chicago Midway

Tue 6/9

5:35 am-7:50 am

Nonstop4h 15m

$199

Los AngelesChicago

LAX - MDW

LAXMDW

Los Angeles

Tue 7/7

5:00 pm-10:55 pm

Nonstop3h 55m

Chicago Midway

Tue 7/14

5:25 am-9:35 am

1 stop6h 10m

$209

San DiegoChicago

SAN - ORD

SANORD

San Diego

Wed 6/3

10:40 pm-4:49 am

Nonstop4h 09m

Chicago O'Hare Intl

Sat 6/6

7:00 am-9:28 am

Nonstop4h 28m

$247

San DiegoChicago

SAN - ORD

SANORD

San Diego

Sat 5/30

6:15 am-12:40 pm

Nonstop4h 25m

Chicago O'Hare Intl

Tue 6/9

6:59 pm-9:27 pm

Nonstop4h 28m

$248

San JoseChicago

SJC - ORD

SJCORD

San Jose

Tue 6/2

1:14 pm-10:59 pm

1 stop7h 45m

Chicago O'Hare Intl

Wed 6/3

2:10 pm-7:22 pm

1 stop7h 12m

$277

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Tue 5/26

6:00 am-12:35 pm

Nonstop4h 35m

Chicago O'Hare Intl

Wed 6/24

6:29 am-9:27 am

Nonstop4h 58m

$282

San JoseChicago

SJC - ORD

SJCORD

San Jose

Sat 6/6

7:06 am-6:50 pm

1 stop9h 44m

Chicago O'Hare Intl

Wed 6/10

7:59 pm-9:26 am

1 stop15h 27m

$285

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 September. Flight prices, which tend to average around $301, 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 $304.

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 $372. Flights from California to Illinois on a Sunday will generally be more expensive and average around $441. 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 $299. Flights at noon are often more expensive with an average ticket price of $483.

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 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 $326 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 $271 on momondo.

Can stopping save me money on California to Illinois flights?

You could potentially save up to 5% 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

$163

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 $163. 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?

  • 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 $51Free CancellationRating
5.6
2,961 reviews
Search Frontier flights
Hawaiian AirlinesPriceFrom $101Free CancellationRating
7.8
2,837 reviews
Search Hawaiian Airlines flights
Spirit AirlinesPriceFrom $103Free CancellationRating
6.3
8,638 reviews
Search Spirit Airlines flights
DeltaPriceFrom $122Free CancellationRating
7.9
8,456 reviews
Search Delta flights
United AirlinesPriceFrom $133Free CancellationRating
7.4
9,693 reviews
Search United Airlines flights
Alaska AirlinesPriceFrom $149Free CancellationRating
7.9
12,345 reviews
Search Alaska Airlines flights
American AirlinesPriceFrom $157Free CancellationRating
7.1
11,667 reviews
Search American Airlines flights
JetBluePriceFrom $166Free CancellationRating
7.1
2,979 reviews
Search JetBlue flights
SouthwestPriceFrom $179Free CancellationRating
7.9
4,302 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.

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Find better results for your trip to Illinois

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