$60+ Cheap flights from Illinois to California
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/27. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — LAX
May 31 — Jun 71
Round-trip
1 adult, Economy
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Find cheap flights from Illinois to California with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Cheapest flights from Illinois to CaliforniaExplore the most affordable flight options available from Illinois to California. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 1, 2026.
Explore the most affordable flight options available from Illinois to California. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 1, 2026.
This Super.com deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/168:56 pm
ORD
- LAX
Nonstop4h 40m
Frontier
Mon 5/1812:31 am
LAX
- ORD
Nonstop4h 08m
Frontier
Deal found 4/28![Frontier logo]()
$157
This Expedia deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/128:56 pm
ORD
- LAX
Nonstop4h 40m
Frontier
Mon 5/1812:31 am
LAX
- ORD
Nonstop4h 08m
Frontier
Deal found 4/27![Frontier logo]()
$158
This Expedia deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/239:37 pm
ORD
- LAX
1 stop28h 39m
Frontier
Tue 5/2612:26 am
LAX
- ORD
Nonstop4h 08m
Frontier
Deal found 4/30![Frontier logo]()
$159
This CheapOair deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/149:37 pm
ORD
- LAX
1 stop12h 58m
Frontier
Mon 5/1812:31 am
LAX
- ORD
Nonstop4h 08m
Frontier
Deal found 4/28![Frontier logo]()
$160
This Frontier deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/3011:57 am
ORD
- LAX
1 stop12h 01m
Frontier
Sun 5/3112:26 am
LAX
- ORD
Nonstop4h 08m
Frontier
Deal found 4/30![Frontier logo]()
$161
This Frontier deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/3011:57 am
ORD
- LAX
1 stop12h 01m
Frontier
Mon 6/811:56 pm
LAX
- ORD
Nonstop4h 08m
Frontier
Deal found 4/28![Frontier logo]()
$162
This Super.com deal was found by Cheapflights users on 5/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/268:46 pm
ORD
- LAX
Nonstop4h 40m
Frontier
Thu 5/2812:26 am
LAX
- ORD
Nonstop4h 08m
Frontier
Deal found 5/1![Frontier logo]()
$163
This Frontier deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/298:46 pm
ORD
- LAX
Nonstop4h 40m
Frontier
Sat 5/3012:26 am
LAX
- ORD
Nonstop4h 08m
Frontier
Deal found 4/29![Frontier logo]()
$164
This Frontier deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/278:46 pm
ORD
- LAX
Nonstop4h 40m
Frontier
Sun 5/3112:26 am
LAX
- ORD
Nonstop4h 08m
Frontier
Deal found 4/30![Frontier logo]()
$165
This Kiwi.com deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/298:46 pm
ORD
- LAX
Nonstop4h 40m
Multiple Airlines
Sat 5/3011:59 pm
LAX
- ORD
Nonstop4h 00m
Multiple Airlines
Deal found 4/30![Multiple Airlines logo]()
$166
This Kiwi.com deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/127:15 am
ORD
- LAX
1 stop17h 49m
Multiple Airlines
Tue 8/189:43 am
LAX
- ORD
1 stop9h 10m
Multiple Airlines
Deal found 4/30![Multiple Airlines logo]()
$167
This Kiwi.com deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/69:00 am
ORD
- LAX
1 stop10h 12m
Frontier
Mon 5/1812:31 am
LAX
- ORD
Nonstop4h 08m
Frontier
Deal found 4/27![Frontier logo]()
$168
Best flights from Illinois to CaliforniaDiscover carefully curated flight deals from Illinois to California that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 1, 2026.
Discover carefully curated flight deals from Illinois to California that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 1, 2026.
This United Airlines deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/249:20 pm
ORD
- LAX
Nonstop4h 39m
United Airlines
Tue 6/306:58 pm
LAX
- ORD
Nonstop4h 17m
United Airlines
Deal found 4/28![United Airlines logo]()
$199
This Delta deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/93:55 pm
ORD
- LAX
1 stop7h 00m
Delta
Wed 6/177:40 am
LAX
- ORD
Nonstop4h 10m
Delta
Deal found 4/27![Delta logo]()
$227
This Southwest deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/236:45 am
MDW
- LAX
Nonstop4h 25m
Southwest
Tue 5/265:00 am
LAX
- MDW
1 stop6h 30m
Southwest
Deal found 4/28![Southwest logo]()
$230
This Alaska Airlines deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/26:00 am
ORD
- SAN
1 stop11h 00m
Alaska Airlines
Wed 6/311:18 am
SAN
- ORD
1 stop9h 41m
Alaska Airlines
Deal found 4/30![Alaska Airlines logo]()
$287
This Cheapflightsfares deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/59:06 pm
STL
- LAS
Nonstop3h 36m
Frontier
Mon 6/82:43 pm
LAS
- STL
Nonstop3h 28m
Frontier
Deal found 4/26![Frontier logo]()
$305
This American Airlines deal was found by Cheapflights users on 5/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/109:40 am
ORD
- SNA
1 stop8h 00m
American Airlines
Tue 6/163:21 pm
SNA
- ORD
Nonstop4h 24m
American Airlines
Deal found 5/1![American Airlines logo]()
$350
This CheapOair deal was found by Cheapflights users on 5/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/209:37 pm
ORD
- SAN
1 stop13h 05m
Multiple Airlines
Sat 5/2311:47 am
SAN
- ORD
1 stop20h 07m
Multiple Airlines
Deal found 5/1![Multiple Airlines logo]()
$374
This Delta deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/86:30 pm
ORD
- LAX
Nonstop4h 45m
Delta
Tue 6/911:10 am
LAX
- ORD
Nonstop4h 10m
Delta
Deal found 4/26![Delta logo]()
$229
This United Airlines deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/287:00 am
ORD
- LAX
Nonstop4h 33m
United Airlines
Sat 5/305:00 pm
LAX
- ORD
Nonstop4h 15m
United Airlines
Deal found 4/29![United Airlines logo]()
$241
This Delta deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/611:09 am
ORD
- LAX
1 stop8h 56m
Delta
Tue 6/97:40 am
LAX
- ORD
Nonstop4h 10m
Delta
Deal found 4/27![Delta logo]()
$239
This Southwest deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/2710:10 am
MDW
- LAX
Nonstop4h 30m
Southwest
Wed 6/35:15 am
LAX
- MDW
Nonstop4h 00m
Southwest
Deal found 4/29![Southwest logo]()
$265
This United Airlines deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/2010:52 am
ORD
- LAS
Nonstop4h 11m
United Airlines
Sat 5/2311:30 pm
LAS
- ORD
Nonstop3h 41m
United Airlines
Deal found 4/27![United Airlines logo]()
$263
This Southwest deal was found by Cheapflights users on 5/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/34:00 pm
MDW
- LAS
1 stop6h 00m
Southwest
Mon 6/86:10 am
LAS
- MDW
Nonstop3h 35m
Southwest
Deal found 5/1![Southwest logo]()
$269
This Alaska Airlines deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/239:00 am
ORD
- SAN
Nonstop4h 37m
Alaska Airlines
Mon 6/18:04 pm
SAN
- ORD
1 stop8h 16m
Alaska Airlines
Deal found 4/27![Alaska Airlines logo]()
$297
This Delta deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/303:00 pm
ORD
- LAX
1 stop7h 30m
Delta
Tue 6/309:33 am
LAX
- ORD
1 stop8h 59m
Delta
Deal found 4/30![Delta logo]()
$249
This United Airlines deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/33:47 pm
ORD
- LAS
1 stop6h 34m
United Airlines
Mon 6/811:30 pm
LAS
- ORD
Nonstop3h 41m
United Airlines
Deal found 4/29![United Airlines logo]()
$273
This Delta deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/65:19 pm
ORD
- LAX
1 stop7h 23m
Delta
Mon 6/85:15 pm
LAX
- ORD
Nonstop4h 03m
Delta
Deal found 4/26![Delta logo]()
$251
This Alaska Airlines deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/106:20 am
ORD
- LAS
1 stop9h 38m
Alaska Airlines
Thu 6/182:38 pm
LAS
- ORD
1 stop6h 58m
Alaska Airlines
Deal found 4/28![Alaska Airlines logo]()
$312
This Southwest deal was found by Cheapflights users on 5/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/278:55 pm
MDW
- LAX
Nonstop4h 25m
Southwest
Mon 6/111:55 pm
LAX
- MDW
Nonstop3h 55m
Southwest
Deal found 5/1![Southwest logo]()
$286
This Alaska Airlines deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/57:59 pm
ORD
- SAN
Nonstop4h 37m
Alaska Airlines
Sun 6/75:44 pm
SAN
- ORD
Nonstop4h 11m
Alaska Airlines
Deal found 4/26![Alaska Airlines logo]()
$317
This American Airlines deal was found by Cheapflights users on 5/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/209:00 pm
ORD
- SAN
Nonstop4h 33m
American Airlines
Sat 5/2310:45 pm
SAN
- ORD
Nonstop4h 33m
American Airlines
Deal found 5/1![American Airlines logo]()
$387
This Delta deal was found by Cheapflights users on 5/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/68:10 am
ORD
- SAN
1 stop10h 20m
Delta
Tue 6/96:20 am
SAN
- ORD
1 stop8h 42m
Delta
Deal found 5/1![Delta logo]()
$267
This Southwest deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/278:55 pm
MDW
- LAS
Nonstop3h 55m
Southwest
Fri 5/295:30 am
LAS
- MDW
Nonstop3h 30m
Southwest
Deal found 4/27![Southwest logo]()
$297
This United Airlines deal was found by Cheapflights users on 5/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/264:20 pm
ORD
- LAS
Nonstop3h 57m
United Airlines
Mon 9/2812:30 am
LAS
- ORD
Nonstop3h 38m
United Airlines
Deal found 5/1![United Airlines logo]()
$307
This Alaska Airlines deal was found by Cheapflights users on 5/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/57:00 am
ORD
- SFO
1 stop7h 39m
Alaska Airlines
Mon 9/289:27 am
SFO
- ORD
1 stop7h 36m
Alaska Airlines
Deal found 5/1![Alaska Airlines logo]()
$324
This Delta deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/292:00 pm
ORD
- LAX
1 stop8h 41m
Delta
Sat 6/62:05 pm
LAX
- ORD
1 stop7h 50m
Delta
Deal found 4/30![Delta logo]()
$269
This Southwest deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/284:00 pm
MDW
- LAS
Nonstop3h 50m
Southwest
Wed 9/23:10 pm
LAS
- MDW
Nonstop3h 35m
Southwest
Deal found 4/29![Southwest logo]()
$307
This United Airlines deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/309:30 pm
ORD
- LAX
Nonstop4h 39m
United Airlines
Thu 7/25:00 pm
LAX
- ORD
Nonstop4h 16m
United Airlines
Deal found 4/28![United Airlines logo]()
$308
This Alaska Airlines deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/26:00 am
ORD
- SFO
1 stop10h 49m
Alaska Airlines
Mon 10/512:02 pm
SFO
- ORD
1 stop9h 39m
Alaska Airlines
Deal found 4/26![Alaska Airlines logo]()
$324
This Delta deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/15:30 am
ORD
- LAS
1 stop7h 37m
Delta
Sat 7/49:32 am
LAS
- ORD
1 stop5h 55m
Delta
Deal found 4/26![Delta logo]()
$277
Last-minute flights from Illinois to CaliforniaDiscover last-minute flight deals from Illinois to California. Data last updated May 1, 2026 and is based on user searches.
Discover last-minute flight deals from Illinois to California. Data last updated May 1, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/69:00 am
ORD
- LAX
1 stop10h 12m
Frontier
Mon 5/1812:31 am
LAX
- ORD
Nonstop4h 08m
Frontier
Deal found 4/27![Frontier logo]()
$168
This Kiwi.com deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/119:37 pm
ORD
- LAX
1 stop13h 18m
Frontier
Mon 5/1812:31 am
LAX
- ORD
Nonstop4h 08m
Frontier
Deal found 4/27![Frontier logo]()
$167
This Expedia deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/128:56 pm
ORD
- LAX
Nonstop4h 40m
Frontier
Mon 5/1812:31 am
LAX
- ORD
Nonstop4h 08m
Frontier
Deal found 4/27![Frontier logo]()
$158
This CheapOair deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/149:37 pm
ORD
- LAX
1 stop12h 58m
Frontier
Mon 5/1812:31 am
LAX
- ORD
Nonstop4h 08m
Frontier
Deal found 4/28![Frontier logo]()
$160
This Super.com deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/168:56 pm
ORD
- LAX
Nonstop4h 40m
Frontier
Mon 5/1812:31 am
LAX
- ORD
Nonstop4h 08m
Frontier
Deal found 4/28![Frontier logo]()
$157
This Expedia deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/239:37 pm
ORD
- LAX
1 stop28h 39m
Frontier
Tue 5/2612:26 am
LAX
- ORD
Nonstop4h 08m
Frontier
Deal found 4/30![Frontier logo]()
$159
This Super.com deal was found by Cheapflights users on 5/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/268:46 pm
ORD
- LAX
Nonstop4h 40m
Frontier
Thu 5/2812:26 am
LAX
- ORD
Nonstop4h 08m
Frontier
Deal found 5/1![Frontier logo]()
$163
This Frontier deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/278:46 pm
ORD
- LAX
Nonstop4h 40m
Frontier
Sun 5/3112:26 am
LAX
- ORD
Nonstop4h 08m
Frontier
Deal found 4/30![Frontier logo]()
$165
This Frontier deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/298:46 pm
ORD
- LAX
Nonstop4h 40m
Frontier
Sat 5/3012:26 am
LAX
- ORD
Nonstop4h 08m
Frontier
Deal found 4/29![Frontier logo]()
$164
This Kiwi.com deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/298:46 pm
ORD
- LAX
Nonstop4h 40m
Multiple Airlines
Sat 5/3011:59 pm
LAX
- ORD
Nonstop4h 00m
Multiple Airlines
Deal found 4/30![Multiple Airlines logo]()
$166
This Frontier deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/3011:57 am
ORD
- LAX
1 stop12h 01m
Frontier
Sun 5/3112:26 am
LAX
- ORD
Nonstop4h 08m
Frontier
Deal found 4/30![Frontier logo]()
$161
This Frontier deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/3011:57 am
ORD
- LAX
1 stop12h 01m
Frontier
Mon 6/811:56 pm
LAX
- ORD
Nonstop4h 08m
Frontier
Deal found 4/28![Frontier logo]()
$162
One-way flights from Illinois to CaliforniaSearch for one-way flight options from Illinois to California. Find affordable one-way fares based on user searches. Data last updated May 1, 2026.
Search for one-way flight options from Illinois to California. Find affordable one-way fares based on user searches. Data last updated May 1, 2026.
This Trip.com deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/279:37 pm
ORD
- ONT
1 stop14h 28m
Frontier
Deal found 4/27![Frontier logo]()
$60
This Kiwi.com deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/98:08 pm
STL
- LAS
1 stop23h 21m
Frontier
Deal found 4/27![Frontier logo]()
$76
This Cheapflightsfares deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/117:03 pm
STL
- LAS
Nonstop3h 33m
Frontier
Deal found 4/30![Frontier logo]()
$79
This Cheapflightsfares deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/268:08 pm
STL
- LAS
1 stop5h 21m
Frontier
Deal found 4/29![Frontier logo]()
$80
This Super.com deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/239:37 pm
ORD
- ONT
1 stop14h 28m
Frontier
Deal found 4/29![Frontier logo]()
$85
This Trip.com deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/107:20 am
ORD
- ONT
1 stop9h 48m
Frontier
Deal found 4/30![Frontier logo]()
$86
This Super.com deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/307:46 pm
STL
- LAS
Nonstop3h 34m
Frontier
Deal found 4/26![Frontier logo]()
$88
This Kiwi.com deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/238:08 pm
STL
- LAS
1 stop19h 40m
Frontier
Deal found 4/29![Frontier logo]()
$89
This Kiwi.com deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/15:27 pm
STL
- LAS
1 stop29h 24m
Frontier
Deal found 4/30![Frontier logo]()
$90
This eDestinos deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/29:07 pm
ORD
- LAX
Nonstop4h 36m
Frontier
Deal found 4/26![Frontier logo]()
$91
This Kiwi.com deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/288:46 pm
ORD
- LAX
Nonstop4h 40m
Frontier
Deal found 4/28![Frontier logo]()
$95
This Super.com deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/49:13 pm
ORD
- LAX
Nonstop4h 36m
Frontier
Deal found 4/28![Frontier logo]()
$96
Find flight deals from Illinois to California
Keep the following information in mind while searching for Illinois to California flight deals. Data was last updated May 1, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $157 (Super.com) |
One-way from | $60 (Trip.com) |
Popular in | December |
Cheapest in | September |
Average price | $258 |
Good round-trip deal | $283 or less |
Good one-way deal | $139 or less |
Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated May 1, 2026.
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
Cheapest round-trip
ChicagoLos Angeles
ORD - LAX
ORDLAX
Chicago O'Hare Intl
Wed 6/24
9:20 pm-11:59 pm
Nonstop4h 39m
Los Angeles
Tue 6/30
6:58 pm-1:15 am
Nonstop4h 17m
$199
ChicagoLos Angeles
ORD - LAX
ORDLAX
Chicago O'Hare Intl
Tue 6/9
3:55 pm-8:55 pm
1 stop7h 00m
Los Angeles
Wed 6/17
7:40 am-1:50 pm
Nonstop4h 10m
$227
ChicagoLos Angeles
ORD - LAX
ORDLAX
Chicago O'Hare Intl
Mon 6/8
6:30 pm-9:15 pm
Nonstop4h 45m
Los Angeles
Tue 6/9
11:10 am-5:20 pm
Nonstop4h 10m
$229
ChicagoLos Angeles
MDW - LAX
MDWLAX
Chicago Midway
Sat 5/23
6:45 am-9:10 am
Nonstop4h 25m
Los Angeles
Tue 5/26
5:00 am-1:30 pm
1 stop6h 30m
$230
ChicagoLos Angeles
ORD - LAX
ORDLAX
Chicago O'Hare Intl
Sat 6/6
11:09 am-6:05 pm
1 stop8h 56m
Los Angeles
Tue 6/9
7:40 am-1:50 pm
Nonstop4h 10m
$239
ChicagoLos Angeles
ORD - LAX
ORDLAX
Chicago O'Hare Intl
Thu 5/28
7:00 am-9:33 am
Nonstop4h 33m
Los Angeles
Sat 5/30
5:00 pm-11:15 pm
Nonstop4h 15m
$241
ChicagoLos Angeles
ORD - LAX
ORDLAX
Chicago O'Hare Intl
Sat 5/30
3:00 pm-8:30 pm
1 stop7h 30m
Los Angeles
Tue 6/30
9:33 am-8:32 pm
1 stop8h 59m
$249
ChicagoLos Angeles
ORD - LAX
ORDLAX
Chicago O'Hare Intl
Sat 6/6
5:19 pm-10:42 pm
1 stop7h 23m
Los Angeles
Mon 6/8
5:15 pm-11:18 pm
Nonstop4h 03m
$251
ChicagoLas Vegas
ORD - LAS
ORDLAS
Chicago O'Hare Intl
Wed 5/20
10:52 am-1:03 pm
Nonstop4h 11m
Las Vegas Harry Reid Intl
Sat 5/23
11:30 pm-5:11 am
Nonstop3h 41m
$263
ChicagoLos Angeles
MDW - LAX
MDWLAX
Chicago Midway
Wed 5/27
10:10 am-12:40 pm
Nonstop4h 30m
Los Angeles
Wed 6/3
5:15 am-11:15 am
Nonstop4h 00m
$265
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Illinois to California
Have a flexible travel schedule? Discover the best time to fly to California from Illinois with our price prediction graph.
ORD-LAX
MDW-LAX
ORD-SAN
ORD-BUR
ORD-SNA
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Illinois to California
USIL-USCA
ORD-LAX
MDW-LAX
ORD-SAN
ORD-BUR
How far ahead should I book a flight from Illinois to California?
The price you pay for your flight from Illinois to California may vary depending on when you book. For the best chance of a lower fare, look to book 46 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
What is the cheapest month to book a flight from Illinois to California?
Currently, August is the cheapest month in which you can book a flight from Illinois to California (average of $272). Flying from Illinois to California in March is currently the most expensive (average of $413). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from IL to CA?
Find hourly flight availability from Illinois to California. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated May 1, 2026.
A simple way to save on the total cost of your ticket is to fly from Illinois to California in the evening. If you’re flexible enough to do this you can expect to save up to 11% on your trip compared to booking a flight at noon.
What is the cheapest day to fly from Illinois to California?
Use this chart to determine the cheapest time to fly round-trip from Illinois to California. Price data was last updated on April 25, 2026.
Travelers seeking maximum savings on their Illinois to California flight should consider departing on Monday evenings when fares are most often at their lowest. Monday mornings flights should be avoided if possible as fares are typically the most expensive at this time.
Weekly flight availability from Illinois to California
Explore weekly flight availability from Illinois to California. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated May 1, 2026.
The most flights from USIL to USCA are scheduled on a Friday (116 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (78 on average).
How much does it cost to fly round-trip from Illinois to California?
Reviews of airlines servicing California
Get insights into the airlines that provide service to California. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to California. Reviews last updated May 1, 2026.
See what other customers who have flown with Southwest,United Airlines, andAmerican Airlines from Illinois to California have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.6
Entertainment
7.5
Food
7.0
Overall
8.0
Comfort
8.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Crew
8.6
Entertainment
7.5
Food
7.0
Overall
8.0
Comfort
8.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Crew
8.6
Entertainment
7.5
Food
7.0
Overall
8.0
Comfort
8.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Crew
8.6
Entertainment
7.5
Food
7.0
Overall
8.0
Comfort
8.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Crew
8.6
Entertainment
7.5
Food
7.0
Overall
8.0
Comfort
8.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Crew
8.6
Entertainment
7.5
Food
7.0
Overall
8.0
Comfort
8.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Related info for your journey
Find useful and relevant information for your journey from Illinois to California. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
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Alternative routes for Illinois to California
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to California by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Illinois to California by cabin class
Find flights from Illinois to California, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Illinois and California flights
Browse other Illinois and California flight options. Last updated on May 1, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Find a return flight route from California
Find the right flight back to Illinois after your stay in California
Illinois to California flights
Consider these flights traveling from Illinois to California.
Top 9 airlines flying from Illinois to California
Discover the top 9 airlines that operate flights from Illinois to California. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated May 1, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$84 | Average$238 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$84 | Average$188 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$108 | Average$228 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$128 | Average$351 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$138 | Average$443 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$139 | Average$390 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$147 | Average$326 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$157 | Average$454 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$157 | Average$444 | FlexibilityNo cancel fee | On-time69% |