$48+ 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 8/20. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — LAX
juli 15 — juli 221
Round-trip
1 adult, Economy
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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 juni 15, 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 juni 15, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/13. 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.
tir. 9/19:48 pm
ORD
- ONT
1 stop14h 17m
Frontier
tir. 9/156:00 am
ONT
- ORD
1 stop13h 35m
Frontier
Deal found 6/13![Frontier logo]()
$171
This Kiwi.com deal was found by Cheapflights users on 6/13. 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.
ons. 9/29:48 pm
ORD
- ONT
1 stop28h 01m
Frontier
tir. 9/156:00 am
ONT
- ORD
1 stop13h 35m
Frontier
Deal found 6/13![Frontier logo]()
$185
This Southwest deal was found by Cheapflights users on 6/11. 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.
tir. 8/258:45 pm
MDW
- LAX
Nonstop4h 20m
Southwest
tir. 9/18:30 pm
LAX
- MDW
1 stop6h 30m
Southwest
Deal found 6/11![Southwest logo]()
$199
This Kiwi.com deal was found by Cheapflights users on 6/11. 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.
tir. 8/259:07 pm
ORD
- LAX
Nonstop4h 36m
Frontier
lør. 8/296:30 am
LAX
- ORD
1 stop12h 23m
Frontier
Deal found 6/11![Frontier logo]()
$199
This Frontier deal was found by Cheapflights users on 6/11. 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.
ons. 7/229:13 pm
ORD
- LAX
Nonstop4h 44m
Frontier
man. 7/2711:59 pm
LAX
- ORD
Nonstop4h 18m
Frontier
Deal found 6/11![Frontier logo]()
$200
This Southwest deal was found by Cheapflights users on 6/11. 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.
fre. 8/148:25 am
STL
- LAS
2 stops7h 15m
Southwest
fre. 8/219:45 am
LAS
- STL
1 stop6h 10m
Southwest
Deal found 6/11![Southwest logo]()
$200
This Kiwi.com deal was found by Cheapflights users on 6/10. 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.
tir. 9/19:07 pm
ORD
- LAX
Nonstop4h 36m
Frontier
søn. 9/611:59 pm
LAX
- ORD
Nonstop4h 20m
Frontier
Deal found 6/10![Frontier logo]()
$201
This Frontier deal was found by Cheapflights users on 6/14. 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.
tir. 7/77:03 pm
STL
- LAS
Nonstop3h 33m
Frontier
fre. 7/1012:50 pm
LAS
- STL
Nonstop3h 25m
Frontier
Deal found 6/14![Frontier logo]()
$201
This Kiwi.com deal was found by Cheapflights users on 6/10. 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.
tir. 9/19:07 pm
ORD
- LAX
Nonstop4h 36m
Frontier
fre. 9/48:56 pm
LAX
- ORD
1 stop21h 57m
Frontier
Deal found 6/10![Frontier logo]()
$202
This Cheapflightsfares deal was found by Cheapflights users on 6/11. 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.
fre. 7/177:10 pm
STL
- LAS
Nonstop3h 33m
Frontier
fre. 7/2412:50 pm
LAS
- STL
Nonstop3h 25m
Frontier
Deal found 6/11![Frontier logo]()
$202
This Super.com deal was found by Cheapflights users on 6/11. 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.
tor. 7/169:13 pm
ORD
- LAX
Nonstop4h 44m
Frontier
fre. 7/2411:59 pm
LAX
- ORD
Nonstop4h 18m
Frontier
Deal found 6/11![Frontier logo]()
$203
This Kiwi.com deal was found by Cheapflights users on 6/15. 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.
lør. 8/17:10 pm
STL
- LAS
Nonstop3h 33m
Frontier
ons. 8/52:28 pm
LAS
- STL
2 stops25h 09m
Frontier
Deal found 6/15![Frontier logo]()
$203
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 juni 15, 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 juni 15, 2026.
This Southwest deal was found by Cheapflights users on 6/14. 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.
søn. 8/28:20 pm
STL
- LAS
1 stop5h 10m
Southwest
tor. 8/611:25 am
LAS
- STL
2 stops6h 45m
Southwest
Deal found 6/14![Southwest logo]()
$204
This Delta deal was found by Cheapflights users on 6/15. 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.
man. 7/137:55 pm
STL
- LAS
1 stop5h 45m
Delta
man. 7/205:00 pm
LAS
- STL
1 stop5h 41m
Delta
Deal found 6/15![Delta logo]()
$217
This United Airlines deal was found by Cheapflights users on 6/11. 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.
fre. 8/148:50 am
ORD
- LAX
Nonstop4h 33m
United Airlines
ons. 8/195:30 am
LAX
- ORD
Nonstop4h 16m
United Airlines
Deal found 6/11![United Airlines logo]()
$229
This Alaska Airlines deal was found by Cheapflights users on 6/14. 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.
lør. 7/46:20 am
ORD
- LAS
1 stop13h 12m
Alaska Airlines
tir. 7/76:19 pm
LAS
- ORD
1 stop17h 02m
Alaska Airlines
Deal found 6/14![Alaska Airlines logo]()
$283
This Delta deal was found by Cheapflights users on 6/14. 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.
tir. 8/43:50 pm
STL
- LAS
1 stop6h 26m
Delta
tor. 8/65:02 pm
LAS
- STL
1 stop5h 39m
Delta
Deal found 6/14![Delta logo]()
$217
This Southwest deal was found by Cheapflights users on 6/11. 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.
fre. 8/148:45 pm
MDW
- LAX
Nonstop4h 20m
Southwest
ons. 8/199:05 am
LAX
- MDW
1 stop6h 05m
Southwest
Deal found 6/11![Southwest logo]()
$239
This Delta deal was found by Cheapflights users on 6/10. 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.
tor. 8/135:56 pm
ORD
- LAX
1 stop8h 36m
Delta
ons. 8/1912:37 pm
LAX
- ORD
1 stop7h 10m
Delta
Deal found 6/10![Delta logo]()
$233
This United Airlines deal was found by Cheapflights users on 6/13. 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.
man. 8/244:40 pm
STL
- LAS
1 stop6h 11m
United Airlines
tir. 9/87:15 am
LAS
- STL
1 stop6h 23m
United Airlines
Deal found 6/13![United Airlines logo]()
$266
This Southwest deal was found by Cheapflights users on 6/11. 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.
man. 7/276:30 am
MDW
- LAS
Nonstop3h 50m
Southwest
ons. 8/53:20 pm
LAS
- MDW
1 stop5h 30m
Southwest
Deal found 6/11![Southwest logo]()
$256
This Delta deal was found by Cheapflights users on 6/11. 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.
tir. 8/257:44 pm
ORD
- LAX
1 stop6h 01m
Delta
lør. 8/2912:07 pm
LAX
- ORD
1 stop9h 22m
Delta
Deal found 6/11![Delta logo]()
$233
This Alaska Airlines deal was found by Cheapflights users on 6/10. 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.
ons. 8/196:00 am
ORD
- SAN
1 stop9h 19m
Alaska Airlines
fre. 8/215:45 pm
SAN
- ORD
Nonstop4h 14m
Alaska Airlines
Deal found 6/10![Alaska Airlines logo]()
$286
This United Airlines deal was found by Cheapflights users on 6/10. 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.
tor. 8/207:20 am
ORD
- LAS
Nonstop4h 07m
United Airlines
man. 8/2411:55 pm
LAS
- ORD
Nonstop3h 30m
United Airlines
Deal found 6/10![United Airlines logo]()
$275
This Delta deal was found by Cheapflights users on 6/10. 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.
ons. 8/196:45 pm
ORD
- LAX
1 stop7h 08m
Delta
lør. 8/226:00 am
LAX
- ORD
1 stop8h 17m
Delta
Deal found 6/10![Delta logo]()
$233
This Southwest deal was found by Cheapflights users on 6/11. 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.
tor. 8/1310:05 am
MDW
- LAS
1 stop5h 10m
Southwest
lør. 8/156:35 am
LAS
- MDW
Nonstop3h 30m
Southwest
Deal found 6/11![Southwest logo]()
$267
This Alaska Airlines deal was found by Cheapflights users on 6/12. 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.
man. 7/278:20 pm
ORD
- LAS
1 stop16h 09m
Alaska Airlines
ons. 7/292:38 pm
LAS
- ORD
1 stop6h 58m
Alaska Airlines
Deal found 6/12![Alaska Airlines logo]()
$294
This United Airlines deal was found by Cheapflights users on 6/12. 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.
tor. 8/64:30 pm
ORD
- LAS
Nonstop4h 03m
United Airlines
lør. 8/154:08 pm
LAS
- ORD
Nonstop3h 52m
United Airlines
Deal found 6/12![United Airlines logo]()
$288
This Alaska Airlines deal was found by Cheapflights users on 6/12. 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.
man. 7/278:20 pm
ORD
- LAS
1 stop16h 09m
Alaska Airlines
fre. 8/76:50 am
LAS
- ORD
1 stop10h 07m
Alaska Airlines
Deal found 6/12![Alaska Airlines logo]()
$294
This Southwest deal was found by Cheapflights users on 6/11. 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.
tor. 9/37:00 am
MDW
- LAX
Nonstop4h 15m
Southwest
søn. 9/62:25 pm
LAX
- MDW
1 stop6h 50m
Southwest
Deal found 6/11![Southwest logo]()
$272
This Delta deal was found by Cheapflights users on 6/11. 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.
fre. 8/286:00 am
ORD
- LAX
1 stop7h 12m
Delta
tir. 9/112:37 pm
LAX
- ORD
1 stop7h 10m
Delta
Deal found 6/11![Delta logo]()
$253
This United Airlines deal was found by Cheapflights users on 6/12. 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.
ons. 8/1912:45 pm
ORD
- LAS
Nonstop3h 59m
United Airlines
søn. 8/2311:55 pm
LAS
- ORD
Nonstop3h 30m
United Airlines
Deal found 6/12![United Airlines logo]()
$293
This Southwest deal was found by Cheapflights users on 6/10. 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.
man. 8/177:00 am
MDW
- LAX
Nonstop4h 15m
Southwest
lør. 8/2210:30 am
LAX
- MDW
Nonstop3h 50m
Southwest
Deal found 6/10![Southwest logo]()
$274
This Alaska Airlines deal was found by Cheapflights users on 6/14. 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.
lør. 9/56:01 am
ORD
- SAN
Nonstop4h 31m
Alaska Airlines
lør. 9/127:03 am
SAN
- ORD
Nonstop4h 19m
Alaska Airlines
Deal found 6/14![Alaska Airlines logo]()
$307
This Delta deal was found by Cheapflights users on 6/11. 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.
tor. 8/137:29 am
ORD
- LAX
Nonstop4h 26m
Delta
fre. 8/219:50 am
LAX
- ORD
1 stop6h 29m
Delta
Deal found 6/11![Delta logo]()
$259
This United Airlines deal was found by Cheapflights users on 6/13. 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.
lør. 7/411:00 am
ORD
- LAS
Nonstop4h 05m
United Airlines
tir. 7/711:30 pm
LAS
- ORD
Nonstop3h 41m
United Airlines
Deal found 6/13![United Airlines logo]()
$293
This Alaska Airlines deal was found by Cheapflights users on 6/12. 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.
fre. 9/48:17 pm
ORD
- SAN
Nonstop4h 43m
Alaska Airlines
søn. 9/135:45 pm
SAN
- ORD
Nonstop4h 14m
Alaska Airlines
Deal found 6/12![Alaska Airlines logo]()
$307
This Southwest deal was found by Cheapflights users on 6/10. 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.
lør. 8/810:20 am
MDW
- LAS
Nonstop3h 45m
Southwest
tir. 8/118:00 am
LAS
- MDW
Nonstop3h 35m
Southwest
Deal found 6/10![Southwest logo]()
$292
This Delta deal was found by Cheapflights users on 6/11. 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.
fre. 8/1410:54 am
MDW
- LAX
1 stop8h 26m
Delta
man. 8/1711:59 pm
LAX
- MDW
1 stop6h 40m
Delta
Deal found 6/11![Delta logo]()
$269
This Alaska Airlines deal was found by Cheapflights users on 6/14. 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.
fre. 9/42:18 pm
ORD
- SAN
Nonstop4h 37m
Alaska Airlines
lør. 9/121:03 pm
SAN
- ORD
Nonstop4h 18m
Alaska Airlines
Deal found 6/14![Alaska Airlines logo]()
$307
This Southwest deal was found by Cheapflights users on 6/14. 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.
søn. 7/2610:25 pm
MDW
- LAS
Nonstop3h 55m
Southwest
tir. 7/285:50 am
LAS
- MDW
Nonstop3h 30m
Southwest
Deal found 6/14![Southwest logo]()
$293
This Delta deal was found by Cheapflights users on 6/11. 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.
fre. 8/75:56 pm
ORD
- LAX
1 stop8h 36m
Delta
man. 8/109:50 am
LAX
- ORD
1 stop6h 29m
Delta
Deal found 6/11![Delta logo]()
$269
Last-minute flights from Illinois to CaliforniaDiscover last-minute flight deals from Illinois to California. Data last updated juni 15, 2026 and is based on user searches.
Discover last-minute flight deals from Illinois to California. Data last updated juni 15, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 6/10. 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.
tir. 6/308:08 pm
STL
- LAS
1 stop17h 21m
Frontier
fre. 7/38:45 am
LAS
- STL
Nonstop3h 21m
Frontier
Deal found 6/10![Frontier logo]()
$205
This Expedia deal was found by Cheapflights users on 6/11. 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.
ons. 7/17:46 pm
STL
- LAS
Nonstop3h 34m
Multiple Airlines
ons. 7/811:30 am
LAS
- STL
1 stop10h 29m
Multiple Airlines
Deal found 6/11![Multiple Airlines logo]()
$200
This eDestinos deal was found by Cheapflights users on 6/15. 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.
lør. 7/49:13 pm
ORD
- LAX
Nonstop4h 36m
Frontier
tir. 7/2111:59 pm
LAX
- ORD
Nonstop4h 18m
Frontier
Deal found 6/15![Frontier logo]()
$205
This Frontier deal was found by Cheapflights users on 6/14. 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.
tir. 7/77:03 pm
STL
- LAS
Nonstop3h 33m
Frontier
fre. 7/1012:50 pm
LAS
- STL
Nonstop3h 25m
Frontier
Deal found 6/14![Frontier logo]()
$201
This Super.com deal was found by Cheapflights users on 6/10. 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.
lør. 7/119:13 pm
ORD
- LAX
Nonstop4h 44m
Frontier
søn. 7/1211:59 pm
LAX
- ORD
Nonstop4h 18m
Frontier
Deal found 6/10![Frontier logo]()
$199
This Super.com deal was found by Cheapflights users on 6/15. 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.
tir. 7/149:13 pm
ORD
- LAX
Nonstop4h 44m
Frontier
lør. 7/1811:59 pm
LAX
- ORD
Nonstop4h 18m
Frontier
Deal found 6/15![Frontier logo]()
$204
This Kiwi.com deal was found by Cheapflights users on 6/11. 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.
tor. 7/169:13 pm
ORD
- LAX
Nonstop4h 44m
Frontier
tir. 7/2811:59 pm
LAX
- ORD
Nonstop4h 18m
Frontier
Deal found 6/11![Frontier logo]()
$201
This Super.com deal was found by Cheapflights users on 6/11. 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.
tor. 7/169:13 pm
ORD
- LAX
Nonstop4h 44m
Frontier
fre. 7/2411:59 pm
LAX
- ORD
Nonstop4h 18m
Frontier
Deal found 6/11![Frontier logo]()
$203
This Cheapflightsfares deal was found by Cheapflights users on 6/11. 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.
fre. 7/177:10 pm
STL
- LAS
Nonstop3h 33m
Frontier
fre. 7/2412:50 pm
LAS
- STL
Nonstop3h 25m
Frontier
Deal found 6/11![Frontier logo]()
$202
This Expedia deal was found by Cheapflights users on 6/12. 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.
fre. 7/177:10 pm
STL
- LAS
Nonstop3h 33m
Frontier
man. 7/2012:50 pm
LAS
- STL
Nonstop3h 25m
Frontier
Deal found 6/12![Frontier logo]()
$204
This Frontier deal was found by Cheapflights users on 6/11. 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.
ons. 7/229:13 pm
ORD
- LAX
Nonstop4h 44m
Frontier
man. 7/2711:59 pm
LAX
- ORD
Nonstop4h 18m
Frontier
Deal found 6/11![Frontier logo]()
$200
This Frontier deal was found by Cheapflights users on 6/12. 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.
ons. 7/299:13 pm
ORD
- LAX
Nonstop4h 44m
Frontier
tir. 8/411:59 pm
LAX
- ORD
Nonstop4h 18m
Frontier
Deal found 6/12![Frontier logo]()
$206
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 juni 15, 2026.
Search for one-way flight options from Illinois to California. Find affordable one-way fares based on user searches. Data last updated juni 15, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/15. 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.
tor. 8/208:21 pm
STL
- LAS
Nonstop3h 38m
Frontier
Deal found 6/15![Frontier logo]()
$48
This Cheapflightsfares deal was found by Cheapflights users on 6/15. 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.
ons. 7/157:03 pm
STL
- LAS
Nonstop3h 33m
Frontier
Deal found 6/15![Frontier logo]()
$49
This Super.com deal was found by Cheapflights users on 6/13. 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.
fre. 7/107:10 pm
STL
- LAS
Nonstop3h 33m
Frontier
Deal found 6/13![Frontier logo]()
$54
This Cheapflightsfares deal was found by Cheapflights users on 6/10. 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.
tir. 8/117:03 pm
STL
- LAS
Nonstop3h 33m
Frontier
Deal found 6/10![Frontier logo]()
$55
This Frontier deal was found by Cheapflights users on 6/11. 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.
man. 7/67:10 pm
STL
- LAS
Nonstop3h 33m
Frontier
Deal found 6/11![Frontier logo]()
$57
This Southwest deal was found by Cheapflights users on 6/10. 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.
fre. 7/106:30 pm
STL
- LAS
1 stop5h 35m
Southwest
Deal found 6/10![Southwest logo]()
$95
This Southwest deal was found by Cheapflights users on 6/14. 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.
tir. 8/116:00 am
STL
- LAS
1 stop6h 35m
Southwest
Deal found 6/14![Southwest logo]()
$100
This Trip.com deal was found by Cheapflights users on 6/12. 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.
man. 8/109:57 pm
ORD
- ONT
1 stop27h 53m
Frontier
Deal found 6/12![Frontier logo]()
$101
This Frontier deal was found by Cheapflights users on 6/11. 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.
ons. 9/912:46 pm
STL
- LAS
Nonstop3h 43m
Frontier
Deal found 6/11![Frontier logo]()
$102
This Kiwi.com deal was found by Cheapflights users on 6/14. 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.
ons. 8/199:48 pm
ORD
- ONT
1 stop14h 17m
Frontier
Deal found 6/14![Frontier logo]()
$103
This Southwest deal was found by Cheapflights users on 6/12. 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.
søn. 8/98:25 am
STL
- LAS
2 stops6h 25m
Southwest
Deal found 6/12![Southwest logo]()
$105
This Kiwi.com deal was found by Cheapflights users on 6/11. 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.
man. 8/108:08 pm
STL
- LAS
1 stop16h 52m
Frontier
Deal found 6/11![Frontier logo]()
$107
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 juni 15, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $171 (Kiwi.com) |
One-way from | $48 (Kiwi.com) |
Popular in | June |
Cheapest in | September |
Average price | $395 |
Good round-trip deal | $294 or less |
Good one-way deal | $128 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 juni 15, 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
St. LouisLas Vegas
STL - LAS
STLLAS
Lambert-St Louis
søn. 8/2
8:20 pm-11:30 pm
1 stop5h 10m
Las Vegas Harry Reid Intl
tor. 8/6
11:25 am-8:10 pm
2 stops6h 45m
$204
St. LouisLas Vegas
STL - LAS
STLLAS
Lambert-St Louis
man. 7/13
7:55 pm-11:40 pm
1 stop5h 45m
Las Vegas Harry Reid Intl
man. 7/20
5:00 pm-12:41 am
1 stop5h 41m
$217
St. LouisLas Vegas
STL - LAS
STLLAS
Lambert-St Louis
tir. 8/4
3:50 pm-8:16 pm
1 stop6h 26m
Las Vegas Harry Reid Intl
tor. 8/6
5:02 pm-12:41 am
1 stop5h 39m
$217
ChicagoLos Angeles
ORD - LAX
ORDLAX
Chicago O'Hare Intl
fre. 8/14
8:50 am-11:23 am
Nonstop4h 33m
Los Angeles
ons. 8/19
5:30 am-11:46 am
Nonstop4h 16m
$229
ChicagoLos Angeles
ORD - LAX
ORDLAX
Chicago O'Hare Intl
tor. 8/13
5:56 pm-12:32 am
1 stop8h 36m
Los Angeles
ons. 8/19
12:37 pm-9:47 pm
1 stop7h 10m
$233
ChicagoLos Angeles
ORD - LAX
ORDLAX
Chicago O'Hare Intl
tir. 8/25
7:44 pm-11:45 pm
1 stop6h 01m
Los Angeles
lør. 8/29
12:07 pm-11:29 pm
1 stop9h 22m
$233
ChicagoLos Angeles
ORD - LAX
ORDLAX
Chicago O'Hare Intl
ons. 8/19
6:45 pm-11:53 pm
1 stop7h 08m
Los Angeles
lør. 8/22
6:00 am-4:17 pm
1 stop8h 17m
$233
ChicagoLos Angeles
MDW - LAX
MDWLAX
Chicago Midway
fre. 8/14
8:45 pm-11:05 pm
Nonstop4h 20m
Los Angeles
ons. 8/19
9:05 am-5:10 pm
1 stop6h 05m
$239
ChicagoLos Angeles
ORD - LAX
ORDLAX
Chicago O'Hare Intl
fre. 8/28
6:00 am-11:12 am
1 stop7h 12m
Los Angeles
tir. 9/1
12:37 pm-9:47 pm
1 stop7h 10m
$253
ChicagoLas Vegas
MDW - LAS
MDWLAS
Chicago Midway
man. 7/27
6:30 am-8:20 am
Nonstop3h 50m
Las Vegas Harry Reid Intl
ons. 8/5
3:20 pm-10:50 pm
1 stop5h 30m
$256
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.
STL-LAS
ORD-LAX
ORD-LAS
MDW-LAX
MDW-LAS
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
STL-LAS
ORD-LAX
ORD-LAS
MDW-LAX
What is the cheapest month to book a flight from Illinois to California?
Currently, September is the cheapest month in which you can book a flight from Illinois to California (average of $306). Flying from Illinois to California in June is currently the most expensive (average of $427). 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 juni 15, 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 18% on your trip compared to booking a flight at noon.
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 juni 15, 2026.
The most flights from USIL to USCA are scheduled on a Monday (135 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (103 on average).
How much does it cost to fly round-trip from Illinois to California?
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 45 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
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 June 13, 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.
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 juni 15, 2026.
See what other customers who have flown with Alaska Airlines,Southwest, andUnited 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.
Comfort
7.8
Crew
8.5
Overall
7.9
Boarding
8.1
Entertainment
7.0
Food
7.1
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Comfort
7.8
Crew
8.5
Overall
7.9
Boarding
8.1
Entertainment
7.0
Food
7.1
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Comfort
7.8
Crew
8.5
Overall
7.9
Boarding
8.1
Entertainment
7.0
Food
7.1
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Comfort
7.8
Crew
8.5
Overall
7.9
Boarding
8.1
Entertainment
7.0
Food
7.1
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Comfort
7.8
Crew
8.5
Overall
7.9
Boarding
8.1
Entertainment
7.0
Food
7.1
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Comfort
7.8
Crew
8.5
Overall
7.9
Boarding
8.1
Entertainment
7.0
Food
7.1
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
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 juni 15, 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 8 airlines flying from Illinois to California
Discover the top 8 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 juni 15, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$80 | Average$243 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$128 | Average$354 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$138 | Average$237 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$138 | Average$438 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$139 | Average$407 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$156 | Average$469 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$157 | Average$446 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$159 | Average$314 | FlexibilityNo cancel fee | On-time62% |