$78+ 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 4/5. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — LAX
Apr 14 — Apr 211
Round-trip
1 adult, Economy
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Find cheap flights from Illinois to California with Cheapflights
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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 March 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 March 15, 2026.
This Trip.com deal was found by Cheapflights users on 3/12. 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.
Sun 3/298:06 pm
STL
- LAS
Nonstop4h 02m
Frontier
Tue 3/3112:59 am
LAS
- STL
1 stop6h 49m
Frontier
Deal found 3/12![Frontier logo]()
$148
This Cheapflightsfares deal was found by Cheapflights users on 3/10. 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.
Sun 4/1910:07 pm
ORD
- LAS
Nonstop3h 52m
Spirit Airlines
Thu 4/2311:51 pm
LAS
- ORD
Nonstop3h 34m
Spirit Airlines
Deal found 3/10![Spirit Airlines logo]()
$150
This Cheapflightsfares deal was found by Cheapflights users on 3/14. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/133:21 pm
ORD
- LAS
1 stop9h 48m
Spirit Airlines
Wed 4/222:59 pm
LAS
- ORD
1 stop6h 28m
Spirit Airlines
Deal found 3/14![Spirit Airlines logo]()
$151
This Mytrip deal was found by Cheapflights users on 3/10. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/146:01 pm
ORD
- LAS
1 stop8h 34m
Spirit Airlines
Wed 4/2210:52 pm
LAS
- ORD
1 stop9h 31m
Spirit Airlines
Deal found 3/10![Spirit Airlines logo]()
$152
This Kiwi.com deal was found by Cheapflights users on 3/14. 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.
Tue 4/148:58 pm
ORD
- LAS
Nonstop4h 27m
Multiple Airlines
Wed 4/1511:51 pm
LAS
- ORD
Nonstop3h 34m
Multiple Airlines
Deal found 3/14![Multiple Airlines logo]()
$153
This Kiwi.com deal was found by Cheapflights users on 3/13. 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.
Sun 5/35:15 am
ORD
- LAS
1 stop6h 30m
Spirit Airlines
Sat 5/911:51 pm
LAS
- ORD
Nonstop3h 34m
Spirit Airlines
Deal found 3/13![Spirit Airlines logo]()
$154
This Super.com deal was found by Cheapflights users on 3/10. 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.
Sun 4/510:12 pm
STL
- LAS
Nonstop3h 42m
Frontier
Thu 4/163:35 pm
LAS
- STL
Nonstop3h 25m
Frontier
Deal found 3/10![Frontier logo]()
$154
This Cheapflightsfares deal was found by Cheapflights users on 3/14. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/89:18 pm
ORD
- LAS
Nonstop4h 18m
Frontier
Mon 5/113:49 pm
LAS
- ORD
1 stop12h 01m
Frontier
Deal found 3/14![Frontier logo]()
$155
This Cheapflightsfares deal was found by Cheapflights users on 3/10. 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.
Thu 4/2310:07 pm
ORD
- LAS
Nonstop3h 52m
Spirit Airlines
Sat 4/252:59 pm
LAS
- ORD
1 stop6h 28m
Spirit Airlines
Deal found 3/10![Spirit Airlines logo]()
$156
This Super.com deal was found by Cheapflights users on 3/13. 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.
Sun 4/510:12 pm
STL
- LAS
Nonstop3h 42m
Frontier
Fri 4/106:05 am
LAS
- STL
Nonstop3h 22m
Frontier
Deal found 3/13![Frontier logo]()
$156
This CheapOair deal was found by Cheapflights users on 3/14. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/1910:07 pm
ORD
- LAS
Nonstop3h 52m
Spirit Airlines
Tue 4/2110:52 pm
LAS
- ORD
1 stop9h 31m
Spirit Airlines
Deal found 3/14![Spirit Airlines logo]()
$157
This Cheapflightsfares deal was found by Cheapflights users on 3/10. 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.
Tue 5/129:18 pm
ORD
- LAS
Nonstop4h 18m
Frontier
Wed 5/1312:59 am
LAS
- ORD
Nonstop3h 48m
Frontier
Deal found 3/10![Frontier logo]()
$158
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 March 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 March 15, 2026.
This United Airlines deal was found by Cheapflights users on 3/12. 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.
Tue 4/288:20 pm
ORD
- SAN
Nonstop4h 39m
United Airlines
Sun 5/38:45 pm
SAN
- ORD
1 stop6h 21m
United Airlines
Deal found 3/12![United Airlines logo]()
$227
This Alaska Airlines deal was found by Cheapflights users on 3/12. 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.
Thu 4/237:59 pm
ORD
- SAN
Nonstop4h 43m
Alaska Airlines
Wed 4/2910:51 am
SAN
- ORD
1 stop11h 08m
Alaska Airlines
Deal found 3/12![Alaska Airlines logo]()
$227
This KAYAK deal was found by Cheapflights users on 3/12. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/710:10 am
MDW
- LAX
1 stop13h 55m
Southwest
Wed 4/85:15 am
LAX
- MDW
Nonstop4h 00m
Southwest
Deal found 3/12![Southwest logo]()
$242
This Delta deal was found by Cheapflights users on 3/12. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/91:44 pm
ORD
- LAS
1 stop6h 21m
Delta
Sat 5/910:10 pm
LAS
- ORD
1 stop8h 29m
Delta
Deal found 3/12![Delta logo]()
$277
This KAYAK deal was found by Cheapflights users on 3/12. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/79:13 pm
ORD
- LAX
Nonstop4h 37m
American Airlines
Tue 4/71:01 am
LAX
- ORD
Nonstop4h 17m
American Airlines
Deal found 3/12![American Airlines logo]()
$312
This United Airlines deal was found by Cheapflights users on 3/10. 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.
Tue 4/287:00 am
ORD
- LAX
Nonstop4h 40m
United Airlines
Sat 5/211:53 pm
LAX
- ORD
Nonstop4h 10m
United Airlines
Deal found 3/10![United Airlines logo]()
$237
This Southwest deal was found by Cheapflights users on 3/10. 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.
Thu 4/303:45 pm
ORD
- SAN
1 stop8h 30m
Southwest
Tue 5/511:30 am
SAN
- ORD
2 stops9h 25m
Southwest
Deal found 3/10![Southwest logo]()
$242
This Southwest deal was found by Cheapflights users on 3/13. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/34:15 pm
ORD
- SAN
2 stops9h 05m
Southwest
Wed 4/84:25 pm
SAN
- ORD
1 stop5h 30m
Southwest
Deal found 3/13![Southwest logo]()
$242
This Alaska Airlines deal was found by Cheapflights users on 3/10. 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.
Wed 4/14:13 pm
ORD
- SAN
Nonstop4h 45m
Alaska Airlines
Sun 4/125:38 pm
SAN
- ORD
Nonstop4h 21m
Alaska Airlines
Deal found 3/10![Alaska Airlines logo]()
$267
This Delta deal was found by Cheapflights users on 3/10. 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.
Wed 5/202:00 pm
ORD
- BUR
2 stops9h 45m
Delta
Tue 6/212:30 pm
BUR
- ORD
1 stop7h 20m
Delta
Deal found 3/10![Delta logo]()
$282
This United Airlines deal was found by Cheapflights users on 3/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/98:20 pm
ORD
- SAN
Nonstop4h 39m
United Airlines
Tue 4/217:40 pm
SAN
- ORD
1 stop7h 47m
United Airlines
Deal found 3/14![United Airlines logo]()
$263
This Southwest deal was found by Cheapflights users on 3/12. 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.
Wed 4/294:00 pm
MDW
- LAS
1 stop6h 00m
Southwest
Sat 5/25:45 am
LAS
- MDW
Nonstop3h 30m
Southwest
Deal found 3/12![Southwest logo]()
$243
This Alaska Airlines deal was found by Cheapflights users on 3/11. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/46:00 am
ORD
- SAN
1 stop9h 27m
Alaska Airlines
Wed 6/312:34 pm
SAN
- ORD
Nonstop4h 16m
Alaska Airlines
Deal found 3/11![Alaska Airlines logo]()
$277
This Delta deal was found by Cheapflights users on 3/10. 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.
Thu 6/47:59 pm
STL
- LAS
1 stop5h 44m
Delta
Mon 6/85:30 pm
LAS
- STL
1 stop5h 06m
Delta
Deal found 3/10![Delta logo]()
$293
This Southwest deal was found by Cheapflights users on 3/14. 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.
Sat 4/256:55 am
MDW
- LAX
1 stop7h 15m
Southwest
Sat 5/25:40 am
LAX
- MDW
Nonstop4h 00m
Southwest
Deal found 3/14![Southwest logo]()
$247
This United Airlines deal was found by Cheapflights users on 3/12. 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.
Thu 4/1610:45 pm
ORD
- SFO
Nonstop4h 50m
United Airlines
Sun 4/1911:52 pm
SFO
- ORD
Nonstop4h 28m
United Airlines
Deal found 3/12![United Airlines logo]()
$275
This Delta deal was found by Cheapflights users on 3/10. 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.
Mon 4/132:12 pm
MDW
- LAS
1 stop8h 05m
Delta
Wed 4/2211:01 pm
LAS
- MDW
1 stop7h 46m
Delta
Deal found 3/10![Delta logo]()
$295
This Southwest deal was found by Cheapflights users on 3/10. 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.
Fri 5/14:15 pm
ORD
- SAN
2 stops9h 10m
Southwest
Tue 5/511:30 am
SAN
- ORD
2 stops9h 25m
Southwest
Deal found 3/10![Southwest logo]()
$247
This United Airlines deal was found by Cheapflights users on 3/10. 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.
Wed 4/157:40 am
ORD
- BUR
1 stop8h 18m
United Airlines
Fri 4/173:30 pm
BUR
- ORD
1 stop7h 29m
United Airlines
Deal found 3/10![United Airlines logo]()
$277
This Delta deal was found by Cheapflights users on 3/10. 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.
Tue 6/95:20 pm
ORD
- SFO
1 stop8h 25m
Delta
Thu 7/97:00 am
SFO
- ORD
1 stop8h 30m
Delta
Deal found 3/10![Delta logo]()
$300
This Southwest deal was found by Cheapflights users on 3/12. 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.
Wed 4/1510:30 am
ORD
- SAN
2 stops9h 15m
Southwest
Sun 4/1910:40 pm
SAN
- ORD
1 stop12h 10m
Southwest
Deal found 3/12![Southwest logo]()
$248
This United Airlines deal was found by Cheapflights users on 3/12. 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.
Fri 4/106:25 am
ORD
- SFO
Nonstop4h 51m
United Airlines
Mon 4/137:00 pm
SFO
- ORD
Nonstop4h 28m
United Airlines
Deal found 3/12![United Airlines logo]()
$286
This Southwest deal was found by Cheapflights users on 3/12. 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.
Tue 4/216:10 am
MDW
- LAS
Nonstop3h 55m
Southwest
Sat 4/255:40 am
LAS
- MDW
2 stops7h 05m
Southwest
Deal found 3/12![Southwest logo]()
$252
This Alaska Airlines deal was found by Cheapflights users on 3/14. 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.
Wed 5/68:50 am
ORD
- LAX
2 stops12h 38m
Alaska Airlines
Sun 5/106:30 am
LAX
- ORD
1 stop8h 26m
Alaska Airlines
Deal found 3/14![Alaska Airlines logo]()
$369
This Delta deal was found by Cheapflights users on 3/10. 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.
Fri 4/107:10 pm
ORD
- SFO
1 stop6h 49m
Delta
Wed 4/1510:32 am
SFO
- ORD
2 stops8h 46m
Delta
Deal found 3/10![Delta logo]()
$309
This United Airlines deal was found by Cheapflights users on 3/10. 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.
Tue 4/284:05 pm
ORD
- SNA
Nonstop4h 41m
United Airlines
Sat 5/26:45 am
SNA
- ORD
Nonstop4h 16m
United Airlines
Deal found 3/10![United Airlines logo]()
$309
This Alaska Airlines deal was found by Cheapflights users on 3/12. 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.
Thu 4/168:00 am
ORD
- SNA
1 stop10h 29m
Alaska Airlines
Fri 4/247:50 pm
SNA
- ORD
1 stop8h 50m
Alaska Airlines
Deal found 3/12![Alaska Airlines logo]()
$375
This Southwest deal was found by Cheapflights users on 3/12. 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.
Sun 4/264:00 pm
MDW
- LAS
Nonstop3h 55m
Southwest
Tue 4/283:05 pm
LAS
- MDW
Nonstop3h 35m
Southwest
Deal found 3/12![Southwest logo]()
$257
This Delta deal was found by Cheapflights users on 3/14. 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.
Thu 4/166:00 pm
ORD
- SFO
1 stop7h 37m
Delta
Tue 4/2110:32 am
SFO
- ORD
2 stops8h 46m
Delta
Deal found 3/14![Delta logo]()
$339
This Alaska Airlines deal was found by Cheapflights users on 3/14. 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.
Tue 4/142:09 pm
ORD
- SNA
1 stop10h 15m
Alaska Airlines
Wed 4/1512:07 pm
SNA
- ORD
1 stop9h 52m
Alaska Airlines
Deal found 3/14![Alaska Airlines logo]()
$377
Last-minute flights from Illinois to CaliforniaDiscover last-minute flight deals from Illinois to California. Data last updated March 15, 2026 and is based on user searches.
Discover last-minute flight deals from Illinois to California. Data last updated March 15, 2026 and is based on user searches.
This Priceline deal was found by Cheapflights users on 3/10. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/63:21 pm
ORD
- LAS
1 stop9h 48m
Multiple Airlines
Tue 4/1412:20 am
LAS
- ORD
Nonstop3h 48m
Multiple Airlines
Deal found 3/10![Multiple Airlines logo]()
$159
This Kiwi.com deal was found by Cheapflights users on 3/10. 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.
Fri 4/104:36 pm
ORD
- LAS
1 stop9h 13m
Spirit Airlines
Fri 4/1711:51 pm
LAS
- ORD
Nonstop3h 34m
Spirit Airlines
Deal found 3/10![Spirit Airlines logo]()
$158
This Cheapflightsfares deal was found by Cheapflights users on 3/14. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/133:21 pm
ORD
- LAS
1 stop9h 48m
Spirit Airlines
Wed 4/222:59 pm
LAS
- ORD
1 stop6h 28m
Spirit Airlines
Deal found 3/14![Spirit Airlines logo]()
$151
This Frontier deal was found by Cheapflights users on 3/12. 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.
Mon 4/139:06 pm
ORD
- LAS
Nonstop4h 21m
Frontier
Fri 4/178:48 am
LAS
- ORD
1 stop6h 12m
Frontier
Deal found 3/12![Frontier logo]()
$155
This Mytrip deal was found by Cheapflights users on 3/10. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/146:01 pm
ORD
- LAS
1 stop8h 34m
Spirit Airlines
Wed 4/2210:52 pm
LAS
- ORD
1 stop9h 31m
Spirit Airlines
Deal found 3/10![Spirit Airlines logo]()
$152
This Kiwi.com deal was found by Cheapflights users on 3/14. 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.
Tue 4/148:58 pm
ORD
- LAS
Nonstop4h 27m
Multiple Airlines
Wed 4/1511:51 pm
LAS
- ORD
Nonstop3h 34m
Multiple Airlines
Deal found 3/14![Multiple Airlines logo]()
$153
This Cheapflightsfares deal was found by Cheapflights users on 3/10. 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.
Thu 4/165:20 am
ORD
- LAS
1 stop11h 05m
Frontier
Fri 4/1712:20 am
LAS
- ORD
Nonstop3h 48m
Frontier
Deal found 3/10![Frontier logo]()
$154
This Cheapflightsfares deal was found by Cheapflights users on 3/10. 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.
Sun 4/1910:07 pm
ORD
- LAS
Nonstop3h 52m
Spirit Airlines
Thu 4/2311:51 pm
LAS
- ORD
Nonstop3h 34m
Spirit Airlines
Deal found 3/10![Spirit Airlines logo]()
$150
This CheapOair deal was found by Cheapflights users on 3/14. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/1910:07 pm
ORD
- LAS
Nonstop3h 52m
Spirit Airlines
Tue 4/2110:52 pm
LAS
- ORD
1 stop9h 31m
Spirit Airlines
Deal found 3/14![Spirit Airlines logo]()
$157
This Priceline deal was found by Cheapflights users on 3/11. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/2110:45 am
ORD
- LAX
1 stop13h 00m
Multiple Airlines
Sat 4/255:22 pm
LAX
- ORD
Nonstop4h 05m
Multiple Airlines
Deal found 3/11![Multiple Airlines logo]()
$160
This Kiwi.com deal was found by Cheapflights users on 3/10. 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.
Wed 4/227:30 am
ORD
- LAS
1 stop7h 06m
Multiple Airlines
Tue 4/2812:20 am
LAS
- ORD
Nonstop3h 48m
Multiple Airlines
Deal found 3/10![Multiple Airlines logo]()
$160
This Cheapflightsfares deal was found by Cheapflights users on 3/10. 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.
Thu 4/2310:07 pm
ORD
- LAS
Nonstop3h 52m
Spirit Airlines
Sat 4/252:59 pm
LAS
- ORD
1 stop6h 28m
Spirit Airlines
Deal found 3/10![Spirit Airlines logo]()
$156
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 March 15, 2026.
Search for one-way flight options from Illinois to California. Find affordable one-way fares based on user searches. Data last updated March 15, 2026.
This Super.com deal was found by Cheapflights users on 3/13. 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.
Sun 4/510:12 pm
STL
- LAS
Nonstop3h 42m
Frontier
Deal found 3/13![Frontier logo]()
$78
This United Airlines deal was found by Cheapflights users on 3/11. 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.
Tue 4/282:15 pm
ORD
- SAN
1 stop8h 24m
United Airlines
Deal found 3/11![United Airlines logo]()
$79
This Kiwi.com deal was found by Cheapflights users on 3/10. 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.
Mon 3/3010:36 pm
MDW
- LAS
1 stop16h 16m
Frontier
Deal found 3/10![Frontier logo]()
$79
This Cheapflightsfares deal was found by Cheapflights users on 3/13. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/199:55 pm
STL
- LAS
Nonstop3h 42m
Frontier
Deal found 3/13![Frontier logo]()
$79
This Kiwi.com deal was found by Cheapflights users on 3/15. 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.
Tue 5/124:03 pm
ORD
- SAN
1 stop27h 56m
Multiple Airlines
Deal found 3/15![Multiple Airlines logo]()
$80
This Kiwi.com deal was found by Cheapflights users on 3/10. 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.
Mon 4/207:35 am
ORD
- LAS
1 stop12h 46m
Frontier
Deal found 3/10![Frontier logo]()
$80
This Kiwi.com deal was found by Cheapflights users on 3/10. 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.
Sat 4/115:53 pm
ORD
- SAN
1 stop8h 09m
Frontier
Deal found 3/10![Frontier logo]()
$81
This Super.com deal was found by Cheapflights users on 3/10. 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.
Sat 4/48:00 am
ORD
- LAS
Nonstop4h 19m
Frontier
Deal found 3/10![Frontier logo]()
$81
This Kiwi.com deal was found by Cheapflights users on 3/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/46:20 am
MDW
- LAX
1 stop17h 44m
Frontier
Deal found 3/12![Frontier logo]()
$82
This Kiwi.com deal was found by Cheapflights users on 3/10. 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.
Mon 4/136:40 am
ORD
- LAX
1 stop17h 11m
Frontier
Deal found 3/10![Frontier logo]()
$82
This Kiwi.com deal was found by Cheapflights users on 3/13. 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.
Sat 5/28:55 am
ORD
- LAS
1 stop12h 50m
Frontier
Deal found 3/13![Frontier logo]()
$82
This Kiwi.com deal was found by Cheapflights users on 3/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/197:50 am
ORD
- LAS
1 stop25h 48m
Frontier
Deal found 3/12![Frontier logo]()
$83
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 March 15, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $148 (Trip.com) |
One-way from | $78 (Super.com) |
Popular in | December |
Cheapest in | September |
Average price | $354 |
Good round-trip deal | $256 or less |
Good one-way deal | $125 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 March 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
ChicagoSan Diego
ORD - SAN
ORDSAN
Chicago O'Hare Intl
Tue 4/28
8:20 pm-10:59 pm
Nonstop4h 39m
San Diego
Sun 5/3
8:45 pm-5:06 am
1 stop6h 21m
$227
ChicagoSan Diego
ORD - SAN
ORDSAN
Chicago O'Hare Intl
Thu 4/23
7:59 pm-10:42 pm
Nonstop4h 43m
San Diego
Wed 4/29
10:51 am-11:59 pm
1 stop11h 08m
$227
ChicagoLos Angeles
ORD - LAX
ORDLAX
Chicago O'Hare Intl
Tue 4/28
7:00 am-9:40 am
Nonstop4h 40m
Los Angeles Los Angeles
Sat 5/2
11:53 pm-6:03 am
Nonstop4h 10m
$237
ChicagoLos Angeles
MDW - LAX
MDWLAX
Chicago Midway
Tue 4/7
10:10 am-10:05 pm
1 stop13h 55m
Los Angeles Los Angeles
Wed 4/8
5:15 am-11:15 am
Nonstop4h 00m
$242
ChicagoSan Diego
ORD - SAN
ORDSAN
Chicago O'Hare Intl
Thu 4/30
3:45 pm-10:15 pm
1 stop8h 30m
San Diego
Tue 5/5
11:30 am-10:55 pm
2 stops9h 25m
$242
ChicagoSan Diego
ORD - SAN
ORDSAN
Chicago O'Hare Intl
Fri 4/3
4:15 pm-11:20 pm
2 stops9h 05m
San Diego
Wed 4/8
4:25 pm-11:55 pm
1 stop5h 30m
$242
ChicagoLas Vegas
MDW - LAS
MDWLAS
Chicago Midway
Wed 4/29
4:00 pm-8:00 pm
1 stop6h 00m
Las Vegas Harry Reid Intl
Sat 5/2
5:45 am-11:15 am
Nonstop3h 30m
$243
ChicagoLos Angeles
MDW - LAX
MDWLAX
Chicago Midway
Sat 4/25
6:55 am-12:10 pm
1 stop7h 15m
Los Angeles Los Angeles
Sat 5/2
5:40 am-11:40 am
Nonstop4h 00m
$247
ChicagoSan Diego
ORD - SAN
ORDSAN
Chicago O'Hare Intl
Fri 5/1
4:15 pm-11:25 pm
2 stops9h 10m
San Diego
Tue 5/5
11:30 am-10:55 pm
2 stops9h 25m
$247
ChicagoSan Diego
ORD - SAN
ORDSAN
Chicago O'Hare Intl
Wed 4/15
10:30 am-5:45 pm
2 stops9h 15m
San Diego
Sun 4/19
10:40 pm-12:50 pm
1 stop12h 10m
$248
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-SAN
ORD-LAX
ORD-SFO
ORD-LAS
ORD-BUR
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-SAN
ORD-LAX
ORD-SFO
ORD-LAS
What is the cheapest month to book a flight from Illinois to California?
Currently, April is the cheapest month in which you can book a flight from Illinois to California (average of $67). Flying from Illinois to California in March is currently the most expensive (average of $166). 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 March 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 21% 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 March 12, 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 March 15, 2026.
The most flights from USIL to USCA are scheduled on a Friday (105 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (80 on average).
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 March 15, 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
Boarding
8.1
Entertainment
7.5
Comfort
8.0
Overall
8.0
Food
7.0
Reviews
1 / 20
8.0
ExcellentWalter,Aug 2025
OAK - SAN
Crew
8.6
Boarding
8.1
Entertainment
7.5
Comfort
8.0
Overall
8.0
Food
7.0
Reviews
1 / 20
8.0
ExcellentWalter,Aug 2025
OAK - SAN
Crew
8.6
Boarding
8.1
Entertainment
7.5
Comfort
8.0
Overall
8.0
Food
7.0
Reviews
1 / 20
8.0
ExcellentWalter,Aug 2025
OAK - SAN
Crew
8.6
Boarding
8.1
Entertainment
7.5
Comfort
8.0
Overall
8.0
Food
7.0
Reviews
1 / 20
8.0
ExcellentWalter,Aug 2025
OAK - SAN
Crew
8.6
Boarding
8.1
Entertainment
7.5
Comfort
8.0
Overall
8.0
Food
7.0
Reviews
1 / 20
8.0
ExcellentWalter,Aug 2025
OAK - SAN
Crew
8.6
Boarding
8.1
Entertainment
7.5
Comfort
8.0
Overall
8.0
Food
7.0
Reviews
1 / 20
8.0
ExcellentWalter,Aug 2025
OAK - 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 March 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 10 airlines flying from Illinois to California
Discover the top 10 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 March 15, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$69 | Average$198 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$80 | Average$236 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$108 | Average$228 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$112 | Average$374 | FlexibilityNo cancel fee | On-time83% | |
| Cheapest$128 | Average$334 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$138 | Average$438 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$139 | Average$380 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$147 | Average$315 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$156 | Average$454 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$157 | Average$433 | FlexibilityNo cancel fee | On-time69% |