$108+ Cheap flights from Illinois to California
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/14. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — LAX
Nov 26 — Dec 31
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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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Illinois to California
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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 October 27, 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 October 27, 2026.
This CheapOair deal was found by Cheapflights users on 10/27. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/57:25 am -
1 stop16h 52m
Sat 12/1211:30 am -
1 stop11h 24m
Deal found 10/27![Frontier logo]()
$139
This CheapOair deal was found by Cheapflights users on 10/26. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/176:30 am -
1 stop6h 05m
Wed 12/211:30 am -
1 stop11h 23m
Deal found 10/26![Frontier logo]()
$140
This Kiwi.com deal was found by Cheapflights users on 10/25. 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 12/57:25 am -
1 stop16h 52m
Wed 12/911:30 am -
1 stop11h 24m
Deal found 10/25![Frontier logo]()
$142
This Kiwi.com deal was found by Cheapflights users on 10/24. 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 12/57:25 am -
1 stop16h 52m
Fri 12/1111:30 am -
1 stop11h 24m
Deal found 10/24![Frontier logo]()
$143
This Kiwi.com deal was found by Cheapflights users on 10/24. 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 12/87:25 am -
1 stop16h 52m
Sat 12/1211:30 am -
1 stop11h 24m
Deal found 10/24![Frontier logo]()
$149
This Kiwi.com deal was found by Cheapflights users on 10/24. 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 12/56:21 am -
1 stop7h 30m
Mon 12/146:00 am -
1 stop16h 54m
Deal found 10/24![Frontier logo]()
$153
This CheapOair deal was found by Cheapflights users on 10/26. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/176:30 am -
1 stop6h 05m
Thu 11/2611:40 am -
1 stop11h 13m
Deal found 10/26![Frontier logo]()
$155
This Kiwi.com deal was found by Cheapflights users on 10/24. 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 12/96:21 am -
1 stop7h 30m
Wed 12/92:53 pm -
1 stop12h 08m
Deal found 10/24![Frontier logo]()
$157
This Kiwi.com deal was found by Cheapflights users on 10/24. 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 12/96:21 am -
1 stop7h 30m
Sat 12/1211:30 am -
1 stop11h 24m
Deal found 10/24![Frontier logo]()
$158
This Mytrip deal was found by Cheapflights users on 10/24. 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.
Wed 12/26:21 am -
1 stop8h 18m
Fri 12/411:30 am -
1 stop11h 23m
Deal found 10/24![Frontier logo]()
$159
This CheapOair deal was found by Cheapflights users on 10/26. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/186:30 am -
1 stop6h 05m
Sat 11/216:08 pm -
1 stop11h 39m
Deal found 10/26![Frontier logo]()
$160
This Kiwi.com deal was found by Cheapflights users on 10/24. 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 12/86:21 am -
1 stop7h 30m
Mon 12/146:00 am -
1 stop16h 54m
Deal found 10/24![Frontier logo]()
$161
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 October 27, 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 October 27, 2026.
This Delta deal was found by Cheapflights users on 10/22. 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 1/237:35 am -
Nonstop4h 40m
Sat 1/3011:35 am -
1 stop10h 11m
Deal found 10/22![Delta logo]()
$245
This Southwest deal was found by Cheapflights users on 10/22. 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.
Mon 12/79:15 pm -
Nonstop4h 40m
Mon 12/147:45 pm -
1 stop7h 55m
Deal found 10/22![Southwest logo]()
$253
This United Airlines deal was found by Cheapflights users on 10/23. 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 12/233:35 pm -
1 stop6h 42m
Tue 12/296:50 am -
Nonstop4h 18m
Deal found 10/23![United Airlines logo]()
$276
This Alaska Airlines deal was found by Cheapflights users on 10/24. 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 12/37:58 pm -
Nonstop4h 51m
Sun 12/66:15 am -
1 stop8h 16m
Deal found 10/24![Alaska Airlines logo]()
$307
This Delta deal was found by Cheapflights users on 10/23. 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 12/59:30 am -
Nonstop4h 33m
Sat 12/129:40 pm -
1 stop9h 09m
Deal found 10/23![Delta logo]()
$245
This United Airlines deal was found by Cheapflights users on 10/22. 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 11/131:00 pm -
Nonstop4h 29m
Mon 11/166:47 pm -
Nonstop4h 12m
Deal found 10/22![United Airlines logo]()
$278
This Delta deal was found by Cheapflights users on 10/22. 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 12/107:45 am -
Nonstop4h 40m
Mon 12/149:40 pm -
1 stop9h 46m
Deal found 10/22![Delta logo]()
$253
This Southwest deal was found by Cheapflights users on 10/24. 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.
Mon 12/215:10 am -
Nonstop4h 30m
Sat 1/95:20 am -
2 stops7h 20m
Deal found 10/24![Southwest logo]()
$302
This United Airlines deal was found by Cheapflights users on 10/22. 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 11/206:00 am -
Nonstop4h 44m
Wed 12/23:00 pm -
Nonstop4h 15m
Deal found 10/22![United Airlines logo]()
$278
This Alaska Airlines deal was found by Cheapflights users on 10/27. 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 12/197:58 pm -
1 stop14h 54m
Tue 12/294:02 pm -
2 stops11h 38m
Deal found 10/27![Alaska Airlines logo]()
$315
This Southwest deal was found by Cheapflights users on 10/22. 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.
Mon 1/253:50 pm -
Nonstop4h 30m
Tue 1/266:45 am -
Nonstop3h 50m
Deal found 10/22![Southwest logo]()
$304
This Delta deal was found by Cheapflights users on 10/22. 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 1/209:50 am -
2 stops14h 24m
Sun 1/2412:00 pm -
1 stop7h 10m
Deal found 10/22![Delta logo]()
$277
This Alaska Airlines deal was found by Cheapflights users on 10/22. 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 1/147:40 am -
2 stops11h 54m
Tue 1/191:53 pm -
1 stop8h 06m
Deal found 10/22![Alaska Airlines logo]()
$317
This United Airlines deal was found by Cheapflights users on 10/22. 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 11/197:35 am -
Nonstop4h 53m
Sun 11/226:42 pm -
Nonstop4h 17m
Deal found 10/22![United Airlines logo]()
$296
This Delta deal was found by Cheapflights users on 10/22. 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 1/256:30 pm -
Nonstop4h 47m
Fri 1/297:45 am -
Nonstop4h 02m
Deal found 10/22![Delta logo]()
$278
This Alaska Airlines deal was found by Cheapflights users on 10/23. 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 12/112:08 pm -
1 stop10h 25m
Tue 12/1512:42 pm -
Nonstop4h 18m
Deal found 10/23![Alaska Airlines logo]()
$323
This United Airlines deal was found by Cheapflights users on 10/22. 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 1/141:30 pm -
Nonstop5h 01m
Sun 1/174:52 pm -
Nonstop4h 23m
Deal found 10/22![United Airlines logo]()
$296
This Southwest deal was found by Cheapflights users on 10/22. 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 12/139:30 pm -
Nonstop4h 25m
Wed 12/3011:55 pm -
Nonstop4h 00m
Deal found 10/22![Southwest logo]()
$327
This Delta deal was found by Cheapflights users on 10/25. 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 12/176:10 pm -
Nonstop4h 39m
Sat 12/267:55 am -
Nonstop4h 05m
Deal found 10/25![Delta logo]()
$287
This Alaska Airlines deal was found by Cheapflights users on 10/22. 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 11/126:35 pm -
1 stop17h 38m
Mon 11/165:35 pm -
Nonstop4h 14m
Deal found 10/22![Alaska Airlines logo]()
$323
This United Airlines deal was found by Cheapflights users on 10/27. 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.
Sun 1/1712:40 pm -
Nonstop4h 38m
Mon 1/184:01 pm -
1 stop7h 13m
Deal found 10/27![United Airlines logo]()
$308
This Delta deal was found by Cheapflights users on 10/27. 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.
Sun 12/207:59 am -
1 stop9h 20m
Sun 1/103:22 pm -
1 stop6h 05m
Deal found 10/27![Delta logo]()
$288
This Alaska Airlines deal was found by Cheapflights users on 10/23. 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 12/119:00 am -
1 stop10h 45m
Wed 12/1612:42 pm -
Nonstop4h 18m
Deal found 10/23![Alaska Airlines logo]()
$323
This Southwest deal was found by Cheapflights users on 10/23. 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 11/256:30 pm -
1 stop6h 10m
Mon 11/3011:55 pm -
Nonstop4h 00m
Deal found 10/23![Southwest logo]()
$357
This United Airlines deal was found by Cheapflights users on 10/27. 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.
Fri 12/111:57 pm -
Nonstop4h 53m
Sun 12/133:00 pm -
Nonstop4h 15m
Deal found 10/27![United Airlines logo]()
$310
This Alaska Airlines deal was found by Cheapflights users on 10/25. 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.
Sun 12/67:58 pm -
1 stop24h 29m
Sat 12/127:04 pm -
1 stop16h 11m
Deal found 10/25![Alaska Airlines logo]()
$323
This Delta deal was found by Cheapflights users on 10/24. 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 12/197:12 pm -
1 stop6h 34m
Sun 1/107:58 am -
Nonstop4h 03m
Deal found 10/24![Delta logo]()
$297
This Southwest deal was found by Cheapflights users on 10/24. 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 12/177:25 am -
Nonstop4h 30m
Sat 12/2611:55 pm -
Nonstop4h 00m
Deal found 10/24![Southwest logo]()
$382
This Delta deal was found by Cheapflights users on 10/27. 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 11/107:17 pm -
1 stop6h 36m
Thu 11/126:25 am -
1 stop8h 16m
Deal found 10/27![Delta logo]()
$297
This Alaska Airlines deal was found by Cheapflights users on 10/25. 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 11/47:20 am -
Nonstop4h 43m
Mon 11/95:35 pm -
Nonstop4h 14m
Deal found 10/25![Alaska Airlines logo]()
$327
Last-minute flights from Illinois to CaliforniaDiscover last-minute flight deals from Illinois to California. Data last updated October 27, 2026 and is based on user searches.
Discover last-minute flight deals from Illinois to California. Data last updated October 27, 2026 and is based on user searches.
This Mytrip deal was found by Cheapflights users on 10/24. 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 11/106:30 am -
1 stop6h 05m
Wed 11/186:30 am -
1 stop15h 51m
Deal found 10/24![Frontier logo]()
$177
This Frontier deal was found by Cheapflights users on 10/22. 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.
Tue 11/106:30 am -
1 stop6h 05m
Thu 11/122:23 pm -
1 stop12h 50m
Deal found 10/22![Frontier logo]()
$182
This CheapOair deal was found by Cheapflights users on 10/22. 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.
Mon 11/165:15 pm -
1 stop18h 25m
Wed 11/186:30 am -
1 stop15h 51m
Deal found 10/22![Frontier logo]()
$172
This CheapOair deal was found by Cheapflights users on 10/26. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/165:15 pm -
1 stop18h 25m
Mon 11/238:15 am -
1 stop18h 55m
Deal found 10/26![Frontier logo]()
$178
This CheapOair deal was found by Cheapflights users on 10/26. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/176:30 am -
1 stop6h 05m
Wed 12/211:30 am -
1 stop11h 23m
Deal found 10/26![Frontier logo]()
$140
This CheapOair deal was found by Cheapflights users on 10/26. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/176:30 am -
1 stop6h 05m
Thu 11/2611:40 am -
1 stop11h 13m
Deal found 10/26![Frontier logo]()
$155
This Frontier deal was found by Cheapflights users on 10/22. 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.
Tue 11/176:08 am -
1 stop13h 45m
Mon 11/235:57 pm -
1 stop12h 17m
Deal found 10/22![Frontier logo]()
$200
This CheapOair deal was found by Cheapflights users on 10/26. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/186:30 am -
1 stop6h 05m
Sat 11/216:08 pm -
1 stop11h 39m
Deal found 10/26![Frontier logo]()
$160
This CheapOair deal was found by Cheapflights users on 10/26. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/186:30 am -
1 stop6h 05m
Tue 12/16:00 am -
1 stop16h 53m
Deal found 10/26![Frontier logo]()
$166
This CheapOair deal was found by Cheapflights users on 10/24. 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 11/186:30 am -
1 stop6h 05m
Thu 12/38:00 am -
1 stop18h 59m
Deal found 10/24![Frontier logo]()
$175
This Kiwi.com deal was found by Cheapflights users on 10/24. 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 11/196:30 am -
1 stop9h 59m
Mon 11/237:41 pm -
1 stop7h 29m
Deal found 10/24![Frontier logo]()
$199
This Trip.com deal was found by Cheapflights users on 10/23. 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.
Mon 11/235:15 am -
1 stop29h 15m
Tue 12/18:00 am -
1 stop18h 59m
Deal found 10/23![Frontier logo]()
$168
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 October 27, 2026.
Search for one-way flight options from Illinois to California. Find affordable one-way fares based on user searches. Data last updated October 27, 2026.
This Frontier deal was found by Cheapflights users on 10/22. 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 11/166:08 am -
1 stop13h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/22![Frontier logo]()
$108
This Cheapflightsfares deal was found by Cheapflights users on 10/23. 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 12/215:40 am -
Nonstop4h 44m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/23![Frontier logo]()
$108
This Delta deal was found by Cheapflights users on 10/23. 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 11/251:31 pm -
1 stop7h 27m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/23![Delta logo]()
$109
This Super.com deal was found by Cheapflights users on 10/27. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/2410:00 pm -
Nonstop4h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/27![Frontier logo]()
$109
This iWofly deal was found by Cheapflights users on 10/27. 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 iWofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/2110:00 pm -
Nonstop4h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/27![Frontier logo]()
$110
This Kiwi.com deal was found by Cheapflights users on 10/22. 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 12/1410:40 am -
2 stops22h 39m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/22![Frontier logo]()
$111
This Super.com deal was found by Cheapflights users on 10/22. 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.
Thu 11/125:15 pm -
1 stop16h 33m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/22![Frontier logo]()
$112
This Mytrip deal was found by Cheapflights users on 10/25. 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.
Mon 11/2312:05 pm -
2 stops21h 43m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/25![Frontier logo]()
$113
This Mytrip deal was found by Cheapflights users on 10/23. 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.
Sat 11/146:30 am -
2 stops11h 51m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/23![Frontier logo]()
$114
This iWofly deal was found by Cheapflights users on 10/27. 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 iWofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/206:40 am -
1 stop19h 17m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/27![Frontier logo]()
$114
This Kiwi.com deal was found by Cheapflights users on 10/22. 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 12/410:41 am -
1 stop9h 54m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/22![Frontier logo]()
$115
This Mytrip deal was found by Cheapflights users on 10/24. 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.
Mon 11/2312:05 pm -
2 stops22h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/24![Frontier logo]()
$115
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 October 27, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $139 (CheapOair) |
One-way from | $108 (Frontier) |
Popular in | June |
Cheapest in | October |
Average price | $288 |
Good round-trip deal | $270 or less |
Good one-way deal | $148 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 7,457,451 searches. Data last updated October 27, 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 Chicago O'Hare Intl - LAX Los Angeles
ORDLAX
Chicago O'Hare Intl
Thu 1/14
7:35 am-10:15 am
Nonstop4h 40m
Los Angeles
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$108
ChicagoLos Angeles
ORD Chicago O'Hare Intl - LAX Los Angeles
ORDLAX
Chicago O'Hare Intl
Wed 11/18
8:11 pm-10:55 pm
Nonstop4h 44m
Los Angeles
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$118
ChicagoOntario
ORD Chicago O'Hare Intl - ONT Ontario
ORDONT
Chicago O'Hare Intl
Sat 1/16
4:10 pm-6:50 pm
Nonstop4h 40m
Ontario
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$120
Quickest round-trip
ChicagoLos Angeles
MDW Chicago Midway - LAX Los Angeles
MDWLAX
Chicago Midway
Thu 12/17
7:25 am-9:55 am
Nonstop4h 30m
Los Angeles
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$122
ChicagoLos Angeles
ORD Chicago O'Hare Intl - LAX Los Angeles
ORDLAX
Chicago O'Hare Intl
Thu 12/3
2:59 pm-11:06 pm
1 stop10h 07m
Los Angeles
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$122
ChicagoLos Angeles
ORD Chicago O'Hare Intl - LAX Los Angeles
ORDLAX
Chicago O'Hare Intl
Thu 1/21
7:35 am-10:15 am
Nonstop4h 40m
Los Angeles
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$122
ChicagoLos Angeles
ORD Chicago O'Hare Intl - LAX Los Angeles
ORDLAX
Chicago O'Hare Intl
Thu 12/17
10:25 am-1:14 pm
Nonstop4h 49m
Los Angeles
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$122
ChicagoFresno
ORD Chicago O'Hare Intl - FAT Fresno Airterminal
ORDFAT
Chicago O'Hare Intl
Mon 11/23
5:15 am-7:46 am
1 stop28h 31m
Fresno Airterminal
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$124
ChicagoOntario
ORD Chicago O'Hare Intl - ONT Ontario
ORDONT
Chicago O'Hare Intl
Wed 11/18
2:03 pm-11:00 pm
2 stops10h 57m
Ontario
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$124
ChicagoLos Angeles
MDW Chicago Midway - LAX Los Angeles
MDWLAX
Chicago Midway
Sat 1/9
6:00 am-11:53 am
1 stop7h 53m
Los Angeles
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$129
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-FAT
ORD-SAN
ORD-SFO
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-FAT
ORD-SAN
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 $353). Flying from Illinois to California in June is currently the most expensive (average of $432). 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 October 27, 2026.
A simple way to save on the total cost of your ticket is to fly from Illinois to California in the morning. If you’re flexible enough to do this you can expect to save up to 13% 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 October 27, 2026.
The most flights from USIL to USCA are scheduled on a Sunday (129 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (73 on average).
How much does it cost to fly round-trip from Illinois to California?
Airfare is below average for this route at the moment.
Illinois to California flights typically cost between $220 and $427 in December.The cheapest round-trip price found within the last 5 days was $199 on Frontier (Dec 9-Dec 16).
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 49 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 October 24, 2026.
Travelers seeking maximum savings on their Illinois to California flight should consider departing on Sunday mornings 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 October 27, 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
Food
7.0
Entertainment
7.0
Boarding
8.1
Crew
8.5
Overall
7.9
Reviews
1 / 20
2.0
MediocreChris,Aug 2026
GEG - SFO
Comfort
7.8
Food
7.0
Entertainment
7.0
Boarding
8.1
Crew
8.5
Overall
7.9
Reviews
1 / 20
2.0
MediocreChris,Aug 2026
GEG - SFO
Comfort
7.8
Food
7.0
Entertainment
7.0
Boarding
8.1
Crew
8.5
Overall
7.9
Reviews
1 / 20
2.0
MediocreChris,Aug 2026
GEG - SFO
Comfort
7.8
Food
7.0
Entertainment
7.0
Boarding
8.1
Crew
8.5
Overall
7.9
Reviews
1 / 20
2.0
MediocreChris,Aug 2026
GEG - SFO
Comfort
7.8
Food
7.0
Entertainment
7.0
Boarding
8.1
Crew
8.5
Overall
7.9
Reviews
1 / 20
2.0
MediocreChris,Aug 2026
GEG - SFO
Comfort
7.8
Food
7.0
Entertainment
7.0
Boarding
8.1
Crew
8.5
Overall
7.9
Reviews
1 / 20
2.0
MediocreChris,Aug 2026
GEG - SFO
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
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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 October 27, 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 7,457,451 searches. Data last updated October 27, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$102 | Average$293 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$118 | Average$333 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$153 | Average$307 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$157 | Average$367 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$162 | Average$328 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$164 | Average$447 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$166 | Average$500 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$187 | Average$448 | FlexibilityNo cancel fee | On-time63% |