$72+ Cheap flights from California to Illinois
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 11/17. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — ORD
Nov 29 — Dec 61
Round-trip
1 adult, Economy
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Find cheap flights from California to Illinois with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Cheapest flights from California to IllinoisExplore the most affordable flight options available from California to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 30, 2026.
Explore the most affordable flight options available from California to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 30, 2026.
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.
Mon 11/237:41 pm -
1 stop7h 29m
Tue 12/19:13 am -
2 stops13h 08m
Deal found 10/25![Frontier logo]()
$212
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/2111:59 pm -
Nonstop4h 15m
Mon 11/2310:00 pm -
Nonstop4h 40m
Deal found 10/25![Frontier logo]()
$213
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.
Wed 11/182:03 pm -
1 stop8h 18m
Wed 12/27:00 am -
1 stop10h 30m
Deal found 10/25![Frontier logo]()
$214
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.
Tue 12/17:41 pm -
2 stops18h 29m
Fri 12/47:00 am -
1 stop10h 30m
Deal found 10/25![Frontier logo]()
$215
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/1812:44 am -
Nonstop4h 18m
Fri 12/255:40 am -
Nonstop4h 44m
Deal found 10/25![Frontier logo]()
$216
This Mytrip deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/196:15 am -
2 stops11h 00m
Mon 11/2312:05 pm -
1 stop7h 04m
Deal found 10/28![Frontier logo]()
$217
This Cheapflightsfares deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/219:00 pm -
1 stop12h 00m
Tue 11/245:15 am -
1 stop12h 22m
Deal found 10/28![Frontier logo]()
$218
This Super.com deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/1812:44 am -
Nonstop4h 18m
Thu 12/315:40 am -
Nonstop4h 44m
Deal found 10/28![Frontier logo]()
$219
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/219:00 pm -
1 stop12h 00m
Thu 11/266:40 am -
1 stop19h 17m
Deal found 10/27![Frontier logo]()
$220
This Cheapflightsfares deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/2012:44 am -
Nonstop4h 18m
Mon 1/117:30 am -
1 stop26h 09m
Deal found 10/30![Frontier logo]()
$221
This Cheapflightsfares deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/2011:59 pm -
Nonstop4h 15m
Wed 11/255:15 am -
1 stop12h 22m
Deal found 10/28![Frontier logo]()
$222
This Kiwi.com deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/1612:44 am -
Nonstop4h 18m
Sat 1/25:40 am -
Nonstop4h 44m
Deal found 10/29![Frontier logo]()
$223
Best flights from California to IllinoisDiscover carefully curated flight deals from California to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 30, 2026.
Discover carefully curated flight deals from California to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 30, 2026.
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.
Sat 12/267:55 am -
Nonstop4h 05m
Tue 1/57:25 am -
Nonstop4h 48m
Deal found 10/25![Delta logo]()
$237
This Southwest deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/210:10 am -
1 stop7h 45m
Sat 12/56:25 pm -
Nonstop4h 35m
Deal found 10/29![Southwest logo]()
$247
This Alaska Airlines deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/101:24 pm -
1 stop8h 35m
Mon 12/147:58 pm -
Nonstop4h 51m
Deal found 10/29![Alaska Airlines logo]()
$276
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/114:35 pm -
Nonstop4h 12m
Thu 11/123:47 pm -
1 stop6h 37m
Deal found 10/26![United Airlines logo]()
$287
This Sun Country Air deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Sun Country Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/216:36 pm -
1 stop14h 05m
Fri 11/2711:00 am -
1 stop7h 46m
Deal found 10/29![Sun Country Air logo]()
$325
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.
Sat 2/139:50 pm -
1 stop10h 02m
Tue 2/161:00 pm -
1 stop9h 31m
Deal found 10/25![Delta logo]()
$257
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.
Wed 1/1311:04 am -
1 stop10h 55m
Sat 1/167:40 am -
Nonstop4h 39m
Deal found 10/27![Alaska Airlines logo]()
$277
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.
Wed 1/208:04 am -
1 stop6h 49m
Wed 1/279:56 am -
1 stop9h 03m
Deal found 10/25![Delta logo]()
$257
This United Airlines deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/3112:30 am -
Nonstop3h 57m
Tue 1/57:00 am -
Nonstop4h 44m
Deal found 10/29![United Airlines logo]()
$287
This Southwest deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/235:10 pm -
Nonstop3h 55m
Wed 12/23:10 pm -
1 stop8h 35m
Deal found 10/28![Southwest logo]()
$307
This Alaska Airlines deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/112:30 pm -
1 stop9h 29m
Sat 12/57:27 am -
2 stops12h 45m
Deal found 10/29![Alaska Airlines logo]()
$287
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 1/51:20 pm -
1 stop6h 48m
Mon 1/1112:42 pm -
2 stops11h 53m
Deal found 10/26![Delta logo]()
$264
This United Airlines deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/2611:17 pm -
Nonstop4h 03m
Thu 12/1010:25 am -
Nonstop4h 42m
Deal found 10/29![United Airlines logo]()
$291
This Alaska Airlines deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/37:04 pm -
1 stop26h 55m
Sat 12/55:46 pm -
1 stop21h 43m
Deal found 10/29![Alaska Airlines logo]()
$290
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/35:59 pm -
Nonstop4h 00m
Sat 12/59:30 am -
Nonstop4h 33m
Deal found 10/26![Delta logo]()
$264
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/56:35 am -
Nonstop4h 26m
Mon 12/78:45 am -
Nonstop4h 51m
Deal found 10/25![United Airlines logo]()
$297
This Southwest deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/2611:55 pm -
Nonstop4h 00m
Thu 12/319:15 pm -
Nonstop4h 40m
Deal found 10/28![Southwest logo]()
$337
This Delta deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/85:59 pm -
Nonstop4h 00m
Thu 12/106:40 am -
1 stop10h 33m
Deal found 10/28![Delta logo]()
$274
This Alaska Airlines 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/215:37 pm -
Nonstop4h 22m
Tue 12/297:58 pm -
Nonstop4h 47m
Deal found 10/26![Alaska Airlines logo]()
$302
This Sun Country Air 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 Sun Country Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/125:48 pm -
1 stop22h 37m
Sun 11/156:05 pm -
1 stop24h 41m
Deal found 10/25![Sun Country Air logo]()
$415
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/163:04 pm -
Nonstop4h 25m
Sat 12/196:00 am -
Nonstop5h 01m
Deal found 10/26![United Airlines logo]()
$315
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/2411:55 pm -
Nonstop4h 00m
Fri 1/2910:00 am -
1 stop6h 10m
Deal found 10/25![Southwest logo]()
$347
This Alaska Airlines deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/251:45 pm -
Nonstop4h 18m
Tue 12/16:00 am -
1 stop16h 41m
Deal found 10/29![Alaska Airlines logo]()
$303
This Delta deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/205:56 pm -
2 stops13h 08m
Tue 12/17:18 pm -
1 stop6h 39m
Deal found 10/28![Delta logo]()
$283
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/184:20 pm -
Nonstop4h 09m
Sun 1/38:13 pm -
Nonstop4h 42m
Deal found 10/25![United Airlines logo]()
$327
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.
Wed 11/116:22 pm -
1 stop9h 18m
Sun 11/152:15 pm -
Nonstop4h 41m
Deal found 10/27![Alaska Airlines logo]()
$307
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/2310:30 pm -
1 stop9h 19m
Fri 1/17:59 am -
1 stop9h 36m
Deal found 10/26![Delta logo]()
$288
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/710:40 am -
Nonstop4h 14m
Sat 11/144:05 pm -
Nonstop4h 34m
Deal found 10/25![United Airlines logo]()
$327
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/3011:10 pm -
1 stop6h 05m
Thu 12/35:20 pm -
1 stop8h 15m
Deal found 10/26![Southwest logo]()
$396
This Alaska Airlines 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/97:45 pm -
1 stop7h 55m
Thu 11/127:20 am -
Nonstop4h 43m
Deal found 10/26![Alaska Airlines logo]()
$307
Last-minute flights from California to IllinoisDiscover last-minute flight deals from California to Illinois. Data last updated October 30, 2026 and is based on user searches.
Discover last-minute flight deals from California to Illinois. Data last updated October 30, 2026 and is based on user searches.
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.
Thu 11/129:57 pm -
1 stop29h 16m
Tue 11/174:36 pm -
2 stops9h 47m
Deal found 10/25![Frontier logo]()
$219
This Cheapflightsfares deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1712:03 am -
1 stop13h 28m
Wed 11/255:15 am -
1 stop12h 22m
Deal found 10/28![Frontier logo]()
$223
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.
Wed 11/182:03 pm -
1 stop8h 18m
Wed 12/27:00 am -
1 stop10h 30m
Deal found 10/25![Frontier logo]()
$214
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.
Wed 11/182:03 pm -
1 stop8h 18m
Thu 12/37:00 am -
1 stop10h 30m
Deal found 10/25![Frontier logo]()
$221
This Mytrip deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/196:15 am -
2 stops11h 00m
Mon 11/2312:05 pm -
1 stop7h 04m
Deal found 10/28![Frontier logo]()
$217
This Cheapflightsfares deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/2011:59 pm -
Nonstop4h 15m
Wed 11/255:15 am -
1 stop12h 22m
Deal found 10/28![Frontier logo]()
$222
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/2111:59 pm -
Nonstop4h 15m
Mon 11/2310:00 pm -
Nonstop4h 40m
Deal found 10/25![Frontier logo]()
$213
This Cheapflightsfares deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/219:00 pm -
1 stop12h 00m
Tue 11/245:15 am -
1 stop12h 22m
Deal found 10/28![Frontier logo]()
$218
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/219:00 pm -
1 stop12h 00m
Thu 11/266:40 am -
1 stop19h 17m
Deal found 10/27![Frontier logo]()
$220
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.
Mon 11/237:41 pm -
1 stop7h 29m
Tue 12/19:13 am -
2 stops13h 08m
Deal found 10/25![Frontier logo]()
$212
This Orbitz 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/246:00 am -
1 stop16h 53m
Thu 11/2610:00 pm -
Nonstop4h 40m
Deal found 10/26![Frontier logo]()
$216
This Kiwi.com deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/247:41 pm -
1 stop7h 29m
Tue 12/16:21 am -
2 stops13h 07m
Deal found 10/29![Frontier logo]()
$224
One-way flights from California to IllinoisSearch for one-way flight options from California to Illinois. Find affordable one-way fares based on user searches. Data last updated October 30, 2026.
Search for one-way flight options from California to Illinois. Find affordable one-way fares based on user searches. Data last updated October 30, 2026.
This Trip.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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1711:59 am -
1 stop10h 22m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/27![Frontier logo]()
$72
This Super.com deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/312:08 pm -
1 stop10h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/28![Frontier logo]()
$79
This Trip.com deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/2612:25 pm -
1 stop10h 28m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/28![Frontier logo]()
$88
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.
Wed 12/1612:30 pm -
1 stop10h 24m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/25![Frontier logo]()
$94
This Trip.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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/1412:05 pm -
1 stop10h 16m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/25![Frontier logo]()
$95
This Trip.com deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/127:35 pm -
1 stop8h 02m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/28![Alaska Airlines logo]()
$96
This Super.com deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/1012:33 pm -
1 stop10h 21m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/28![Frontier logo]()
$97
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.
Sat 12/1912:35 pm -
1 stop9h 51m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/27![Frontier logo]()
$98
This Trip.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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/1412:30 pm -
1 stop10h 24m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/27![Frontier logo]()
$98
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/2111:42 am -
1 stop11h 11m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/26![Frontier logo]()
$99
This Trip.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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/1012:30 pm -
1 stop10h 24m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/27![Frontier logo]()
$99
This CheapOair deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/2111:46 am -
1 stop10h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/28![Frontier logo]()
$100
Find flight deals from California to Illinois
Keep the following information in mind while searching for California to Illinois flight deals. Data was last updated October 30, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $212 (Kiwi.com) |
One-way from | $72 (Trip.com) |
Popular in | June |
Cheapest in | April |
Average price | $323 |
Good round-trip deal | $318 or less |
Good one-way deal | $170 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from California to Illinois that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated October 30, 2026.
Use the filters below to find and compare flights from California to Illinois that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
San JoseChicago
SJC San Jose - ORD Chicago O'Hare Intl
SJCORD
San Jose
Tue 12/15
11:59 am-11:59 pm
1 stop10h 00m
Chicago O'Hare Intl
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$102
Santa AnaChicago
SNA Santa Ana J. Wayne/Orange Cnty - ORD Chicago O'Hare Intl
SNAORD
Santa Ana J. Wayne/Orange Cnty
Tue 12/8
6:45 am-5:49 pm
1 stop9h 04m
Chicago O'Hare Intl
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$117
Los AngelesChicago
LAX Los Angeles - MDW Chicago Midway
LAXMDW
Los Angeles
Wed 12/16
11:55 pm-5:55 am
Nonstop4h 00m
Chicago Midway
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$119
Los AngelesChicago
LAX Los Angeles - ORD Chicago O'Hare Intl
LAXORD
Los Angeles
Sat 12/12
3:00 pm-9:01 pm
Nonstop4h 01m
Chicago O'Hare Intl
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$119
OntarioChicago
ONT Ontario - ORD Chicago O'Hare Intl
ONTORD
Ontario
Thu 12/17
7:00 am-9:56 pm
2 stops12h 56m
Chicago O'Hare Intl
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$124
FresnoChicago
FAT Fresno Airterminal - ORD Chicago O'Hare Intl
FATORD
Fresno Airterminal
Mon 11/30
3:37 pm-9:35 pm
3 stops51h 58m
Chicago O'Hare Intl
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$129
Los AngelesChicago
LAX Los Angeles - MDW Chicago Midway
LAXMDW
Los Angeles
Tue 12/1
7:40 am-5:10 pm
1 stop7h 30m
Chicago Midway
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$129
Los AngelesChicago
LAX Los Angeles - MDW Chicago Midway
LAXMDW
Los Angeles
Wed 12/30
11:59 pm-11:01 am
1 stop9h 02m
Chicago Midway
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$129
Los AngelesChicago
LAX Los Angeles - ORD Chicago O'Hare Intl
LAXORD
Los Angeles
Sat 12/26
10:59 pm-9:49 am
1 stop8h 50m
Chicago O'Hare Intl
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$129
Los AngelesChicago
LAX Los Angeles - ORD Chicago O'Hare Intl
LAXORD
Los Angeles
Tue 1/5
2:29 pm-11:58 pm
1 stop7h 29m
Chicago O'Hare Intl
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$129
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from California to Illinois
Have a flexible travel schedule? Discover the best time to fly to Illinois from California with our price prediction graph.
LAX-ORD
SMF-ORD
SNA-ORD
SJC-ORD
LAX-MDW
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 California to Illinois
USCA-USIL
LAX-ORD
SMF-ORD
SNA-ORD
SJC-ORD
What is the cheapest month to book a flight from California to Illinois?
Currently, February is the cheapest month in which you can book a flight from California to Illinois (average of $371). Flying from California to Illinois in June is currently the most expensive (average of $456). 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 CA to IL?
Find hourly flight availability from California to Illinois. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 30, 2026.
It’s typically best to fly out from California to Illinois in the evening. Doing so could potentially save you 14% on the flight price compared to flying at noon, which is usually more expensive.
How much does it cost to fly round-trip from California to Illinois?
Airfare is below average for this route at the moment.
California to Illinois flights typically cost between $240 and $489 in November.The cheapest round-trip price found within the last 5 days was $212 on Frontier (Nov 23-Dec 1).
How far ahead should I book a flight from California to Illinois?
The price you pay for your flight from California to Illinois may vary depending on when you book. For the best chance of a lower fare, look to book 41 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 California to Illinois?
Use this chart to determine the cheapest time to fly round-trip from California to Illinois. Price data was last updated on October 24, 2026.
Travelers seeking maximum savings on their California to Illinois flight should consider departing on Friday mornings when fares are most often at their lowest. Sunday mornings flights should be avoided if possible as fares are typically the most expensive at this time.
Reviews of airlines servicing Illinois
Get insights into the airlines that provide service to Illinois. 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 Illinois. Reviews last updated October 30, 2026.
See what other customers who have flown with Alaska Airlines,Southwest, andUnited Airlines from California to Illinois have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
7.8
Entertainment
7.0
Boarding
8.1
Overall
7.9
Food
7.0
Crew
8.5
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Comfort
7.8
Entertainment
7.0
Boarding
8.1
Overall
7.9
Food
7.0
Crew
8.5
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Comfort
7.8
Entertainment
7.0
Boarding
8.1
Overall
7.9
Food
7.0
Crew
8.5
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Comfort
7.8
Entertainment
7.0
Boarding
8.1
Overall
7.9
Food
7.0
Crew
8.5
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Comfort
7.8
Entertainment
7.0
Boarding
8.1
Overall
7.9
Food
7.0
Crew
8.5
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Comfort
7.8
Entertainment
7.0
Boarding
8.1
Overall
7.9
Food
7.0
Crew
8.5
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Related info for your journey
Find useful and relevant information for your journey from California to Illinois. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for California to Illinois
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Illinois by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from California to Illinois by cabin class
Find flights from California to Illinois, based on your preferred cabin class, be it economy, premium economy, business, or first class.
California and Illinois flights
Browse other California and Illinois flight options. Last updated on October 30, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Find a return flight route from Illinois
Find the right flight back to California after your stay in Illinois
California to Illinois flights
Consider these flights traveling from California to Illinois.
Top 7 airlines flying from California to Illinois
Discover the top 7 airlines that operate flights from California to Illinois. 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 30, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$99 | Average$312 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$122 | Average$369 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$165 | Average$437 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$166 | Average$345 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$178 | Average$506 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$191 | Average$482 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$232 | Average$464 | FlexibilityNo cancel fee | On-time63% |