$91+ Cheap flights from Orange County to Illinois
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 3/5. Fares are subject to change and may not be available on all flights or dates of travel.
SNA — ORD
Mar 8 — Mar 151
1 adult, Economy
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Find cheap flights from Orange County 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 Orange County to IllinoisExplore the most affordable flight options available from Orange County to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 6, 2026.
Explore the most affordable flight options available from Orange County to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 6, 2026.
This Kiwi.com deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” 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 3/51:20 pm
SNA
- STL
1 stop6h 06m
Multiple Airlines
Fri 3/68:12 pm
STL
- SNA
1 stop16h 35m
Multiple Airlines
Deal found 2/3![Multiple Airlines logo]()
$193
This Kiwi.com deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” 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 3/58:58 am
SNA
- STL
1 stop10h 28m
Frontier
Fri 3/68:12 pm
STL
- SNA
1 stop16h 35m
Frontier
Deal found 2/4![Frontier logo]()
$195
This Kiwi.com deal was found by Cheapflights users on 2/5. Clicking the “Pick Dates” 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 3/1210:48 am
SNA
- STL
1 stop6h 23m
Multiple Airlines
Wed 3/188:12 pm
STL
- SNA
1 stop16h 55m
Multiple Airlines
Deal found 2/5![Multiple Airlines logo]()
$197
This Kiwi.com deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 3/1311:32 am
SNA
- STL
1 stop20h 17m
Multiple Airlines
Mon 3/238:12 pm
STL
- SNA
2 stops39h 41m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$202
This Kiwi.com deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 3/34:37 pm
SNA
- STL
2 stops21h 16m
Multiple Airlines
Fri 3/68:12 pm
STL
- SNA
1 stop16h 35m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$204
This Kiwi.com deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” 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 3/44:37 pm
SNA
- STL
1 stop26h 49m
Multiple Airlines
Sun 3/86:19 pm
STL
- SNA
1 stop20h 08m
Multiple Airlines
Deal found 2/4![Multiple Airlines logo]()
$207
This Kiwi.com deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” 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 3/301:12 pm
SNA
- STL
1 stop20h 07m
Frontier
Wed 4/88:16 pm
STL
- SNA
2 stops24h 06m
Frontier
Deal found 2/4![Frontier logo]()
$216
This Kiwi.com deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” 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 3/301:12 pm
SNA
- STL
1 stop20h 07m
Multiple Airlines
Mon 4/612:22 pm
STL
- SNA
1 stop23h 31m
Multiple Airlines
Deal found 2/4![Multiple Airlines logo]()
$218
This Kiwi.com deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” 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 2/267:25 pm
SNA
- STL
1 stop22h 42m
Frontier
Sun 3/110:11 pm
STL
- SNA
1 stop12h 02m
Frontier
Deal found 2/3![Frontier logo]()
$222
This Kiwi.com deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” 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 2/267:25 pm
SNA
- STL
1 stop22h 42m
Multiple Airlines
Mon 3/210:11 pm
STL
- SNA
1 stop19h 31m
Multiple Airlines
Deal found 2/3![Multiple Airlines logo]()
$224
This Kiwi.com deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/268:20 pm
SNA
- STL
1 stop12h 59m
Multiple Airlines
Sun 3/298:06 pm
STL
- SNA
1 stop15h 47m
Multiple Airlines
Deal found 2/1![Multiple Airlines logo]()
$225
This United Airlines deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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.
Mon 3/22:22 pm
SNA
- ORD
Nonstop4h 03m
United Airlines
Mon 3/97:40 pm
ORD
- SNA
Nonstop4h 46m
United Airlines
Deal found 2/2![United Airlines logo]()
$269
Best flights from Orange County to IllinoisDiscover carefully curated flight deals from Orange County to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 6, 2026.
Discover carefully curated flight deals from Orange County to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 6, 2026.
This Kiwi.com deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” 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 3/301:12 pm
SNA
- STL
1 stop20h 07m
Frontier
Wed 4/88:16 pm
STL
- SNA
2 stops24h 06m
Frontier
Deal found 2/4![Frontier logo]()
$216
This Kiwi.com deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 3/268:20 pm
SNA
- STL
1 stop12h 59m
Multiple Airlines
Tue 3/3112:14 pm
STL
- SNA
1 stop10h 59m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$225
This Southwest deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/612:55 pm
SNA
- STL
1 stop6h 15m
Southwest
Sat 5/95:00 pm
STL
- SNA
1 stop5h 50m
Southwest
Deal found 2/4![Southwest logo]()
$237
This United Airlines deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/67:00 am
SNA
- STL
1 stop7h 57m
United Airlines
Sat 5/94:15 pm
STL
- SNA
1 stop6h 29m
United Airlines
Deal found 2/4![United Airlines logo]()
$237
This American Airlines deal was found by Cheapflights users on 2/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/61:30 pm
SNA
- STL
1 stop8h 16m
American Airlines
Sat 5/96:11 pm
STL
- SNA
1 stop6h 28m
American Airlines
Deal found 2/5![American Airlines logo]()
$237
This Alaska Airlines deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/26:45 am
SNA
- ORD
1 stop11h 07m
Alaska Airlines
Tue 5/58:00 am
ORD
- SNA
1 stop10h 51m
Alaska Airlines
Deal found 2/3![Alaska Airlines logo]()
$276
This Delta deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” 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 3/317:05 am
SNA
- STL
1 stop8h 02m
Delta
Tue 4/72:12 pm
STL
- SNA
1 stop5h 58m
Delta
Deal found 2/4![Delta logo]()
$277
This United Airlines deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/511:10 am
SNA
- STL
1 stop7h 33m
United Airlines
Tue 5/126:00 am
STL
- SNA
1 stop7h 11m
United Airlines
Deal found 2/1![United Airlines logo]()
$257
This Delta deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” 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 4/15:00 pm
SNA
- STL
1 stop5h 21m
Delta
Wed 4/82:12 pm
STL
- SNA
1 stop5h 58m
Delta
Deal found 2/4![Delta logo]()
$277
This Alaska Airlines deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” 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 3/38:05 am
SNA
- ORD
1 stop13h 51m
Alaska Airlines
Mon 3/93:54 pm
ORD
- SNA
1 stop8h 36m
Alaska Airlines
Deal found 2/4![Alaska Airlines logo]()
$286
This Expedia deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/1111:32 am
SNA
- STL
1 stop5h 40m
Multiple Airlines
Wed 5/136:00 am
STL
- SNA
1 stop10h 18m
Multiple Airlines
Deal found 2/3![Multiple Airlines logo]()
$287
This Southwest deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” 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 4/17:30 pm
SNA
- MDW
1 stop7h 30m
Southwest
Sun 4/55:50 pm
MDW
- SNA
1 stop6h 20m
Southwest
Deal found 2/3![Southwest logo]()
$289
This Kiwi.com deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” 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 2/1912:46 pm
SNA
- MDW
1 stop8h 55m
Frontier
Sun 2/223:21 pm
MDW
- SNA
1 stop27h 04m
Frontier
Deal found 2/4![Frontier logo]()
$293
This United Airlines deal was found by Cheapflights users on 2/5. Clicking the “Pick Dates” 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 4/292:20 pm
SNA
- ORD
Nonstop4h 05m
United Airlines
Sat 5/24:05 pm
ORD
- SNA
Nonstop4h 43m
United Airlines
Deal found 2/5![United Airlines logo]()
$269
This Southwest deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 4/173:40 pm
SNA
- MDW
1 stop6h 15m
Southwest
Mon 4/205:15 pm
MDW
- SNA
1 stop6h 40m
Southwest
Deal found 2/2![Southwest logo]()
$289
This Delta deal was found by Cheapflights users on 2/5. Clicking the “Pick Dates” 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 4/2911:55 am
SNA
- MDW
1 stop8h 33m
Delta
Tue 5/52:12 pm
MDW
- SNA
1 stop8h 45m
Delta
Deal found 2/5![Delta logo]()
$289
This Alaska Airlines deal was found by Cheapflights users on 2/5. Clicking the “Pick Dates” 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 2/2612:56 pm
SNA
- ORD
1 stop9h 00m
Alaska Airlines
Mon 3/27:00 am
ORD
- SNA
1 stop11h 26m
Alaska Airlines
Deal found 2/5![Alaska Airlines logo]()
$289
This United Airlines deal was found by Cheapflights users on 2/5. Clicking the “Pick Dates” 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 4/166:45 am
SNA
- ORD
Nonstop4h 15m
United Airlines
Wed 4/227:49 pm
ORD
- SNA
Nonstop4h 41m
United Airlines
Deal found 2/5![United Airlines logo]()
$269
This Kiwi.com deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” 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 2/196:48 pm
SNA
- RFD
1 stop22h 13m
Multiple Airlines
Mon 2/237:51 pm
RFD
- SNA
2 stops27h 06m
Multiple Airlines
Deal found 2/3![Multiple Airlines logo]()
$299
This American Airlines deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/183:24 pm
SNA
- PIA
1 stop6h 01m
American Airlines
Sun 3/225:22 pm
PIA
- SNA
1 stop7h 23m
American Airlines
Deal found 2/4![American Airlines logo]()
$334
This Southwest deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 3/89:05 pm
SNA
- MDW
1 stop6h 40m
Southwest
Wed 3/115:55 am
MDW
- SNA
1 stop6h 15m
Southwest
Deal found 2/2![Southwest logo]()
$289
This Delta deal was found by Cheapflights users on 2/5. Clicking the “Pick Dates” 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 4/178:00 am
SNA
- MDW
1 stop8h 36m
Delta
Mon 4/202:12 pm
MDW
- SNA
1 stop8h 45m
Delta
Deal found 2/5![Delta logo]()
$289
This United Airlines deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 2/2410:51 am
SNA
- ORD
Nonstop4h 03m
United Airlines
Sat 2/284:00 pm
ORD
- SNA
1 stop7h 45m
United Airlines
Deal found 2/2![United Airlines logo]()
$279
This Southwest deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” 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 3/98:45 pm
SNA
- MDW
1 stop7h 00m
Southwest
Wed 3/1112:25 pm
MDW
- SNA
1 stop8h 30m
Southwest
Deal found 2/4![Southwest logo]()
$289
This Delta deal was found by Cheapflights users on 2/5. Clicking the “Pick Dates” 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 4/1511:55 am
SNA
- MDW
1 stop8h 33m
Delta
Mon 4/202:12 pm
MDW
- SNA
1 stop8h 45m
Delta
Deal found 2/5![Delta logo]()
$289
This Kiwi.com deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” 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 2/197:25 pm
SNA
- RFD
1 stop21h 36m
Multiple Airlines
Sun 2/2212:41 pm
RFD
- SNA
1 stop21h 32m
Multiple Airlines
Deal found 2/4![Multiple Airlines logo]()
$324
This American Airlines deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/173:23 pm
SNA
- PIA
1 stop6h 02m
American Airlines
Sat 2/2110:01 am
PIA
- SNA
1 stop6h 22m
American Airlines
Deal found 2/2![American Airlines logo]()
$359
This United Airlines deal was found by Cheapflights users on 2/5. Clicking the “Pick Dates” 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 4/173:29 pm
SNA
- ORD
1 stop7h 16m
United Airlines
Mon 4/207:49 pm
ORD
- SNA
Nonstop4h 41m
United Airlines
Deal found 2/5![United Airlines logo]()
$279
This Southwest deal was found by Cheapflights users on 2/5. Clicking the “Pick Dates” 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 4/297:50 am
SNA
- MDW
1 stop7h 05m
Southwest
Sat 5/25:30 pm
MDW
- SNA
1 stop5h 50m
Southwest
Deal found 2/5![Southwest logo]()
$289
This Delta deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” 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 3/211:15 am
SNA
- ORD
1 stop10h 37m
Delta
Mon 3/92:20 pm
ORD
- SNA
1 stop10h 09m
Delta
Deal found 2/3![Delta logo]()
$289
Last-minute flights from Orange County to IllinoisDiscover last-minute flight deals from Orange County to Illinois. Data last updated February 6, 2026 and is based on user searches.
Discover last-minute flight deals from Orange County to Illinois. Data last updated February 6, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” 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 2/267:25 pm
SNA
- STL
1 stop22h 42m
Frontier
Sun 3/110:11 pm
STL
- SNA
1 stop12h 02m
Frontier
Deal found 2/3![Frontier logo]()
$222
This Kiwi.com deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” 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 2/267:25 pm
SNA
- STL
1 stop22h 42m
Multiple Airlines
Mon 3/210:11 pm
STL
- SNA
1 stop19h 31m
Multiple Airlines
Deal found 2/3![Multiple Airlines logo]()
$224
This American Airlines deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/23:23 pm
SNA
- ORD
Nonstop4h 12m
American Airlines
Mon 3/98:10 am
ORD
- SNA
Nonstop4h 36m
American Airlines
Deal found 2/3![American Airlines logo]()
$269
This Kiwi.com deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 3/34:37 pm
SNA
- STL
2 stops21h 16m
Multiple Airlines
Fri 3/68:12 pm
STL
- SNA
1 stop16h 35m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$204
This Kiwi.com deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” 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 3/44:37 pm
SNA
- STL
1 stop26h 49m
Multiple Airlines
Sun 3/86:19 pm
STL
- SNA
1 stop20h 08m
Multiple Airlines
Deal found 2/4![Multiple Airlines logo]()
$207
This Kiwi.com deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” 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 3/51:20 pm
SNA
- STL
1 stop6h 06m
Multiple Airlines
Fri 3/68:12 pm
STL
- SNA
1 stop16h 35m
Multiple Airlines
Deal found 2/3![Multiple Airlines logo]()
$193
This Kiwi.com deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” 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 3/58:58 am
SNA
- STL
1 stop10h 28m
Frontier
Fri 3/68:12 pm
STL
- SNA
1 stop16h 35m
Frontier
Deal found 2/4![Frontier logo]()
$195
This Kiwi.com deal was found by Cheapflights users on 2/5. Clicking the “Pick Dates” 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 3/1210:48 am
SNA
- STL
1 stop6h 23m
Multiple Airlines
Wed 3/188:12 pm
STL
- SNA
1 stop16h 55m
Multiple Airlines
Deal found 2/5![Multiple Airlines logo]()
$197
This Kiwi.com deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 3/1311:32 am
SNA
- STL
1 stop20h 17m
Multiple Airlines
Mon 3/238:12 pm
STL
- SNA
2 stops39h 41m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$202
This Kiwi.com deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/268:20 pm
SNA
- STL
1 stop12h 59m
Multiple Airlines
Sun 3/298:06 pm
STL
- SNA
1 stop15h 47m
Multiple Airlines
Deal found 2/1![Multiple Airlines logo]()
$225
This Kiwi.com deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” 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 3/301:12 pm
SNA
- STL
1 stop20h 07m
Frontier
Wed 4/88:16 pm
STL
- SNA
2 stops24h 06m
Frontier
Deal found 2/4![Frontier logo]()
$216
This Kiwi.com deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” 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 3/301:12 pm
SNA
- STL
1 stop20h 07m
Multiple Airlines
Mon 4/612:22 pm
STL
- SNA
1 stop23h 31m
Multiple Airlines
Deal found 2/4![Multiple Airlines logo]()
$218
One-way flights from Orange County to IllinoisSearch for one-way flight options from Orange County to Illinois. Find affordable one-way fares based on user searches. Data last updated February 6, 2026.
Search for one-way flight options from Orange County to Illinois. Find affordable one-way fares based on user searches. Data last updated February 6, 2026.
This Trip.com deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 3/58:58 am
SNA
- STL
1 stop10h 28m
Frontier
Deal found 2/2![Frontier logo]()
$91
This WAYA deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure WAYA is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/51:20 pm
SNA
- STL
1 stop6h 06m
Multiple Airlines
Deal found 2/3![Multiple Airlines logo]()
$98
This Kiwi.com deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 4/105:56 pm
SNA
- STL
1 stop16h 25m
Frontier
Deal found 2/2![Frontier logo]()
$99
This Expedia deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/78:20 pm
SNA
- STL
1 stop22h 40m
Frontier
Deal found 2/3![Frontier logo]()
$101
This Kiwi.com deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” 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 3/302:53 pm
SNA
- STL
1 stop18h 26m
Multiple Airlines
Deal found 2/4![Multiple Airlines logo]()
$105
This Kiwi.com deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” 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 3/246:45 am
SNA
- STL
1 stop26h 34m
Multiple Airlines
Deal found 2/3![Multiple Airlines logo]()
$107
This Kiwi.com deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” 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 2/267:25 pm
SNA
- STL
1 stop22h 42m
Frontier
Deal found 2/4![Frontier logo]()
$112
This Frontier deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” 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 4/2011:32 am
SNA
- STL
1 stop5h 40m
Frontier
Deal found 2/3![Frontier logo]()
$116
This Kiwi.com deal was found by Cheapflights users on 2/5. Clicking the “Pick Dates” 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 2/274:02 pm
SNA
- STL
1 stop23h 44m
Frontier
Deal found 2/5![Frontier logo]()
$117
This Kiwi.com deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” 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 2/124:37 pm
SNA
- STL
1 stop26h 49m
Multiple Airlines
Deal found 2/3![Multiple Airlines logo]()
$118
This Kiwi.com deal was found by Cheapflights users on 2/5. Clicking the “Pick Dates” 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 2/181:20 pm
SNA
- ORD
1 stop29h 43m
Multiple Airlines
Deal found 2/5![Multiple Airlines logo]()
$121
This Trip.com deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” 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 2/1912:46 pm
SNA
- MDW
1 stop8h 55m
Frontier
Deal found 2/3![Frontier logo]()
$124
Find flight deals from Orange County to Illinois
Keep the following information in mind while searching for Orange County to Illinois flight deals. Data was last updated February 6, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $193 (Kiwi.com) |
One-way from | $91 (Trip.com) |
Popular in | January |
Cheapest in | September |
Average price | $279 |
Cheapflights Fare Finder
Customize your flight search to find flights from Orange County 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 2,558,603 searches. Data last updated February 6, 2026.
Use the filters below to find and compare flights from Orange County to Illinois that are best for you.
Fly from
Orange County
Fly to
Illinois
Route
Depart
Return
Price
Santa AnaSt. Louis
SNA - STL
SNASTL
Santa Ana J. Wayne/Orange Cnty
Mon 3/30
1:12 pm-11:19 am
1 stop20h 07m
Lambert-St Louis
Wed 4/8
8:16 pm-6:22 pm
2 stops24h 06m
$216
Santa AnaSt. Louis
SNA - STL
SNASTL
Santa Ana J. Wayne/Orange Cnty
Thu 3/26
8:20 pm-11:19 am
1 stop12h 59m
Lambert-St Louis
Tue 3/31
12:14 pm-9:13 pm
1 stop10h 59m
$225
Santa AnaSt. Louis
SNA - STL
SNASTL
Santa Ana J. Wayne/Orange Cnty
Wed 5/6
12:55 pm-9:10 pm
1 stop6h 15m
Lambert-St Louis
Sat 5/9
5:00 pm-8:50 pm
1 stop5h 50m
$237
Santa AnaSt. Louis
SNA - STL
SNASTL
Santa Ana J. Wayne/Orange Cnty
Wed 5/6
7:00 am-4:57 pm
1 stop7h 57m
Lambert-St Louis
Sat 5/9
4:15 pm-8:44 pm
1 stop6h 29m
$237
Santa AnaSt. Louis
SNA - STL
SNASTL
Santa Ana J. Wayne/Orange Cnty
Wed 5/6
1:30 pm-11:46 pm
1 stop8h 16m
Lambert-St Louis
Sat 5/9
6:11 pm-10:39 pm
1 stop6h 28m
$237
Santa AnaSt. Louis
SNA - STL
SNASTL
Santa Ana J. Wayne/Orange Cnty
Tue 5/5
11:10 am-8:43 pm
1 stop7h 33m
Lambert-St Louis
Tue 5/12
6:00 am-11:11 am
1 stop7h 11m
$257
Santa AnaChicago
SNA - ORD
SNAORD
Santa Ana J. Wayne/Orange Cnty
Wed 4/29
2:20 pm-8:25 pm
Nonstop4h 05m
Chicago O'Hare Intl
Sat 5/2
4:05 pm-6:48 pm
Nonstop4h 43m
$269
Santa AnaChicago
SNA - ORD
SNAORD
Santa Ana J. Wayne/Orange Cnty
Thu 4/16
6:45 am-1:00 pm
Nonstop4h 15m
Chicago O'Hare Intl
Wed 4/22
7:49 pm-10:30 pm
Nonstop4h 41m
$269
Santa AnaChicago
SNA - ORD
SNAORD
Santa Ana J. Wayne/Orange Cnty
Sat 5/2
6:45 am-7:52 pm
1 stop11h 07m
Chicago O'Hare Intl
Tue 5/5
8:00 am-4:51 pm
1 stop10h 51m
$276
Santa AnaSt. Louis
SNA - STL
SNASTL
Santa Ana J. Wayne/Orange Cnty
Tue 3/31
7:05 am-5:07 pm
1 stop8h 02m
Lambert-St Louis
Tue 4/7
2:12 pm-6:10 pm
1 stop5h 58m
$277
Showing 1-10 of 60 results
Best time to book a flight from Orange County to Illinois
Have a flexible travel schedule? Discover the best time to fly to Illinois from Orange County with our price prediction graph.
SNA-STL
SNA-ORD
SNA-MDW
SNA-RFD
LGB-ORD
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 Orange County to Illinois
zzKFI-USIL
SNA-STL
SNA-ORD
SNA-MDW
SNA-RFD
What is the cheapest month to book a flight from Orange County to Illinois?
Currently, February is the cheapest month in which you can book a flight from Orange County to Illinois (average of $147). Flying from Orange County to Illinois in March is currently the most expensive (average of $283). 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 KFI to IL?
Find hourly flight availability from Orange County 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 February 6, 2026.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Orange County to Illinois as you normally would.
Weekly flight availability from Orange County to Illinois
Explore weekly flight availability from Orange County to Illinois. 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 February 6, 2026.
The most flights from zzKFI to USIL are scheduled on a Wednesday (22 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (15 on average).
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 February 6, 2026.
Read reviews from past customers who have flown Alaska Airlines, Southwest, and United Airlines from Orange County to Illinois. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
7.8
Entertainment
7.0
Boarding
8.1
Crew
8.5
Food
7.1
Overall
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Jan 2026
STS - LAX
Comfort
7.8
Entertainment
7.0
Boarding
8.1
Crew
8.5
Food
7.1
Overall
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Jan 2026
STS - LAX
Comfort
7.8
Entertainment
7.0
Boarding
8.1
Crew
8.5
Food
7.1
Overall
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Jan 2026
STS - LAX
Comfort
7.8
Entertainment
7.0
Boarding
8.1
Crew
8.5
Food
7.1
Overall
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Jan 2026
STS - LAX
Comfort
7.8
Entertainment
7.0
Boarding
8.1
Crew
8.5
Food
7.1
Overall
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Jan 2026
STS - LAX
Comfort
7.8
Entertainment
7.0
Boarding
8.1
Crew
8.5
Food
7.1
Overall
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Jan 2026
STS - LAX
Related info for your journey
Find useful and relevant information for your journey from Orange County 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 Orange County 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 Orange County to Illinois by cabin class
Find flights from Orange County to Illinois, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Orange County and Illinois flights
Browse other Orange County and Illinois flight options. Last updated on February 6, 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 Orange County after your stay in Illinois
Orange County to Illinois flights
Consider these flights traveling from Orange County to Illinois.
Top 6 airlines flying from Orange County to Illinois
Discover the top 6 airlines that operate flights from Orange County 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 2,558,603 searches. Data last updated February 6, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$103 | Average$194 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$152 | Average$232 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$190 | Average$476 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$269 | Average$449 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$269 | Average$452 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$288 | Average$443 | FlexibilityNo cancel fee | On-time63% |