$104+ Cheap flights from Oklahoma City (OKC) 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 10/12. Fares are subject to change and may not be available on all flights or dates of travel.
OKC — ORD
Oct 6 — Oct 131
Round-trip
1 adult, Economy
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Find cheap flights from Oklahoma City 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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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 Oklahoma City to Illinois
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Cheapest flights from Oklahoma City to IllinoisExplore the most affordable flight options available from Oklahoma City to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 6, 2026.
Explore the most affordable flight options available from Oklahoma City to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 6, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/1. 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 9/248:30 pm -
1 stop22h 47m
Wed 9/308:10 pm -
1 stop23h 25m
Deal found 9/1![Frontier logo]()
$198
This Kiwi.com deal was found by Cheapflights users on 9/1. 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 9/248:30 pm -
1 stop22h 47m
Wed 9/302:29 pm -
2 stops18h 18m
Deal found 9/1![Multiple Airlines logo]()
$205
This Trip.com deal was found by Cheapflights users on 9/2. 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.
Tue 9/298:30 pm -
1 stop22h 47m
Fri 10/28:10 pm -
1 stop23h 25m
Deal found 9/2![Frontier logo]()
$219
This Kiwi.com deal was found by Cheapflights users on 9/1. 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.
Wed 10/288:19 pm -
1 stop17h 00m
Sun 11/15:24 pm -
1 stop26h 00m
Deal found 9/1![Multiple Airlines logo]()
$220
This Kiwi.com deal was found by Cheapflights users on 9/3. 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 10/18:30 pm -
1 stop22h 47m
Thu 10/84:30 pm -
2 stops51h 02m
Deal found 9/3![Frontier logo]()
$224
This Kiwi.com deal was found by Cheapflights users on 9/3. 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.
Wed 9/308:30 pm -
2 stops14h 47m
Fri 10/28:10 pm -
1 stop23h 25m
Deal found 9/3![Frontier logo]()
$234
This CheapOair deal was found by Cheapflights users on 9/2. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/22:25 pm -
1 stop21h 07m
Sat 10/38:10 pm -
1 stop23h 25m
Deal found 9/2![Frontier logo]()
$240
This CheapOair deal was found by Cheapflights users on 8/31. Clicking the “Pick Dates” 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 9/282:25 pm -
1 stop21h 07m
Mon 10/58:10 pm -
1 stop23h 25m
Deal found 8/31![Frontier logo]()
$245
This Kiwi.com deal was found by Cheapflights users on 9/3. 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.
Mon 10/58:30 pm -
2 stops17h 47m
Thu 10/86:30 am -
1 stop13h 12m
Deal found 9/3![Frontier logo]()
$258
This Kiwi.com deal was found by Cheapflights users on 9/4. 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 11/188:19 pm -
1 stop28h 02m
Fri 12/410:41 pm -
1 stop20h 48m
Deal found 9/4![Frontier logo]()
$259
This Trip.com deal was found by Cheapflights users on 9/2. 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 10/228:27 pm -
1 stop27h 57m
Sun 10/256:30 am -
1 stop13h 12m
Deal found 9/2![Frontier logo]()
$260
This Kiwi.com deal was found by Cheapflights users on 9/3. 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.
Wed 12/28:25 pm -
1 stop22h 57m
Mon 12/710:41 pm -
1 stop20h 48m
Deal found 9/3![Frontier logo]()
$262
Best flights from Oklahoma City to IllinoisDiscover carefully curated flight deals from Oklahoma City to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 6, 2026.
Discover carefully curated flight deals from Oklahoma City to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 6, 2026.
This CheapOair deal was found by Cheapflights users on 8/31. Clicking the “Pick Dates” 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 10/156:45 pm -
1 stop17h 50m
Mon 10/198:00 pm -
1 stop23h 42m
Deal found 8/31![Frontier logo]()
$260
This Delta deal was found by Cheapflights users on 9/1. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/207:25 am -
1 stop4h 43m
Wed 10/217:00 am -
1 stop5h 31m
Deal found 9/1![Delta logo]()
$295
This Southwest deal was found by Cheapflights users on 8/31. Clicking the “Pick Dates” 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 10/173:25 pm -
1 stop8h 15m
Tue 10/208:30 am -
1 stop6h 50m
Deal found 8/31![Southwest logo]()
$305
This American Airlines deal was found by Cheapflights users on 9/1. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/223:17 pm -
2 stops8h 51m
Tue 9/297:00 am -
1 stop6h 04m
Deal found 9/1![American Airlines logo]()
$324
This United Airlines deal was found by Cheapflights users on 9/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/26:00 pm -
Nonstop2h 23m
Mon 12/77:55 pm -
Nonstop2h 29m
Deal found 9/3![United Airlines logo]()
$325
This Southwest deal was found by Cheapflights users on 9/3. 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 9/3012:35 pm -
1 stop7h 20m
Fri 10/25:50 pm -
1 stop6h 55m
Deal found 9/3![Southwest logo]()
$305
This Delta deal was found by Cheapflights users on 9/1. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/25:25 pm -
1 stop5h 30m
Sat 12/511:28 am -
1 stop6h 47m
Deal found 9/1![Delta logo]()
$345
This Southwest deal was found by Cheapflights users on 9/2. 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.
Sat 10/317:45 am -
2 stops6h 00m
Mon 11/22:05 pm -
2 stops8h 20m
Deal found 9/2![Southwest logo]()
$315
This American Airlines deal was found by Cheapflights users on 9/3. 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.
Fri 9/187:10 pm -
1 stop4h 55m
Tue 9/2212:08 pm -
1 stop3h 58m
Deal found 9/3![American Airlines logo]()
$349
This United Airlines deal was found by Cheapflights users on 9/1. 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.
Wed 10/285:34 pm -
1 stop5h 25m
Sat 10/318:46 am -
1 stop7h 35m
Deal found 9/1![United Airlines logo]()
$365
This American Airlines deal was found by Cheapflights users on 9/2. 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.
Thu 9/177:10 pm -
1 stop4h 58m
Mon 9/214:43 pm -
1 stop4h 22m
Deal found 9/2![American Airlines logo]()
$349
This United Airlines deal was found by Cheapflights users on 9/2. 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.
Thu 10/227:15 am -
Nonstop2h 25m
Sun 10/259:27 pm -
Nonstop2h 27m
Deal found 9/2![United Airlines logo]()
$374
This American Airlines deal was found by Cheapflights users on 9/3. 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.
Sat 9/195:39 pm -
1 stop6h 24m
Wed 9/235:02 am -
1 stop7h 03m
Deal found 9/3![American Airlines logo]()
$349
This Southwest deal was found by Cheapflights users on 9/3. 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.
Fri 10/232:00 pm -
1 stop5h 45m
Sun 10/255:00 am -
1 stop4h 30m
Deal found 9/3![Southwest logo]()
$353
This United Airlines deal was found by Cheapflights users on 9/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/25:49 pm -
1 stop5h 10m
Sat 10/38:00 am -
2 stops12h 05m
Deal found 9/3![United Airlines logo]()
$380
This American Airlines deal was found by Cheapflights users on 9/2. 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.
Fri 9/185:39 pm -
1 stop6h 24m
Tue 9/224:24 pm -
1 stop4h 41m
Deal found 9/2![American Airlines logo]()
$349
This Southwest deal was found by Cheapflights users on 9/3. 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.
Fri 9/256:40 am -
1 stop4h 30m
Tue 9/292:50 pm -
2 stops6h 00m
Deal found 9/3![Southwest logo]()
$367
This United Airlines deal was found by Cheapflights users on 9/4. 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.
Thu 11/51:19 pm -
Nonstop2h 19m
Mon 11/99:25 pm -
Nonstop2h 29m
Deal found 9/4![United Airlines logo]()
$385
This Southwest deal was found by Cheapflights users on 9/2. 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 11/1310:50 am -
2 stops6h 55m
Mon 11/161:20 pm -
2 stops7h 20m
Deal found 9/2![Southwest logo]()
$367
This Delta deal was found by Cheapflights users on 9/4. 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.
Fri 10/25:30 am -
1 stop7h 33m
Fri 10/96:05 pm -
1 stop5h 53m
Deal found 9/4![Delta logo]()
$497
This United Airlines deal was found by Cheapflights users on 8/31. Clicking the “Pick Dates” 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 10/31:17 pm -
1 stop5h 44m
Tue 10/66:15 am -
1 stop5h 39m
Deal found 8/31![United Airlines logo]()
$394
This Delta deal was found by Cheapflights users on 9/4. 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.
Sat 9/198:00 am -
1 stop6h 56m
Fri 10/96:05 pm -
1 stop5h 53m
Deal found 9/4![Delta logo]()
$507
This Southwest deal was found by Cheapflights users on 9/5. 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.
Fri 10/97:20 pm -
1 stop5h 00m
Mon 10/1210:25 pm -
Nonstop2h 10m
Deal found 9/5![Southwest logo]()
$395
This Southwest deal was found by Cheapflights users on 9/5. 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.
Sat 10/32:50 pm -
1 stop5h 05m
Sat 10/107:00 pm -
Nonstop2h 10m
Deal found 9/5![Southwest logo]()
$395
This United Airlines deal was found by Cheapflights users on 9/5. 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.
Sat 10/105:49 pm -
Nonstop2h 31m
Sun 10/118:10 pm -
Nonstop2h 21m
Deal found 9/5![United Airlines logo]()
$445
This American Airlines deal was found by Cheapflights users on 9/4. 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.
Sat 9/195:39 pm -
1 stop6h 19m
Wed 9/238:48 am -
2 stops8h 42m
Deal found 9/4![American Airlines logo]()
$506
This Delta deal was found by Cheapflights users on 9/2. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/107:27 am -
1 stop4h 21m
Sun 11/152:44 pm -
2 stops9h 15m
Deal found 9/2![Delta logo]()
$577
This Southwest deal was found by Cheapflights users on 9/5. 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.
Fri 10/166:10 pm -
1 stop7h 00m
Thu 10/229:45 am -
Nonstop2h 05m
Deal found 9/5![Southwest logo]()
$395
This Southwest deal was found by Cheapflights users on 9/3. 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.
Fri 10/166:10 pm -
1 stop7h 00m
Sun 10/1810:20 pm -
Nonstop2h 10m
Deal found 9/3![Southwest logo]()
$396
This Delta deal was found by Cheapflights users on 9/1. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/27:27 am -
2 stops11h 38m
Sat 12/510:32 am -
1 stop7h 43m
Deal found 9/1![Delta logo]()
$587
Last-minute flights from Oklahoma City to IllinoisDiscover last-minute flight deals from Oklahoma City to Illinois. Data last updated September 6, 2026 and is based on user searches.
Discover last-minute flight deals from Oklahoma City to Illinois. Data last updated September 6, 2026 and is based on user searches.
This Trip.com deal was found by Cheapflights users on 9/2. 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.
Wed 9/238:30 pm -
1 stop27h 53m
Fri 9/256:30 am -
1 stop13h 04m
Deal found 9/2![Frontier logo]()
$263
This Kiwi.com deal was found by Cheapflights users on 9/1. 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 9/248:30 pm -
1 stop22h 47m
Wed 9/308:10 pm -
1 stop23h 25m
Deal found 9/1![Frontier logo]()
$198
This Kiwi.com deal was found by Cheapflights users on 9/1. 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 9/248:30 pm -
1 stop22h 47m
Wed 9/302:29 pm -
2 stops18h 18m
Deal found 9/1![Multiple Airlines logo]()
$205
This CheapOair deal was found by Cheapflights users on 8/31. Clicking the “Pick Dates” 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 9/282:25 pm -
1 stop21h 07m
Mon 10/58:10 pm -
1 stop23h 25m
Deal found 8/31![Frontier logo]()
$245
This Trip.com deal was found by Cheapflights users on 9/2. 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.
Tue 9/298:30 pm -
1 stop22h 47m
Fri 10/28:10 pm -
1 stop23h 25m
Deal found 9/2![Frontier logo]()
$219
This Kiwi.com deal was found by Cheapflights users on 9/3. 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.
Wed 9/308:30 pm -
2 stops14h 47m
Fri 10/28:10 pm -
1 stop23h 25m
Deal found 9/3![Frontier logo]()
$234
This Kiwi.com deal was found by Cheapflights users on 9/3. 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 10/18:30 pm -
1 stop22h 47m
Thu 10/84:30 pm -
2 stops51h 02m
Deal found 9/3![Frontier logo]()
$224
This CheapOair deal was found by Cheapflights users on 9/2. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/22:25 pm -
1 stop21h 07m
Sat 10/38:10 pm -
1 stop23h 25m
Deal found 9/2![Frontier logo]()
$240
This Kiwi.com deal was found by Cheapflights users on 9/3. 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.
Mon 10/58:30 pm -
2 stops17h 47m
Thu 10/86:30 am -
1 stop13h 12m
Deal found 9/3![Frontier logo]()
$258
This CheapOair deal was found by Cheapflights users on 9/3. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/88:27 pm -
1 stop27h 57m
Sun 10/116:30 am -
1 stop13h 02m
Deal found 9/3![Frontier logo]()
$264
This Trip.com deal was found by Cheapflights users on 9/2. 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 10/228:27 pm -
1 stop27h 57m
Sun 10/256:30 am -
1 stop13h 12m
Deal found 9/2![Frontier logo]()
$260
This Kiwi.com deal was found by Cheapflights users on 9/1. 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.
Wed 10/288:19 pm -
1 stop17h 00m
Sun 11/15:24 pm -
1 stop26h 00m
Deal found 9/1![Multiple Airlines logo]()
$220
One-way flights from Oklahoma City to IllinoisSearch for one-way flight options from Oklahoma City to Illinois. Find affordable one-way fares based on user searches. Data last updated September 6, 2026.
Search for one-way flight options from Oklahoma City to Illinois. Find affordable one-way fares based on user searches. Data last updated September 6, 2026.
This Expedia deal was found by Cheapflights users on 9/2. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/128:27 pm -
1 stop27h 57m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![Frontier logo]()
$104
This Trip.com deal was found by Cheapflights users on 9/3. 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.
Mon 11/28:19 pm -
1 stop28h 02m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![Frontier logo]()
$106
This Jetabroad deal was found by Cheapflights users on 9/3. 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 Jetabroad is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/238:30 pm -
1 stop27h 53m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![Frontier logo]()
$107
This Trip.com deal was found by Cheapflights users on 9/1. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/218:27 pm -
1 stop27h 57m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/1![Frontier logo]()
$109
This Kiwi.com deal was found by Cheapflights users on 9/1. 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.
Wed 9/308:30 pm -
1 stop27h 53m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/1![Frontier logo]()
$111
This CheapOair deal was found by Cheapflights users on 9/1. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/208:27 pm -
1 stop18h 57m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/1![Frontier logo]()
$112
This Kiwi.com deal was found by Cheapflights users on 9/2. 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 11/38:19 pm -
1 stop28h 02m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![Frontier logo]()
$113
This Kiwi.com deal was found by Cheapflights users on 9/4. 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 10/198:27 pm -
1 stop27h 57m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/4![Frontier logo]()
$114
This CheapOair deal was found by Cheapflights users on 9/1. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/138:27 pm -
1 stop18h 57m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/1![Frontier logo]()
$116
This Kiwi.com deal was found by Cheapflights users on 9/2. 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 12/18:25 pm -
1 stop24h 56m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![Frontier logo]()
$116
This CheapOair deal was found by Cheapflights users on 9/2. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/228:30 pm -
1 stop27h 53m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![Frontier logo]()
$118
This Trip.com deal was found by Cheapflights users on 9/3. 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.
Wed 12/28:25 pm -
1 stop22h 57m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![Frontier logo]()
$120
Find flight deals from Oklahoma City to Illinois
Keep the following information in mind while searching for Oklahoma City to Illinois flight deals. Data was last updated September 6, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $198 (Kiwi.com) |
One-way from | $104 (Expedia) |
Popular in | June |
Cheapest in | January |
Average price | $346 |
Good round-trip deal | $375 or less |
Good one-way deal | $208 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Oklahoma City 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 September 6, 2026.
Use the filters below to find and compare flights from Oklahoma City to Illinois that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Oklahoma CitySt. Louis
OKC Oklahoma City Will Rogers World - STL Lambert-St Louis
OKCSTL
Oklahoma City Will Rogers World
Thu 10/15
6:45 pm-12:35 pm
1 stop17h 50m
Lambert-St Louis
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$136
Oklahoma CitySt. Louis
OKC Oklahoma City Will Rogers World - STL Lambert-St Louis
OKCSTL
Oklahoma City Will Rogers World
Wed 9/23
8:30 pm-5:54 pm
2 stops21h 24m
Lambert-St Louis
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$138
Oklahoma CitySt. Louis
OKC Oklahoma City Will Rogers World - STL Lambert-St Louis
OKCSTL
Oklahoma City Will Rogers World
Thu 10/22
6:45 pm-12:35 pm
1 stop17h 50m
Lambert-St Louis
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$140
Oklahoma CitySt. Louis
OKC Oklahoma City Will Rogers World - STL Lambert-St Louis
OKCSTL
Oklahoma City Will Rogers World
Wed 9/23
5:30 am-10:55 am
1 stop5h 25m
Lambert-St Louis
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$148
Oklahoma CitySt. Louis
OKC Oklahoma City Will Rogers World - STL Lambert-St Louis
OKCSTL
Oklahoma City Will Rogers World
Fri 9/11
2:25 pm-11:32 am
1 stop21h 07m
Lambert-St Louis
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$158
Oklahoma CitySt. Louis
OKC Oklahoma City Will Rogers World - STL Lambert-St Louis
OKCSTL
Oklahoma City Will Rogers World
Thu 9/17
8:30 pm-7:17 pm
1 stop22h 47m
Lambert-St Louis
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$158
Oklahoma CityChicago
OKC Oklahoma City Will Rogers World - ORD Chicago O'Hare Intl
OKCORD
Oklahoma City Will Rogers World
Sat 11/7
10:09 am-12:29 pm
Nonstop2h 20m
Chicago O'Hare Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$163
Oklahoma CitySt. Louis
OKC Oklahoma City Will Rogers World - STL Lambert-St Louis
OKCSTL
Oklahoma City Will Rogers World
Thu 10/22
10:12 am-5:40 pm
2 stops31h 28m
Lambert-St Louis
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$168
Oklahoma CityChicago
OKC Oklahoma City Will Rogers World - ORD Chicago O'Hare Intl
OKCORD
Oklahoma City Will Rogers World
Fri 9/11
8:30 pm-12:23 am
1 stop27h 53m
Chicago O'Hare Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$168
Oklahoma CityChicago
OKC Oklahoma City Will Rogers World - MDW Chicago Midway
OKCMDW
Oklahoma City Will Rogers World
Thu 9/24
7:17 am-1:20 pm
1 stop6h 03m
Chicago Midway
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$173
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Oklahoma City to Illinois
Have a flexible travel schedule? Discover the best time to fly to Illinois from Oklahoma City with our price prediction graph.
OKC-STL
OKC-PIA
OKC-ORD
OKC-MDW
OKC-EVV
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 Oklahoma City to Illinois
OKC-USIL
OKC-STL
OKC-PIA
OKC-ORD
OKC-MDW
What is the cheapest month to book a flight from Oklahoma City to Illinois?
Currently, January is the cheapest month in which you can book a flight from Oklahoma City to Illinois (average of $345). Flying from Oklahoma City to Illinois in July is currently the most expensive (average of $453). 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 OKC to IL?
Find hourly flight availability from Oklahoma City 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 September 6, 2026.
It’s optimal to fly from Oklahoma City to Illinois in the morning. By choosing this option you can save up to 26% on the cost of your flight, compared to a flight at noon.
Weekly flight availability from Oklahoma City to Illinois
Explore weekly flight availability from Oklahoma City 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 September 6, 2026.
The most flights from OKC to USIL are scheduled on a Thursday (25 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (4 on average).
How much does it cost to fly round-trip from Oklahoma City to Illinois?
Airfare is below average for this route at the moment.
Oklahoma City to Illinois flights typically cost between $260 and $417 in October.The cheapest round-trip price found within the last 5 days was $258 on Frontier (Oct 5-Oct 8).
How far ahead should I book a flight from Oklahoma City to Illinois?
The best time to book flights from Oklahoma City to Illinois is 75 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
What is the cheapest day to fly from Oklahoma City to Illinois?
Use this chart to determine the cheapest time to fly round-trip from Oklahoma City to Illinois. Price data was last updated on September 5, 2026.
Travelers seeking maximum savings on their Oklahoma City to Illinois flight should consider departing on Tuesday afternoons when fares are most often at their lowest. Wednesday evenings 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 September 6, 2026.
Peruse reviews from past customers who have flown with Southwest,United Airlines, andAmerican Airlines from Oklahoma City to Illinois to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
7.5
Overall
8.0
Boarding
8.1
Food
7.0
Crew
8.6
Comfort
8.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Entertainment
7.5
Overall
8.0
Boarding
8.1
Food
7.0
Crew
8.6
Comfort
8.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Entertainment
7.5
Overall
8.0
Boarding
8.1
Food
7.0
Crew
8.6
Comfort
8.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Entertainment
7.5
Overall
8.0
Boarding
8.1
Food
7.0
Crew
8.6
Comfort
8.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Entertainment
7.5
Overall
8.0
Boarding
8.1
Food
7.0
Crew
8.6
Comfort
8.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Related info for your journey
Find useful and relevant information for your journey from Oklahoma City 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 Oklahoma City to Illinois
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Complete your trip
Complete your trip to Illinois by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Oklahoma City to Illinois by cabin class
Find flights from Oklahoma City to Illinois, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Oklahoma City and Illinois flights
Browse other Oklahoma City and Illinois flight options. Last updated on September 6, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Oklahoma City to Illinois flights
Consider these flights traveling from Oklahoma City to Illinois.
Top 4 airlines flying from Oklahoma City to Illinois
Discover the top 4 airlines that operate flights from Oklahoma City 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 September 6, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$138 | Average$166 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$237 | Average$383 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$240 | Average$457 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$248 | Average$450 | FlexibilityNo cancel fee | On-time71% |