$89+ Cheap flights from Illinois to Oklahoma City (OKC)
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 10/7. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — OKC
Oct 19 — Oct 261
Round-trip
1 adult, Economy
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Find cheap flights from Illinois to Oklahoma City 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
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Illinois to Oklahoma City
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Cheapest flights from Illinois to Oklahoma CityExplore the most affordable flight options available from Illinois to Oklahoma City. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 19, 2026.
Explore the most affordable flight options available from Illinois to Oklahoma City. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 19, 2026.
This Frontier deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/27:59 pm -
1 stop23h 25m
Tue 11/108:19 pm -
1 stop19h 04m
Deal found 9/17![Frontier logo]()
$195
This Kiwi.com deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” 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 10/196:35 pm -
2 stops25h 07m
Fri 10/238:27 pm -
1 stop22h 30m
Deal found 9/18![Frontier logo]()
$238
This CheapOair deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/176:30 am -
1 stop12h 54m
Thu 11/196:44 pm -
1 stop10h 29m
Deal found 9/17![Frontier logo]()
$252
This CheapOair deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/36:30 am -
1 stop12h 54m
Sat 11/78:19 pm -
1 stop28h 02m
Deal found 9/18![Frontier logo]()
$254
This Southwest deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” 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 10/266:25 pm -
1 stop5h 30m
Wed 10/284:05 pm -
1 stop6h 15m
Deal found 9/17![Southwest logo]()
$254
This Kiwi.com deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/56:30 am -
1 stop12h 54m
Mon 11/98:19 pm -
1 stop28h 02m
Deal found 9/15![Frontier logo]()
$255
This United Airlines deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” 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 11/39:25 pm -
Nonstop2h 29m
Sat 11/77:00 am -
Nonstop2h 18m
Deal found 9/16![United Airlines logo]()
$257
This Southwest deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/138:55 pm -
Nonstop2h 10m
Tue 10/203:05 pm -
Nonstop1h 55m
Deal found 9/15![Southwest logo]()
$257
This American Airlines deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1811:45 am -
Nonstop2h 29m
Wed 11/251:08 pm -
Nonstop2h 22m
Deal found 9/14![American Airlines logo]()
$258
This Trip.com deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” 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 10/198:00 pm -
1 stop23h 42m
Thu 10/228:27 pm -
1 stop22h 48m
Deal found 9/18![Frontier logo]()
$258
This Southwest deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1110:15 am -
Nonstop2h 10m
Sat 11/1412:40 pm -
Nonstop1h 55m
Deal found 9/14![Southwest logo]()
$258
This CheapOair deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” 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 10/306:30 am -
1 stop12h 54m
Mon 11/28:19 pm -
1 stop28h 02m
Deal found 9/18![Frontier logo]()
$259
Best flights from Illinois to Oklahoma CityDiscover carefully curated flight deals from Illinois to Oklahoma City that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 19, 2026.
Discover carefully curated flight deals from Illinois to Oklahoma City that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 19, 2026.
This Southwest deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” 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 10/266:25 pm -
1 stop5h 30m
Wed 10/284:05 pm -
1 stop6h 15m
Deal found 9/17![Southwest logo]()
$254
This United Airlines deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/29:25 am -
Nonstop2h 50m
Sat 12/510:00 am -
Nonstop2h 20m
Deal found 9/14![United Airlines logo]()
$257
This Delta deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/105:27 am -
1 stop5h 48m
Sat 10/104:00 pm -
1 stop7h 57m
Deal found 9/15![Delta logo]()
$277
This CheapOair deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” 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 10/168:00 pm -
1 stop23h 32m
Fri 10/238:27 pm -
1 stop22h 30m
Deal found 9/18![Frontier logo]()
$307
This American Airlines deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” 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 1/11:51 pm -
1 stop6h 18m
Tue 1/58:40 am -
1 stop4h 39m
Deal found 9/19![American Airlines logo]()
$331
This Southwest deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/210:15 am -
Nonstop2h 10m
Sat 12/57:00 am -
2 stops10h 05m
Deal found 9/14![Southwest logo]()
$273
This Southwest deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/116:05 am -
1 stop7h 15m
Sat 11/147:00 am -
2 stops10h 05m
Deal found 9/14![Southwest logo]()
$283
This United Airlines deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/118:30 am -
1 stop5h 24m
Thu 11/125:00 am -
1 stop5h 02m
Deal found 9/14![United Airlines logo]()
$324
This American Airlines deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” 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 10/34:43 pm -
1 stop4h 22m
Wed 10/77:20 pm -
1 stop4h 50m
Deal found 9/16![American Airlines logo]()
$354
This Southwest deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” 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 10/2410:30 am -
Nonstop2h 05m
Tue 10/273:05 pm -
Nonstop1h 55m
Deal found 9/18![Southwest logo]()
$297
This Delta deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/294:32 pm -
1 stop6h 24m
Sat 10/37:17 am -
2 stops8h 28m
Deal found 9/14![Delta logo]()
$374
This United Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/89:16 am -
Nonstop2h 38m
Sat 10/105:49 pm -
Nonstop2h 31m
Deal found 9/15![United Airlines logo]()
$356
This American Airlines deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/291:19 pm -
1 stop7h 03m
Sat 10/37:10 pm -
1 stop4h 53m
Deal found 9/14![American Airlines logo]()
$369
This Southwest deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2910:25 pm -
Nonstop2h 10m
Mon 11/25:05 am -
Nonstop1h 55m
Deal found 9/14![Southwest logo]()
$320
This Delta deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/305:09 pm -
1 stop6h 49m
Sun 11/17:25 am -
1 stop4h 22m
Deal found 9/15![Delta logo]()
$408
This United Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/301:30 pm -
Nonstop2h 40m
Sun 11/17:00 am -
Nonstop2h 18m
Deal found 9/15![United Airlines logo]()
$388
This Southwest deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/36:20 am -
1 stop6h 05m
Sun 12/611:20 am -
1 stop9h 05m
Deal found 9/14![Southwest logo]()
$340
This United Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/91:30 pm -
Nonstop2h 30m
Sun 10/111:17 pm -
Nonstop2h 26m
Deal found 9/15![United Airlines logo]()
$399
This Southwest deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/1310:20 am -
2 stops8h 10m
Thu 10/157:20 pm -
1 stop4h 30m
Deal found 9/15![Southwest logo]()
$343
This United Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/316:15 am -
1 stop6h 31m
Sat 1/97:00 am -
1 stop7h 00m
Deal found 9/15![United Airlines logo]()
$414
This Southwest deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/158:30 am -
2 stops7h 20m
Mon 10/196:10 pm -
1 stop4h 40m
Deal found 9/15![Southwest logo]()
$345
This United Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/153:41 pm -
1 stop6h 50m
Mon 10/195:49 pm -
1 stop5h 09m
Deal found 9/15![United Airlines logo]()
$414
This Southwest deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” 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 11/132:05 pm -
2 stops8h 25m
Mon 11/161:00 pm -
2 stops9h 10m
Deal found 9/18![Southwest logo]()
$349
This Delta deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/264:26 pm -
1 stop6h 34m
Thu 10/295:23 pm -
1 stop5h 13m
Deal found 9/14![Delta logo]()
$567
This American Airlines deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/262:30 pm -
2 stops8h 05m
Thu 10/295:00 am -
2 stops8h 57m
Deal found 9/14![American Airlines logo]()
$577
This United Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/249:25 pm -
Nonstop2h 29m
Sun 11/297:00 am -
Nonstop2h 18m
Deal found 9/15![United Airlines logo]()
$426
This Southwest deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/307:45 am -
2 stops8h 05m
Mon 11/210:50 am -
2 stops6h 55m
Deal found 9/15![Southwest logo]()
$358
This Delta deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” 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 10/239:59 am -
2 stops10h 31m
Mon 10/265:23 pm -
1 stop6h 34m
Deal found 9/18![Delta logo]()
$593
This American Airlines deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” 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 10/176:00 am -
1 stop6h 10m
Fri 10/233:14 pm -
1 stop6h 49m
Deal found 9/17![American Airlines logo]()
$605
This Southwest deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” 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 11/16:30 pm -
1 stop6h 05m
Sat 11/77:00 am -
2 stops10h 05m
Deal found 9/16![Southwest logo]()
$375
Last-minute flights from Illinois to Oklahoma CityDiscover last-minute flight deals from Illinois to Oklahoma City. Data last updated September 19, 2026 and is based on user searches.
Discover last-minute flight deals from Illinois to Oklahoma City. Data last updated September 19, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/79:40 am -
Nonstop2h 30m
Tue 10/201:37 pm -
Nonstop2h 22m
Deal found 9/15![American Airlines logo]()
$257
This Kissandfly.com deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/108:10 pm -
Nonstop2h 21m
Mon 10/128:27 pm -
1 stop27h 57m
Deal found 9/17![Frontier logo]()
$267
This Southwest deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/138:55 pm -
Nonstop2h 10m
Tue 10/203:05 pm -
Nonstop1h 55m
Deal found 9/15![Southwest logo]()
$257
This United Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/138:35 am -
1 stop5h 21m
Thu 10/157:15 am -
1 stop4h 58m
Deal found 9/15![United Airlines logo]()
$270
This Trip.com deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” 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 10/146:30 am -
1 stop13h 12m
Sat 10/178:27 pm -
1 stop27h 57m
Deal found 9/17![Frontier logo]()
$262
This American Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/155:40 am -
1 stop4h 35m
Mon 10/197:00 pm -
1 stop4h 42m
Deal found 9/15![American Airlines logo]()
$269
This Kiwi.com deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates ” 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 10/196:35 pm -
2 stops25h 07m
Fri 10/238:27 pm -
1 stop22h 30m
Deal found 9/18![Frontier logo]()
$238
This Trip.com deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” 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 10/198:00 pm -
1 stop23h 42m
Thu 10/228:27 pm -
1 stop22h 48m
Deal found 9/18![Frontier logo]()
$258
This CheapOair deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/226:30 am -
1 stop13h 12m
Fri 10/238:27 pm -
1 stop27h 57m
Deal found 9/15![Frontier logo]()
$264
This Trip.com deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” 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.
Fri 10/236:30 am -
1 stop13h 12m
Mon 10/268:27 pm -
1 stop27h 54m
Deal found 9/18![Frontier logo]()
$266
This Southwest deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” 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 10/266:25 pm -
1 stop5h 30m
Wed 10/284:05 pm -
1 stop6h 15m
Deal found 9/17![Southwest logo]()
$254
This CheapOair deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” 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 10/306:30 am -
1 stop12h 54m
Mon 11/28:19 pm -
1 stop28h 02m
Deal found 9/18![Frontier logo]()
$259
One-way flights from Illinois to Oklahoma CitySearch for one-way flight options from Illinois to Oklahoma City. Find affordable one-way fares based on user searches. Data last updated September 19, 2026.
Search for one-way flight options from Illinois to Oklahoma City. Find affordable one-way fares based on user searches. Data last updated September 19, 2026.
This Trip.com deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” 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 10/76:30 am -
1 stop13h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/17![Frontier logo]()
$89
This Kiwi.com deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” 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 10/136:30 am -
1 stop13h 12m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/16![Frontier logo]()
$90
This Kiwi.com deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” 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 11/176:30 am -
1 stop12h 54m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/17![Frontier logo]()
$91
This Kiwi.com deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” 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 12/157:25 am -
1 stop12h 08m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/19![Frontier logo]()
$92
This CheapOair deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” 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 10/206:30 am -
1 stop13h 12m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/17![Frontier logo]()
$96
This CheapOair deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/216:30 am -
1 stop13h 12m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/15![Frontier logo]()
$98
This Kiwi.com deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/116:30 am -
1 stop12h 54m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/15![Frontier logo]()
$102
This Kiwi.com deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” 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 11/186:30 am -
1 stop12h 54m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/17![Frontier logo]()
$105
This Kiwi.com deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/146:30 am -
1 stop12h 54m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/15![Frontier logo]()
$106
This CheapOair deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/96:30 am -
1 stop12h 54m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/19![Frontier logo]()
$111
This Delta deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/136:00 am -
1 stop4h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/14![Delta logo]()
$120
This Southwest deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” 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 10/2110:20 am -
2 stops8h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/17![Southwest logo]()
$125
Find flight deals from Illinois to Oklahoma City
Keep the following information in mind while searching for Illinois to Oklahoma City flight deals. Data was last updated September 19, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $195 (Frontier) |
One-way from | $89 (Trip.com) |
Popular in | August |
Cheapest in | September |
Average price | $331 |
Good round-trip deal | $352 or less |
Good one-way deal | $232 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Illinois to Oklahoma City 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 19, 2026.
Use the filters below to find and compare flights from Illinois to Oklahoma City that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
St. LouisOklahoma City
STL Lambert-St Louis - OKC Oklahoma City Will Rogers World
STLOKC
Lambert-St Louis
Wed 10/21
10:20 am-6:30 pm
2 stops8h 10m
Oklahoma City Will Rogers World
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$125
ChicagoOklahoma City
ORD Chicago O'Hare Intl - OKC Oklahoma City Will Rogers World
ORDOKC
Chicago O'Hare Intl
Tue 10/13
8:10 pm-10:31 pm
Nonstop2h 21m
Oklahoma City Will Rogers World
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$129
ChicagoOklahoma City
ORD Chicago O'Hare Intl - OKC Oklahoma City Will Rogers World
ORDOKC
Chicago O'Hare Intl
Wed 10/14
8:10 pm-10:31 pm
Nonstop2h 21m
Oklahoma City Will Rogers World
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$129
Quickest round-trip
ChicagoOklahoma City
MDW Chicago Midway - OKC Oklahoma City Will Rogers World
MDWOKC
Chicago Midway
Sat 11/14
10:20 am-12:35 pm
Nonstop2h 15m
Oklahoma City Will Rogers World
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$129
ChicagoOklahoma City
ORD Chicago O'Hare Intl - OKC Oklahoma City Will Rogers World
ORDOKC
Chicago O'Hare Intl
Wed 10/14
5:27 am-12:31 pm
1 stop7h 04m
Oklahoma City Will Rogers World
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$139
ChicagoOklahoma City
ORD Chicago O'Hare Intl - OKC Oklahoma City Will Rogers World
ORDOKC
Chicago O'Hare Intl
Wed 12/16
6:15 pm-12:04 am
1 stop5h 49m
Oklahoma City Will Rogers World
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$139
ChicagoOklahoma City
ORD Chicago O'Hare Intl - OKC Oklahoma City Will Rogers World
ORDOKC
Chicago O'Hare Intl
Tue 10/13
3:30 pm-8:17 pm
1 stop4h 47m
Oklahoma City Will Rogers World
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$139
ChicagoOklahoma City
MDW Chicago Midway - OKC Oklahoma City Will Rogers World
MDWOKC
Chicago Midway
Sat 11/14
11:27 am-6:12 pm
1 stop6h 45m
Oklahoma City Will Rogers World
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$139
ChicagoOklahoma City
MDW Chicago Midway - OKC Oklahoma City Will Rogers World
MDWOKC
Chicago Midway
Wed 12/16
5:14 pm-12:04 am
1 stop6h 50m
Oklahoma City Will Rogers World
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$139
ChicagoOklahoma City
MDW Chicago Midway - OKC Oklahoma City Will Rogers World
MDWOKC
Chicago Midway
Tue 11/17
11:27 am-4:40 pm
1 stop5h 13m
Oklahoma City Will Rogers World
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$139
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Illinois to Oklahoma City
Have a flexible travel schedule? Discover the best time to fly to Oklahoma City from Illinois with our price prediction graph.
STL-OKC
ORD-OKC
MDW-OKC
PIA-OKC
BMI-OKC
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Illinois to Oklahoma City
USIL-OKC
STL-OKC
ORD-OKC
MDW-OKC
PIA-OKC
What is the cheapest month to book a flight from Illinois to Oklahoma City?
Currently, January is the cheapest month in which you can book a flight from Illinois to Oklahoma City (average of $340). Flying from Illinois to Oklahoma City in July is currently the most expensive (average of $495). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from IL to OKC?
Find hourly flight availability from Illinois to Oklahoma City. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 19, 2026.
When flying from Illinois to Oklahoma City, the time of day you fly usually plays a role in the price. Save by searching for a flight at noon, which can drop the price by up to 15% versus a flight in the evening.
Weekly flight availability from Illinois to Oklahoma City
Explore weekly flight availability from Illinois to Oklahoma City. 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 19, 2026.
The most flights from USIL to OKC are scheduled on a Friday (25 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (12 on average).
How much does it cost to fly round-trip from Illinois to Oklahoma City?
Airfare is below average for this route at the moment.
Illinois to Oklahoma City flights typically cost between $293 and $483 in November.The cheapest round-trip price found within the last 5 days was $252 on Frontier (Nov 17-Nov 19).
How far ahead should I book a flight from Illinois to Oklahoma City?
Booking 51 days in advance of your planned departure date is, on average, the best time to get cheap flights from Illinois to Oklahoma City. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
What is the cheapest day to fly from Illinois to Oklahoma City?
Use this chart to determine the cheapest time to fly round-trip from Illinois to Oklahoma City. Price data was last updated on September 19, 2026.
Travelers seeking maximum savings on their Illinois to Oklahoma City flight should consider departing on Saturday evenings when fares are most often at their lowest. Monday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.
Related info for your journey
Find useful and relevant information for your journey from Illinois to Oklahoma City. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Oklahoma City?
Book flights to Oklahoma City if you plan to visit one of these locationsMoore
Norman
Edmond
Shawnee
Midwest City
Ada
Browse thousands of different options on Cheapflights for your next trip
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Alternative routes for Illinois to Oklahoma City
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Complete your trip
Complete your trip to Oklahoma City by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Illinois to Oklahoma City by cabin class
Find flights from Illinois to Oklahoma City, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Other flights to Oklahoma City
Explore flights to Oklahoma City departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 19, 2026.
Illinois and Oklahoma City flights
Browse other Illinois and Oklahoma City flight options. Last updated on September 19, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Illinois to Oklahoma City flights
Consider these flights traveling from Illinois to Oklahoma City.
Top 4 airlines flying from Illinois to Oklahoma City
Discover the top 4 airlines that operate flights from Illinois to Oklahoma City. 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 19, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$81 | Average$252 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$201 | Average$417 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$237 | Average$459 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$294 | Average$373 | FlexibilityNo cancel fee | On-time63% |