$78+ Cheap flights from Oklahoma 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 12/16. Fares are subject to change and may not be available on all flights or dates of travel.
OKC — ORD
Nov 29 — Dec 61
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Oklahoma 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
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 Oklahoma to Illinois
Cheapest
Best
Last-minute
One-way
Cheapest flights from Oklahoma to IllinoisExplore the most affordable flight options available from Oklahoma to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 30, 2026.
Explore the most affordable flight options available from Oklahoma to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 30, 2026.
This Kiwi.com deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/28:29 pm -
1 stop28h 24m
Mon 12/147:25 am -
1 stop12h 08m
Deal found 10/25![Frontier logo]()
$132
This Kiwi.com deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/58:29 pm -
1 stop28h 25m
Wed 12/97:25 am -
1 stop12h 08m
Deal found 10/27![Frontier logo]()
$140
This Kiwi.com deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/258:29 pm -
1 stop28h 24m
Wed 12/27:00 am -
1 stop12h 29m
Deal found 10/25![Frontier logo]()
$146
This Kiwi.com deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/48:29 pm -
1 stop28h 25m
Mon 12/77:25 am -
1 stop12h 08m
Deal found 10/25![Frontier logo]()
$190
This Kiwi.com deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/108:29 pm -
1 stop28h 25m
Mon 12/147:25 am -
1 stop12h 08m
Deal found 10/26![Frontier logo]()
$192
This CheapOair deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/138:19 pm -
1 stop28h 02m
Sun 11/156:30 am -
1 stop12h 54m
Deal found 10/25![Frontier logo]()
$201
This Kiwi.com deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/118:29 pm -
1 stop28h 25m
Mon 12/147:25 am -
1 stop12h 08m
Deal found 10/29![Frontier logo]()
$202
This Kiwi.com deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/58:29 pm -
2 stops14h 03m
Tue 12/87:25 am -
1 stop12h 08m
Deal found 10/27![Frontier logo]()
$204
This Mytrip deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/128:29 pm -
2 stops28h 39m
Tue 12/157:25 am -
1 stop12h 08m
Deal found 10/26![Frontier logo]()
$206
This Southwest deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/193:05 pm -
Nonstop1h 55m
Mon 11/239:25 pm -
Nonstop2h 05m
Deal found 10/27![Southwest logo]()
$243
This United Airlines deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/1410:15 am -
Nonstop2h 10m
Wed 12/1612:55 pm -
Nonstop2h 14m
Deal found 10/27![United Airlines logo]()
$243
This Southwest deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/265:10 am -
Nonstop1h 40m
Thu 12/37:05 am -
1 stop4h 10m
Deal found 10/28![Southwest logo]()
$249
Best flights from Oklahoma to IllinoisDiscover carefully curated flight deals from Oklahoma to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 30, 2026.
Discover carefully curated flight deals from Oklahoma to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 30, 2026.
This Southwest deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/145:30 am -
Nonstop1h 45m
Wed 12/167:05 am -
1 stop4h 10m
Deal found 10/27![Southwest logo]()
$249
This United Airlines deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/267:00 am -
Nonstop2h 18m
Thu 12/31:34 pm -
Nonstop2h 40m
Deal found 10/29![United Airlines logo]()
$259
This Delta deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/54:00 pm -
1 stop4h 53m
Tue 12/86:49 am -
1 stop5h 24m
Deal found 10/28![Delta logo]()
$263
This American Airlines deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/136:45 pm -
1 stop4h 32m
Sun 11/156:00 am -
1 stop4h 20m
Deal found 10/27![American Airlines logo]()
$349
This Southwest deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/512:40 pm -
Nonstop1h 55m
Thu 12/108:50 pm -
Nonstop2h 15m
Deal found 10/29![Southwest logo]()
$259
This United Airlines deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/127:00 am -
Nonstop2h 18m
Tue 12/159:25 am -
Nonstop2h 50m
Deal found 10/26![United Airlines logo]()
$259
This Delta deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1912:59 pm -
1 stop6h 06m
Mon 11/236:49 am -
1 stop5h 24m
Deal found 10/26![Delta logo]()
$263
This Southwest deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/105:20 am -
Nonstop2h 00m
Mon 12/145:25 pm -
1 stop5h 25m
Deal found 10/26![Southwest logo]()
$269
This Delta deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/146:00 am -
2 stops10h 50m
Wed 12/161:41 pm -
2 stops10h 14m
Deal found 10/30![Delta logo]()
$273
This United Airlines deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/2010:09 am -
Nonstop2h 20m
Wed 12/27:55 pm -
Nonstop2h 29m
Deal found 10/29![United Airlines logo]()
$279
This Southwest deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/195:30 am -
Nonstop1h 45m
Mon 11/236:30 pm -
1 stop5h 50m
Deal found 10/27![Southwest logo]()
$273
This Delta deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/25:21 am -
1 stop7h 03m
Sat 12/55:30 am -
1 stop5h 06m
Deal found 10/26![Delta logo]()
$279
This American Airlines deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/116:17 am -
1 stop4h 33m
Sun 11/156:00 am -
1 stop4h 20m
Deal found 10/27![American Airlines logo]()
$349
This United Airlines deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/47:15 am -
Nonstop2h 04m
Mon 12/77:45 pm -
Nonstop2h 11m
Deal found 10/26![United Airlines logo]()
$297
This Southwest deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/115:00 am -
Nonstop1h 55m
Mon 12/148:50 pm -
Nonstop2h 15m
Deal found 10/29![Southwest logo]()
$279
This American Airlines deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/137:29 pm -
1 stop4h 38m
Tue 11/1711:20 am -
2 stops8h 03m
Deal found 10/28![American Airlines logo]()
$354
This United Airlines deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/187:15 am -
Nonstop2h 02m
Fri 2/198:46 am -
Nonstop2h 25m
Deal found 10/29![United Airlines logo]()
$297
This Southwest deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/174:00 pm -
Nonstop1h 55m
Sat 12/199:25 pm -
Nonstop2h 20m
Deal found 10/26![Southwest logo]()
$288
This Delta deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/610:15 am -
2 stops10h 17m
Sat 1/95:25 pm -
1 stop5h 21m
Deal found 10/28![Delta logo]()
$322
This American Airlines deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/42:53 pm -
2 stops9h 10m
Wed 12/94:04 pm -
1 stop6h 52m
Deal found 10/25![American Airlines logo]()
$364
This Southwest deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/47:05 am -
2 stops10h 00m
Mon 12/76:05 am -
1 stop7h 50m
Deal found 10/26![Southwest logo]()
$288
This United Airlines deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/217:00 am -
Nonstop2h 18m
Wed 11/251:30 pm -
Nonstop2h 40m
Deal found 10/25![United Airlines logo]()
$317
This Delta deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/256:01 am -
2 stops10h 25m
Wed 1/277:00 am -
2 stops9h 48m
Deal found 10/29![Delta logo]()
$327
This American Airlines deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/136:00 am -
1 stop4h 59m
Tue 11/1711:33 am -
1 stop6h 45m
Deal found 10/29![American Airlines logo]()
$369
This United Airlines deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/251:27 pm -
Nonstop2h 16m
Tue 12/291:30 pm -
Nonstop2h 42m
Deal found 10/28![United Airlines logo]()
$317
This Southwest deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/235:00 am -
Nonstop1h 45m
Tue 11/246:00 am -
1 stop6h 55m
Deal found 10/28![Southwest logo]()
$290
This Delta deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/105:21 am -
1 stop5h 07m
Sun 12/136:00 am -
1 stop6h 39m
Deal found 10/29![Delta logo]()
$328
This United Airlines deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/171:19 pm -
Nonstop2h 19m
Wed 11/181:30 pm -
Nonstop2h 40m
Deal found 10/25![United Airlines logo]()
$317
This Southwest deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/205:35 am -
Nonstop1h 45m
Sat 1/2310:05 am -
Nonstop1h 55m
Deal found 10/28![Southwest logo]()
$297
This Delta deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/45:21 am -
1 stop6h 03m
Wed 12/94:29 pm -
1 stop7h 34m
Deal found 10/25![Delta logo]()
$359
Last-minute flights from Oklahoma to IllinoisDiscover last-minute flight deals from Oklahoma to Illinois. Data last updated October 30, 2026 and is based on user searches.
Discover last-minute flight deals from Oklahoma to Illinois. Data last updated October 30, 2026 and is based on user searches.
This Southwest deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/187:45 am -
1 stop5h 10m
Fri 11/209:25 pm -
Nonstop2h 05m
Deal found 10/28![Southwest logo]()
$273
This Southwest deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/193:05 pm -
Nonstop1h 55m
Mon 11/239:25 pm -
Nonstop2h 05m
Deal found 10/27![Southwest logo]()
$243
This United Airlines deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/197:00 am -
Nonstop2h 06m
Mon 11/239:29 pm -
Nonstop2h 07m
Deal found 10/28![United Airlines logo]()
$243
This American Airlines deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/197:48 pm -
Nonstop2h 12m
Sat 11/217:15 pm -
Nonstop2h 15m
Deal found 10/29![American Airlines logo]()
$252
This Southwest deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/193:45 pm -
Nonstop2h 00m
Mon 11/239:25 pm -
Nonstop2h 20m
Deal found 10/26![Southwest logo]()
$259
This Delta deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/198:00 am -
1 stop10h 05m
Mon 11/238:04 am -
1 stop7h 54m
Deal found 10/28![Delta logo]()
$263
This American Airlines deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/217:48 pm -
Nonstop2h 12m
Mon 11/237:04 pm -
1 stop4h 54m
Deal found 10/28![American Airlines logo]()
$262
This Southwest deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/217:05 pm -
1 stop5h 25m
Wed 11/259:45 pm -
Nonstop2h 25m
Deal found 10/29![Southwest logo]()
$269
This American Airlines deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/2312:34 pm -
1 stop7h 29m
Tue 11/244:56 pm -
Nonstop2h 22m
Deal found 10/28![American Airlines logo]()
$253
This American Airlines deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/234:21 pm -
1 stop6h 04m
Wed 11/255:00 am -
1 stop5h 08m
Deal found 10/29![American Airlines logo]()
$273
This Southwest deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/265:10 am -
Nonstop1h 40m
Thu 12/37:05 am -
1 stop4h 10m
Deal found 10/28![Southwest logo]()
$249
This Delta deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/263:00 pm -
1 stop7h 54m
Sat 12/54:08 pm -
1 stop6h 27m
Deal found 10/29![Delta logo]()
$263
One-way flights from Oklahoma to IllinoisSearch for one-way flight options from Oklahoma to Illinois. Find affordable one-way fares based on user searches. Data last updated October 30, 2026.
Search for one-way flight options from Oklahoma to Illinois. Find affordable one-way fares based on user searches. Data last updated October 30, 2026.
This Trip.com deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/168:29 pm -
1 stop27h 57m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/27![Frontier logo]()
$78
This Kiwi.com deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/198:29 pm -
1 stop27h 57m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/27![Frontier logo]()
$80
This Kiwi.com deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/88:29 pm -
1 stop28h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/27![Frontier logo]()
$82
This CheapOair deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/178:19 pm -
1 stop28h 02m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/25![Frontier logo]()
$91
This Kiwi.com deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/38:29 pm -
1 stop28h 24m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/29![Frontier logo]()
$108
This CheapOair deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/238:29 pm -
1 stop27h 57m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/26![Frontier logo]()
$113
This Southwest deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/215:05 am -
Nonstop1h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/29![Southwest logo]()
$122
This American Airlines deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/195:43 pm -
Nonstop2h 19m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/28![American Airlines logo]()
$122
This Southwest deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/33:30 pm -
Nonstop1h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/29![Southwest logo]()
$130
This Delta deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/1212:59 pm -
2 stops7h 16m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/29![Delta logo]()
$137
This Delta deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/35:25 pm -
1 stop5h 29m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/29![Delta logo]()
$140
This Southwest deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/275:00 am -
Nonstop1h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/28![Southwest logo]()
$142
Find flight deals from Oklahoma to Illinois
Keep the following information in mind while searching for Oklahoma to Illinois flight deals. Data was last updated October 30, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $132 (Kiwi.com) |
One-way from | $78 (Trip.com) |
Popular in | June |
Cheapest in | August |
Average price | $402 |
Good round-trip deal | $324 or less |
Good one-way deal | $182 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Oklahoma to Illinois that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated October 30, 2026.
Use the filters below to find and compare flights from Oklahoma to Illinois that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Oklahoma CityChicago
OKC Oklahoma City Will Rogers World - ORD Chicago O'Hare Intl
OKCORD
Oklahoma City Will Rogers World
Wed 12/16
8:29 pm-12:26 am
1 stop27h 57m
Chicago O'Hare Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$99
Oklahoma CityChicago
OKC Oklahoma City Will Rogers World - ORD Chicago O'Hare Intl
OKCORD
Oklahoma City Will Rogers World
Wed 12/23
8:29 pm-12:26 am
1 stop27h 57m
Chicago O'Hare Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$113
Quickest round-trip
TulsaChicago
TUL Tulsa - MDW Chicago Midway
TULMDW
Tulsa
Tue 11/24
4:05 pm-5:50 pm
Nonstop1h 45m
Chicago Midway
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$122
TulsaChicago
TUL Tulsa - ORD Chicago O'Hare Intl
TULORD
Tulsa
Thu 11/19
6:09 am-8:20 am
Nonstop2h 11m
Chicago O'Hare Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$122
TulsaChicago
TUL Tulsa - MDW Chicago Midway
TULMDW
Tulsa
Sat 11/21
5:05 am-6:50 am
Nonstop1h 45m
Chicago Midway
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$122
Oklahoma CityChicago
OKC Oklahoma City Will Rogers World - ORD Chicago O'Hare Intl
OKCORD
Oklahoma City Will Rogers World
Tue 11/10
8:19 pm-12:21 am
1 stop28h 02m
Chicago O'Hare Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$129
Oklahoma CityChicago
OKC Oklahoma City Will Rogers World - ORD Chicago O'Hare Intl
OKCORD
Oklahoma City Will Rogers World
Wed 12/16
2:15 pm-4:35 pm
Nonstop2h 20m
Chicago O'Hare Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$130
TulsaChicago
TUL Tulsa - ORD Chicago O'Hare Intl
TULORD
Tulsa
Sat 12/12
12:59 pm-8:15 pm
2 stops7h 16m
Chicago O'Hare Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$137
Oklahoma CityChicago
OKC Oklahoma City Will Rogers World - MDW Chicago Midway
OKCMDW
Oklahoma City Will Rogers World
Thu 12/3
5:25 pm-10:54 pm
1 stop5h 29m
Chicago Midway
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$140
Oklahoma CityChicago
OKC Oklahoma City Will Rogers World - MDW Chicago Midway
OKCMDW
Oklahoma City Will Rogers World
Tue 12/8
10:55 am-5:05 pm
2 stops6h 10m
Chicago Midway
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$140
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Oklahoma to Illinois
Have a flexible travel schedule? Discover the best time to fly to Illinois from Oklahoma with our price prediction graph.
OKC-ORD
TUL-MDW
TUL-ORD
OKC-MDW
OKC-PIA
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 to Illinois
USOK-USIL
OKC-ORD
TUL-MDW
TUL-ORD
OKC-MDW
What is the cheapest month to book a flight from Oklahoma to Illinois?
Currently, April is the cheapest month in which you can book a flight from Oklahoma to Illinois (average of $349). Flying from Oklahoma to Illinois in July is currently the most expensive (average of $443). 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 OK to IL?
Find hourly flight availability from Oklahoma to Illinois. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 30, 2026.
A simple way to save on the total cost of your ticket is to fly from Oklahoma to Illinois in the morning. If you’re flexible enough to do this you can expect to save up to 23% on your trip compared to booking a flight at noon.
How much does it cost to fly round-trip from Oklahoma to Illinois?
Airfare is below average for this route at the moment.
Oklahoma to Illinois flights typically cost between $370 and $539 in December.The cheapest round-trip price found within the last 5 days was $132 on Frontier (Dec 2-Dec 14).
How far ahead should I book a flight from Oklahoma to Illinois?
To ensure you get the cheapest price possible for a flight from Oklahoma to Illinois, you should look to book at least 77 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
What is the cheapest day to fly from Oklahoma to Illinois?
Use this chart to determine the cheapest time to fly round-trip from Oklahoma to Illinois. Price data was last updated on October 24, 2026.
Travelers seeking maximum savings on their Oklahoma to Illinois flight should consider departing on Monday at noon when fares are most often at their lowest. Tuesday 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 October 30, 2026.
See what other customers who have flown with Southwest,United Airlines, andAmerican Airlines from Oklahoma to Illinois have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.6
Overall
7.9
Entertainment
7.4
Comfort
8.0
Boarding
8.1
Food
7.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Crew
8.6
Overall
7.9
Entertainment
7.4
Comfort
8.0
Boarding
8.1
Food
7.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Crew
8.6
Overall
7.9
Entertainment
7.4
Comfort
8.0
Boarding
8.1
Food
7.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Crew
8.6
Overall
7.9
Entertainment
7.4
Comfort
8.0
Boarding
8.1
Food
7.0
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 to Illinois. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
Other flight options
Popular flights
Return Flight Options
Top destinations
Alternative routes for Oklahoma 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 Oklahoma to Illinois by cabin class
Find flights from Oklahoma to Illinois, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Oklahoma and Illinois flights
Browse other Oklahoma and Illinois flight options. Last updated on October 30, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Find a return flight route from Illinois
Find the right flight back to Oklahoma after your stay in Illinois
Oklahoma to Illinois flights
Consider these flights traveling from Oklahoma to Illinois.
Top 3 airlines flying from Oklahoma to Illinois
Discover the top 3 airlines that operate flights from Oklahoma to Illinois. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated October 30, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$177 | Average$400 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$196 | Average$431 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$231 | Average$408 | FlexibilityNo cancel fee | On-time63% |