$48+ Cheap flights from Oklahoma to Illinois
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/16. Fares are subject to change and may not be available on all flights or dates of travel.
OKC — ORD
Apr 14 — Apr 211
Round-trip
1 adult, Economy
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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 March 15, 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 March 15, 2026.
This CheapOair deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” 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.
Sat 5/98:15 am
DFW
- ORD
Nonstop2h 45m
Multiple Airlines
Tue 5/124:03 pm
ORD
- DFW
Nonstop2h 35m
Multiple Airlines
Deal found 3/13![Multiple Airlines logo]()
$86
This Kiwi.com deal was found by Cheapflights users on 3/12. Clicking the “Pick Dates” 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 4/155:45 am
DFW
- ORD
Nonstop2h 20m
Spirit Airlines
Fri 4/179:44 pm
ORD
- DFW
Nonstop2h 37m
Spirit Airlines
Deal found 3/12![Spirit Airlines logo]()
$87
This Super.com deal was found by Cheapflights users on 3/15. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/1211:55 am
DFW
- MDW
Nonstop2h 17m
Frontier
Tue 5/193:07 pm
MDW
- DFW
Nonstop2h 43m
Frontier
Deal found 3/15![Frontier logo]()
$87
This Frontier deal was found by Cheapflights users on 3/14. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/2511:30 am
DFW
- ORD
Nonstop2h 37m
Frontier
Tue 4/285:57 pm
ORD
- DFW
Nonstop3h 00m
Frontier
Deal found 3/14![Frontier logo]()
$88
This Frontier deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” 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.
Wed 5/611:55 am
DFW
- MDW
Nonstop2h 17m
Frontier
Sat 5/93:07 pm
MDW
- DFW
Nonstop2h 43m
Frontier
Deal found 3/13![Frontier logo]()
$88
This Expedia deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/2310:17 pm
DFW
- ORD
Nonstop2h 35m
Frontier
Sat 4/253:23 pm
ORD
- DFW
Nonstop3h 04m
Frontier
Deal found 3/10![Frontier logo]()
$89
This Kiwi.com deal was found by Cheapflights users on 3/11. Clicking the “Pick Dates” 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 5/17:17 pm
DFW
- MDW
Nonstop2h 20m
Frontier
Tue 5/53:07 pm
MDW
- DFW
Nonstop2h 43m
Frontier
Deal found 3/11![Frontier logo]()
$89
This Kiwi.com deal was found by Cheapflights users on 3/12. Clicking the “Pick Dates” 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 4/2010:24 pm
DFW
- ORD
Nonstop2h 35m
Frontier
Wed 4/223:27 pm
ORD
- DFW
Nonstop3h 04m
Frontier
Deal found 3/12![Frontier logo]()
$90
This Frontier deal was found by Cheapflights users on 3/12. Clicking the “Pick Dates” 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.
Thu 4/168:04 pm
DFW
- MDW
Nonstop2h 18m
Frontier
Mon 4/204:14 pm
MDW
- DFW
Nonstop2h 54m
Frontier
Deal found 3/12![Frontier logo]()
$90
This CheapOair deal was found by Cheapflights users on 3/15. 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 4/168:45 am
DFW
- ORD
Nonstop2h 36m
Multiple Airlines
Mon 4/209:44 pm
ORD
- DFW
Nonstop2h 37m
Multiple Airlines
Deal found 3/15![Multiple Airlines logo]()
$91
This Frontier deal was found by Cheapflights users on 3/15. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/110:17 pm
DFW
- ORD
Nonstop2h 35m
Frontier
Sat 5/210:23 am
ORD
- DFW
Nonstop2h 56m
Frontier
Deal found 3/15![Frontier logo]()
$92
This Frontier deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” 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.
Thu 4/238:04 pm
DFW
- MDW
Nonstop2h 18m
Frontier
Mon 4/276:20 am
MDW
- DFW
Nonstop2h 49m
Frontier
Deal found 3/10![Frontier logo]()
$92
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 March 15, 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 March 15, 2026.
This United Airlines deal was found by Cheapflights users on 3/11. Clicking the “Pick Dates” 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 6/57:22 pm
DFW
- ORD
Nonstop2h 43m
United Airlines
Tue 6/96:10 am
ORD
- DFW
Nonstop2h 35m
United Airlines
Deal found 3/11![United Airlines logo]()
$211
This Delta deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” 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 5/235:20 am
DFW
- MDW
1 stop7h 22m
Delta
Tue 5/266:36 pm
MDW
- DFW
1 stop4h 35m
Delta
Deal found 3/10![Delta logo]()
$216
This Southwest deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” 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 4/75:05 am
TUL
- MDW
Nonstop1h 45m
Southwest
Tue 4/149:05 pm
MDW
- TUL
Nonstop1h 55m
Southwest
Deal found 3/10![Southwest logo]()
$217
This American Airlines deal was found by Cheapflights users on 3/15. 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.
Sat 5/97:32 pm
TUL
- ORD
Nonstop2h 09m
American Airlines
Wed 5/139:00 pm
ORD
- TUL
Nonstop2h 10m
American Airlines
Deal found 3/15![American Airlines logo]()
$243
This Southwest deal was found by Cheapflights users on 3/12. Clicking the “Pick Dates” 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 5/125:05 am
TUL
- MDW
Nonstop1h 45m
Southwest
Tue 5/199:40 am
MDW
- TUL
Nonstop1h 55m
Southwest
Deal found 3/12![Southwest logo]()
$217
This Delta deal was found by Cheapflights users on 3/12. Clicking the “Pick Dates” 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 6/27:00 am
DFW
- MDW
1 stop6h 19m
Delta
Sat 6/66:36 pm
MDW
- DFW
1 stop4h 35m
Delta
Deal found 3/12![Delta logo]()
$236
This United Airlines deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” 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.
Sun 9/67:22 pm
DFW
- ORD
Nonstop2h 36m
United Airlines
Fri 9/117:14 am
ORD
- DFW
Nonstop2h 40m
United Airlines
Deal found 3/10![United Airlines logo]()
$245
This Kiwi.com deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” 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.
Sun 5/175:18 am
DFW
- BMI
2 stops39h 08m
Multiple Airlines
Sun 5/248:14 pm
BMI
- DFW
1 stop11h 46m
Multiple Airlines
Deal found 3/10![Multiple Airlines logo]()
$501
This Delta deal was found by Cheapflights users on 3/14. 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 4/2111:37 am
DFW
- MDW
1 stop4h 49m
Delta
Wed 4/226:38 pm
MDW
- DFW
1 stop4h 46m
Delta
Deal found 3/14![Delta logo]()
$237
This Southwest deal was found by Cheapflights users on 3/14. 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 4/1510:45 am
TUL
- MDW
1 stop4h 40m
Southwest
Wed 4/159:05 pm
MDW
- TUL
Nonstop1h 55m
Southwest
Deal found 3/14![Southwest logo]()
$247
This United Airlines deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/177:46 am
XNA
- ORD
Nonstop2h 04m
United Airlines
Tue 4/217:52 pm
ORD
- XNA
Nonstop2h 12m
United Airlines
Deal found 3/10![United Airlines logo]()
$249
This Delta deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” 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 4/255:45 am
DFW
- MDW
1 stop6h 58m
Delta
Sat 4/256:38 pm
MDW
- DFW
1 stop4h 46m
Delta
Deal found 3/13![Delta logo]()
$237
This Southwest deal was found by Cheapflights users on 3/11. Clicking the “Pick Dates” 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 4/147:05 am
TUL
- ORD
2 stops7h 55m
Southwest
Wed 4/1510:30 am
ORD
- TUL
2 stops11h 20m
Southwest
Deal found 3/11![Southwest logo]()
$247
This Delta deal was found by Cheapflights users on 3/11. Clicking the “Pick Dates” 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 4/305:45 am
DFW
- MDW
1 stop6h 58m
Delta
Sun 5/36:38 pm
MDW
- DFW
1 stop4h 46m
Delta
Deal found 3/11![Delta logo]()
$239
This United Airlines deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/275:52 am
XNA
- ORD
Nonstop2h 08m
United Airlines
Sun 5/319:16 pm
ORD
- XNA
Nonstop2h 04m
United Airlines
Deal found 3/10![United Airlines logo]()
$263
This Southwest deal was found by Cheapflights users on 3/12. Clicking the “Pick Dates” 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 5/118:25 pm
TUL
- MDW
1 stop8h 35m
Southwest
Tue 5/192:35 pm
MDW
- TUL
2 stops8h 10m
Southwest
Deal found 3/12![Southwest logo]()
$256
This Delta deal was found by Cheapflights users on 3/12. Clicking the “Pick Dates” 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 6/31:29 pm
DFW
- MDW
1 stop5h 04m
Delta
Fri 6/56:36 pm
MDW
- DFW
1 stop4h 35m
Delta
Deal found 3/12![Delta logo]()
$251
This Southwest deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/17:05 am
TUL
- ORD
1 stop5h 45m
Southwest
Mon 4/63:50 pm
ORD
- TUL
2 stops7h 05m
Southwest
Deal found 3/10![Southwest logo]()
$256
This United Airlines deal was found by Cheapflights users on 3/12. Clicking the “Pick Dates” 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 5/29:50 am
TUL
- ORD
Nonstop2h 07m
United Airlines
Tue 5/512:44 pm
ORD
- TUL
Nonstop2h 13m
United Airlines
Deal found 3/12![United Airlines logo]()
$300
This Delta deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” 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 6/307:00 am
DFW
- ORD
1 stop4h 29m
Delta
Wed 7/87:10 am
ORD
- DFW
1 stop7h 12m
Delta
Deal found 3/13![Delta logo]()
$255
This Southwest deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” 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 4/2510:35 am
TUL
- MDW
2 stops7h 15m
Southwest
Wed 4/2910:05 am
MDW
- TUL
1 stop4h 30m
Southwest
Deal found 3/13![Southwest logo]()
$262
This Delta deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/311:51 pm
TUL
- ORD
1 stop7h 19m
Delta
Wed 4/17:10 am
ORD
- TUL
1 stop5h 56m
Delta
Deal found 3/10![Delta logo]()
$257
This United Airlines deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/225:25 pm
DFW
- STL
1 stop5h 03m
United Airlines
Thu 4/237:45 am
STL
- DFW
2 stops8h 29m
United Airlines
Deal found 3/10![United Airlines logo]()
$311
This Southwest deal was found by Cheapflights users on 3/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/105:10 am
TUL
- MDW
Nonstop1h 45m
Southwest
Sat 4/116:15 pm
MDW
- TUL
Nonstop1h 55m
Southwest
Deal found 3/11![Southwest logo]()
$276
This Delta deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” 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.
Sun 5/245:20 am
DFW
- MDW
1 stop7h 22m
Delta
Tue 5/266:36 pm
MDW
- DFW
1 stop4h 35m
Delta
Deal found 3/10![Delta logo]()
$258
This American Airlines deal was found by Cheapflights users on 3/14. 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.
Fri 5/221:50 pm
DFW
- BMI
Nonstop2h 02m
American Airlines
Sun 5/246:05 pm
BMI
- DFW
1 stop5h 40m
American Airlines
Deal found 3/14![American Airlines logo]()
$545
This Delta deal was found by Cheapflights users on 3/14. 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 6/15:20 am
DFW
- ORD
1 stop5h 09m
Delta
Mon 6/86:00 am
ORD
- DFW
1 stop6h 15m
Delta
Deal found 3/14![Delta logo]()
$261
This United Airlines deal was found by Cheapflights users on 3/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/174:38 pm
OKC
- ORD
Nonstop2h 19m
United Airlines
Tue 4/219:24 am
ORD
- OKC
Nonstop2h 39m
United Airlines
Deal found 3/12![United Airlines logo]()
$348
This Southwest deal was found by Cheapflights users on 3/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/226:35 am
TUL
- ORD
1 stop7h 20m
Southwest
Fri 4/241:35 pm
ORD
- TUL
1 stop9h 40m
Southwest
Deal found 3/12![Southwest logo]()
$292
This American Airlines deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” 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.
Sun 5/171:10 pm
DFW
- BMI
Nonstop2h 05m
American Airlines
Sun 5/246:48 am
BMI
- DFW
Nonstop2h 26m
American Airlines
Deal found 3/10![American Airlines logo]()
$555
Last-minute flights from Oklahoma to IllinoisDiscover last-minute flight deals from Oklahoma to Illinois. Data last updated March 15, 2026 and is based on user searches.
Discover last-minute flight deals from Oklahoma to Illinois. Data last updated March 15, 2026 and is based on user searches.
This Frontier deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” 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.
Sun 3/158:39 pm
DFW
- MDW
Nonstop2h 18m
Frontier
Sat 4/46:25 pm
MDW
- DFW
Nonstop2h 50m
Frontier
Deal found 3/10![Frontier logo]()
$107
This Frontier deal was found by Cheapflights users on 3/11. Clicking the “Pick Dates” 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.
Fri 3/209:01 pm
DFW
- ORD
Nonstop2h 33m
Frontier
Wed 4/81:39 pm
ORD
- DFW
Nonstop2h 53m
Frontier
Deal found 3/11![Frontier logo]()
$109
This Frontier deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” 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.
Fri 3/209:01 pm
DFW
- ORD
Nonstop2h 33m
Frontier
Sat 4/47:15 am
ORD
- DFW
Nonstop2h 55m
Frontier
Deal found 3/10![Frontier logo]()
$122
This Kiwi.com deal was found by Cheapflights users on 3/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/238:46 pm
DFW
- ORD
Nonstop2h 35m
Frontier
Tue 4/71:39 pm
ORD
- DFW
Nonstop2h 53m
Frontier
Deal found 3/11![Frontier logo]()
$108
This Gotogate deal was found by Cheapflights users on 3/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/237:20 am
DFW
- ORD
1 stop9h 36m
Multiple Airlines
Tue 4/71:39 pm
ORD
- DFW
Nonstop2h 53m
Multiple Airlines
Deal found 3/11![Multiple Airlines logo]()
$115
This Cheapflightsfares deal was found by Cheapflights users on 3/14. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/247:20 am
DFW
- ORD
1 stop12h 43m
Spirit Airlines
Sat 4/189:44 pm
ORD
- DFW
Nonstop2h 37m
Spirit Airlines
Deal found 3/14![Spirit Airlines logo]()
$118
This CheapOair deal was found by Cheapflights users on 3/14. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/247:35 am
DFW
- ORD
1 stop12h 16m
Spirit Airlines
Thu 4/169:44 pm
ORD
- DFW
Nonstop2h 37m
Spirit Airlines
Deal found 3/14![Spirit Airlines logo]()
$120
This Frontier deal was found by Cheapflights users on 3/15. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/138:55 pm
DFW
- MDW
Nonstop2h 18m
Frontier
Mon 4/204:14 pm
MDW
- DFW
Nonstop2h 54m
Frontier
Deal found 3/15![Frontier logo]()
$103
This Frontier deal was found by Cheapflights users on 3/12. Clicking the “Pick Dates” 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.
Thu 4/168:04 pm
DFW
- MDW
Nonstop2h 18m
Frontier
Mon 4/204:14 pm
MDW
- DFW
Nonstop2h 54m
Frontier
Deal found 3/12![Frontier logo]()
$90
This Mytrip deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/238:04 pm
DFW
- MDW
Nonstop2h 18m
Frontier
Mon 4/276:20 am
MDW
- DFW
Nonstop2h 49m
Frontier
Deal found 3/13![Frontier logo]()
$112
This Kiwi.com deal was found by Cheapflights users on 3/12. Clicking the “Pick Dates” 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 4/2710:09 am
DFW
- MDW
Nonstop2h 26m
Frontier
Thu 4/308:25 am
MDW
- DFW
Nonstop2h 49m
Frontier
Deal found 3/12![Frontier logo]()
$89
This Trip.com deal was found by Cheapflights users on 3/11. Clicking the “Pick Dates” 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 4/2710:09 am
DFW
- MDW
Nonstop2h 26m
Frontier
Fri 5/13:29 pm
MDW
- DFW
Nonstop2h 53m
Frontier
Deal found 3/11![Frontier logo]()
$109
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 March 15, 2026.
Search for one-way flight options from Oklahoma to Illinois. Find affordable one-way fares based on user searches. Data last updated March 15, 2026.
This Super.com deal was found by Cheapflights users on 3/15. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/168:45 am
DFW
- ORD
Nonstop2h 36m
Frontier
Deal found 3/15![Frontier logo]()
$48
This Super.com deal was found by Cheapflights users on 3/15. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/168:04 pm
DFW
- MDW
Nonstop2h 18m
Frontier
Deal found 3/15![Frontier logo]()
$48
This Kiwi.com deal was found by Cheapflights users on 3/12. Clicking the “Pick Dates” 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 5/127:30 am
DFW
- ORD
Nonstop2h 25m
Spirit Airlines
Deal found 3/12![Spirit Airlines logo]()
$49
This Kiwi.com deal was found by Cheapflights users on 3/11. Clicking the “Pick Dates” 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 6/135:43 pm
DFW
- MDW
Nonstop2h 23m
Frontier
Deal found 3/11![Frontier logo]()
$51
This Trip.com deal was found by Cheapflights users on 3/11. Clicking the “Pick Dates” 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 6/235:43 pm
DFW
- MDW
Nonstop2h 23m
Frontier
Deal found 3/11![Frontier logo]()
$52
This Frontier deal was found by Cheapflights users on 3/15. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/213:23 pm
DFW
- ORD
Nonstop2h 52m
Frontier
Deal found 3/15![Frontier logo]()
$53
This Frontier deal was found by Cheapflights users on 3/15. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/215:43 pm
DFW
- MDW
Nonstop2h 23m
Frontier
Deal found 3/15![Frontier logo]()
$53
This Super.com deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/1010:17 pm
DFW
- ORD
Nonstop2h 35m
Frontier
Deal found 3/10![Frontier logo]()
$54
This Kiwi.com deal was found by Cheapflights users on 3/15. 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.
Mon 4/138:48 pm
DFW
- ORD
Nonstop2h 35m
Frontier
Deal found 3/15![Frontier logo]()
$55
This Kiwi.com deal was found by Cheapflights users on 3/14. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/68:55 pm
DFW
- MDW
Nonstop2h 18m
Frontier
Deal found 3/14![Frontier logo]()
$55
This CheapOair deal was found by Cheapflights users on 3/11. Clicking the “Pick Dates” 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 5/277:30 am
DFW
- ORD
Nonstop2h 25m
Spirit Airlines
Deal found 3/11![Spirit Airlines logo]()
$56
This Super.com deal was found by Cheapflights users on 3/14. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/138:55 pm
DFW
- MDW
Nonstop2h 18m
Frontier
Deal found 3/14![Frontier logo]()
$56
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 March 15, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $86 (CheapOair) |
One-way from | $48 (Super.com) |
Popular in | March |
Cheapest in | September |
Average price | $410 |
Good round-trip deal | $374 or less |
Good one-way deal | $193 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 2,558,603 searches. Data last updated March 15, 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
DallasChicago
DFW - ORD
DFWORD
Dallas/Fort Worth
Fri 6/5
7:22 pm-10:05 pm
Nonstop2h 43m
Chicago O'Hare Intl
Tue 6/9
6:10 am-8:45 am
Nonstop2h 35m
$211
DallasChicago
DFW - MDW
DFWMDW
Dallas/Fort Worth
Sat 5/23
5:20 am-12:42 pm
1 stop7h 22m
Chicago Midway
Tue 5/26
6:36 pm-11:11 pm
1 stop4h 35m
$216
Quickest round-trip
TulsaChicago
TUL - MDW
TULMDW
Tulsa
Tue 4/7
5:05 am-6:50 am
Nonstop1h 45m
Chicago Midway
Tue 4/14
9:05 pm-11:00 pm
Nonstop1h 55m
$217
TulsaChicago
TUL - MDW
TULMDW
Tulsa
Tue 5/12
5:05 am-6:50 am
Nonstop1h 45m
Chicago Midway
Tue 5/19
9:40 am-11:35 am
Nonstop1h 55m
$217
DallasChicago
DFW - MDW
DFWMDW
Dallas/Fort Worth
Tue 6/2
7:00 am-1:19 pm
1 stop6h 19m
Chicago Midway
Sat 6/6
6:36 pm-11:11 pm
1 stop4h 35m
$236
DallasChicago
DFW - MDW
DFWMDW
Dallas/Fort Worth
Tue 4/21
11:37 am-4:26 pm
1 stop4h 49m
Chicago Midway
Wed 4/22
6:38 pm-11:24 pm
1 stop4h 46m
$237
DallasChicago
DFW - MDW
DFWMDW
Dallas/Fort Worth
Sat 4/25
5:45 am-12:43 pm
1 stop6h 58m
Chicago Midway
Sat 4/25
6:38 pm-11:24 pm
1 stop4h 46m
$237
DallasChicago
DFW - MDW
DFWMDW
Dallas/Fort Worth
Thu 4/30
5:45 am-12:43 pm
1 stop6h 58m
Chicago Midway
Sun 5/3
6:38 pm-11:24 pm
1 stop4h 46m
$239
TulsaChicago
TUL - ORD
TULORD
Tulsa
Sat 5/9
7:32 pm-9:41 pm
Nonstop2h 09m
Chicago O'Hare Intl
Wed 5/13
9:00 pm-11:10 pm
Nonstop2h 10m
$243
DallasChicago
DFW - ORD
DFWORD
Dallas/Fort Worth
Sun 9/6
7:22 pm-9:58 pm
Nonstop2h 36m
Chicago O'Hare Intl
Fri 9/11
7:14 am-9:54 am
Nonstop2h 40m
$245
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.
DFW-MDW
DFW-ORD
TUL-MDW
DFW-STL
TUL-ORD
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Oklahoma to Illinois
USOK-USIL
DFW-MDW
DFW-ORD
TUL-MDW
DFW-STL
What is the cheapest month to book a flight from Oklahoma to Illinois?
Currently, June is the cheapest month in which you can book a flight from Oklahoma to Illinois (average of $121). Flying from Oklahoma to Illinois in July is currently the most expensive (average of $253). 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 March 15, 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 26% on your trip compared to booking a flight in the evening.
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 March 14, 2026.
Travelers seeking maximum savings on their Oklahoma to Illinois flight should consider departing on Saturday at noon 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.
Weekly flight availability from Oklahoma to Illinois
Explore weekly flight availability from Oklahoma 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 March 15, 2026.
The most flights from USOK to USIL are scheduled on a Monday (21 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (18 on average).
Reviews of airlines servicing Illinois
Get insights into the airlines that provide service to Illinois. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Illinois. Reviews last updated March 15, 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.
Overall
8.0
Comfort
8.0
Food
7.0
Crew
8.6
Boarding
8.1
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Overall
8.0
Comfort
8.0
Food
7.0
Crew
8.6
Boarding
8.1
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Overall
8.0
Comfort
8.0
Food
7.0
Crew
8.6
Boarding
8.1
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Overall
8.0
Comfort
8.0
Food
7.0
Crew
8.6
Boarding
8.1
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Overall
8.0
Comfort
8.0
Food
7.0
Crew
8.6
Boarding
8.1
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
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.
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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 March 15, 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 4 airlines flying from Oklahoma to Illinois
Discover the top 4 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 2,558,603 searches. Data last updated March 15, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$138 | Average$188 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$189 | Average$385 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$197 | Average$374 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$243 | Average$381 | FlexibilityNo cancel fee | On-time69% |