$120+ Cheap flights from North Dakota 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 9/25. Fares are subject to change and may not be available on all flights or dates of travel.
FAR — ORD
aug. 22 — aug. 291
Round-trip
1 adult, Economy
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Cheapest flights from North Dakota to IllinoisExplore the most affordable flight options available from North Dakota to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on juli 23, 2026.
Explore the most affordable flight options available from North Dakota to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on juli 23, 2026.
This CheapOair deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” 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.
lør. 9/52:33 pm
FAR
- ORD
1 stop23h 03m
Frontier
tor. 9/1011:06 am
ORD
- FAR
1 stop26h 27m
Frontier
Deal found 7/22![Frontier logo]()
$230
This CheapOair deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” 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.
fre. 9/252:28 pm
FAR
- ORD
1 stop7h 07m
Frontier
søn. 9/2710:40 pm
ORD
- FAR
1 stop14h 53m
Frontier
Deal found 7/20![Frontier logo]()
$258
This American Airlines deal was found by Cheapflights users on 7/19. 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.
tor. 9/34:57 pm
FAR
- ORD
Nonstop2h 21m
American Airlines
tir. 9/82:20 pm
ORD
- FAR
Nonstop2h 07m
American Airlines
Deal found 7/19![American Airlines logo]()
$269
This American Airlines deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” 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.
fre. 8/215:00 am
FAR
- ORD
Nonstop2h 09m
American Airlines
lør. 8/225:00 am
ORD
- FAR
1 stop6h 06m
American Airlines
Deal found 7/20![American Airlines logo]()
$279
This United Airlines deal was found by Cheapflights users on 7/19. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ons. 8/196:00 pm
FAR
- STL
1 stop4h 59m
United Airlines
lør. 8/221:05 pm
STL
- FAR
1 stop6h 39m
United Airlines
Deal found 7/19![United Airlines logo]()
$285
This Trip.com deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” 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.
lør. 7/252:33 pm
FAR
- ORD
1 stop6h 19m
Frontier
tir. 7/289:57 pm
ORD
- FAR
1 stop15h 51m
Frontier
Deal found 7/21![Frontier logo]()
$286
This Delta deal was found by Cheapflights users on 7/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lør. 8/225:00 am
FAR
- ORD
1 stop3h 30m
Delta
lør. 8/298:28 am
ORD
- FAR
1 stop5h 37m
Delta
Deal found 7/19![Delta logo]()
$289
This Delta deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” 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.
fre. 8/215:00 am
FAR
- MDW
1 stop3h 39m
Delta
lør. 8/227:25 pm
MDW
- FAR
1 stop3h 40m
Delta
Deal found 7/20![Delta logo]()
$289
This American Airlines deal was found by Cheapflights users on 7/19. 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.
tir. 11/31:06 pm
BIS
- ORD
Nonstop2h 19m
American Airlines
lør. 11/710:00 am
ORD
- BIS
Nonstop2h 32m
American Airlines
Deal found 7/19![American Airlines logo]()
$295
This United Airlines deal was found by Cheapflights users on 7/19. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
tor. 8/209:00 am
FAR
- STL
1 stop7h 34m
United Airlines
lør. 8/221:05 pm
STL
- FAR
1 stop6h 39m
United Airlines
Deal found 7/19![United Airlines logo]()
$297
This Delta deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” 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.
tor. 8/201:12 pm
FAR
- ORD
1 stop6h 18m
Delta
man. 8/246:00 am
ORD
- FAR
1 stop4h 19m
Delta
Deal found 7/22![Delta logo]()
$299
This Delta deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” 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.
tor. 8/201:12 pm
FAR
- MDW
1 stop4h 49m
Delta
tir. 8/259:59 am
MDW
- FAR
1 stop4h 06m
Delta
Deal found 7/22![Delta logo]()
$299
Best flights from North Dakota to IllinoisDiscover carefully curated flight deals from North Dakota to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated juli 23, 2026.
Discover carefully curated flight deals from North Dakota to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated juli 23, 2026.
This United Airlines deal was found by Cheapflights users on 7/19. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ons. 8/196:00 pm
FAR
- STL
1 stop4h 59m
United Airlines
lør. 8/221:05 pm
STL
- FAR
1 stop6h 39m
United Airlines
Deal found 7/19![United Airlines logo]()
$285
This Delta deal was found by Cheapflights users on 7/18. 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.
tor. 9/35:00 am
FAR
- ORD
1 stop3h 30m
Delta
lør. 9/56:00 am
ORD
- FAR
1 stop6h 29m
Delta
Deal found 7/18![Delta logo]()
$289
This Kiwi.com deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” 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.
fre. 9/252:28 pm
FAR
- STL
2 stops19h 12m
Frontier
søn. 9/278:10 pm
STL
- FAR
1 stop17h 23m
Frontier
Deal found 7/20![Frontier logo]()
$388
This American Airlines deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” 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.
tir. 9/811:36 am
FAR
- STL
1 stop6h 29m
American Airlines
tor. 9/107:27 am
STL
- FAR
1 stop7h 40m
American Airlines
Deal found 7/20![American Airlines logo]()
$411
This Delta deal was found by Cheapflights users on 7/18. 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.
tir. 9/85:00 am
FAR
- ORD
1 stop3h 30m
Delta
lør. 9/126:10 am
ORD
- FAR
1 stop4h 07m
Delta
Deal found 7/18![Delta logo]()
$289
This Delta deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” 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.
fre. 8/215:00 am
FAR
- ORD
1 stop3h 30m
Delta
lør. 8/228:28 am
ORD
- FAR
1 stop5h 37m
Delta
Deal found 7/20![Delta logo]()
$289
This United Airlines deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” 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.
tor. 8/209:00 am
FAR
- STL
1 stop7h 34m
United Airlines
søn. 8/235:30 pm
STL
- FAR
1 stop6h 02m
United Airlines
Deal found 7/20![United Airlines logo]()
$344
This Delta deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” 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.
fre. 8/211:12 pm
FAR
- MDW
1 stop4h 49m
Delta
fre. 8/287:25 pm
MDW
- FAR
1 stop4h 25m
Delta
Deal found 7/22![Delta logo]()
$299
This United Airlines deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” 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.
lør. 11/141:40 pm
FAR
- ORD
Nonstop2h 14m
United Airlines
tir. 11/177:45 pm
ORD
- FAR
Nonstop2h 10m
United Airlines
Deal found 7/22![United Airlines logo]()
$359
This Delta deal was found by Cheapflights users on 7/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
tir. 10/65:00 am
BIS
- MDW
1 stop3h 47m
Delta
lør. 10/1012:28 pm
MDW
- BIS
1 stop7h 03m
Delta
Deal found 7/19![Delta logo]()
$315
This American Airlines deal was found by Cheapflights users on 7/18. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
fre. 9/1111:36 am
FAR
- STL
2 stops9h 08m
American Airlines
søn. 9/137:27 am
STL
- FAR
1 stop4h 24m
American Airlines
Deal found 7/18![American Airlines logo]()
$423
This United Airlines deal was found by Cheapflights users on 7/18. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lør. 8/291:23 pm
MOT
- STL
1 stop7h 23m
United Airlines
tir. 9/14:40 pm
STL
- MOT
1 stop5h 25m
United Airlines
Deal found 7/18![United Airlines logo]()
$378
This Delta deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” 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.
tor. 8/201:12 pm
FAR
- ORD
1 stop6h 18m
Delta
man. 8/248:28 am
ORD
- FAR
1 stop4h 01m
Delta
Deal found 7/21![Delta logo]()
$319
This Delta deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” 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.
tor. 8/201:12 pm
FAR
- MDW
1 stop4h 49m
Delta
man. 8/247:25 pm
MDW
- FAR
1 stop4h 25m
Delta
Deal found 7/21![Delta logo]()
$319
This United Airlines deal was found by Cheapflights users on 7/19. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
man. 8/246:00 pm
FAR
- ORD
Nonstop2h 08m
United Airlines
fre. 8/285:30 pm
ORD
- FAR
Nonstop2h 14m
United Airlines
Deal found 7/19![United Airlines logo]()
$427
This Delta deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” 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.
lør. 8/221:17 pm
BIS
- MDW
1 stop4h 44m
Delta
lør. 8/299:24 am
MDW
- BIS
2 stops7h 32m
Delta
Deal found 7/22![Delta logo]()
$330
This American Airlines deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” 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.
man. 8/105:00 am
FAR
- PIA
1 stop13h 15m
American Airlines
man. 8/176:48 pm
PIA
- FAR
2 stops16h 18m
American Airlines
Deal found 7/20![American Airlines logo]()
$552
This United Airlines deal was found by Cheapflights users on 7/18. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lør. 9/127:30 am
FAR
- STL
1 stop6h 45m
United Airlines
ons. 9/161:36 pm
STL
- FAR
1 stop7h 11m
United Airlines
Deal found 7/18![United Airlines logo]()
$439
This Delta deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” 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.
lør. 8/225:00 am
BIS
- ORD
1 stop3h 30m
Delta
lør. 8/296:59 am
ORD
- BIS
2 stops9h 57m
Delta
Deal found 7/22![Delta logo]()
$330
This American Airlines deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” 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.
fre. 9/1111:36 am
FAR
- PIA
2 stops12h 32m
American Airlines
søn. 9/135:28 pm
PIA
- FAR
2 stops17h 38m
American Airlines
Deal found 7/22![American Airlines logo]()
$560
This Delta deal was found by Cheapflights users on 7/18. 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.
man. 9/285:19 pm
MOT
- STL
1 stop5h 57m
Delta
man. 10/511:21 am
STL
- MOT
1 stop5h 18m
Delta
Deal found 7/18![Delta logo]()
$332
This Delta deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” 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.
lør. 10/35:19 pm
MOT
- STL
1 stop5h 57m
Delta
søn. 10/46:15 am
STL
- MOT
1 stop5h 39m
Delta
Deal found 7/20![Delta logo]()
$332
This American Airlines deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” 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.
fre. 9/185:00 am
FAR
- PIA
2 stops17h 57m
American Airlines
søn. 9/205:28 pm
PIA
- FAR
1 stop5h 35m
American Airlines
Deal found 7/20![American Airlines logo]()
$602
This Delta deal was found by Cheapflights users on 7/18. 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.
fre. 8/1412:34 pm
MOT
- ORD
1 stop6h 56m
Delta
man. 8/175:57 pm
ORD
- MOT
1 stop5h 32m
Delta
Deal found 7/18![Delta logo]()
$334
This United Airlines deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” 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.
lør. 12/125:50 pm
FAR
- PIA
1 stop4h 58m
United Airlines
ons. 12/163:30 pm
PIA
- FAR
1 stop6h 25m
United Airlines
Deal found 7/20![United Airlines logo]()
$555
This Delta deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” 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.
fre. 9/185:00 am
FAR
- STL
1 stop3h 40m
Delta
søn. 9/206:15 am
STL
- FAR
1 stop4h 02m
Delta
Deal found 7/20![Delta logo]()
$335
This United Airlines deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” 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.
tir. 8/181:23 pm
MOT
- STL
1 stop7h 23m
United Airlines
man. 8/245:30 pm
STL
- MOT
2 stops19h 18m
United Airlines
Deal found 7/20![United Airlines logo]()
$560
This Delta deal was found by Cheapflights users on 7/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
fre. 9/255:00 am
FAR
- STL
1 stop3h 40m
Delta
søn. 9/276:15 am
STL
- FAR
1 stop4h 02m
Delta
Deal found 7/19![Delta logo]()
$335
This Delta deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” 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.
man. 8/176:54 pm
FAR
- STL
1 stop4h 32m
Delta
man. 8/246:20 am
STL
- FAR
1 stop6h 09m
Delta
Deal found 7/20![Delta logo]()
$335
This United Airlines deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” 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.
lør. 9/51:23 pm
MOT
- ORD
2 stops18h 10m
United Airlines
man. 9/75:55 am
ORD
- MOT
1 stop6h 53m
United Airlines
Deal found 7/22![United Airlines logo]()
$625
Last-minute flights from North Dakota to IllinoisDiscover last-minute flight deals from North Dakota to Illinois. Data last updated juli 23, 2026 and is based on user searches.
Discover last-minute flight deals from North Dakota to Illinois. Data last updated juli 23, 2026 and is based on user searches.
This Trip.com deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” 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.
lør. 7/252:33 pm
FAR
- ORD
1 stop6h 19m
Frontier
tir. 7/289:57 pm
ORD
- FAR
1 stop15h 51m
Frontier
Deal found 7/21![Frontier logo]()
$286
This Delta deal was found by Cheapflights users on 7/18. 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.
fre. 8/71:12 pm
FAR
- MDW
1 stop4h 49m
Delta
tir. 8/111:51 pm
MDW
- FAR
1 stop5h 57m
Delta
Deal found 7/18![Delta logo]()
$309
This Delta deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” 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.
lør. 8/85:53 pm
FAR
- ORD
1 stop3h 54m
Delta
lør. 8/156:00 am
ORD
- FAR
1 stop4h 19m
Delta
Deal found 7/20![Delta logo]()
$309
This United Airlines deal was found by Cheapflights users on 7/19. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ons. 8/196:00 pm
FAR
- STL
1 stop4h 59m
United Airlines
lør. 8/221:05 pm
STL
- FAR
1 stop6h 39m
United Airlines
Deal found 7/19![United Airlines logo]()
$285
This United Airlines deal was found by Cheapflights users on 7/19. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
tor. 8/209:00 am
FAR
- STL
1 stop7h 34m
United Airlines
lør. 8/221:05 pm
STL
- FAR
1 stop6h 39m
United Airlines
Deal found 7/19![United Airlines logo]()
$297
This Delta deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” 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.
tor. 8/201:12 pm
FAR
- ORD
1 stop6h 18m
Delta
lør. 8/223:00 pm
ORD
- FAR
1 stop4h 48m
Delta
Deal found 7/22![Delta logo]()
$299
This Delta deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” 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.
tor. 8/201:12 pm
FAR
- MDW
1 stop4h 49m
Delta
man. 8/241:51 pm
MDW
- FAR
1 stop4h 22m
Delta
Deal found 7/22![Delta logo]()
$299
This American Airlines deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” 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.
fre. 8/215:00 am
FAR
- ORD
Nonstop2h 09m
American Airlines
lør. 8/225:00 am
ORD
- FAR
1 stop6h 06m
American Airlines
Deal found 7/20![American Airlines logo]()
$279
This Delta deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” 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.
fre. 8/215:00 am
FAR
- MDW
1 stop3h 39m
Delta
lør. 8/227:25 pm
MDW
- FAR
1 stop3h 40m
Delta
Deal found 7/20![Delta logo]()
$289
This Delta deal was found by Cheapflights users on 7/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lør. 8/225:00 am
FAR
- ORD
1 stop3h 30m
Delta
lør. 8/298:28 am
ORD
- FAR
1 stop5h 37m
Delta
Deal found 7/19![Delta logo]()
$289
This American Airlines deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” 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.
lør. 8/221:01 pm
BIS
- ORD
Nonstop2h 25m
American Airlines
lør. 8/2910:05 am
ORD
- BIS
Nonstop2h 26m
American Airlines
Deal found 7/22![American Airlines logo]()
$295
This American Airlines deal was found by Cheapflights users on 7/19. 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.
tir. 8/255:00 am
FAR
- ORD
Nonstop2h 09m
American Airlines
lør. 8/299:47 am
ORD
- FAR
Nonstop2h 06m
American Airlines
Deal found 7/19![American Airlines logo]()
$269
One-way flights from North Dakota to IllinoisSearch for one-way flight options from North Dakota to Illinois. Find affordable one-way fares based on user searches. Data last updated juli 23, 2026.
Search for one-way flight options from North Dakota to Illinois. Find affordable one-way fares based on user searches. Data last updated juli 23, 2026.
This Frontier deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” 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.
fre. 9/252:28 pm
FAR
- ORD
1 stop7h 07m
Frontier
Deal found 7/22![Frontier logo]()
$120
This Frontier deal was found by Cheapflights users on 7/19. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
man. 8/172:24 pm
FAR
- ORD
1 stop6h 28m
Frontier
Deal found 7/19![Frontier logo]()
$124
This Expedia deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” 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.
man. 9/212:28 pm
FAR
- ORD
1 stop19h 33m
Frontier
Deal found 7/22![Frontier logo]()
$126
This CheapOair deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” 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.
fre. 9/42:33 pm
FAR
- ORD
1 stop23h 03m
Frontier
Deal found 7/21![Frontier logo]()
$131
This CheapOair deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” 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.
ons. 10/212:28 pm
FAR
- ORD
1 stop19h 33m
Frontier
Deal found 7/22![Frontier logo]()
$134
This CheapOair deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” 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.
fre. 8/212:33 pm
FAR
- ORD
1 stop23h 03m
Frontier
Deal found 7/22![Frontier logo]()
$135
This Frontier deal was found by Cheapflights users on 7/19. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lør. 8/152:24 pm
FAR
- ORD
1 stop6h 28m
Frontier
Deal found 7/19![Frontier logo]()
$152
This Kiwi.com deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” 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.
man. 10/192:28 pm
FAR
- ORD
1 stop19h 33m
Frontier
Deal found 7/22![Frontier logo]()
$154
This Kiwi.com deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” 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.
man. 8/179:52 pm
FAR
- ORD
2 stops42h 07m
Multiple Airlines
Deal found 7/21![Multiple Airlines logo]()
$165
This American Airlines deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” 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.
lør. 9/55:06 pm
FAR
- ORD
Nonstop2h 21m
American Airlines
Deal found 7/21![American Airlines logo]()
$168
This Kiwi.com deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” 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.
søn. 8/232:38 pm
BIS
- ORD
1 stop28h 24m
Multiple Airlines
Deal found 7/21![Multiple Airlines logo]()
$180
This Kiwi.com deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” 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.
søn. 9/201:30 pm
BIS
- ORD
2 stops20h 31m
Multiple Airlines
Deal found 7/22![Multiple Airlines logo]()
$194
Find flight deals from North Dakota to Illinois
Keep the following information in mind while searching for North Dakota to Illinois flight deals. Data was last updated juli 23, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $230 (CheapOair) |
One-way from | $120 (Frontier) |
Popular in | March |
Cheapest in | January |
Average price | $353 |
Good round-trip deal | $386 or less |
Good one-way deal | $294 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from North Dakota 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 juli 23, 2026.
Use the filters below to find and compare flights from North Dakota to Illinois that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
FargoSt. Louis
FAR - STL
FARSTL
Fargo Hector Field
ons. 8/19
6:00 pm-10:59 pm
1 stop4h 59m
Lambert-St Louis
lør. 8/22
1:05 pm-7:44 pm
1 stop6h 39m
$285
FargoChicago
FAR - ORD
FARORD
Fargo Hector Field
tor. 9/3
5:00 am-8:30 am
1 stop3h 30m
Chicago O'Hare Intl
lør. 9/5
6:00 am-12:29 pm
1 stop6h 29m
$289
FargoChicago
FAR - ORD
FARORD
Fargo Hector Field
tir. 9/8
5:00 am-8:30 am
1 stop3h 30m
Chicago O'Hare Intl
lør. 9/12
6:10 am-10:17 am
1 stop4h 07m
$289
FargoChicago
FAR - ORD
FARORD
Fargo Hector Field
fre. 8/21
5:00 am-8:30 am
1 stop3h 30m
Chicago O'Hare Intl
lør. 8/22
8:28 am-2:05 pm
1 stop5h 37m
$289
FargoChicago
FAR - MDW
FARMDW
Fargo Hector Field
fre. 8/21
1:12 pm-6:01 pm
1 stop4h 49m
Chicago Midway
fre. 8/28
7:25 pm-11:50 pm
1 stop4h 25m
$299
BismarckChicago
BIS - MDW
BISMDW
Bismarck
tir. 10/6
5:00 am-8:47 am
1 stop3h 47m
Chicago Midway
lør. 10/10
12:28 pm-7:31 pm
1 stop7h 03m
$315
FargoChicago
FAR - ORD
FARORD
Fargo Hector Field
tor. 8/20
1:12 pm-7:30 pm
1 stop6h 18m
Chicago O'Hare Intl
man. 8/24
8:28 am-12:29 pm
1 stop4h 01m
$319
FargoChicago
FAR - MDW
FARMDW
Fargo Hector Field
tor. 8/20
1:12 pm-6:01 pm
1 stop4h 49m
Chicago Midway
man. 8/24
7:25 pm-11:50 pm
1 stop4h 25m
$319
BismarckChicago
BIS - MDW
BISMDW
Bismarck
lør. 8/22
1:17 pm-6:01 pm
1 stop4h 44m
Chicago Midway
lør. 8/29
9:24 am-4:56 pm
2 stops7h 32m
$330
BismarckChicago
BIS - ORD
BISORD
Bismarck
lør. 8/22
5:00 am-8:30 am
1 stop3h 30m
Chicago O'Hare Intl
lør. 8/29
6:59 am-4:56 pm
2 stops9h 57m
$330
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from North Dakota to Illinois
Have a flexible travel schedule? Discover the best time to fly to Illinois from North Dakota with our price prediction graph.
FAR-ORD
FAR-STL
FAR-MDW
BIS-ORD
MOT-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 North Dakota to Illinois
USND-USIL
FAR-ORD
FAR-STL
FAR-MDW
BIS-ORD
What is the cheapest month to book a flight from North Dakota to Illinois?
Currently, February is the cheapest month in which you can book a flight from North Dakota to Illinois (average of $285). Flying from North Dakota to Illinois in March is currently the most expensive (average of $399). 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 ND to IL?
Find hourly flight availability from North Dakota 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 juli 23, 2026.
When flying from North Dakota to Illinois, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 6% versus a flight in the evening.
Weekly flight availability from North Dakota to Illinois
Explore weekly flight availability from North Dakota 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 juli 23, 2026.
The most flights from USND to USIL are scheduled on a Thursday (23 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (11 on average).
How much does it cost to fly round-trip from North Dakota to Illinois?
Airfare is below average for this route at the moment.
North Dakota to Illinois flights typically cost between $294 and $478 in September.The cheapest round-trip price found within the last 5 days was $230 on Frontier (Sep 5-Sep 10).
How far ahead should I book a flight from North Dakota to Illinois?
Booking 49 days in advance of your planned departure date is, on average, the best time to get cheap flights from North Dakota to Illinois. 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 North Dakota to Illinois?
Use this chart to determine the cheapest time to fly round-trip from North Dakota to Illinois. Price data was last updated on July 18, 2026.
Travelers seeking maximum savings on their North Dakota to Illinois flight should consider departing on Friday afternoons when fares are most often at their lowest. Sunday afternoons 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 juli 23, 2026.
Read through reviews of airlines operating flights from North Dakota to Illinois, such as Delta,United Airlines, andAmerican Airlines. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
7.8
Food
7.2
Crew
8.5
Overall
7.8
Boarding
8.1
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Comfort
7.8
Food
7.2
Crew
8.5
Overall
7.8
Boarding
8.1
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Comfort
7.8
Food
7.2
Crew
8.5
Overall
7.8
Boarding
8.1
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Comfort
7.8
Food
7.2
Crew
8.5
Overall
7.8
Boarding
8.1
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Related info for your journey
Find useful and relevant information for your journey from North Dakota 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 North Dakota 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 North Dakota to Illinois by cabin class
Find flights from North Dakota to Illinois, based on your preferred cabin class, be it economy, premium economy, business, or first class.
North Dakota and Illinois flights
Browse other North Dakota and Illinois flight options. Last updated on juli 23, 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 North Dakota after your stay in Illinois
North Dakota to Illinois flights
Consider these flights traveling from North Dakota to Illinois.
Top 3 airlines flying from North Dakota to Illinois
Discover the top 3 airlines that operate flights from North Dakota 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 juli 23, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$209 | Average$379 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$228 | Average$396 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$249 | Average$346 | FlexibilityNo cancel fee | On-time71% |