$129+ Cheap flights from Bismarck (BIS) 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 8/30. Fares are subject to change and may not be available on all flights or dates of travel.
BIS — ORD
Aug 11 — Aug 181
Round-trip
1 adult, Economy
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Find cheap flights from Bismarck to Illinois with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Cheapest flights from Bismarck to IllinoisExplore the most affordable flight options available from Bismarck to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 12, 2026.
Explore the most affordable flight options available from Bismarck to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 12, 2026.
This Delta deal was found by Cheapflights users on 7/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/67:55 am
BIS
- MDW
1 stop3h 53m
Delta
Sat 10/1012:28 pm
MDW
- BIS
1 stop7h 03m
Delta
Deal found 7/8![Delta logo]()
$256
This Delta deal was found by Cheapflights users on 7/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/67:55 am
BIS
- ORD
1 stop3h 48m
Delta
Sat 10/103:39 pm
ORD
- BIS
1 stop3h 52m
Delta
Deal found 7/8![Delta logo]()
$256
This Delta deal was found by Cheapflights users on 7/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/35:00 am
BIS
- MDW
2 stops7h 48m
Delta
Sat 11/712:28 pm
MDW
- BIS
1 stop7h 03m
Delta
Deal found 7/8![Delta logo]()
$261
This Delta deal was found by Cheapflights users on 7/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/35:00 am
BIS
- ORD
2 stops8h 01m
Delta
Sat 11/712:33 pm
ORD
- BIS
1 stop6h 58m
Delta
Deal found 7/8![Delta logo]()
$261
This American Airlines deal was found by Cheapflights users on 7/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/712:56 pm
BIS
- ORD
Nonstop2h 18m
American Airlines
Tue 10/139:53 am
ORD
- BIS
Nonstop2h 30m
American Airlines
Deal found 7/9![American Airlines logo]()
$295
This American Airlines deal was found by Cheapflights users on 7/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/312:56 pm
BIS
- ORD
Nonstop2h 18m
American Airlines
Sat 11/73:50 pm
ORD
- BIS
1 stop6h 33m
American Airlines
Deal found 7/9![American Airlines logo]()
$305
This Delta deal was found by Cheapflights users on 7/8. Clicking the “Pick Dates” 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 8/215:00 am
BIS
- STL
1 stop5h 23m
Delta
Sun 8/236:20 am
STL
- BIS
1 stop6h 27m
Delta
Deal found 7/8![Delta logo]()
$309
This Delta deal was found by Cheapflights users on 7/9. Clicking the “Pick Dates” 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 8/221:17 pm
BIS
- ORD
2 stops7h 13m
Delta
Wed 8/268:28 am
ORD
- BIS
1 stop4h 19m
Delta
Deal found 7/9![Delta logo]()
$320
This American Airlines deal was found by Cheapflights users on 7/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2112:56 pm
BIS
- ORD
Nonstop2h 18m
American Airlines
Sat 10/249:53 am
ORD
- BIS
Nonstop2h 30m
American Airlines
Deal found 7/8![American Airlines logo]()
$332
This American Airlines deal was found by Cheapflights users on 7/8. Clicking the “Pick Dates” 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 8/2712:58 pm
BIS
- ORD
Nonstop2h 25m
American Airlines
Sat 8/2910:05 am
ORD
- BIS
Nonstop2h 26m
American Airlines
Deal found 7/8![American Airlines logo]()
$337
This Delta deal was found by Cheapflights users on 7/8. Clicking the “Pick Dates” 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 10/75:32 pm
BIS
- ORD
1 stop4h 00m
Delta
Tue 10/139:59 am
ORD
- BIS
1 stop4h 39m
Delta
Deal found 7/8![Delta logo]()
$357
This Delta deal was found by Cheapflights users on 7/9. Clicking the “Pick Dates” 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 8/221:17 pm
BIS
- MDW
1 stop4h 44m
Delta
Wed 8/261:25 pm
MDW
- BIS
2 stops6h 21m
Delta
Deal found 7/9![Delta logo]()
$362
Best flights from Bismarck to IllinoisDiscover carefully curated flight deals from Bismarck to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 12, 2026.
Discover carefully curated flight deals from Bismarck to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 12, 2026.
This Delta deal was found by Cheapflights users on 7/10. 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 11/37:55 am
BIS
- ORD
1 stop6h 49m
Delta
Sat 11/712:33 pm
ORD
- BIS
1 stop6h 58m
Delta
Deal found 7/10![Delta logo]()
$315
This American Airlines deal was found by Cheapflights users on 7/9. Clicking the “Pick Dates” 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 7/311:55 pm
BIS
- STL
1 stop5h 58m
American Airlines
Sun 8/27:07 am
STL
- BIS
1 stop6h 18m
American Airlines
Deal found 7/9![American Airlines logo]()
$467
This United Airlines deal was found by Cheapflights users on 7/11. 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.
Sat 12/121:30 pm
BIS
- STL
1 stop7h 29m
United Airlines
Tue 12/151:30 pm
STL
- BIS
1 stop6h 33m
United Airlines
Deal found 7/11![United Airlines logo]()
$475
This Delta deal was found by Cheapflights users on 7/12. 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.
Sat 8/225:00 am
BIS
- MDW
2 stops7h 39m
Delta
Wed 8/261:51 pm
MDW
- BIS
1 stop5h 55m
Delta
Deal found 7/12![Delta logo]()
$320
This Delta deal was found by Cheapflights users on 7/9. Clicking the “Pick Dates” 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 8/221:17 pm
BIS
- ORD
2 stops7h 13m
Delta
Wed 8/261:59 pm
ORD
- BIS
2 stops9h 13m
Delta
Deal found 7/9![Delta logo]()
$325
This Delta deal was found by Cheapflights users on 7/10. 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.
Wed 10/75:32 pm
BIS
- ORD
1 stop4h 00m
Delta
Tue 10/139:59 am
ORD
- BIS
1 stop4h 39m
Delta
Deal found 7/10![Delta logo]()
$357
This Delta deal was found by Cheapflights users on 7/10. 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.
Wed 10/77:55 am
BIS
- MDW
1 stop3h 53m
Delta
Sat 10/1012:28 pm
MDW
- BIS
1 stop7h 03m
Delta
Deal found 7/10![Delta logo]()
$427
This United Airlines deal was found by Cheapflights users on 7/11. 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.
Thu 8/271:40 pm
BIS
- ORD
1 stop8h 20m
United Airlines
Sat 8/296:59 am
ORD
- BIS
2 stops13h 34m
United Airlines
Deal found 7/11![United Airlines logo]()
$577
This Delta deal was found by Cheapflights users on 7/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/65:00 am
BIS
- ORD
2 stops8h 01m
Delta
Sat 10/1012:33 pm
ORD
- BIS
1 stop6h 58m
Delta
Deal found 7/8![Delta logo]()
$432
This Delta deal was found by Cheapflights users on 7/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/25:00 am
BIS
- ORD
1 stop3h 30m
Delta
Sun 10/41:55 pm
ORD
- BIS
2 stops9h 16m
Delta
Deal found 7/7![Delta logo]()
$463
This Delta deal was found by Cheapflights users on 7/8. Clicking the “Pick Dates” 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 12/225:30 pm
BIS
- STL
1 stop5h 48m
Delta
Fri 12/2512:30 pm
STL
- BIS
1 stop4h 24m
Delta
Deal found 7/8![Delta logo]()
$512
This Delta deal was found by Cheapflights users on 7/12. 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.
Thu 9/101:17 pm
BIS
- ORD
1 stop4h 16m
Delta
Sun 9/136:00 am
ORD
- BIS
1 stop4h 32m
Delta
Deal found 7/12![Delta logo]()
$539
This Delta deal was found by Cheapflights users on 7/8. Clicking the “Pick Dates” 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 8/278:01 am
BIS
- MDW
1 stop5h 09m
Delta
Sat 8/299:59 am
MDW
- BIS
1 stop6h 57m
Delta
Deal found 7/8![Delta logo]()
$589
This Delta deal was found by Cheapflights users on 7/7. Clicking the “Pick Dates” 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 9/255:00 am
BIS
- ORD
1 stop3h 30m
Delta
Sun 9/276:00 am
ORD
- BIS
1 stop4h 32m
Delta
Deal found 7/7![Delta logo]()
$589
This Delta deal was found by Cheapflights users on 7/11. 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.
Wed 10/77:55 am
BIS
- MDW
1 stop3h 53m
Delta
Tue 10/139:59 am
MDW
- BIS
1 stop4h 39m
Delta
Deal found 7/11![Delta logo]()
$659
This Delta deal was found by Cheapflights users on 7/8. Clicking the “Pick Dates” 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 7/3111:20 am
BIS
- MDW
1 stop6h 58m
Delta
Mon 8/31:51 pm
MDW
- BIS
1 stop5h 55m
Delta
Deal found 7/8![Delta logo]()
$729
This Delta deal was found by Cheapflights users on 7/8. Clicking the “Pick Dates” 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 8/41:27 pm
BIS
- MDW
1 stop4h 34m
Delta
Sun 8/97:25 pm
MDW
- BIS
1 stop3h 47m
Delta
Deal found 7/8![Delta logo]()
$809
Last-minute flights from Bismarck to IllinoisDiscover last-minute flight deals from Bismarck to Illinois. Data last updated July 12, 2026 and is based on user searches.
Discover last-minute flight deals from Bismarck to Illinois. Data last updated July 12, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 7/8. Clicking the “Pick Dates” 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 7/215:00 am
BIS
- STL
1 stop5h 28m
Delta
Tue 8/45:34 pm
STL
- BIS
1 stop5h 38m
Delta
Deal found 7/8![Delta logo]()
$517
This American Airlines deal was found by Cheapflights users on 7/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/216:00 am
BIS
- STL
2 stops11h 21m
American Airlines
Tue 8/46:55 am
STL
- BIS
1 stop5h 21m
American Airlines
Deal found 7/8![American Airlines logo]()
$567
This Delta deal was found by Cheapflights users on 7/8. Clicking the “Pick Dates” 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 7/298:00 am
BIS
- MDW
1 stop5h 09m
Delta
Tue 8/41:51 pm
MDW
- BIS
1 stop5h 55m
Delta
Deal found 7/8![Delta logo]()
$679
This American Airlines deal was found by Cheapflights users on 7/9. Clicking the “Pick Dates” 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 7/311:55 pm
BIS
- STL
1 stop5h 58m
American Airlines
Sun 8/27:07 am
STL
- BIS
1 stop6h 18m
American Airlines
Deal found 7/9![American Airlines logo]()
$467
This Delta deal was found by Cheapflights users on 7/8. Clicking the “Pick Dates” 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 8/215:00 am
BIS
- STL
1 stop5h 23m
Delta
Sun 8/236:20 am
STL
- BIS
1 stop6h 27m
Delta
Deal found 7/8![Delta logo]()
$309
This American Airlines deal was found by Cheapflights users on 7/8. Clicking the “Pick Dates” 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 8/211:55 pm
BIS
- STL
2 stops10h 19m
American Airlines
Sun 8/235:42 am
STL
- BIS
1 stop7h 43m
American Airlines
Deal found 7/8![American Airlines logo]()
$393
This Delta deal was found by Cheapflights users on 7/7. Clicking the “Pick Dates” 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 8/225:36 pm
BIS
- ORD
1 stop4h 11m
Delta
Wed 8/266:00 am
ORD
- BIS
1 stop6h 47m
Delta
Deal found 7/7![Delta logo]()
$197
This American Airlines deal was found by Cheapflights users on 7/9. Clicking the “Pick Dates” 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 8/221:01 pm
BIS
- ORD
Nonstop2h 25m
American Airlines
Wed 8/2610:00 am
ORD
- BIS
Nonstop2h 27m
American Airlines
Deal found 7/9![American Airlines logo]()
$295
This Delta deal was found by Cheapflights users on 7/9. Clicking the “Pick Dates” 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 8/221:17 pm
BIS
- MDW
1 stop4h 44m
Delta
Wed 8/261:51 pm
MDW
- BIS
1 stop5h 55m
Delta
Deal found 7/9![Delta logo]()
$315
This American Airlines deal was found by Cheapflights users on 7/8. Clicking the “Pick Dates” 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 8/2712:58 pm
BIS
- ORD
Nonstop2h 25m
American Airlines
Sat 8/2910:05 am
ORD
- BIS
Nonstop2h 26m
American Airlines
Deal found 7/8![American Airlines logo]()
$337
This Delta deal was found by Cheapflights users on 7/8. Clicking the “Pick Dates” 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 8/278:01 am
BIS
- ORD
1 stop6h 58m
Delta
Sat 8/296:00 am
ORD
- BIS
1 stop6h 37m
Delta
Deal found 7/8![Delta logo]()
$368
This Delta deal was found by Cheapflights users on 7/8. Clicking the “Pick Dates” 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 8/278:01 am
BIS
- MDW
1 stop5h 09m
Delta
Sat 8/299:59 am
MDW
- BIS
1 stop6h 57m
Delta
Deal found 7/8![Delta logo]()
$589
One-way flights from Bismarck to IllinoisSearch for one-way flight options from Bismarck to Illinois. Find affordable one-way fares based on user searches. Data last updated July 12, 2026.
Search for one-way flight options from Bismarck to Illinois. Find affordable one-way fares based on user searches. Data last updated July 12, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/11. 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.
Sun 8/302:38 pm
BIS
- ORD
1 stop28h 24m
Multiple Airlines
Deal found 7/11![Multiple Airlines logo]()
$129
This Kiwi.com deal was found by Cheapflights users on 7/9. Clicking the “Pick Dates” 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 10/410:41 pm
BIS
- ORD
1 stop31h 01m
Multiple Airlines
Deal found 7/9![Multiple Airlines logo]()
$138
This Kiwi.com deal was found by Cheapflights users on 7/8. Clicking the “Pick Dates” 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 8/912:34 pm
BIS
- ORD
2 stops41h 43m
Multiple Airlines
Deal found 7/8![Multiple Airlines logo]()
$157
This Kiwi.com deal was found by Cheapflights users on 7/12. 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.
Thu 9/102:40 pm
BIS
- ORD
1 stop15h 02m
Multiple Airlines
Deal found 7/12![Multiple Airlines logo]()
$159
This Kiwi.com deal was found by Cheapflights users on 7/8. Clicking the “Pick Dates” 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 8/612:34 pm
BIS
- ORD
1 stop17h 03m
Multiple Airlines
Deal found 7/8![Multiple Airlines logo]()
$184
This Kiwi.com deal was found by Cheapflights users on 7/11. 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.
Sun 10/1110:45 pm
BIS
- ORD
1 stop30h 57m
Multiple Airlines
Deal found 7/11![Multiple Airlines logo]()
$201
This Kiwi.com deal was found by Cheapflights users on 7/11. 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.
Sun 8/302:38 pm
BIS
- MDW
3 stops29h 53m
Multiple Airlines
Deal found 7/11![Multiple Airlines logo]()
$206
This Kiwi.com deal was found by Cheapflights users on 7/12. 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.
Sun 8/1612:34 pm
BIS
- MDW
3 stops58h 13m
Multiple Airlines
Deal found 7/12![Multiple Airlines logo]()
$260
This Kiwi.com deal was found by Cheapflights users on 7/10. 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.
Fri 7/2410:04 pm
BIS
- MDW
2 stops45h 17m
Allegiant Air
Deal found 7/10![Allegiant Air logo]()
$377
This Delta deal was found by Cheapflights users on 7/11. 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.
Tue 8/411:10 am
BIS
- MDW
1 stop6h 51m
Delta
Deal found 7/11![Delta logo]()
$408
This Delta deal was found by Cheapflights users on 7/11. 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.
Sat 8/295:00 am
BIS
- MDW
2 stops7h 39m
Delta
Deal found 7/11![Delta logo]()
$485
This Delta deal was found by Cheapflights users on 7/9. Clicking the “Pick Dates” 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 8/108:01 am
BIS
- MDW
2 stops10h 32m
Delta
Deal found 7/9![Delta logo]()
$495
Find flight deals from Bismarck to Illinois
Keep the following information in mind while searching for Bismarck to Illinois flight deals. Data was last updated July 12, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $256 (Delta) |
One-way from | $129 (Kiwi.com) |
Popular in | December |
Cheapest in | November |
Average price | $389 |
Good round-trip deal | $420 or less |
Good one-way deal | $347 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Bismarck 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 July 12, 2026.
Use the filters below to find and compare flights from Bismarck to Illinois that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
BismarckChicago
BIS - ORD
BISORD
Bismarck
Tue 11/3
7:55 am-2:44 pm
1 stop6h 49m
Chicago O'Hare Intl
Sat 11/7
12:33 pm-7:31 pm
1 stop6h 58m
$315
BismarckChicago
BIS - MDW
BISMDW
Bismarck
Sat 8/22
5:00 am-12:39 pm
2 stops7h 39m
Chicago Midway
Wed 8/26
1:51 pm-7:46 pm
1 stop5h 55m
$320
BismarckChicago
BIS - ORD
BISORD
Bismarck
Sat 8/22
1:17 pm-8:30 pm
2 stops7h 13m
Chicago O'Hare Intl
Wed 8/26
1:59 pm-11:12 pm
2 stops9h 13m
$325
BismarckChicago
BIS - ORD
BISORD
Bismarck
Wed 10/7
5:32 pm-9:32 pm
1 stop4h 00m
Chicago O'Hare Intl
Tue 10/13
9:59 am-2:38 pm
1 stop4h 39m
$357
BismarckChicago
BIS - MDW
BISMDW
Bismarck
Wed 10/7
7:55 am-11:48 am
1 stop3h 53m
Chicago Midway
Sat 10/10
12:28 pm-7:31 pm
1 stop7h 03m
$427
BismarckChicago
BIS - ORD
BISORD
Bismarck
Tue 10/6
5:00 am-1:01 pm
2 stops8h 01m
Chicago O'Hare Intl
Sat 10/10
12:33 pm-7:31 pm
1 stop6h 58m
$432
BismarckChicago
BIS - ORD
BISORD
Bismarck
Fri 10/2
5:00 am-8:30 am
1 stop3h 30m
Chicago O'Hare Intl
Sun 10/4
1:55 pm-11:11 pm
2 stops9h 16m
$463
BismarckSt. Louis
BIS - STL
BISSTL
Bismarck
Fri 7/31
1:55 pm-7:53 pm
1 stop5h 58m
Lambert-St Louis
Sun 8/2
7:07 am-1:25 pm
1 stop6h 18m
$467
BismarckSt. Louis
BIS - STL
BISSTL
Bismarck
Sat 12/12
1:30 pm-8:59 pm
1 stop7h 29m
Lambert-St Louis
Tue 12/15
1:30 pm-8:03 pm
1 stop6h 33m
$475
BismarckSt. Louis
BIS - STL
BISSTL
Bismarck
Tue 12/22
5:30 pm-11:18 pm
1 stop5h 48m
Lambert-St Louis
Fri 12/25
12:30 pm-4:54 pm
1 stop4h 24m
$512
Showing 1-10 of 35 resultsSorted by cheapest first
Best time to book a flight from Bismarck to Illinois
Have a flexible travel schedule? Discover the best time to fly to Illinois from Bismarck with our price prediction graph.
BIS-ORD
BIS-STL
BIS-MDW
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 Bismarck to Illinois
BIS-USIL
BIS-ORD
BIS-STL
BIS-MDW
What is the cheapest month to book a flight from Bismarck to Illinois?
Currently, November is the cheapest month in which you can book a flight from Bismarck to Illinois (average of $199). Flying from Bismarck to Illinois in June is currently the most expensive (average of $404). 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 BIS to IL?
Find hourly flight availability from Bismarck 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 July 12, 2026.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Bismarck to Illinois as you normally would.
Weekly flight availability from Bismarck to Illinois
Explore weekly flight availability from Bismarck 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 July 12, 2026.
The most flights from BIS to USIL are scheduled on a Monday (2 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (2 on average).
How much does it cost to fly round-trip from Bismarck to Illinois?
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 July 12, 2026.
Peruse reviews from past customers who have flown with American Airlines from Bismarck to Illinois to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Overall
7.1
Boarding
7.5
Crew
7.9
Entertainment
6.8
Comfort
7.2
Food
6.4
Reviews
1 / 20
2.0
MediocreAnonymous,Aug 2025
BNA - ORD
Overall
7.1
Boarding
7.5
Crew
7.9
Entertainment
6.8
Comfort
7.2
Food
6.4
Reviews
1 / 20
2.0
MediocreAnonymous,Aug 2025
BNA - ORD
Related info for your journey
Find useful and relevant information for your journey from Bismarck 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 Bismarck to Illinois
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Bismarck and Illinois flights
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Popular flight searches
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Bismarck to Illinois flights
Consider these flights traveling from Bismarck to Illinois.
Top airline flying from Bismarck to Illinois
Discover the top airline that operate flights from Bismarck 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 July 12, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$259 | Average$338 | FlexibilityNo cancel fee | On-time71% |