$133+ 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 11/15. Fares are subject to change and may not be available on all flights or dates of travel.
BIS — ORD
Sep 14 — Sep 211
Round-trip
1 adult, Economy
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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 August 15, 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 August 15, 2026.
This American Airlines deal was found by Cheapflights users on 8/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/612:56 pm -
Nonstop2h 18m
Sat 10/109:53 am -
Nonstop2h 30m
Deal found 8/11![American Airlines logo]()
$305
This Delta deal was found by Cheapflights users on 8/12. 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 10/68:11 am -
1 stop3h 36m
Sat 10/105:31 pm -
1 stop5h 54m
Deal found 8/12![Delta logo]()
$325
This Delta deal was found by Cheapflights users on 8/12. 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 11/39:00 am -
2 stops9h 00m
Sat 11/710:01 am -
1 stop6h 25m
Deal found 8/12![Delta logo]()
$330
This Delta deal was found by Cheapflights users on 8/12. 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 11/39:00 am -
2 stops7h 32m
Sat 11/75:30 pm -
1 stop5h 55m
Deal found 8/12![Delta logo]()
$330
This American Airlines deal was found by Cheapflights users on 8/10. 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.
Sat 10/1712:56 pm -
Nonstop2h 18m
Sat 10/249:53 am -
Nonstop2h 30m
Deal found 8/10![American Airlines logo]()
$342
This American Airlines deal was found by Cheapflights users on 8/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/612:56 pm -
Nonstop2h 18m
Mon 10/129:53 am -
Nonstop2h 30m
Deal found 8/11![American Airlines logo]()
$347
This American Airlines deal was found by Cheapflights users on 8/14. 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.
Sat 9/191:13 pm -
Nonstop2h 27m
Sun 9/2010:06 am -
Nonstop2h 30m
Deal found 8/14![American Airlines logo]()
$348
This American Airlines deal was found by Cheapflights users on 8/12. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/231:57 pm -
1 stop7h 12m
Sat 9/2610:06 am -
Nonstop2h 30m
Deal found 8/12![American Airlines logo]()
$352
This Delta deal was found by Cheapflights users on 8/13. 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 9/55:36 pm -
1 stop4h 27m
Tue 9/85:47 pm -
1 stop5h 24m
Deal found 8/13![Delta logo]()
$359
This Delta deal was found by Cheapflights users on 8/11. 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 9/811:12 am -
1 stop7h 07m
Tue 9/157:13 pm -
1 stop3h 58m
Deal found 8/11![Delta logo]()
$362
This American Airlines deal was found by Cheapflights users on 8/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/167:12 am -
1 stop8h 48m
Sat 9/193:00 pm -
1 stop7h 52m
Deal found 8/11![American Airlines logo]()
$362
This Delta deal was found by Cheapflights users on 8/12. 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 10/145:00 am -
1 stop3h 53m
Tue 10/203:35 pm -
1 stop4h 15m
Deal found 8/12![Delta logo]()
$388
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 August 15, 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 August 15, 2026.
This Delta deal was found by Cheapflights users on 8/13. 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 9/55:36 pm -
1 stop4h 27m
Tue 9/85:47 pm -
1 stop5h 24m
Deal found 8/13![Delta logo]()
$359
This American Airlines deal was found by Cheapflights users on 8/10. 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.
Thu 9/36:45 am -
1 stop5h 30m
Sun 9/63:35 pm -
1 stop7h 09m
Deal found 8/10![American Airlines logo]()
$397
This United Airlines deal was found by Cheapflights users on 8/13. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 1/261:30 pm -
1 stop7h 29m
Sat 1/301:30 pm -
1 stop6h 33m
Deal found 8/13![United Airlines logo]()
$399
This Delta deal was found by Cheapflights users on 8/11. 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 10/68:11 am -
1 stop3h 36m
Sat 10/105:31 pm -
1 stop5h 54m
Deal found 8/11![Delta logo]()
$367
This Delta deal was found by Cheapflights users on 8/14. 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.
Sun 9/135:00 am -
1 stop3h 30m
Sat 9/1912:29 pm -
1 stop4h 31m
Deal found 8/14![Delta logo]()
$367
This American Airlines deal was found by Cheapflights users on 8/14. 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.
Sat 9/51:55 pm -
1 stop6h 31m
Tue 9/88:07 pm -
1 stop16h 29m
Deal found 8/14![American Airlines logo]()
$436
This Delta deal was found by Cheapflights users on 8/11. 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 11/39:00 am -
2 stops9h 00m
Sat 11/710:01 am -
1 stop6h 25m
Deal found 8/11![Delta logo]()
$372
This American Airlines deal was found by Cheapflights users on 8/14. 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.
Thu 8/2712:58 pm -
Nonstop2h 25m
Sat 8/291:50 pm -
1 stop8h 54m
Deal found 8/14![American Airlines logo]()
$437
This Delta deal was found by Cheapflights users on 8/10. 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.
Thu 11/193:13 pm -
1 stop4h 26m
Mon 11/232:44 pm -
2 stops8h 45m
Deal found 8/10![Delta logo]()
$414
This American Airlines deal was found by Cheapflights users on 8/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/101:57 pm -
2 stops10h 30m
Sun 9/135:00 am -
1 stop7h 36m
Deal found 8/11![American Airlines logo]()
$470
This United Airlines deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/305:45 am -
1 stop5h 57m
Wed 2/310:40 am -
2 stops12h 57m
Deal found 8/14![United Airlines logo]()
$582
This American Airlines deal was found by Cheapflights users on 8/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/91:57 pm -
1 stop5h 10m
Mon 9/145:18 pm -
1 stop19h 18m
Deal found 8/11![American Airlines logo]()
$472
This Delta deal was found by Cheapflights users on 8/14. 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.
Sat 9/191:17 pm -
2 stops10h 42m
Sun 9/206:10 am -
1 stop4h 22m
Deal found 8/14![Delta logo]()
$438
This United Airlines deal was found by Cheapflights users on 8/10. 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.
Tue 9/19:00 am -
1 stop9h 32m
Sat 9/56:59 am -
2 stops13h 34m
Deal found 8/10![United Airlines logo]()
$594
This Delta deal was found by Cheapflights users on 8/14. 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.
Sat 10/175:15 pm -
1 stop4h 21m
Mon 10/195:30 pm -
1 stop5h 55m
Deal found 8/14![Delta logo]()
$442
This Delta deal was found by Cheapflights users on 8/13. 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.
Fri 8/285:00 am -
1 stop3h 30m
Tue 9/16:44 pm -
1 stop4h 28m
Deal found 8/13![Delta logo]()
$447
This American Airlines deal was found by Cheapflights users on 8/12. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/131:13 pm -
1 stop7h 31m
Thu 9/175:00 am -
1 stop7h 36m
Deal found 8/12![American Airlines logo]()
$547
This Delta deal was found by Cheapflights users on 8/12. 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 10/75:00 am -
1 stop3h 53m
Tue 10/138:29 am -
2 stops8h 22m
Deal found 8/12![Delta logo]()
$464
This Delta deal was found by Cheapflights users on 8/14. 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.
Thu 8/271:27 pm -
1 stop4h 34m
Sat 8/291:51 pm -
1 stop5h 55m
Deal found 8/14![Delta logo]()
$469
This Delta deal was found by Cheapflights users on 8/14. 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.
Fri 8/281:27 pm -
2 stops7h 03m
Mon 8/313:51 pm -
1 stop3h 55m
Deal found 8/14![Delta logo]()
$500
This Delta deal was found by Cheapflights users on 8/13. 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.
Wed 10/78:11 am -
1 stop3h 36m
Tue 10/1310:01 am -
1 stop6h 50m
Deal found 8/13![Delta logo]()
$615
This Delta deal was found by Cheapflights users on 8/14. 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.
Sat 10/179:00 am -
2 stops9h 00m
Mon 10/195:31 pm -
1 stop5h 54m
Deal found 8/14![Delta logo]()
$620
This Delta deal was found by Cheapflights users on 8/10. 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 9/235:00 am -
1 stop3h 48m
Sat 9/269:29 am -
2 stops7h 31m
Deal found 8/10![Delta logo]()
$657
This Delta deal was found by Cheapflights users on 8/12. 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.
Fri 9/118:01 am -
1 stop5h 19m
Mon 9/147:13 pm -
1 stop3h 58m
Deal found 8/12![Delta logo]()
$939
Last-minute flights from Bismarck to IllinoisDiscover last-minute flight deals from Bismarck to Illinois. Data last updated August 15, 2026 and is based on user searches.
Discover last-minute flight deals from Bismarck to Illinois. Data last updated August 15, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 8/10. 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.
Thu 9/36:45 am -
1 stop5h 30m
Sun 9/63:35 pm -
1 stop7h 09m
Deal found 8/10![American Airlines logo]()
$397
This Delta deal was found by Cheapflights users on 8/13. 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 9/55:36 pm -
1 stop4h 27m
Tue 9/85:47 pm -
1 stop5h 24m
Deal found 8/13![Delta logo]()
$359
This Delta deal was found by Cheapflights users on 8/11. 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 9/811:12 am -
1 stop7h 07m
Tue 9/157:13 pm -
1 stop3h 58m
Deal found 8/11![Delta logo]()
$362
This American Airlines deal was found by Cheapflights users on 8/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/101:13 pm -
1 stop7h 31m
Sun 9/135:00 am -
1 stop7h 36m
Deal found 8/11![American Airlines logo]()
$392
This American Airlines deal was found by Cheapflights users on 8/14. 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.
Sun 9/131:13 pm -
Nonstop2h 27m
Sat 9/1910:06 am -
Nonstop2h 30m
Deal found 8/14![American Airlines logo]()
$347
This Delta deal was found by Cheapflights users on 8/14. 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.
Sun 9/135:00 am -
1 stop3h 30m
Sat 9/1912:29 pm -
1 stop4h 31m
Deal found 8/14![Delta logo]()
$367
This American Airlines deal was found by Cheapflights users on 8/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/167:12 am -
1 stop8h 48m
Sat 9/193:00 pm -
1 stop7h 52m
Deal found 8/11![American Airlines logo]()
$362
This American Airlines deal was found by Cheapflights users on 8/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/171:13 pm -
Nonstop2h 27m
Sun 9/2010:06 am -
Nonstop2h 30m
Deal found 8/11![American Airlines logo]()
$389
This American Airlines deal was found by Cheapflights users on 8/14. 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.
Sat 9/191:13 pm -
Nonstop2h 27m
Sun 9/2010:06 am -
Nonstop2h 30m
Deal found 8/14![American Airlines logo]()
$348
This Delta deal was found by Cheapflights users on 8/9. 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.
Wed 9/235:00 am -
1 stop3h 48m
Sat 9/267:13 pm -
1 stop3h 58m
Deal found 8/9![Delta logo]()
$325
This American Airlines deal was found by Cheapflights users on 8/12. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/237:12 am -
1 stop8h 48m
Sat 9/261:46 pm -
1 stop9h 06m
Deal found 8/12![American Airlines logo]()
$325
This American Airlines deal was found by Cheapflights users on 8/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/301:13 pm -
Nonstop2h 27m
Sun 10/410:06 am -
Nonstop2h 30m
Deal found 8/11![American Airlines logo]()
$384
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 August 15, 2026.
Search for one-way flight options from Bismarck to Illinois. Find affordable one-way fares based on user searches. Data last updated August 15, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/13. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/1510:06 pm -
1 stop31h 29m
Deal found 8/13![Multiple Airlines logo]()
$133
This Kiwi.com deal was found by Cheapflights users on 8/12. 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 11/89:36 pm -
1 stop31h 59m
Deal found 8/12![Multiple Airlines logo]()
$142
This Kiwi.com deal was found by Cheapflights users on 8/12. 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 10/1110:45 pm -
1 stop30h 31m
Deal found 8/12![Multiple Airlines logo]()
$157
This Kiwi.com deal was found by Cheapflights users on 8/11. 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.
Thu 9/102:40 pm -
1 stop14h 58m
Deal found 8/11![Multiple Airlines logo]()
$181
This Kiwi.com deal was found by Cheapflights users on 8/12. 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 9/201:30 pm -
2 stops22h 29m
Deal found 8/12![Multiple Airlines logo]()
$229
This American Airlines deal was found by Cheapflights users on 8/9. 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 9/41:55 pm -
2 stops10h 19m
Deal found 8/9![American Airlines logo]()
$279
This Kiwi.com deal was found by Cheapflights users on 8/13. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/272:38 pm -
2 stops20h 17m
Deal found 8/13![Multiple Airlines logo]()
$343
This United Airlines deal was found by Cheapflights users on 8/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/41:40 pm -
1 stop7h 06m
Deal found 8/9![United Airlines logo]()
$345
This Delta deal was found by Cheapflights users on 8/10. 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 9/510:00 am -
1 stop5h 57m
Deal found 8/10![Delta logo]()
$388
This Delta deal was found by Cheapflights users on 8/13. 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 1/165:00 am -
2 stops7h 33m
Deal found 8/13![Delta logo]()
$393
This Delta deal was found by Cheapflights users on 8/13. 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.
Thu 8/2711:10 am -
1 stop6h 51m
Deal found 8/13![Delta logo]()
$413
This Delta deal was found by Cheapflights users on 8/13. 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.
Fri 1/157:31 am -
2 stops11h 06m
Deal found 8/13![Delta logo]()
$418
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 August 15, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $305 (American Airlines) |
One-way from | $133 (Kiwi.com) |
Popular in | December |
Cheapest in | November |
Average price | $367 |
Good round-trip deal | $427 or less |
Good one-way deal | $290 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 August 15, 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
BismarckSt. Louis
BIS Bismarck - STL Lambert-St Louis
BISSTL
Bismarck
Sat 9/5
5:36 pm-10:03 pm
1 stop4h 27m
Lambert-St Louis
Tue 9/8
5:47 pm-11:11 pm
1 stop5h 24m
$359
BismarckChicago
BIS Bismarck - MDW Chicago Midway
BISMDW
Bismarck
Tue 10/6
8:11 am-11:47 am
1 stop3h 36m
Chicago Midway
Sat 10/10
5:31 pm-11:25 pm
1 stop5h 54m
$367
BismarckChicago
BIS Bismarck - ORD Chicago O'Hare Intl
BISORD
Bismarck
Sun 9/13
5:00 am-8:30 am
1 stop3h 30m
Chicago O'Hare Intl
Sat 9/19
12:29 pm-5:00 pm
1 stop4h 31m
$367
BismarckChicago
BIS Bismarck - MDW Chicago Midway
BISMDW
Bismarck
Tue 11/3
9:00 am-6:00 pm
2 stops9h 00m
Chicago Midway
Sat 11/7
10:01 am-4:26 pm
1 stop6h 25m
$372
BismarckSt. Louis
BIS Bismarck - STL Lambert-St Louis
BISSTL
Bismarck
Thu 9/3
6:45 am-12:15 pm
1 stop5h 30m
Lambert-St Louis
Sun 9/6
3:35 pm-10:44 pm
1 stop7h 09m
$397
BismarckSt. Louis
BIS Bismarck - STL Lambert-St Louis
BISSTL
Bismarck
Tue 1/26
1:30 pm-8:59 pm
1 stop7h 29m
Lambert-St Louis
Sat 1/30
1:30 pm-8:03 pm
1 stop6h 33m
$399
BismarckChicago
BIS Bismarck - ORD Chicago O'Hare Intl
BISORD
Bismarck
Thu 11/19
3:13 pm-7:39 pm
1 stop4h 26m
Chicago O'Hare Intl
Mon 11/23
2:44 pm-11:29 pm
2 stops8h 45m
$414
BismarckSt. Louis
BIS Bismarck - STL Lambert-St Louis
BISSTL
Bismarck
Sat 9/5
1:55 pm-8:26 pm
1 stop6h 31m
Lambert-St Louis
Tue 9/8
8:07 pm-12:36 pm
1 stop16h 29m
$436
BismarckChicago
BIS Bismarck - ORD Chicago O'Hare Intl
BISORD
Bismarck
Thu 8/27
12:58 pm-3:23 pm
Nonstop2h 25m
Chicago O'Hare Intl
Sat 8/29
1:50 pm-10:44 pm
1 stop8h 54m
$437
BismarckChicago
BIS Bismarck - ORD Chicago O'Hare Intl
BISORD
Bismarck
Sat 9/19
1:17 pm-11:59 pm
2 stops10h 42m
Chicago O'Hare Intl
Sun 9/20
6:10 am-10:32 am
1 stop4h 22m
$438
Showing 1-10 of 42 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-MDW
BIS-ORD
BIS-STL
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-MDW
BIS-ORD
BIS-STL
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 $262). Flying from Bismarck to Illinois in December is currently the most expensive (average of $685). 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 August 15, 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.
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 August 15, 2026.
Peruse reviews from past customers who have flown with Delta and 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
7.8
Comfort
7.8
Boarding
8.1
Food
7.2
Crew
8.5
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Overall
7.8
Comfort
7.8
Boarding
8.1
Food
7.2
Crew
8.5
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Overall
7.8
Comfort
7.8
Boarding
8.1
Food
7.2
Crew
8.5
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Related info for your journey
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Alternative routes for Bismarck to Illinois
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Complete your trip
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Bismarck and Illinois flights
Browse other Bismarck and Illinois flight options. Last updated on August 15, 2026.
Popular flight searches
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Bismarck to Illinois flights
Consider these flights traveling from Bismarck to Illinois.
Top 2 airlines flying from Bismarck to Illinois
Discover the top 2 airlines 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 August 15, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$259 | Average$374 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$267 | Average$327 | FlexibilityNo cancel fee | On-timeN/A |