$122+ Cheap flights from Idaho to Chicago (CHI)
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 11/5. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — CHI
Sep 8 — Sep 151
Round-trip
1 adult, Economy
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Find cheap flights from Idaho to Chicago 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 Idaho to ChicagoExplore the most affordable flight options available from Idaho to Chicago. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 9, 2026.
Explore the most affordable flight options available from Idaho to Chicago. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 9, 2026.
This CheapOair deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” 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.
Mon 9/142:50 pm -
1 stop13h 48m
Thu 9/178:55 pm -
1 stop18h 00m
Deal found 8/5![Frontier logo]()
$242
This Frontier deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/123:52 pm -
1 stop12h 43m
Sun 11/157:00 am -
1 stop8h 57m
Deal found 8/5![Frontier logo]()
$259
This CheapOair deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/172:50 pm -
1 stop13h 48m
Sun 9/208:55 pm -
1 stop18h 00m
Deal found 8/4![Frontier logo]()
$269
This CheapOair deal was found by Cheapflights users on 8/7. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/251:24 pm -
1 stop23h 12m
Sat 8/292:41 pm -
1 stop21h 48m
Deal found 8/7![Frontier logo]()
$273
This Frontier deal was found by Cheapflights users on 8/7. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/93:52 pm -
1 stop12h 50m
Mon 10/126:50 am -
1 stop9h 07m
Deal found 8/7![Frontier logo]()
$284
This Expedia deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/293:52 pm -
1 stop12h 43m
Sat 10/317:00 am -
1 stop8h 11m
Deal found 8/5![Multiple Airlines logo]()
$289
This Alaska Airlines deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/54:20 pm -
1 stop6h 39m
Fri 9/117:00 pm -
1 stop15h 56m
Deal found 8/5![Alaska Airlines logo]()
$293
This American Airlines deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” 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 10/221:50 pm -
Nonstop3h 34m
Tue 10/2710:30 am -
Nonstop3h 50m
Deal found 8/4![American Airlines logo]()
$300
This United Airlines deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/95:53 pm -
1 stop5h 06m
Sat 9/125:00 am -
1 stop5h 53m
Deal found 8/4![United Airlines logo]()
$301
This Alaska Airlines deal was found by Cheapflights users on 8/7. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/27:20 am -
1 stop11h 01m
Sat 9/56:54 pm -
1 stop15h 58m
Deal found 8/7![Alaska Airlines logo]()
$302
This Trip.com deal was found by Cheapflights users on 8/8. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/57:03 am -
1 stop10h 18m
Fri 9/117:00 pm -
1 stop6h 59m
Deal found 8/8![Alaska Airlines logo]()
$302
This Expedia deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” 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.
Wed 10/217:20 am -
1 stop10h 33m
Sun 10/251:02 pm -
1 stop26h 55m
Deal found 8/6![Multiple Airlines logo]()
$304
Best flights from Idaho to ChicagoDiscover carefully curated flight deals from Idaho to Chicago that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 9, 2026.
Discover carefully curated flight deals from Idaho to Chicago that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 9, 2026.
This Alaska Airlines deal was found by Cheapflights users on 8/8. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/54:20 pm -
1 stop6h 39m
Fri 9/117:00 pm -
1 stop15h 56m
Deal found 8/8![Alaska Airlines logo]()
$293
This United Airlines deal was found by Cheapflights users on 8/8. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/224:04 pm -
1 stop5h 42m
Sat 9/265:00 am -
1 stop5h 53m
Deal found 8/8![United Airlines logo]()
$301
This Southwest deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/36:00 am -
Nonstop3h 30m
Fri 9/118:50 pm -
Nonstop3h 55m
Deal found 8/4![Southwest logo]()
$314
This Delta deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” 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 10/221:05 pm -
1 stop7h 55m
Tue 10/2710:44 am -
2 stops12h 26m
Deal found 8/4![Delta logo]()
$325
This Alaska Airlines deal was found by Cheapflights users on 8/8. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/96:49 pm -
1 stop17h 33m
Sat 9/196:00 am -
1 stop9h 22m
Deal found 8/8![Alaska Airlines logo]()
$311
This United Airlines deal was found by Cheapflights users on 8/8. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/512:24 pm -
Nonstop3h 38m
Fri 9/118:40 am -
Nonstop3h 46m
Deal found 8/8![United Airlines logo]()
$313
This Delta deal was found by Cheapflights users on 8/8. 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.
Sat 9/55:30 am -
2 stops9h 29m
Fri 9/119:59 am -
2 stops8h 22m
Deal found 8/8![Delta logo]()
$327
This Southwest deal was found by Cheapflights users on 8/8. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/51:50 pm -
1 stop13h 40m
Fri 9/1111:40 am -
Nonstop3h 30m
Deal found 8/8![Southwest logo]()
$329
This Alaska Airlines deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/317:20 am -
1 stop10h 33m
Tue 11/33:59 pm -
1 stop8h 52m
Deal found 8/5![Alaska Airlines logo]()
$318
This United Airlines deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/132:35 pm -
1 stop5h 35m
Tue 11/178:40 am -
1 stop7h 58m
Deal found 8/4![United Airlines logo]()
$320
This Delta deal was found by Cheapflights users on 8/8. 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.
Sat 9/51:59 pm -
1 stop7h 37m
Fri 9/117:13 pm -
1 stop5h 46m
Deal found 8/8![Delta logo]()
$333
This Southwest deal was found by Cheapflights users on 8/7. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/143:45 pm -
1 stop7h 05m
Thu 9/174:55 pm -
1 stop8h 00m
Deal found 8/7![Southwest logo]()
$351
This United Airlines deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” 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 10/222:28 pm -
1 stop7h 18m
Tue 10/278:40 am -
1 stop5h 48m
Deal found 8/4![United Airlines logo]()
$320
This Alaska Airlines deal was found by Cheapflights users on 8/7. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/317:20 am -
1 stop9h 00m
Tue 11/36:33 pm -
1 stop7h 26m
Deal found 8/7![Alaska Airlines logo]()
$331
This Delta deal was found by Cheapflights users on 8/8. 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.
Sat 9/51:06 pm -
2 stops9h 51m
Fri 9/116:10 am -
1 stop8h 34m
Deal found 8/8![Delta logo]()
$338
This Southwest deal was found by Cheapflights users on 8/8. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/54:05 pm -
1 stop12h 40m
Sat 9/125:05 pm -
1 stop5h 30m
Deal found 8/8![Southwest logo]()
$354
This United Airlines deal was found by Cheapflights users on 8/8. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/512:24 pm -
Nonstop3h 38m
Sat 9/127:51 pm -
Nonstop4h 02m
Deal found 8/8![United Airlines logo]()
$329
This Delta deal was found by Cheapflights users on 8/8. 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.
Mon 12/281:10 pm -
1 stop7h 43m
Fri 1/19:30 am -
2 stops9h 44m
Deal found 8/8![Delta logo]()
$344
This Southwest deal was found by Cheapflights users on 8/7. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/262:00 pm -
2 stops10h 10m
Thu 11/1210:05 am -
2 stops7h 00m
Deal found 8/7![Southwest logo]()
$357
This United Airlines deal was found by Cheapflights users on 8/8. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/224:25 pm -
1 stop5h 21m
Tue 9/299:03 am -
Nonstop3h 18m
Deal found 8/8![United Airlines logo]()
$339
This Delta deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” 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 9/21:59 pm -
1 stop7h 37m
Sat 9/59:59 am -
2 stops8h 53m
Deal found 8/6![Delta logo]()
$347
This Alaska Airlines deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/282:01 pm -
1 stop8h 58m
Wed 9/303:52 pm -
1 stop8h 04m
Deal found 8/5![Alaska Airlines logo]()
$395
This Southwest deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/194:05 pm -
2 stops11h 25m
Tue 9/226:40 am -
2 stops8h 00m
Deal found 8/6![Southwest logo]()
$361
This Delta deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” 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 10/3012:08 pm -
2 stops8h 52m
Tue 11/35:27 am -
1 stop9h 07m
Deal found 8/4![Delta logo]()
$347
This Southwest deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/15:45 am -
2 stops9h 20m
Wed 9/94:40 pm -
2 stops7h 50m
Deal found 8/4![Southwest logo]()
$361
This United Airlines deal was found by Cheapflights users on 8/8. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/174:04 pm -
1 stop6h 55m
Tue 9/225:00 am -
1 stop5h 51m
Deal found 8/8![United Airlines logo]()
$370
This Delta deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” 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 9/227:05 am -
1 stop8h 56m
Tue 9/297:07 am -
1 stop10h 32m
Deal found 8/4![Delta logo]()
$351
This Southwest deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/227:30 am -
2 stops9h 30m
Tue 9/293:10 pm -
2 stops9h 20m
Deal found 8/4![Southwest logo]()
$361
This United Airlines deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/3012:24 pm -
Nonstop3h 38m
Sun 9/68:40 am -
Nonstop3h 48m
Deal found 8/5![United Airlines logo]()
$371
This Delta deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” 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 10/155:10 am -
1 stop6h 19m
Thu 10/226:20 am -
1 stop7h 55m
Deal found 8/4![Delta logo]()
$351
Last-minute flights from Idaho to ChicagoDiscover last-minute flight deals from Idaho to Chicago. Data last updated August 9, 2026 and is based on user searches.
Discover last-minute flight deals from Idaho to Chicago. Data last updated August 9, 2026 and is based on user searches.
This Southwest deal was found by Cheapflights users on 8/7. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/36:00 am -
Nonstop3h 30m
Sun 9/611:10 am -
Nonstop3h 45m
Deal found 8/7![Southwest logo]()
$314
This Trip.com deal was found by Cheapflights users on 8/8. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/57:03 am -
1 stop10h 18m
Fri 9/117:00 pm -
1 stop6h 59m
Deal found 8/8![Alaska Airlines logo]()
$302
This Southwest deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/511:05 am -
1 stop5h 25m
Fri 9/118:50 pm -
Nonstop3h 55m
Deal found 8/5![Southwest logo]()
$307
This American Airlines deal was found by Cheapflights users on 8/8. 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.
Sat 9/52:37 pm -
Nonstop3h 51m
Fri 9/111:46 pm -
1 stop8h 35m
Deal found 8/8![American Airlines logo]()
$308
This Priceline deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/51:27 pm -
1 stop8h 32m
Sat 9/198:00 am -
1 stop6h 39m
Deal found 8/6![Alaska Airlines logo]()
$311
This American Airlines deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” 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 9/52:37 pm -
Nonstop3h 51m
Sat 9/1911:20 am -
Nonstop4h 06m
Deal found 8/6![American Airlines logo]()
$314
This Booking.com deal was found by Cheapflights users on 8/8. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/53:41 pm -
1 stop6h 18m
Sat 9/122:18 pm -
1 stop11h 35m
Deal found 8/8![Alaska Airlines logo]()
$317
This Delta deal was found by Cheapflights users on 8/8. 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.
Sat 9/56:45 am -
1 stop7h 12m
Fri 9/117:13 pm -
1 stop5h 43m
Deal found 8/8![Delta logo]()
$318
This Delta deal was found by Cheapflights users on 8/8. 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.
Sat 9/56:45 am -
1 stop6h 45m
Fri 9/1112:50 pm -
1 stop8h 00m
Deal found 8/8![Delta logo]()
$318
This United Airlines deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/95:53 pm -
1 stop5h 06m
Sat 9/125:00 am -
1 stop5h 53m
Deal found 8/4![United Airlines logo]()
$301
This Kiwi.com deal was found by Cheapflights users on 8/8. 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 9/1310:09 am -
1 stop17h 29m
Wed 9/161:21 pm -
1 stop21h 58m
Deal found 8/8![Multiple Airlines logo]()
$309
This Trip.com deal was found by Cheapflights users on 8/7. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/211:39 pm -
1 stop8h 20m
Mon 9/286:00 am -
1 stop7h 37m
Deal found 8/7![Alaska Airlines logo]()
$315
One-way flights from Idaho to ChicagoSearch for one-way flight options from Idaho to Chicago. Find affordable one-way fares based on user searches. Data last updated August 9, 2026.
Search for one-way flight options from Idaho to Chicago. Find affordable one-way fares based on user searches. Data last updated August 9, 2026.
This Frontier deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/53:52 pm -
1 stop12h 43m
Deal found 8/4![Frontier logo]()
$122
This CheapOair deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” 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.
Mon 9/212:50 pm -
1 stop13h 48m
Deal found 8/4![Frontier logo]()
$127
This Kiwi.com deal was found by Cheapflights users on 8/8. 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.
Mon 11/97:47 pm -
2 stops37h 14m
Deal found 8/8![Multiple Airlines logo]()
$133
This Kiwi.com deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” 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 11/13:52 pm -
1 stop19h 05m
Deal found 8/4![Frontier logo]()
$136
This CheapOair deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/182:50 pm -
1 stop13h 48m
Deal found 8/4![Frontier logo]()
$137
This Kiwi.com deal was found by Cheapflights users on 8/7. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/83:52 pm -
1 stop19h 05m
Deal found 8/7![Frontier logo]()
$139
This Kiwi.com deal was found by Cheapflights users on 8/7. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/1310:09 am -
1 stop17h 29m
Deal found 8/7![Multiple Airlines logo]()
$145
This Kiwi.com deal was found by Cheapflights users on 8/8. 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 10/47:30 pm -
1 stop32h 08m
Deal found 8/8![Multiple Airlines logo]()
$146
This Alaska Airlines deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/54:20 pm -
1 stop6h 39m
Deal found 8/6![Alaska Airlines logo]()
$147
This Frontier deal was found by Cheapflights users on 8/7. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/93:52 pm -
1 stop12h 50m
Deal found 8/7![Frontier logo]()
$149
This American Airlines deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” 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 9/52:37 pm -
Nonstop3h 51m
Deal found 8/6![American Airlines logo]()
$149
This Kiwi.com deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” 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 11/17:20 pm -
1 stop14h 37m
Deal found 8/4![Multiple Airlines logo]()
$151
Find flight deals from Idaho to Chicago
Keep the following information in mind while searching for Idaho to Chicago flight deals. Data was last updated August 9, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $242 (CheapOair) |
One-way from | $122 (Frontier) |
Popular in | March |
Cheapest in | February |
Average price | $384 |
Good round-trip deal | $408 or less |
Good one-way deal | $253 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Idaho to Chicago 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 9, 2026.
Use the filters below to find and compare flights from Idaho to Chicago that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
BoiseChicago
BOI Boise Air Term. Gowen Fld - ORD Chicago O'Hare Intl
BOIORD
Boise Air Term. Gowen Fld
Sat 9/5
4:20 pm-11:59 pm
1 stop6h 39m
Chicago O'Hare Intl
Fri 9/11
7:00 pm-9:56 am
1 stop15h 56m
$293
Idaho FallsChicago
IDA Idaho Falls Fanning Field - ORD Chicago O'Hare Intl
IDAORD
Idaho Falls Fanning Field
Tue 9/22
4:04 pm-10:46 pm
1 stop5h 42m
Chicago O'Hare Intl
Sat 9/26
5:00 am-9:53 am
1 stop5h 53m
$301
BoiseChicago
BOI Boise Air Term. Gowen Fld - ORD Chicago O'Hare Intl
BOIORD
Boise Air Term. Gowen Fld
Wed 9/9
6:49 pm-1:22 pm
1 stop17h 33m
Chicago O'Hare Intl
Sat 9/19
6:00 am-2:22 pm
1 stop9h 22m
$311
Quickest round-trip
BoiseChicago
BOI Boise Air Term. Gowen Fld - ORD Chicago O'Hare Intl
BOIORD
Boise Air Term. Gowen Fld
Sat 9/5
12:24 pm-5:02 pm
Nonstop3h 38m
Chicago O'Hare Intl
Fri 9/11
8:40 am-11:26 am
Nonstop3h 46m
$313
SpokaneChicago
GEG Spokane - MDW Chicago Midway
GEGMDW
Spokane
Thu 9/3
6:00 am-11:30 am
Nonstop3h 30m
Chicago Midway
Fri 9/11
8:50 pm-10:45 pm
Nonstop3h 55m
$314
BoiseChicago
BOI Boise Air Term. Gowen Fld - ORD Chicago O'Hare Intl
BOIORD
Boise Air Term. Gowen Fld
Sat 10/31
7:20 am-6:53 pm
1 stop10h 33m
Chicago O'Hare Intl
Tue 11/3
3:59 pm-11:51 pm
1 stop8h 52m
$318
Idaho FallsChicago
IDA Idaho Falls Fanning Field - ORD Chicago O'Hare Intl
IDAORD
Idaho Falls Fanning Field
Fri 11/13
2:35 pm-9:10 pm
1 stop5h 35m
Chicago O'Hare Intl
Tue 11/17
8:40 am-3:38 pm
1 stop7h 58m
$320
Idaho FallsChicago
IDA Idaho Falls Fanning Field - ORD Chicago O'Hare Intl
IDAORD
Idaho Falls Fanning Field
Thu 10/22
2:28 pm-10:46 pm
1 stop7h 18m
Chicago O'Hare Intl
Tue 10/27
8:40 am-1:28 pm
1 stop5h 48m
$320
Idaho FallsChicago
IDA Idaho Falls Fanning Field - ORD Chicago O'Hare Intl
IDAORD
Idaho Falls Fanning Field
Thu 10/22
1:05 pm-10:00 pm
1 stop7h 55m
Chicago O'Hare Intl
Tue 10/27
10:44 am-10:10 pm
2 stops12h 26m
$325
SpokaneChicago
GEG Spokane - MDW Chicago Midway
GEGMDW
Spokane
Sat 9/5
5:30 am-4:59 pm
2 stops9h 29m
Chicago Midway
Fri 9/11
9:59 am-4:21 pm
2 stops8h 22m
$327
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Idaho to Chicago
Have a flexible travel schedule? Discover the best time to fly to Chicago from Idaho with our price prediction graph.
BOI-ORD
IDA-ORD
GEG-ORD
GEG-MDW
BOI-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 Idaho to Chicago
USID-CHI
BOI-ORD
IDA-ORD
GEG-ORD
GEG-MDW
What is the cheapest month to book a flight from Idaho to Chicago?
Currently, February is the cheapest month in which you can book a flight from Idaho to Chicago (average of $340). Flying from Idaho to Chicago in March is currently the most expensive (average of $459). 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 ID to CHI?
Find hourly flight availability from Idaho to Chicago. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 9, 2026.
When flying from Idaho to Chicago, 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 30% versus a flight in the morning.
How much does it cost to fly round-trip from Idaho to Chicago?
Airfare is below average for this route at the moment.
Idaho to Chicago flights typically cost between $337 and $413 in September.The cheapest round-trip price found within the last 5 days was $242 on Frontier (Sep 14-Sep 17).
How far ahead should I book a flight from Idaho to Chicago?
Booking 90 days in advance of your planned departure date is, on average, the best time to get cheap flights from Idaho to Chicago. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
Related info for your journey
Find useful and relevant information for your journey from Idaho to Chicago. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Chicago?
Book flights to Chicago if you plan to visit one of these locationsBenton Harbor
Lansing
Merrillville
Valparaiso
Hammond
Saint Joseph
Porter
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Chicago flight routes
Complete your trip
Flights by cabin class
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Popular flights
Top destinations
Alternative routes for Idaho to Chicago
See prices for flight routes from nearby airports that may be better suited for you.
Other flights to Chicago
Explore flights to Chicago departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on August 9, 2026.
Complete your trip
Complete your trip to Chicago by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Idaho to Chicago by cabin class
Find flights from Idaho to Chicago, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Idaho and Chicago flights
Browse other Idaho and Chicago flight options. Last updated on August 9, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Idaho to Chicago flights
Consider these flights traveling from Idaho to Chicago.
Top 5 airlines flying from Idaho to Chicago
Discover the top 5 airlines that operate flights from Idaho to Chicago. 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 9, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$228 | Average$419 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$295 | Average$473 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$296 | Average$434 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$298 | Average$390 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$314 | Average$455 | FlexibilityNo cancel fee | On-time63% |