$127+ Cheap flights from Chicago (CHI) to Idaho
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/17. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — BOI
Sep 5 — Sep 121
Round-trip
1 adult, Economy
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Find cheap flights from Chicago to Idaho 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 Chicago to IdahoExplore the most affordable flight options available from Chicago to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 6, 2026.
Explore the most affordable flight options available from Chicago to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 6, 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 11/57:00 am -
1 stop8h 57m
Mon 11/93:52 pm -
1 stop12h 43m
Deal found 8/4![Frontier logo]()
$232
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.
Sat 9/52:41 pm -
1 stop21h 48m
Fri 9/112:50 pm -
1 stop13h 48m
Deal found 8/4![Frontier logo]()
$241
This CheapOair deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” 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 9/178:55 pm -
1 stop18h 00m
Mon 9/212:50 pm -
1 stop13h 48m
Deal found 8/3![Frontier logo]()
$242
This Frontier deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” 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 10/236:50 am -
1 stop9h 07m
Mon 10/263:52 pm -
1 stop12h 50m
Deal found 8/1![Frontier logo]()
$259
This CheapOair deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” 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 9/248:55 pm -
1 stop18h 00m
Sun 9/272:50 pm -
1 stop13h 48m
Deal found 7/31![Frontier logo]()
$269
This Kiwi.com deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/91:21 pm -
1 stop25h 34m
Mon 9/142:50 pm -
1 stop13h 48m
Deal found 7/31![Frontier logo]()
$271
This American Airlines deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” 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 9/1910:45 am -
Nonstop3h 43m
Tue 9/221:58 pm -
Nonstop3h 37m
Deal found 8/1![American Airlines logo]()
$281
This SmartFares deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/156:00 am -
1 stop7h 37m
Tue 9/223:34 pm -
1 stop6h 25m
Deal found 8/1![Alaska Airlines logo]()
$283
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.
Sat 9/2610:45 am -
Nonstop3h 43m
Sun 10/41:58 pm -
Nonstop3h 37m
Deal found 8/4![American Airlines logo]()
$300
This Delta deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” 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 10/202:03 pm -
1 stop5h 13m
Tue 10/276:00 am -
1 stop4h 55m
Deal found 8/3![Delta logo]()
$301
This Trip.com deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” 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.
Wed 9/166:00 am -
1 stop8h 39m
Wed 9/231:36 pm -
1 stop8h 23m
Deal found 8/2![Alaska Airlines logo]()
$301
This Trip.com deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” 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 8/312:18 pm -
1 stop10h 31m
Sun 9/67:03 am -
1 stop10h 18m
Deal found 8/3![Alaska Airlines logo]()
$302
Best flights from Chicago to IdahoDiscover carefully curated flight deals from Chicago to Idaho that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 6, 2026.
Discover carefully curated flight deals from Chicago to Idaho that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 6, 2026.
This United Airlines deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” 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 9/55:00 am -
1 stop5h 51m
Tue 9/84:04 pm -
1 stop6h 55m
Deal found 8/1![United Airlines logo]()
$301
This Alaska Airlines deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” 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 11/149:31 am -
1 stop6h 51m
Tue 11/171:41 pm -
1 stop8h 16m
Deal found 7/31![Alaska Airlines logo]()
$311
This American Airlines deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” 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 10/2111:15 am -
Nonstop4h 06m
Mon 10/262:15 pm -
Nonstop3h 52m
Deal found 7/31![American Airlines logo]()
$331
This Southwest deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” 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 9/512:40 pm -
1 stop7h 00m
Sun 9/66:55 pm -
1 stop9h 50m
Deal found 7/31![Southwest logo]()
$338
This Delta deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” 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 9/56:59 am -
2 stops11h 53m
Fri 9/112:11 pm -
1 stop8h 48m
Deal found 8/2![Delta logo]()
$338
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.
Thu 9/245:00 am -
1 stop5h 53m
Tue 9/294:05 pm -
1 stop6h 54m
Deal found 8/5![United Airlines logo]()
$320
This Alaska Airlines deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” 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 9/286:00 am -
1 stop7h 35m
Sat 10/37:20 am -
1 stop29h 05m
Deal found 8/1![Alaska Airlines logo]()
$337
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 10/237:35 am -
1 stop5h 47m
Mon 10/266:00 am -
1 stop4h 55m
Deal found 8/4![Delta logo]()
$339
This Southwest deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” 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 9/512:40 pm -
1 stop7h 00m
Tue 9/87:05 am -
2 stops9h 05m
Deal found 8/1![Southwest logo]()
$347
This United Airlines deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” 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.
Mon 8/248:40 am -
Nonstop3h 48m
Thu 8/2712:24 pm -
Nonstop3h 38m
Deal found 8/3![United Airlines logo]()
$331
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 9/312:54 pm -
1 stop6h 54m
Sun 9/66:49 am -
1 stop9h 11m
Deal found 8/4![Delta logo]()
$342
This Alaska Airlines deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” 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.
Fri 9/183:52 pm -
1 stop8h 52m
Fri 9/256:49 pm -
1 stop17h 33m
Deal found 8/2![Alaska Airlines logo]()
$347
This Southwest deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” 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 9/174:55 pm -
1 stop8h 00m
Sat 9/196:40 am -
1 stop8h 25m
Deal found 8/2![Southwest logo]()
$351
This United Airlines deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” 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 10/1410:00 am -
Nonstop4h 24m
Tue 10/205:00 am -
1 stop6h 15m
Deal found 8/1![United Airlines logo]()
$341
This Alaska Airlines deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” 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.
Sun 9/136:00 am -
1 stop8h 39m
Sat 9/1912:17 pm -
1 stop9h 42m
Deal found 8/3![Alaska Airlines logo]()
$348
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.
Wed 9/302:05 pm -
1 stop5h 12m
Sun 10/46:00 am -
1 stop4h 55m
Deal found 8/4![Delta logo]()
$350
This Southwest deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” 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 9/156:40 am -
1 stop5h 15m
Tue 9/226:00 am -
1 stop6h 30m
Deal found 8/1![Southwest logo]()
$351
This Southwest deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/93:50 pm -
1 stop8h 25m
Mon 9/143:45 pm -
1 stop7h 05m
Deal found 8/2![Southwest logo]()
$351
This Delta deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” 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 10/316:04 am -
1 stop7h 46m
Wed 11/187:00 am -
1 stop7h 39m
Deal found 8/2![Delta logo]()
$351
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.
Fri 10/167:16 pm -
1 stop21h 04m
Mon 10/191:58 pm -
1 stop9h 01m
Deal found 8/5![Alaska Airlines logo]()
$369
This Southwest deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” 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 9/195:40 am -
1 stop8h 20m
Tue 9/226:00 am -
1 stop8h 05m
Deal found 7/31![Southwest logo]()
$351
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.
Sat 9/266:05 am -
1 stop7h 23m
Sat 10/101:00 pm -
1 stop7h 33m
Deal found 8/4![Delta logo]()
$351
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.
Fri 8/2811:40 am -
Nonstop3h 30m
Mon 8/3112:10 pm -
Nonstop3h 20m
Deal found 8/5![Southwest logo]()
$351
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.
Wed 9/167:07 am -
1 stop10h 32m
Sat 9/191:00 pm -
1 stop8h 57m
Deal found 8/4![Delta logo]()
$351
This United Airlines deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” 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 9/94:30 pm -
Nonstop3h 21m
Tue 10/64:28 pm -
1 stop6h 31m
Deal found 8/2![United Airlines logo]()
$465
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.
Sat 9/269:25 am -
1 stop7h 10m
Sat 10/102:15 pm -
1 stop6h 50m
Deal found 8/4![Southwest logo]()
$351
This Delta deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” 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 9/125:30 pm -
1 stop8h 18m
Thu 9/171:00 pm -
1 stop8h 57m
Deal found 8/1![Delta logo]()
$351
This Delta deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” 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 9/287:13 pm -
1 stop5h 46m
Sat 10/35:30 am -
2 stops11h 52m
Deal found 8/1![Delta logo]()
$356
This Southwest deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/163:50 pm -
1 stop8h 25m
Wed 9/237:05 am -
2 stops9h 05m
Deal found 8/2![Southwest logo]()
$356
This Alaska 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/163:52 pm -
1 stop18h 54m
Wed 9/2310:28 am -
1 stop12h 31m
Deal found 8/4![Alaska Airlines logo]()
$477
Last-minute flights from Chicago to IdahoDiscover last-minute flight deals from Chicago to Idaho. Data last updated August 6, 2026 and is based on user searches.
Discover last-minute flight deals from Chicago to Idaho. Data last updated August 6, 2026 and is based on user searches.
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.
Wed 8/262:41 pm -
1 stop21h 48m
Sun 8/3012:24 pm -
1 stop24h 12m
Deal found 8/5![Frontier logo]()
$271
This Trip.com deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” 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 8/312:18 pm -
1 stop10h 31m
Sun 9/67:03 am -
1 stop10h 18m
Deal found 8/3![Alaska Airlines logo]()
$302
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.
Sat 9/52:41 pm -
1 stop21h 48m
Fri 9/112:50 pm -
1 stop13h 48m
Deal found 8/4![Frontier logo]()
$241
This United Airlines deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” 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 9/55:00 am -
1 stop5h 51m
Tue 9/84:04 pm -
1 stop6h 55m
Deal found 8/1![United Airlines logo]()
$301
This Kiwi.com deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/91:21 pm -
1 stop25h 34m
Mon 9/142:50 pm -
1 stop13h 48m
Deal found 8/2![Frontier logo]()
$272
This CheapOair deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” 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 9/108:55 pm -
1 stop18h 00m
Sun 9/132:50 pm -
1 stop13h 48m
Deal found 8/3![Frontier logo]()
$269
This SmartFares deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/156:00 am -
1 stop7h 37m
Tue 9/223:34 pm -
1 stop6h 25m
Deal found 8/1![Alaska Airlines logo]()
$283
This SmartFares deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/168:00 am -
1 stop8h 30m
Wed 9/234:20 pm -
1 stop6h 39m
Deal found 8/2![Alaska Airlines logo]()
$288
This Trip.com deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” 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.
Wed 9/166:00 am -
1 stop8h 39m
Wed 9/231:36 pm -
1 stop8h 23m
Deal found 8/2![Alaska Airlines logo]()
$301
This CheapOair deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” 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 9/178:55 pm -
1 stop18h 00m
Mon 9/212:50 pm -
1 stop13h 48m
Deal found 8/3![Frontier logo]()
$242
This American Airlines deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” 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 9/1910:45 am -
Nonstop3h 43m
Tue 9/221:58 pm -
Nonstop3h 37m
Deal found 8/1![American Airlines logo]()
$281
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.
Sat 9/2610:45 am -
Nonstop3h 43m
Sun 10/41:58 pm -
Nonstop3h 37m
Deal found 8/4![American Airlines logo]()
$300
One-way flights from Chicago to IdahoSearch for one-way flight options from Chicago to Idaho. Find affordable one-way fares based on user searches. Data last updated August 6, 2026.
Search for one-way flight options from Chicago to Idaho. Find affordable one-way fares based on user searches. Data last updated August 6, 2026.
This CheapOair deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” 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 9/178:55 pm -
1 stop18h 00m
Deal found 8/3![Frontier logo]()
$127
This Kiwi.com deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” 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 9/278:55 pm -
1 stop18h 00m
Deal found 8/1![Frontier logo]()
$128
This Kiwi.com deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/52:41 pm -
1 stop21h 48m
Deal found 8/3![Frontier logo]()
$129
This Kiwi.com deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/32:46 pm -
2 stops49h 11m
Deal found 8/2![Frontier logo]()
$134
This Kiwi.com deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/306:30 am -
2 stops32h 25m
Deal found 8/1![Frontier logo]()
$143
This Alaska Airlines deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” 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.
Fri 10/306:00 am -
1 stop7h 35m
Deal found 8/3![Alaska Airlines logo]()
$147
This Kiwi.com deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” 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 9/248:55 pm -
1 stop18h 00m
Deal found 8/1![Frontier logo]()
$152
This Kiwi.com deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/412:03 pm -
2 stops27h 54m
Deal found 8/1![Frontier logo]()
$153
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.
Thu 9/108:55 pm -
1 stop15h 55m
Deal found 8/4![Multiple Airlines logo]()
$154
This Kiwi.com deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2812:03 pm -
2 stops27h 54m
Deal found 8/1![Frontier logo]()
$154
This Alaska Airlines deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” 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.
Tue 9/16:00 am -
1 stop7h 36m
Deal found 8/3![Alaska Airlines logo]()
$156
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.
Wed 9/26:54 pm -
1 stop7h 05m
Deal found 8/5![Alaska Airlines logo]()
$156
Find flight deals from Chicago to Idaho
Keep the following information in mind while searching for Chicago to Idaho flight deals. Data was last updated August 6, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $232 (Frontier) |
One-way from | $127 (CheapOair) |
Popular in | December |
Cheapest in | February |
Average price | $389 |
Good round-trip deal | $380 or less |
Good one-way deal | $253 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Chicago to Idaho 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 6, 2026.
Use the filters below to find and compare flights from Chicago to Idaho that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
ChicagoIdaho Falls
ORD Chicago O'Hare Intl - IDA Idaho Falls Fanning Field
ORDIDA
Chicago O'Hare Intl
Sat 9/5
5:00 am-9:51 am
1 stop5h 51m
Idaho Falls Fanning Field
Tue 9/8
4:04 pm-11:59 pm
1 stop6h 55m
$301
ChicagoSpokane
ORD Chicago O'Hare Intl - GEG Spokane
ORDGEG
Chicago O'Hare Intl
Sat 11/14
9:31 am-2:22 pm
1 stop6h 51m
Spokane
Tue 11/17
1:41 pm-11:57 pm
1 stop8h 16m
$311
ChicagoIdaho Falls
ORD Chicago O'Hare Intl - IDA Idaho Falls Fanning Field
ORDIDA
Chicago O'Hare Intl
Thu 9/24
5:00 am-9:53 am
1 stop5h 53m
Idaho Falls Fanning Field
Tue 9/29
4:05 pm-11:59 pm
1 stop6h 54m
$320
ChicagoSpokane
ORD Chicago O'Hare Intl - GEG Spokane
ORDGEG
Chicago O'Hare Intl
Wed 10/21
11:15 am-1:21 pm
Nonstop4h 06m
Spokane
Mon 10/26
2:15 pm-8:07 pm
Nonstop3h 52m
$331
ChicagoBoise
ORD Chicago O'Hare Intl - BOI Boise Air Term. Gowen Fld
ORDBOI
Chicago O'Hare Intl
Mon 8/24
8:40 am-11:28 am
Nonstop3h 48m
Boise Air Term. Gowen Fld
Thu 8/27
12:24 pm-5:02 pm
Nonstop3h 38m
$331
ChicagoBoise
ORD Chicago O'Hare Intl - BOI Boise Air Term. Gowen Fld
ORDBOI
Chicago O'Hare Intl
Mon 9/28
6:00 am-12:35 pm
1 stop7h 35m
Boise Air Term. Gowen Fld
Sat 10/3
7:20 am-1:25 pm
1 stop29h 05m
$337
ChicagoBoise
MDW Chicago Midway - BOI Boise Air Term. Gowen Fld
MDWBOI
Chicago Midway
Sat 9/5
12:40 pm-6:40 pm
1 stop7h 00m
Boise Air Term. Gowen Fld
Sun 9/6
6:55 pm-5:45 am
1 stop9h 50m
$338
ChicagoBoise
ORD Chicago O'Hare Intl - BOI Boise Air Term. Gowen Fld
ORDBOI
Chicago O'Hare Intl
Sat 9/5
6:59 am-5:52 pm
2 stops11h 53m
Boise Air Term. Gowen Fld
Fri 9/11
2:11 pm-11:59 pm
1 stop8h 48m
$338
ChicagoIdaho Falls
ORD Chicago O'Hare Intl - IDA Idaho Falls Fanning Field
ORDIDA
Chicago O'Hare Intl
Fri 10/23
7:35 am-12:22 pm
1 stop5h 47m
Idaho Falls Fanning Field
Mon 10/26
6:00 am-11:55 am
1 stop4h 55m
$339
ChicagoSpokane
ORD Chicago O'Hare Intl - GEG Spokane
ORDGEG
Chicago O'Hare Intl
Wed 10/14
10:00 am-12:24 pm
Nonstop4h 24m
Spokane
Tue 10/20
5:00 am-1:15 pm
1 stop6h 15m
$341
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Chicago to Idaho
Have a flexible travel schedule? Discover the best time to fly to Idaho from Chicago with our price prediction graph.
ORD-BOI
ORD-IDA
ORD-GEG
MDW-BOI
MDW-GEG
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 Chicago to Idaho
CHI-USID
ORD-BOI
ORD-IDA
ORD-GEG
MDW-BOI
What is the cheapest month to book a flight from Chicago to Idaho?
Currently, February is the cheapest month in which you can book a flight from Chicago to Idaho (average of $323). Flying from Chicago to Idaho in December is currently the most expensive (average of $558). 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 CHI to ID?
Find hourly flight availability from Chicago to Idaho. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 6, 2026.
It’s typically best to fly out from Chicago to Idaho at noon. Doing so could potentially save you 24% on the flight price compared to flying in the afternoon, which is usually more expensive.
Weekly flight availability from Chicago to Idaho
Explore weekly flight availability from Chicago to Idaho. 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 August 6, 2026.
The most flights from CHI to USID are scheduled on a Monday (7 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (5 on average).
How much does it cost to fly round-trip from Chicago to Idaho?
Airfare is below average for this route at the moment.
Chicago to Idaho flights typically cost between $357 and $547 in November.The cheapest round-trip price found within the last 5 days was $232 on Frontier (Nov 5-Nov 9).
How far ahead should I book a flight from Chicago to Idaho?
Booking 74 days in advance of your planned departure date is, on average, the best time to get cheap flights from Chicago to Idaho. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
Reviews of airlines servicing Idaho
Get insights into the airlines that provide service to Idaho. 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 Idaho. Reviews last updated August 6, 2026.
Get a feel of what it's like to fly with Southwest,Alaska Airlines, andDelta from Chicago to Idaho by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.6
Entertainment
7.5
Comfort
8.0
Food
7.0
Boarding
8.1
Overall
8.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Crew
8.6
Entertainment
7.5
Comfort
8.0
Food
7.0
Boarding
8.1
Overall
8.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Crew
8.6
Entertainment
7.5
Comfort
8.0
Food
7.0
Boarding
8.1
Overall
8.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Crew
8.6
Entertainment
7.5
Comfort
8.0
Food
7.0
Boarding
8.1
Overall
8.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Crew
8.6
Entertainment
7.5
Comfort
8.0
Food
7.0
Boarding
8.1
Overall
8.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Crew
8.6
Entertainment
7.5
Comfort
8.0
Food
7.0
Boarding
8.1
Overall
8.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Related info for your journey
Find useful and relevant information for your journey from Chicago to Idaho. 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 Chicago to Idaho
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Idaho by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Chicago to Idaho by cabin class
Find flights from Chicago to Idaho, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Chicago and Idaho flights
Browse other Chicago and Idaho flight options. Last updated on August 6, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Chicago to Idaho flights
Consider these flights traveling from Chicago to Idaho.
Top 5 airlines flying from Chicago to Idaho
Discover the top 5 airlines that operate flights from Chicago to Idaho. 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 6, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$268 | Average$339 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$269 | Average$453 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$283 | Average$433 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$288 | Average$458 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$348 | Average$364 | FlexibilityNo cancel fee | On-time75% |