$123+ Cheap flights from Boise (BOI) 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 9/15. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — CHI
Jul 20 — Jul 271
Round-trip
1 adult, Economy
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Find cheap flights from Boise 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
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheapflights Tip: The best prices from Boise Air Term. Gowen Fld to Chicago are usually found in February or September, booked 49 days in advance, depart on a Thursday or Friday and return on a Wednesday
Cheap flight deals from Boise to Chicago
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Cheapest flights from Boise to ChicagoExplore the most affordable flight options available from Boise to Chicago. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 20, 2026.
Explore the most affordable flight options available from Boise to Chicago. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 20, 2026.
This Travelocity deal was found by Cheapflights users on 6/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/2412:59 pm
BOI
- ORD
1 stop20h 02m
Frontier
Mon 10/510:40 pm
ORD
- BOI
1 stop14h 24m
Frontier
Deal found 6/19![Frontier logo]()
$330
This Expedia deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/131:24 pm
BOI
- ORD
1 stop6h 28m
Multiple Airlines
Fri 8/218:17 pm
ORD
- BOI
1 stop18h 45m
Multiple Airlines
Deal found 6/18![Multiple Airlines logo]()
$331
This Alaska Airlines deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” 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 8/127:57 am
BOI
- ORD
1 stop10h 00m
Alaska Airlines
Wed 8/196:01 am
ORD
- BOI
1 stop9h 01m
Alaska Airlines
Deal found 6/16![Alaska Airlines logo]()
$335
This Booking.com deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” 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.
Wed 7/154:27 pm
BOI
- ORD
1 stop6h 32m
Multiple Airlines
Wed 7/229:57 pm
ORD
- BOI
1 stop15h 32m
Multiple Airlines
Deal found 6/17![Multiple Airlines logo]()
$336
This American Airlines deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” 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 7/153:54 pm
BOI
- ORD
1 stop7h 56m
American Airlines
Tue 7/2111:30 am
ORD
- BOI
Nonstop3h 50m
American Airlines
Deal found 6/15![American Airlines logo]()
$340
This American Airlines deal was found by Cheapflights users on 6/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/82:58 pm
BOI
- ORD
Nonstop3h 51m
American Airlines
Sat 8/155:00 am
ORD
- BOI
1 stop7h 16m
American Airlines
Deal found 6/19![American Airlines logo]()
$343
This Southwest deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” 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 9/92:40 pm
BOI
- MDW
1 stop7h 10m
Southwest
Tue 9/155:20 pm
MDW
- BOI
1 stop7h 00m
Southwest
Deal found 6/17![Southwest logo]()
$345
This Booking.com deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” 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.
Wed 7/154:27 pm
BOI
- ORD
1 stop6h 32m
Multiple Airlines
Sat 7/189:57 pm
ORD
- BOI
1 stop15h 32m
Multiple Airlines
Deal found 6/17![Multiple Airlines logo]()
$347
This CheapOair deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” 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 7/141:24 pm
BOI
- ORD
1 stop6h 28m
Frontier
Mon 7/279:57 pm
ORD
- BOI
1 stop15h 32m
Frontier
Deal found 6/17![Frontier logo]()
$348
This Booking.com deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” 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.
Mon 7/134:27 pm
BOI
- ORD
1 stop6h 32m
Multiple Airlines
Wed 7/159:57 pm
ORD
- BOI
1 stop15h 32m
Multiple Airlines
Deal found 6/17![Multiple Airlines logo]()
$349
This Delta deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” 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 8/128:59 am
BOI
- ORD
2 stops11h 31m
Delta
Wed 8/197:44 pm
ORD
- BOI
1 stop5h 15m
Delta
Deal found 6/16![Delta logo]()
$350
This Southwest deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/57:05 am
BOI
- MDW
1 stop6h 40m
Southwest
Sat 8/86:55 am
MDW
- BOI
1 stop6h 20m
Southwest
Deal found 6/18![Southwest logo]()
$355
Best flights from Boise to ChicagoDiscover carefully curated flight deals from Boise to Chicago that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 20, 2026.
Discover carefully curated flight deals from Boise to Chicago that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 20, 2026.
This Alaska Airlines deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/236:49 pm
BOI
- ORD
1 stop17h 33m
Alaska Airlines
Mon 9/286:00 am
ORD
- BOI
1 stop7h 35m
Alaska Airlines
Deal found 6/18![Alaska Airlines logo]()
$335
This Delta deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” 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 9/93:28 pm
BOI
- ORD
1 stop7h 29m
Delta
Tue 9/152:05 pm
ORD
- BOI
2 stops9h 20m
Delta
Deal found 6/17![Delta logo]()
$350
This Southwest deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/127:05 am
BOI
- MDW
1 stop6h 40m
Southwest
Wed 8/194:45 pm
MDW
- BOI
1 stop6h 40m
Southwest
Deal found 6/18![Southwest logo]()
$355
This United Airlines deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” 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 7/235:46 pm
BOI
- ORD
1 stop5h 58m
United Airlines
Sun 7/268:40 am
ORD
- BOI
Nonstop3h 52m
United Airlines
Deal found 6/17![United Airlines logo]()
$400
This Alaska Airlines deal was found by Cheapflights users on 6/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/128:00 pm
BOI
- ORD
1 stop16h 21m
Alaska Airlines
Wed 8/196:01 am
ORD
- BOI
1 stop9h 01m
Alaska Airlines
Deal found 6/19![Alaska Airlines logo]()
$345
This Delta deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” 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 8/128:59 am
BOI
- ORD
2 stops11h 31m
Delta
Wed 8/192:00 pm
ORD
- BOI
2 stops9h 30m
Delta
Deal found 6/16![Delta logo]()
$355
This Southwest deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” 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 7/153:00 pm
BOI
- MDW
1 stop7h 45m
Southwest
Wed 7/221:10 pm
MDW
- BOI
Nonstop3h 35m
Southwest
Deal found 6/17![Southwest logo]()
$382
This Delta deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” 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 9/47:28 pm
BOI
- ORD
2 stops12h 02m
Delta
Wed 9/912:50 pm
ORD
- BOI
1 stop6h 50m
Delta
Deal found 6/16![Delta logo]()
$380
This Alaska Airlines deal was found by Cheapflights users on 6/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/276:40 am
BOI
- ORD
1 stop9h 10m
Alaska Airlines
Wed 10/287:20 am
ORD
- BOI
2 stops15h 41m
Alaska Airlines
Deal found 6/19![Alaska Airlines logo]()
$383
This Southwest deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” 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 7/318:45 am
BOI
- MDW
Nonstop3h 20m
Southwest
Sat 8/15:10 am
MDW
- BOI
1 stop7h 20m
Southwest
Deal found 6/16![Southwest logo]()
$395
This Delta deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/215:30 am
BOI
- MDW
1 stop6h 39m
Delta
Fri 7/247:06 pm
MDW
- BOI
1 stop5h 40m
Delta
Deal found 6/20![Delta logo]()
$385
This Southwest deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” 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.
Sun 8/97:50 pm
BOI
- MDW
1 stop7h 40m
Southwest
Thu 8/1311:40 am
MDW
- BOI
Nonstop3h 30m
Southwest
Deal found 6/16![Southwest logo]()
$395
This Delta deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/235:20 am
BOI
- MDW
1 stop6h 47m
Delta
Mon 9/287:13 pm
MDW
- BOI
1 stop5h 42m
Delta
Deal found 6/18![Delta logo]()
$385
This Southwest deal was found by Cheapflights users on 6/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/38:45 am
BOI
- MDW
Nonstop3h 20m
Southwest
Fri 7/102:40 pm
MDW
- BOI
Nonstop3h 35m
Southwest
Deal found 6/19![Southwest logo]()
$417
This Delta deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” 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 8/1411:10 pm
BOI
- ORD
2 stops10h 32m
Delta
Wed 8/191:59 pm
ORD
- BOI
2 stops11h 00m
Delta
Deal found 6/16![Delta logo]()
$385
This Delta deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” 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 9/2312:14 pm
BOI
- ORD
2 stops8h 33m
Delta
Mon 9/288:27 am
ORD
- BOI
2 stops10h 23m
Delta
Deal found 6/15![Delta logo]()
$385
This Delta deal was found by Cheapflights users on 6/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/911:12 am
BOI
- ORD
1 stop6h 07m
Delta
Sat 8/154:45 pm
ORD
- BOI
1 stop7h 01m
Delta
Deal found 6/19![Delta logo]()
$385
This Delta deal was found by Cheapflights users on 6/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/711:10 pm
BOI
- ORD
2 stops10h 27m
Delta
Wed 9/97:45 am
ORD
- BOI
2 stops10h 34m
Delta
Deal found 6/19![Delta logo]()
$395
Last-minute flights from Boise to ChicagoDiscover last-minute flight deals from Boise to Chicago. Data last updated June 20, 2026 and is based on user searches.
Discover last-minute flight deals from Boise to Chicago. Data last updated June 20, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/253:30 pm
BOI
- ORD
Nonstop3h 50m
United Airlines
Tue 6/306:00 am
ORD
- BOI
1 stop8h 34m
United Airlines
Deal found 6/18![United Airlines logo]()
$426
This Alaska Airlines deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” 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 6/294:27 pm
BOI
- ORD
1 stop6h 32m
Alaska Airlines
Fri 7/38:20 pm
ORD
- BOI
1 stop14h 20m
Alaska Airlines
Deal found 6/16![Alaska Airlines logo]()
$371
This American Airlines deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” 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.
Mon 6/293:12 pm
BOI
- ORD
Nonstop3h 47m
American Airlines
Fri 7/311:30 am
ORD
- BOI
Nonstop3h 50m
American Airlines
Deal found 6/16![American Airlines logo]()
$411
This Delta deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/311:45 pm
BOI
- MDW
1 stop9h 24m
Delta
Wed 7/156:00 am
MDW
- BOI
1 stop7h 53m
Delta
Deal found 6/15![Delta logo]()
$380
This Delta deal was found by Cheapflights users on 6/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/311:45 pm
BOI
- MDW
1 stop9h 24m
Delta
Sat 7/111:49 pm
MDW
- BOI
1 stop8h 13m
Delta
Deal found 6/19![Delta logo]()
$397
This Delta deal was found by Cheapflights users on 6/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/311:45 pm
BOI
- MDW
2 stops12h 01m
Delta
Fri 7/1012:41 pm
MDW
- BOI
1 stop10h 16m
Delta
Deal found 6/19![Delta logo]()
$402
This Delta deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” 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 7/45:30 am
BOI
- MDW
2 stops10h 37m
Delta
Wed 7/156:00 am
MDW
- BOI
1 stop7h 53m
Delta
Deal found 6/15![Delta logo]()
$385
This Southwest deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” 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 7/154:20 pm
BOI
- MDW
1 stop6h 50m
Southwest
Tue 7/216:10 am
MDW
- BOI
1 stop8h 15m
Southwest
Deal found 6/15![Southwest logo]()
$345
This Southwest deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” 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 7/153:00 pm
BOI
- MDW
1 stop7h 45m
Southwest
Wed 7/221:10 pm
MDW
- BOI
Nonstop3h 35m
Southwest
Deal found 6/17![Southwest logo]()
$382
This Southwest deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” 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 7/168:45 am
BOI
- MDW
Nonstop3h 20m
Southwest
Thu 7/236:40 pm
MDW
- BOI
1 stop8h 10m
Southwest
Deal found 6/16![Southwest logo]()
$395
This Delta deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/215:30 am
BOI
- MDW
1 stop6h 39m
Delta
Fri 7/247:06 pm
MDW
- BOI
1 stop5h 40m
Delta
Deal found 6/16![Delta logo]()
$375
This Southwest deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” 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 7/318:45 am
BOI
- MDW
Nonstop3h 20m
Southwest
Sat 8/14:50 pm
MDW
- BOI
2 stops8h 40m
Southwest
Deal found 6/16![Southwest logo]()
$400
One-way flights from Boise to ChicagoSearch for one-way flight options from Boise to Chicago. Find affordable one-way fares based on user searches. Data last updated June 20, 2026.
Search for one-way flight options from Boise to Chicago. Find affordable one-way fares based on user searches. Data last updated June 20, 2026.
This Frontier deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” 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.
Tue 9/1512:59 pm
BOI
- ORD
1 stop7h 36m
Frontier
Deal found 6/17![Frontier logo]()
$123
This Frontier deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/131:24 pm
BOI
- ORD
1 stop6h 28m
Frontier
Deal found 6/18![Frontier logo]()
$133
This Frontier deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” 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.
Tue 7/141:24 pm
BOI
- ORD
1 stop6h 28m
Frontier
Deal found 6/15![Frontier logo]()
$135
This Priceline deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1712:59 pm
BOI
- ORD
1 stop7h 36m
Frontier
Deal found 6/20![Frontier logo]()
$138
This Frontier deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/143:52 pm
BOI
- ORD
1 stop12h 50m
Frontier
Deal found 6/18![Frontier logo]()
$139
This Frontier deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” 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 9/113:52 pm
BOI
- ORD
1 stop12h 50m
Frontier
Deal found 6/15![Frontier logo]()
$140
This Frontier deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” 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 9/1012:59 pm
BOI
- ORD
1 stop7h 36m
Frontier
Deal found 6/15![Frontier logo]()
$149
This Kiwi.com deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/181:24 pm
BOI
- ORD
1 stop23h 12m
Frontier
Deal found 6/20![Frontier logo]()
$151
This Alaska Airlines deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” 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 8/127:57 am
BOI
- ORD
1 stop10h 00m
Alaska Airlines
Deal found 6/16![Alaska Airlines logo]()
$153
This Delta deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/155:30 am
BOI
- MDW
1 stop6h 40m
Delta
Deal found 6/15![Delta logo]()
$173
This Delta deal was found by Cheapflights users on 6/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/162:14 pm
BOI
- MDW
1 stop7h 11m
Delta
Deal found 6/19![Delta logo]()
$178
This Southwest deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/167:05 am
BOI
- MDW
2 stops9h 05m
Southwest
Deal found 6/18![Southwest logo]()
$183
Find flight deals from Boise to Chicago
Discover tips and strategies to find the most affordable flight options for your journey from Boise (BOI) to Chicago (CHI). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated June 20, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $330 (Travelocity) |
One-way from | $123 (Frontier) |
Popular in | March |
Cheapest in | February |
Average price | $412 |
Good round-trip deal | $423 or less |
Good one-way deal | $279 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Boise 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 June 20, 2026.
Use the filters below to find and compare flights from Boise to Chicago that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
BoiseChicago
BOI - ORD
BOIORD
Boise Air Term. Gowen Fld
Wed 9/23
6:49 pm-1:22 pm
1 stop17h 33m
Chicago O'Hare Intl
Mon 9/28
6:00 am-12:35 pm
1 stop7h 35m
$335
BoiseChicago
BOI - ORD
BOIORD
Boise Air Term. Gowen Fld
Wed 8/12
8:00 pm-1:21 pm
1 stop16h 21m
Chicago O'Hare Intl
Wed 8/19
6:01 am-2:02 pm
1 stop9h 01m
$345
BoiseChicago
BOI - ORD
BOIORD
Boise Air Term. Gowen Fld
Wed 9/9
3:28 pm-11:57 pm
1 stop7h 29m
Chicago O'Hare Intl
Tue 9/15
2:05 pm-10:25 pm
2 stops9h 20m
$350
BoiseChicago
BOI - MDW
BOIMDW
Boise Air Term. Gowen Fld
Wed 8/12
7:05 am-2:45 pm
1 stop6h 40m
Chicago Midway
Wed 8/19
4:45 pm-10:25 pm
1 stop6h 40m
$355
BoiseChicago
BOI - ORD
BOIORD
Boise Air Term. Gowen Fld
Wed 8/12
8:59 am-9:30 pm
2 stops11h 31m
Chicago O'Hare Intl
Wed 8/19
2:00 pm-10:30 pm
2 stops9h 30m
$355
BoiseChicago
BOI - ORD
BOIORD
Boise Air Term. Gowen Fld
Fri 9/4
7:28 pm-8:30 am
2 stops12h 02m
Chicago O'Hare Intl
Wed 9/9
12:50 pm-6:40 pm
1 stop6h 50m
$380
BoiseChicago
BOI - MDW
BOIMDW
Boise Air Term. Gowen Fld
Wed 7/15
3:00 pm-11:45 pm
1 stop7h 45m
Chicago Midway
Wed 7/22
1:10 pm-3:45 pm
Nonstop3h 35m
$382
BoiseChicago
BOI - ORD
BOIORD
Boise Air Term. Gowen Fld
Tue 10/27
6:40 am-4:50 pm
1 stop9h 10m
Chicago O'Hare Intl
Wed 10/28
7:20 am-10:01 pm
2 stops15h 41m
$383
BoiseChicago
BOI - MDW
BOIMDW
Boise Air Term. Gowen Fld
Tue 7/21
5:30 am-1:09 pm
1 stop6h 39m
Chicago Midway
Fri 7/24
7:06 pm-11:46 pm
1 stop5h 40m
$385
BoiseChicago
BOI - MDW
BOIMDW
Boise Air Term. Gowen Fld
Wed 9/23
5:20 am-1:07 pm
1 stop6h 47m
Chicago Midway
Mon 9/28
7:13 pm-11:55 pm
1 stop5h 42m
$385
Showing 1-10 of 39 resultsSorted by cheapest first
Compare providers for flights from Boise to Chicago
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Boise to Chicago in June.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Boise-Chicago flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Boise-Chicago flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Boise-Chicago flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Boise-Chicago flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Boise-Chicago flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Boise to Chicago
Have a flexible travel schedule? Discover the best time to fly to Chicago from Boise with our price prediction graph.
BOI-CHI
BOI-ORD
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 Boise to Chicago
BOI-CHI
BOI-ORD
BOI-MDW
What is the cheapest month to book a flight from Boise to Chicago?
Currently, August is the cheapest month in which you can book a flight from Boise to Chicago (average of $115). Flying from Boise to Chicago in March is currently the most expensive (average of $268). 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 BOI to CHI?
Find hourly flight availability from Boise 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 June 20, 2026.
It’s typically best to fly out from Boise to Chicago at noon. Doing so could potentially save you 25% on the flight price compared to flying in the morning, which is usually more expensive.
Weekly flight availability from Boise to Chicago
Explore weekly flight availability from Boise to Chicago. 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 June 20, 2026.
The most flights from BOI to CHI are scheduled on a Monday (10 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (9 on average).
How much does it cost to fly round-trip from Boise to Chicago?
How far ahead should I book a flight from Boise to Chicago?
To ensure you get the cheapest price possible for a flight from Boise to Chicago, you should look to book at least 90 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
Reviews of airlines servicing Chicago
Get insights into the airlines that provide service to Chicago. 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 Chicago. Reviews last updated June 20, 2026.
Get a feel of what it's like to fly with Alaska Airlines,Southwest, andDelta from Boise to Chicago by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
7.8
Overall
7.9
Crew
8.5
Boarding
8.1
Food
7.1
Entertainment
7.0
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Comfort
7.8
Overall
7.9
Crew
8.5
Boarding
8.1
Food
7.1
Entertainment
7.0
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Comfort
7.8
Overall
7.9
Crew
8.5
Boarding
8.1
Food
7.1
Entertainment
7.0
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Comfort
7.8
Overall
7.9
Crew
8.5
Boarding
8.1
Food
7.1
Entertainment
7.0
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Comfort
7.8
Overall
7.9
Crew
8.5
Boarding
8.1
Food
7.1
Entertainment
7.0
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Comfort
7.8
Overall
7.9
Crew
8.5
Boarding
8.1
Food
7.1
Entertainment
7.0
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Related info for your journey
Find useful and relevant information for your journey from Boise 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
Hammond
Porter
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Other flights to Chicago
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Complete your trip
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Search flights from Boise to Chicago by cabin class
Find flights from Boise to Chicago, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Boise and Chicago flights
Browse other Boise and Chicago flight options. Last updated on June 20, 2026.
Other flights from Boise
Browse through other flights departing from Boise. Flights are based on user searches made on Cheapflights and were last updated on June 20, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 5 airlines flying from Boise to Chicago
Discover the top 5 airlines that operate flights from Boise 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 June 20, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$230 | Average$363 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$234 | Average$395 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$243 | Average$465 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$269 | Average$378 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$298 | Average$390 | FlexibilityNo cancel fee | On-time75% |