Flights to Southern Idaho from Chicago - ￥11,710

View ￥11,710 flight on Sat, Aug 30, 2025Opens in a new window

Popular airlines from Chicago to Southern Idaho

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Cheap Flights from Chicago to Southern Idaho (CHI-IDA)

Prices were available within the past 7 days and start at ￥11,710 for one-way flights and ￥39,920 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Sat, Aug 2 - Fri, Aug 8
ORD
Chicago
WYS
West Yellowstone
￥39,920 Roundtrip, found 1 day ago
￥39,920
Roundtrip
found 1 day ago
Select Delta flight, departing Sat, Aug 2 from Chicago to West Yellowstone, returning Fri, Aug 8, priced at ￥39,920 found 1 day ago
Delta
Sat, Aug 2 - Tue, Aug 5
ORD
Chicago
WYS
West Yellowstone
￥42,180 Roundtrip, found 1 day ago
￥42,180
Roundtrip
found 1 day ago
Select Delta flight, departing Sat, Aug 2 from Chicago to West Yellowstone, returning Tue, Aug 5, priced at ￥42,180 found 1 day ago
Delta
Sat, Aug 2 - Thu, Aug 7
ORD
Chicago
WYS
West Yellowstone
￥57,470 Roundtrip, found 1 day ago
￥57,470
Roundtrip
found 1 day ago
Select Delta flight, departing Sat, Aug 2 from Chicago to West Yellowstone, returning Thu, Aug 7, priced at ￥57,470 found 1 day ago
Delta
Sat, Aug 2 - Mon, Aug 11
ORD
Chicago
WYS
West Yellowstone
￥62,740 Roundtrip, found 1 day ago
￥62,740
Roundtrip
found 1 day ago
Select Delta flight, departing Sat, Aug 2 from Chicago to West Yellowstone, returning Mon, Aug 11, priced at ￥62,740 found 1 day ago
Delta
Fri, Aug 1 - Fri, Aug 8
ORD
Chicago
WYS
West Yellowstone
￥63,360 Roundtrip, found 1 day ago
￥63,360
Roundtrip
found 1 day ago
Select Delta flight, departing Fri, Aug 1 from Chicago to West Yellowstone, returning Fri, Aug 8, priced at ￥63,360 found 1 day ago
United
Wed, Aug 13 - Mon, Aug 18
ORD
Chicago
SUN
Sun Valley
￥79,420 Roundtrip, found 5 days ago
￥79,420
Roundtrip
found 5 days ago
Select United flight, departing Wed, Aug 13 from Chicago to Sun Valley, returning Mon, Aug 18, priced at ￥79,420 found 5 days ago

Find the cheapest month to fly from Chicago (CHI) to Boise (BOI)

October is typically the cheapest month to fly

From ￥18,041 - ￥62,297 per traveler.

Graph displaying average flight prices per month

*Available to Expedia members.