Prices from $339 to $434
We'll show you the best deals by comparing tons of flights from Illinois to Boise across a wide range of airlines and travel agents. Compare the cheap flights along this route.
Travel information for Illinois to Boise
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Flights available forIllinois to Boise4
Cheapest flight forIllinois to Boise$338
Average flight price forIllinois to Boise$496
Flight time forIllinois to Boise4 hrs 11 mins