Route Price Intelligence
Cheap Flights From St. Louis to Boise
Live pricing benchmarks, monthly patterns, and historical lows for this route.
Typical Price
$389
Deals From
$389
Usually Costs
$389 – $411
Lowest We've Seen
$177
Based on 8,487 price pointshigh confidence
Monthly Price Guide
Jan
$623
Feb
$326
Mar
$324
Apr
$290
May
$370
Jun
$397
Jul
$411
Aug
$397
Sep
$397
Oct
$411
Nov
$397
Dec
$411
Cheapest Average Expensive
Best Time to Fly from St. Louis to Boise
The cheapest time to fly from St. Louis to Boise is typically April, when fares average around $290. The most expensive month tends to be January at around $623. For the best deals, consider flying in April, March, February.
Cheapest Fare Found (Last 90 Days)
The lowest round-trip price available on each day we checked
Best: $17759 price checksWorst: $234