Route Price Intelligence
Cheap Flights From St. Louis to Boise
Live pricing benchmarks, monthly patterns, and historical lows for this route.
Typical Price
$437
Deals From
$399
Usually Costs
$399 – $445
Lowest We've Seen
$177
Based on 6,950 price pointshigh confidence
Monthly Price Guide
Jan
$437
Feb
$437
Mar
$580
Apr
$381
May
$383
Jun
$406
Jul
$437
Aug
$426
Sep
$437
Oct
$445
Nov
$445
Dec
$445
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 $381. The most expensive month tends to be March at around $580. For the best deals, consider flying in April, May, June.
Cheapest Fare Found (Last 90 Days)
The lowest round-trip price available on each day we checked
Best: $18981 price checksWorst: $317