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
$385
Usually Costs
$385 – $445
Lowest We've Seen
$177
Based on 4,429 price pointshigh confidence
Monthly Price Guide
Jan
$437
Feb
$437
Mar
$437
Apr
$529
May
$392
Jun
$379
Jul
$385
Aug
$379
Sep
$437
Oct
$445
Nov
$437
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 June, when fares average around $379. The most expensive month tends to be April at around $529. For the best deals, consider flying in June, August, July.
Cheapest Fare Found (Last 90 Days)
The lowest round-trip price available on each day we checked
Best: $19468 price checksWorst: $317