Route Price Intelligence
Cheap Flights From Boise to Saint Louis
Live pricing benchmarks, monthly patterns, and historical lows for this route.
Typical Price
$431
Deals From
$401
Usually Costs
$401 – $445
Lowest We've Seen
$138
Based on 6,799 price pointshigh confidence
Monthly Price Guide
Jan
$437
Feb
$437
Mar
$591
Apr
$345
May
$373
Jun
$425
Jul
$431
Aug
$428
Sep
$437
Oct
$437
Nov
$445
Dec
$437
Cheapest Average Expensive
Best Time to Fly from Boise to Saint Louis
The cheapest time to fly from Boise to Saint Louis is typically April, when fares average around $345. The most expensive month tends to be March at around $591. 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: $13882 price checksWorst: $250