Route Price Intelligence
Cheap Flights From Boise to Saint Louis
Live pricing benchmarks, monthly patterns, and historical lows for this route.
Typical Price
$437
Deals From
$402
Usually Costs
$402 – $446
Lowest We've Seen
$138
Based on 3,769 price pointshigh confidence
Monthly Price Guide
Jan
$437
Feb
$437
Mar
$445
Apr
$593
May
$392
Jun
$402
Jul
$426
Aug
$374
Sep
$437
Oct
$445
Nov
$437
Dec
$445
Cheapest Average Expensive
Best Time to Fly from Boise to Saint Louis
The cheapest time to fly from Boise to Saint Louis is typically August, when fares average around $374. The most expensive month tends to be April at around $593. For the best deals, consider flying in August, May, June.
Cheapest Fare Found (Last 90 Days)
The lowest round-trip price available on each day we checked
Best: $15968 price checksWorst: $270