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
$394
Usually Costs
$394 – $445
Lowest We've Seen
$138
Based on 6,754 price pointshigh confidence
Monthly Price Guide
Jan
$437
Feb
$437
Mar
$637
Apr
$451
May
$382
Jun
$412
Jul
$432
Aug
$426
Sep
$437
Oct
$445
Nov
$439
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 May, when fares average around $382. The most expensive month tends to be March at around $637. For the best deals, consider flying in May, June, August.
Cheapest Fare Found (Last 90 Days)
The lowest round-trip price available on each day we checked
Best: $13884 price checksWorst: $270