Route Price Intelligence
Cheap Flights From St. Louis to Boston
Live pricing benchmarks, monthly patterns, and historical lows for this route.
Typical Price
$418
Deals From
$320
Usually Costs
$320 – $461
Lowest We've Seen
$160
Based on 4,738 price pointshigh confidence
Monthly Price Guide
Jan
$461
Feb
$461
Mar
$481
Apr
$350
May
$242
Jun
$331
Jul
$356
Aug
$322
Sep
$441
Oct
$461
Nov
$461
Dec
$461
Cheapest Average Expensive
Best Time to Fly from St. Louis to Boston
The cheapest time to fly from St. Louis to Boston is typically May, when fares average around $242. The most expensive month tends to be March at around $481. For the best deals, consider flying in May, August, June.
Cheapest Fare Found (Last 90 Days)
The lowest round-trip price available on each day we checked
Best: $16076 price checksWorst: $222