Route Price Intelligence
Cheap Flights From St. Louis to Boston
Live pricing benchmarks, monthly patterns, and historical lows for this route.
Typical Price
$405
Deals From
$322
Usually Costs
$322 – $461
Lowest We've Seen
$160
Based on 3,818 price pointshigh confidence
Monthly Price Guide
Jan
$458
Feb
$461
Mar
$481
Apr
$350
May
$242
Jun
$331
Jul
$356
Aug
$327
Sep
$439
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: $16071 price checksWorst: $221