Route Price Intelligence
Cheap Flights From St. Louis to Boston
Live pricing benchmarks, monthly patterns, and historical lows for this route.
Typical Price
$441
Deals From
$362
Usually Costs
$362 – $461
Lowest We've Seen
$160
Based on 8,336 price pointshigh confidence
Monthly Price Guide
Jan
$461
Feb
$481
Mar
$620
Apr
$317
May
$295
Jun
$420
Jul
$441
Aug
$376
Sep
$461
Oct
$461
Nov
$467
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 $295. The most expensive month tends to be March at around $620. For the best deals, consider flying in May, April, August.
Cheapest Fare Found (Last 90 Days)
The lowest round-trip price available on each day we checked
Best: $16084 price checksWorst: $239