Route Price Intelligence
Cheap Flights From St. Louis to Boston
Live pricing benchmarks, monthly patterns, and historical lows for this route.
Typical Price
$334
Great Deal
Under $305
Typical Range
$305 – $448
Lowest We've Seen
$160
Based on 271 price pointshigh confidence
Monthly Price Guide
Jan
$305
Feb
$317
Mar
$456
Apr
$353
May
$334
Jun
$334
Jul
$353
Aug
$312
Sep
$297
Oct
$305
Nov
$305
Dec
$289
Cheapest Average Expensive
Best Time to Fly from St. Louis to Boston
The cheapest time to fly from St. Louis to Boston is typically December, when fares average around $289. The most expensive month tends to be March at around $456. For the best deals, consider flying in December, September, October.
Typical Price by Travel Month
Median round-trip fare for each month, with the typical price range, from our ongoing tracking of this route
Cheapest month: April6,414 fares analyzedTypical low: $456
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