Route Price Intelligence
Cheap Flights From Boston to Saint Louis
Live pricing benchmarks, monthly patterns, and historical lows for this route.
Typical Price
$341
Great Deal
Under $305
Typical Range
$305 – $446
Lowest We've Seen
$160
Based on 677 price pointshigh confidence
Monthly Price Guide
Jan
$305
Feb
$317
Mar
$452
Apr
$341
May
$341
Jun
$362
Jul
$278
Aug
$270
Sep
$314
Oct
$313
Nov
$320
Dec
$292
Cheapest Average Expensive
Best Time to Fly from Boston to Saint Louis
The cheapest time to fly from Boston to Saint Louis is typically August, when fares average around $270. The most expensive month tends to be March at around $452. For the best deals, consider flying in August, July, December.
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: November11,084 fares analyzedTypical low: $427
Other Destinations From Boston
Abidjan(ABJ)Albuquerque(ABQ)Acapulco(ACA)Accra(ACC)Izmir(ADB)Addis Ababa(ADD)Adelaide(ADL)Malaga(AGP)Aguascalientes(AGU)Auckland(AKL)Albany(ALB)Algiers(ALG)Ahmedabad(AMD)Amman(AMM)Amsterdam(AMS)Anchorage(ANC)Stockholm(ARN)Asuncion(ASU)Athens(ATH)Atlanta(ATL)Aruba(AUA)Abu Dhabi(AUH)Austin(AUS)Bahrain(BAH)