Route Price Intelligence
Cheap Flights From St. Louis to Philadelphia
Live pricing benchmarks, monthly patterns, and historical lows for this route.
Typical Price
$319
Great Deal
Under $268
Typical Range
$268 – $476
Lowest We've Seen
$136
Based on 271 price pointshigh confidence
Monthly Price Guide
Jan
$293
Feb
$298
Mar
$476
Apr
$476
May
$476
Jun
—
Jul
—
Aug
$330
Sep
$260
Oct
$250
Nov
$266
Dec
$281
Cheapest Average Expensive
Best Time to Fly from St. Louis to Philadelphia
The cheapest time to fly from St. Louis to Philadelphia is typically October, when fares average around $250. The most expensive month tends to be May at around $476. For the best deals, consider flying in October, September, November.
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: August17,615 fares analyzedTypical low: $383