Route Price Intelligence
Cheap Flights From Washington, D.C. to Saint Louis
Live pricing benchmarks, monthly patterns, and historical lows for this route.
Typical Price
$346
Deals From
$270
Usually Costs
$270 – $351
Lowest We've Seen
$136
Based on 8,171 price pointshigh confidence
Monthly Price Guide
Jan
$251
Feb
$244
Mar
$262
Apr
$246
May
$330
Jun
$351
Jul
$351
Aug
$351
Sep
$351
Oct
$351
Nov
$366
Dec
$381
Cheapest Average Expensive
Best Time to Fly from Washington, D.C. to Saint Louis
The cheapest time to fly from Washington, D.C. to Saint Louis is typically February, when fares average around $244. The most expensive month tends to be December at around $381. For the best deals, consider flying in February, April, January.
Cheapest Fare Found (Last 90 Days)
The lowest round-trip price available on each day we checked
Best: $13661 price checksWorst: $163