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
$326
Deals From
$250
Usually Costs
$250 – $347
Lowest We've Seen
$139
Based on 4,333 price pointshigh confidence
Monthly Price Guide
Jan
$336
Feb
$336
Mar
$949
Apr
$325
May
$201
Jun
$230
Jul
$273
Aug
$280
Sep
$335
Oct
$336
Nov
$357
Dec
$346
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 May, when fares average around $201. The most expensive month tends to be March at around $949. For the best deals, consider flying in May, June, July.
Cheapest Fare Found (Last 90 Days)
The lowest round-trip price available on each day we checked
Best: $14075 price checksWorst: $180