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
$349
Deals From
$277
Usually Costs
$277 – $351
Lowest We've Seen
$136
Based on 8,319 price pointshigh confidence
Monthly Price Guide
Jan
$351
Feb
$351
Mar
$351
Apr
$236
May
$250
Jun
$277
Jul
$317
Aug
$317
Sep
$351
Oct
$351
Nov
$351
Dec
$351
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 April, when fares average around $236. The most expensive month tends to be September at around $351. For the best deals, consider flying in April, May, June.
Cheapest Fare Found (Last 90 Days)
The lowest round-trip price available on each day we checked
Best: $14089 price checksWorst: $180