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
$335
Deals From
$291
Usually Costs
$291 – $353
Lowest We've Seen
$139
Based on 8,380 price pointshigh confidence
Monthly Price Guide
Jan
$335
Feb
$348
Mar
$446
Apr
$239
May
$236
Jun
$310
Jul
$328
Aug
$325
Sep
$335
Oct
$335
Nov
$346
Dec
$336
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 $236. The most expensive month tends to be March at around $446. For the best deals, consider flying in May, April, June.
Cheapest Fare Found (Last 90 Days)
The lowest round-trip price available on each day we checked
Best: $13689 price checksWorst: $180