Cheap flights from Washington to Saint Louis
Compare hundreds of airlines Washington–Saint Louis
Direct flightsCheapest: 2026-07 · 156 US$
Prices by date
156 US$
03/07
Airlines on this route
FAQ
What's the cheapest month to fly Washington to Saint Louis?
Usually 2026-07, from 156 USD.
Are there direct flights from Washington to Saint Louis?
We show both direct and connecting options — filter to compare.