Cheap Flights from St. Louis (STL) to Washington (IAD)

Places to stay in Washington

Flight Information for St. Louis → Washington

The St. Louis–Washington route connects two major travel hubs. Average flight time is approximately Varies by route, with several daily nonstop and connecting options. Major airlines include Multiple airlines.

Tips for Finding Cheap Flights

• Book 6–8 weeks in advance for the best fares.
• Try midweek or red-eye flights to save more.
• Set up FareFort alerts to catch fare drops instantly.

Popular Related Routes