Direct flights from Dulles to St Louis

Did you mean Flights from St Louis to Dulles?

Dulles

United States

IAD

Washington Dulles International Airport

St Louis

United States

STL

Lambert St Louis International Airport

Route: Nonstop service available
Distance: 694 miles
Marketing airlines: 5 airlines
Aircraft: 2 aircraft types
Dates: Oct 19, 2026 – Oct 10, 2027

Observed award fares

A sample of one-way prices for one traveler from Roame’s fare cache. Points, fees, and seats describe the same observation. Availability can change; confirm with the loyalty program before transferring points.

Departure window: 2026-10-23 – 2026-11-21.

No recent fares appear in this limited preview. This does not mean the route is sold out. Use the search controls to check other dates and routes.

Dulles to St Louis route overview

Washington Dulles International Airport (IAD) serves Dulles; Lambert St Louis International Airport (STL) serves St Louis.

The airports are 694 miles apart by great-circle distance.

Roame's current schedule feed shows nonstop service from IAD to STL.

Marketing airlines listed in the current schedule, including codeshare sellers, are Avianca (AV), Copa Airlines (CM), Lufthansa (LH), Brussels Airlines (SN) and United Airlines (UA). This list does not identify the operating airline for each flight; check the flight details before booking.

Published schedule dates span Oct 19, 2026 – Oct 10, 2027.

Marketing airlines on the Dulles to St Louis route

These are marketing airlines, including codeshare sellers. This list does not identify the operating airline for each flight; check the flight details before booking.