Flights from St Louis to Washington Dulles
STLIAD
St. Louis Lambert International Airport (St Louis, United States) → Washington Dulles International Airport (Dulles, United States)
Also known as St Louis.
- Nonstop
- 2h 9m
- Distance
- 1,118 km
- Frequency
- 7×/week
- One-way from
- $111
- Airlines
- United Airlines
Fares by month
One-way, per personLowest fares Aviasales travelers found in recent searches; some may include a connection. Prices change often — tap a month to see live fares.
Weekly schedule
Monday
- UA450608:00→11:102h 10mUnited Airlines
- UA363213:00→16:092h 9mUnited Airlines
Tuesday
- UA450608:00→11:102h 10mUnited Airlines
- UA363213:00→16:092h 9mUnited Airlines
Wednesday
- UA450608:00→11:102h 10mUnited Airlines
- UA363213:00→16:092h 9mUnited Airlines
Thursday
- UA450608:00→11:102h 10mUnited Airlines
- UA363213:00→16:092h 9mUnited Airlines
Friday
- UA450608:00→11:102h 10mUnited Airlines
- UA363213:00→16:092h 9mUnited Airlines
Saturday
- UA450608:00→11:102h 10mUnited Airlines
- UA363213:00→16:092h 9mUnited Airlines
Sunday
- UA450608:00→11:102h 10mUnited Airlines
- UA363213:00→16:092h 9mUnited Airlines
St Louis to Washington Dulles — frequently asked
- How long is the flight from St Louis to Washington Dulles?
- STL–IAD is 2h 9m nonstop, covering 1,118 km (695 mi).
- Which airlines fly nonstop from St Louis to Washington Dulles?
- United Airlines operates this route nonstop.
- How much is a flight from St Louis to Washington Dulles?
- One-way fares on STL–IAD recently started from $111 ($129 nonstop). The lowest recent fare is for travel in November 2026. Fares change daily, so check current prices before booking.
- How often do flights run from St Louis to Washington Dulles?
- The route is served 7 days a week (14 scheduled departures).