Flights operate between Washington (IAD) and Saint Louis (STL).
1 airline operates this route with 2 flights daily flights.
Average flight time is 2h 23m - 2h 38m.
Route distance is 698 miles (1123 km).
Route Distance
698 miles (1123 km)
Average Duration
2h 23m - 2h 38m
Airlines Operating This Route
United Airlines
Flight Frequency
Daily Flights
2 flights
Weekly Flights
14
Typical Departure Time Ranges
Earliest Departure
08:40
Latest Departure
17:50
Route Intelligence Dashboard
Overall Connectivity Score
60
GoodRoute Diversity
1
Direct Routes
United Airlines serves 1 destination from IAD
Weekly Frequency
14
Weekly Flights
Trend: Stable
Top 1 Most Frequent Routes - Details
| Route | Weekly Flights | Duration | Distance | Reliability |
|---|---|---|---|---|
| IAD → Saint Louis (STL) (STL) | 14/week | 2h 23m - 2h 38m | 698 km | Moderate |
Flight Schedule & Filters
United Airlines flights from Washington (IAD) to Saint Louis (STL)
United Airlines operates scheduled nonstop flights between Washington (IAD) and Saint Louis (STL). United Airlines operates 2 flights daily flights on this route.• Flight Duration: 2h 23m - 2h 38m (average flight time)• Distance: 698 miles (1123 km) (air miles between airports)• Daily Flights: 2 flights (scheduled departures per day)
Washington (IAD)
US
Saint Louis (STL)
US
FLIGHT TIME
2h 23m - 2h 38m
FLIGHT DISTANCE
698 miles (1123 km)
2h 26m - 2h 27m
08:40
17:50
698 miles (1123 km)
January
1 (Show)
14
United Airlines Terminal Information & Contact
Departure Terminal - Washington (IAD)
Terminal: 1
Phone: 1-800-864-8331
Location: 1, Washington, US
Arrival Terminal - Saint Louis (STL)
Terminal: 1
Phone: 1-800-864-8331
Location: 1, St Louis, US
United Airlines Flight Schedule from Washington (IAD) to Saint Louis (STL)
| Flight | Airline | Departure | Arrival | Aircraft |
|---|---|---|---|---|
UA4427 |  United Airlines | 08:40 | 10:07:00 | Canadair (Bombardier) Regional Jet 550 |
UA4527 | United Airlines | 17:50 | 19:16:00 | Canadair (Bombardier) Regional Jet 550 |
United Airlines Monthly Flight Calendar
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United Airlines Terminal Information
Departure Terminal at Washington (IAD):
• Terminal : United Airlines operates from this terminal
Terminal 1:
• United Airlines Terminal Phone: 1-800-864-8331
Arrival Terminal at Saint Louis (STL):
• Terminal : United Airlines operates from this terminal
Terminal 1:
• United Airlines Terminal Phone: 1-800-864-8331
United Airlines Contact Information and Customer Services
United Airlines Address
233 S. Wacker Drive
Chicago, IL 60606, United States
Customer Service Phone
+1-800-864-8331Official Website
united.comFrequently Asked Questions
How many United Airlines flights operate from Washington (IAD) to St Louis (STL)?
United Airlines operates 2 flights from Washington (IAD) to St Louis (STL).
What city does St Louis (STL) airport serve?
St Louis (STL) airport serves Saint Louis, US.
How long is the United Airlines flight from Washington (IAD) to St Louis (STL)?
The flight duration is approximately 2h 23m - 2h 38m.
What is the distance from Washington (IAD) to St Louis (STL)?
The distance is 698 miles (1123 km).
What aircraft does United Airlines use on this route?
United Airlines uses Canadair (Bombardier) Regional Jet 550 on this route.
What are the earliest and latest United Airlines flight departure times?
The earliest United Airlines flight departs at 08:40 and the latest departs at 17:50.
Which terminal does United Airlines use at Washington (IAD)?
United Airlines flights from Washington (IAD) depart from Terminal 1. Terminal 1 phone: 1-800-864-8331.
View all United Airlines flights to Washington (IAD) →
Popular United Airlines routes from Washington include multiple destinations.
Route data verified regularly by Triposia Travel Research Team.