Back to CalculatorRoute ID: IAD-STL
Flight Distance from Dulles (IAD) to St Louis (STL)
Comprehensive aviation route data, direct distance, flight duration, CO₂ footprint, passport visa rules and interactive map.
Origin Airport
IADKIAD
Dulles, United States
Washington Dulles International Airport
Great Circle Path
1,118 km695 miles • 604 NM
Destination Airport
KSTLSTL
St Louis, United States
St. Louis Lambert International Airport
Direct Distance
1,118 km
695 Statute Miles
604 Nautical Miles
Commercial Flight
1h 49m
Est. non-stop flight duration (~850 km/h cruising speed + buffer)
CO₂ Footprint
101 kg
Estimated carbon footprint per economy passenger (~90g CO₂/km)
Initial Heading
273° True
Initial compass bearing towards destination
Estimated Travel Duration by Aircraft Class
Commercial Jet (Boeing 787 / A350)
1h 49m
Speed: ~850 km/h (459 knots)
Business Jet (Gulfstream G650)
1h 43m
Speed: ~920 km/h (496 knots)
Turboprop Aircraft (ATR-72 / Q400)
2h 39m
Speed: ~520 km/h (280 knots)
Passport & Visa Entry Requirements
🇺🇸 United States→🇺🇸 United States
Allowed Stay365 days
Passport Validity Required0 months
💡 Official Note: Freedom of movement within home country.
This information is provided for general guidance only and does not replace official verification with an embassy, consulate, or the IATA Travel Centre before you travel.
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Flight Path & Geodetic Arc Map
Great Circle Flight Arc Path
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Departure Airport Specs
Washington Dulles International Airport (IAD)
- City / Country: Dulles, United States
- ICAO Code: KIAD
- Coordinates: 38.9445°, -77.4558°
- Timezone: America/New_York
- Elevation: 312 ft
Arrival Airport Specs
St. Louis Lambert International Airport (STL)
- City / Country: St Louis, United States
- ICAO Code: KSTL
- Coordinates: 38.7487°, -90.3700°
- Timezone: America/Chicago
- Elevation: 618 ft
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