Back to CalculatorRoute ID: IAD-SEA
Flight Distance from Dulles (IAD) to Seattle (SEA)
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
3,702 km2,300 miles • 1,999 NM
Destination Airport
KSEASEA
Seattle, United States
Seattle–Tacoma International Airport
Direct Distance
3,702 km
2,300 Statute Miles
1,999 Nautical Miles
Commercial Flight
4h 51m
Est. non-stop flight duration (~850 km/h cruising speed + buffer)
CO₂ Footprint
333 kg
Estimated carbon footprint per economy passenger (~90g CO₂/km)
Initial Heading
300° True
Initial compass bearing towards destination
Estimated Travel Duration by Aircraft Class
Commercial Jet (Boeing 787 / A350)
4h 51m
Speed: ~850 km/h (459 knots)
Business Jet (Gulfstream G650)
4h 31m
Speed: ~920 km/h (496 knots)
Turboprop Aircraft (ATR-72 / Q400)
7h 37m
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
Seattle–Tacoma International Airport (SEA)
- City / Country: Seattle, United States
- ICAO Code: KSEA
- Coordinates: 47.4479°, -122.3103°
- Timezone: America/Los_Angeles
- Elevation: 433 ft
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