Back to CalculatorRoute ID: CMB-SEA
Flight Distance from Colombo (CMB) to Seattle (SEA)
Comprehensive aviation route data, direct distance, flight duration, CO₂ footprint, passport visa rules and interactive map.
Origin Airport
CMBVCBI
Colombo, Sri Lanka
Bandaranaike International Colombo Airport
Great Circle Path
13,560 km8,426 miles • 7,322 NM
Destination Airport
KSEASEA
Seattle, United States
Seattle–Tacoma International Airport
Direct Distance
13,560 km
8,426 Statute Miles
7,322 Nautical Miles
Commercial Flight
16h 27m
Est. non-stop flight duration (~850 km/h cruising speed + buffer)
CO₂ Footprint
1,220 kg
Estimated carbon footprint per economy passenger (~90g CO₂/km)
Initial Heading
18° True
Initial compass bearing towards destination
Estimated Travel Duration by Aircraft Class
Commercial Jet (Boeing 787 / A350)
16h 27m
Speed: ~850 km/h (459 knots)
Business Jet (Gulfstream G650)
15h 14m
Speed: ~920 km/h (496 knots)
Turboprop Aircraft (ATR-72 / Q400)
26h 35m
Speed: ~520 km/h (280 knots)
Passport & Visa Entry Requirements
🌐 LK→🇺🇸 United States
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
Bandaranaike International Colombo Airport (CMB)
- City / Country: Colombo, Sri Lanka
- ICAO Code: VCBI
- Coordinates: 7.1808°, 79.8841°
- Timezone: Asia/Colombo
- Elevation: 30 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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