Back to CalculatorRoute ID: SEA-STL
Flight Distance from Seattle (SEA) to St Louis (STL)
Comprehensive aviation route data, direct distance, flight duration, CO₂ footprint, passport visa rules and interactive map.
Origin Airport
SEAKSEA
Seattle, United States
Seattle–Tacoma International Airport
Great Circle Path
2,744 km1,705 miles • 1,482 NM
Destination Airport
KSTLSTL
St Louis, United States
St. Louis Lambert International Airport
Direct Distance
2,744 km
1,705 Statute Miles
1,482 Nautical Miles
Commercial Flight
3h 44m
Est. non-stop flight duration (~850 km/h cruising speed + buffer)
CO₂ Footprint
247 kg
Estimated carbon footprint per economy passenger (~90g CO₂/km)
Initial Heading
99° True
Initial compass bearing towards destination
Estimated Travel Duration by Aircraft Class
Commercial Jet (Boeing 787 / A350)
3h 44m
Speed: ~850 km/h (459 knots)
Business Jet (Gulfstream G650)
3h 29m
Speed: ~920 km/h (496 knots)
Turboprop Aircraft (ATR-72 / Q400)
5h 47m
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
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
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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