MAD to SEA Route Guide
Madrid, Spain → Seattle, United States
Quick answer
LEMD (Madrid, Spain) to KSEA (Seattle, United States) is a 4,603 NM (8,525 km / 5,297 mi) great-circle route with an initial bearing of 322° (NW). Typical cruise altitude FL410, expected flight time 10h 5m, common aircraft: Boeing 777-300ER, Airbus A350-900, Boeing 787-9.
Distance
4,603 NM
8,525 km / 5,297 mi
Initial Bearing
322° (NW)
True heading at departure
Typical Cruise
FL410
41,000 ft
Block Time
10h 5m
Typical jet, no wind correction
Fuel Estimate
15,309 kg
Single-aisle equivalent + reserve
Departure Elevation
2,000 ft
LEMD
Arrival Elevation
433 ft
KSEA
What aircraft fly this route?
For a 4,603 NM mission, operators typically deploy:
- Boeing 777-300ER
- Airbus A350-900
- Boeing 787-9
- Airbus A330-900neo
Weather considerations
Pilots flying MAD-SEA should brief METARs and TAFs at both ends, plus any en-route SIGMETs. On this long-range mission, plan for an alternate within fuel reserves and review oceanic / NAT track procedures if applicable.
Frequently asked questions
What is the distance between MAD and SEA?
4,603 nautical miles (8,525 km / 5,297 statute miles) great-circle.
How long is the flight from Madrid to Seattle?
Approximately 10h 5m block-to-block for a typical commercial jet, depending on aircraft type and winds.
What aircraft typically fly MAD-SEA?
Common types include Boeing 777-300ER, Airbus A350-900, Boeing 787-9, Airbus A330-900neo depending on operator and demand.
What altitude do flights cruise at?
Most flights at this distance cruise around FL410 (41,000 ft), though winds and traffic affect filed altitude.
What initial heading is the route?
322° true (NW). Track varies along the route due to great-circle curvature.
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