FCO to SEA Route Guide
Rome, Italy → Seattle, United States
Quick answer
LIRF (Rome, Italy) to KSEA (Seattle, United States) is a 4,929 NM (9,129 km / 5,672 mi) great-circle route with an initial bearing of 331° (NNW). Typical cruise altitude FL410, expected flight time 10h 46m, common aircraft: Boeing 777-300ER, Airbus A350-900, Boeing 787-9.
Distance
4,929 NM
9,129 km / 5,672 mi
Initial Bearing
331° (NNW)
True heading at departure
Typical Cruise
FL410
41,000 ft
Block Time
10h 46m
Typical jet, no wind correction
Fuel Estimate
16,287 kg
Single-aisle equivalent + reserve
Departure Elevation
15 ft
LIRF
Arrival Elevation
433 ft
KSEA
What aircraft fly this route?
For a 4,929 NM mission, operators typically deploy:
- Boeing 777-300ER
- Airbus A350-900
- Boeing 787-9
- Airbus A330-900neo
Weather considerations
Pilots flying FCO-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 FCO and SEA?
4,929 nautical miles (9,129 km / 5,672 statute miles) great-circle.
How long is the flight from Rome to Seattle?
Approximately 10h 46m block-to-block for a typical commercial jet, depending on aircraft type and winds.
What aircraft typically fly FCO-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?
331° true (NNW). Track varies along the route due to great-circle curvature.
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