BOS to SEA Route Guide
Boston, United States → Seattle, United States
Quick answer
KBOS (Boston, United States) to KSEA (Seattle, United States) is a 2,163 NM (4,006 km / 2,489 mi) great-circle route with an initial bearing of 296° (WNW). Typical cruise altitude FL350, expected flight time 5h 13m, common aircraft: Boeing 737-800, Airbus A320neo, Airbus A321neo.
Distance
2,163 NM
4,006 km / 2,489 mi
Initial Bearing
296° (WNW)
True heading at departure
Typical Cruise
FL350
35,000 ft
Block Time
5h 13m
Typical jet, no wind correction
Fuel Estimate
7,989 kg
Single-aisle equivalent + reserve
Departure Elevation
20 ft
KBOS
Arrival Elevation
433 ft
KSEA
What aircraft fly this route?
For a 2,163 NM mission, operators typically deploy:
- Boeing 737-800
- Airbus A320neo
- Airbus A321neo
- Boeing 737 MAX 8
Weather considerations
Pilots flying BOS-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 BOS and SEA?
2,163 nautical miles (4,006 km / 2,489 statute miles) great-circle.
How long is the flight from Boston to Seattle?
Approximately 5h 13m block-to-block for a typical commercial jet, depending on aircraft type and winds.
What aircraft typically fly BOS-SEA?
Common types include Boeing 737-800, Airbus A320neo, Airbus A321neo, Boeing 737 MAX 8 depending on operator and demand.
What altitude do flights cruise at?
Most flights at this distance cruise around FL350 (35,000 ft), though winds and traffic affect filed altitude.
What initial heading is the route?
296° true (WNW). Track varies along the route due to great-circle curvature.
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