Sammamish Departure KBFI local VFR procedures
Not for navigation. Verify against the official sources linked below before flight.
vfr departure Airport sponsor published effective 2026-09-25 verified 2026-10-07 (2 d ago)
Published by the airport sponsor; voluntary unless ATC assigns it. If ATC assigns this route to you in Class B, C or D airspace, that assignment is an ATC instruction and compliance is required (14 CFR 91.123) — and “unable” remains available to the pilot in command.
Left-downwind departure northeast via the I-90 bridge and north tip of Mercer Island toward Bellevue.
The route
- Make a left downwind departure until midfield, then turn right and overfly the I-90 bridge at Mercer Island
- Fly northeast bound toward north tip of Mercer Island and exit KBFI Class D airspace toward Bellevue
- Maintain AOB 1500' MSL until clear of the KBFI Class D
Where it actually is
North up. The sponsor names these landmarks and publishes no coordinate for any of them — everything positioned here is derived, and each coordinate's provenance is listed with its point below. Dashed markers are depicted: this site's reading of the written route, not published fixes.
- 1 Depart RWY 14, left downwind departure RWY 14 departure end The southeast end of 14R/32L — the surveyed 32L threshold. Runway heading 135 magnetic, 150 true. satellite Apple Maps coordinate: FAA airport record (NASR), surveyed runway threshold
- 2 Turn right at midfield KBFI midfield Midfield Boeing Field. Two staggered parallels: 14R/32L is 10,007 ft, 14L/32R only 3,709 ft and visibly narrower. Museum of Flight on the west side at the south end. satellite Apple Maps coordinate: FAA airport record (NASR), airport reference point
- 3 Overfly the I-90 bridge, AOB 1,500 MSL I-90 bridge at Mercer Island The west shore of Mercer Island, where the two I-90 floating bridges come ashore. satellite Apple Maps street view coordinate: OpenStreetMap contributors (ODbL)
- 4 Northeast bound, exiting the Class D North tip of Mercer Island The northern point of Mercer Island, about 0.9 NM north of the I-90 bridges. satellite Apple Maps street view coordinate: OpenStreetMap contributors (ODbL), northernmost point of the Mercer Island shoreline
- 5 Toward Bellevue Downtown Bellevue The high-rise cluster east of Lake Washington — the only skyline on that side of the water. satellite Apple Maps street view coordinate: OpenStreetMap contributors (ODbL)
7.9 NM over 5 route points. Bearings are magnetic, converted from true at each leg's midpoint through the WMM 2025 model this site ships (14.8°E here). Shoreline, lakes, highways and building outlines © OpenStreetMap contributors (ODbL). Class B and Class D boundaries: FAA Aeronautical Information Services.
Put it in the GPS
Route points become a route; reference points ship as waypoints only — a GPS that sequences you to a do-not-overfly marker has it backwards.
- GPX route
ForeFlight (GPX 1.1
rte), most tablet apps - user_waypoints.csv ForeFlight user waypoints — this procedure only
- Garmin FPL
Garmin Pilot, or the
\FPLfolder of a GTN/GNS card - KML Google Earth
- All KBFI landmarks every curated point at this field, in one ForeFlight file
When it applies
- Departing 14L or 14R — south flow Published under "Departures in South Flow" (route set of 9/25/2026)
Source text, verbatim
SAMMAMISH DEPARTURE: • Make a left downwind departure until midfield, then turn right and overfly the I-90 bridge at Mercer Island • Fly northeast bound toward north tip of Mercer Island and exit KBFI Class D airspace toward Bellevue • Maintain AOB 1500' MSL until clear of the KBFI Class D
The text above is the published source wording and is authoritative over any summary on this page.
Sources
- King County — Airport VFR Routes (9/25/2026) King County International Airport · retrieved 2026-10-07