Empty leg King County Boeing Field
Book empty leg King County Boeing Field flights as one-way seats on repositioning aircraft. The field sits at 21 feet elevation with a 10,007-foot runway. Quotes are estimates from FAA Part 135 operators, not listed prices.
Empty leg King County Boeing Field requests start with the schedule, not the price. An empty leg exists only when a jet must move without passengers between two points. Repositioning flights, ferry legs, and one-way drop-offs create the inventory. The airport sits at 21 feet elevation, with a 10,007-foot runway, so most business jets can use it without performance limits. When you call, give the date window and the route, and the desk can check what is actually flying that way.
King County International Airport - Boeing Field is the reliever field just south of downtown Seattle. The field's four FBOs handle private and charter traffic, and the Boeing Company has long used the field for flight testing and delivery. For a traveler, that means the private side of Seattle is separate from the airline terminal at Sea-Tac. Empty legs into BFI tend to appear on Fridays and Sundays, when owners move aircraft back toward their home base. The pattern is seasonal and never guaranteed.
FAA Part 135 operators fly the aircraft and hold operational control on every leg. That matters for empty legs because the operator decides whether a given ferry flight can carry passengers, and the answer can change close to departure. This site works as a charter broker and arranges the trip; it does not own or operate aircraft. DOT Part 295 rules govern how brokers act as agents for the customer. If the leg touches Canada, CBP and customs clearance apply at the arrival airport.
Boeing Field runway length
The longest runway at Boeing Field runs 10,007 feet at 21 feet elevation. That is enough pavement for large-cabin jets and most turboprops, with margin for a wet winter departure. Boeing Field has two parallel runways, and the tower assigns the active based on wind and traffic. When winter rain moves through, so does the braking action report, and the operator may adjust the departure slot. Ask for the runway in use and the estimated taxi time when you compare quotes.
| Runway | Long | Broad | Surface |
|---|---|---|---|
| 14R/32L | 10,007 ft | 200 ft | Asphalt |
| 14L/32R | 3,709 ft | 100 ft | Asphalt |
FBOs and ground handling at BFI
Four FBOs serve King County Boeing Field: Modern Aviation, Signature Aviation, Skyservice Seattle, and Vesper Aviation. Which one handles your leg depends on the operator's contract, so the FBO can change between quotes. Ground handling, fueling, and crew services are billed through the operator. Ask which FBO is assigned before you plan a car pickup.
Ground transport on the field is short, but traffic on the nearby highways is not. The airport sits minutes from I-5 and the industrial district south of downtown. Allow extra time on weekday afternoons when the port and stadium traffic builds. If the leg is international, CBP clearance happens on arrival and can add time at the FBO.
Best for
- Travelers flying one-way to or from Seattle who can move on short notice.
- Business trips where the return leg is already paid for by the operator's repositioning.
- Groups that fit a midsize or super-midsize jet and want to skip the airline terminal.
- Travelers comparing BFI against Sea-Tac for access to downtown and the Eastside.
| Class | Typical runway need | Here |
|---|---|---|
| Turboprop | 3,300 ft+ | Okay |
| Light jet | 4,000 ft+ | Okay |
| Midsize jet | 5,000 ft+ | Okay |
| Super-midsize jet | 5,200 ft+ | Okay |
| Heavy jet | 5,600 ft+ | Okay |
Weather and density altitude by season
Summer density altitude at Boeing Field reaches about 1,200 feet in July and 1,800 feet at the 115F peak. Those numbers are modest compared with mountain airports, so heat rarely limits a jet departure here. The bigger summer factor is wind and marine layer, which can shift arrival times. When a heat wave hits, the operator may still adjust payload for a short runway or a distant alternate.
Winter at BFI is wet, with 17 to 19 wet days in the coldest months and highs near 45 to 47F. Rain and low ceilings can slow the arrival flow, so build a buffer into a tight connection. The field's instrument approaches help in low weather, but the operator decides the minimums. If snow is in the forecast, ask whether deicing is available and how it affects the departure time.
| Month | High, avg | Wet days | DA value |
|---|---|---|---|
| Jan | 47°F | 17 | -800 ft |
| Feb | 47°F | 17 | -800 ft |
| Mar | 52°F | 15 | -400 ft |
| Apr | 57°F | 15 | -100 ft |
| May | 64°F | 10 | 400 ft |
| Jun | 70°F | 9 | 800 ft |
| Jul | 77°F | 3 | 1,200 ft |
| Aug | 77°F | 5 | 1,200 ft |
| Sep | 69°F | 11 | 700 ft |
| Oct | 60°F | 15 | 100 ft |
| Nov | 50°F | 18 | -600 ft |
| Dec | 45°F | 19 | -900 ft |
Access and getting to the field
Boeing Field sits about four miles south of downtown Seattle, close to I-5 and State Route 99. The drive from downtown is short when traffic cooperates and slow during the afternoon peak. From the Eastside, allow time across the lake bridges. The FBOs are on the field's west side; your operator will tell you which one to use. If your leg arrives from outside the US, CBP clearance is handled at the FBO and requires advance notice.
Private jet routes via King - Boeing
These 6 private jet routes span 199 to 2,129 nautical miles; one-way light jet estimates run $4,000 to $36,000.
Questions about this airport
How do I find an empty leg King County Boeing Field flight?
Start with a date window and a route. Empty leg King County Boeing Field inventory comes from repositioning flights, and most legs are posted within a few days of departure. The desk checks what FAA Part 135 operators are actually flying and sends estimates. There is no guaranteed list, and a leg can be withdrawn when the operator changes the schedule or fills the aircraft with a paying charter.
What does an empty leg to or from BFI cost?
Pricing is an estimate, not a published fare. An empty leg is usually priced below a standard one-way charter because the operator is already moving the aircraft. The final number depends on aircraft type, fuel, crew time, and FBO fees at the field. Ask for the all-in estimate, including ground handling at the assigned FBO, before you compare two quotes.
Which FBOs serve private jets at Boeing Field?
Four FBOs serve the field: Modern Aviation, Signature Aviation, Skyservice Seattle, and Vesper Aviation. The operator assigns one based on its contract and the aircraft type. Ground handling and fueling are arranged through that FBO. Ask which one is assigned before you book a car, because the terminals are on different parts of the field and the drive time differs.
Can a large-cabin jet use Boeing Field's 10,007-foot runway?
Yes, in most conditions. The runway is 10,007 feet at 21 feet elevation, which gives large-cabin jets room for a full-fuel departure. Summer density altitude peaks near 1,800 feet, still well within typical performance charts. The operator runs the final numbers for the actual temperature, wind, and weight. If a leg is weight-limited, the operator may cap payload or add a fuel stop.
How does weather affect empty legs at BFI?
Winter brings 17 to 19 wet days in the coldest months and highs near 45 to 47F, which can slow the arrival flow. Summer highs reach about 77F with density altitude near 1,200 feet. Low ceilings may push the operator to an alternate or a later slot. If your schedule is tight, ask about the forecast and the operator's weather minimums before you commit.
Who is responsible for the flight, the broker or the operator?
The FAA Part 135 operator flies the aircraft and holds operational control, including the decision to carry passengers on a ferry leg. The broker arranges the trip and acts as your agent under DOT Part 295 rules. This site does not own or operate aircraft. For international legs, CBP clearance is required, and the operator confirms the documents before departure.