T-Mobile's Gulfstream G600 N625TM lands at Boeing Field from Kenmore Air Harbor

T-Mobile's Gulfstream G600, tail number N625TM, landed at King County International Airport, also known as Boeing Field, in Seattle on Monday, November 2, 2026, after a short flight from Kenmore Air Harbor LLC Seaplane Base. The aircraft departed Kenmore at 02:14 UTC and touched down at Boeing Field at 02:25 UTC, spending 11 minutes in the air. The great-circle distance between the two airports is 22 nautical miles, or 26 miles.

The flight covered 22 nm at an average ground speed of 120 knots, reaching a top speed of 261 knots and a highest altitude of 3,775 feet. Based on our estimate, the flight burned about 82 gallons of fuel and produced about 787 kilograms of carbon dioxide, roughly the same as driving a car 1,947 miles. The Gulfstream G600 is an ultra-long-range jet with a range of 6,600 nautical miles, a top speed of Mach 0.925, and a ceiling of 51,000 feet. It can seat up to 19 passengers.

The Gulfstream G600 is a stretched version of the G500 and has four passenger zones. The departure field's longest runway is 10,000 feet at an elevation of 14 feet. The arrival field's longest runway is 10,007 feet at an elevation of 21 feet.

This flight ended at T-Mobile's home base on file, Boeing Field. The last tracked landing at Seattle was earlier on the same day, so the aircraft had been on the ground for about 0 hours before this flight. In the 30 days before this flight, N625TM visited 2 airports in 1 country and flew about 4,100 nm. The longest leg in that period was Seattle to Teterboro on October 28, 2026, covering 2,081 nm. In the 24 hours before this landing, several other tracked aircraft also landed at Seattle, including a Bombardier Challenger 350 linked to Daniel Baty about 7 hours earlier, a Gulfstream G280 linked to Martin J. Lott about 6 hours earlier, a Bombardier Challenger 604 linked to Odom Corporation about 3 hours earlier, a Bombardier Challenger 300 linked to Troy Aikman about 3 hours earlier, and a Gulfstream G280 linked to PACCAR about 2 hours earlier. These are separate flights, and there is no indication that any of the owners met or traveled together.

T-Mobile US is one of the three big American wireless carriers. It is based in Bellevue, Washington, and Deutsche Telekom owns a controlling stake. The company grew out of VoiceStream Wireless, which Deutsche Telekom bought in 2001. The aircraft is registered to TVPX Aircraft Solutions as trustee, a common arrangement that keeps the owner's name off the public record. The tie to T-Mobile rests on the attribution and the TM in the tail number. Boeing Field is the main business jet airport near Bellevue, which is why it is listed as the home base.

In the 30 days before this flight, the aircraft flew 2 flights totaling 8.7 hours in the air. Our estimate shows those flights produced about 36,943 kilograms of carbon dioxide. The most recent tracked flight before this one was from Teterboro to Seattle on November 1, 2026, covering 2,019 nautical miles in 4 hours and 35 minutes.

The flight used less than 1 percent of the aircraft's range, leaving plenty of margin. The aircraft is now at Boeing Field, its home base in Seattle.