Jan Koum's Gulfstream G650ER N143 flies Teterboro to Hartford in 23 minutes

Jan Koum's Gulfstream G650ER, tail N143, departed Teterboro Airport at 17:31 UTC on Tuesday, October 27, 2026, and landed at Bradley International Airport in Hartford 23 minutes later at 17:54 UTC. The short hop covered a great-circle distance of 87 nautical miles, or 100 miles, at an average ground speed of 226 knots. The aircraft reached a highest altitude of 9,600 feet and a top ground speed of 392 knots.

The flight used about 1 percent of the aircraft's 7,500-nautical-mile range. Our estimate for this flight: about 180 US gallons of fuel burned and about 1,733 kilograms of CO2 emitted, roughly the same as driving a car 4,290 miles. The Gulfstream G650ER is an ultra-long-range jet with a top speed of Mach 0.925, a ceiling of 51,000 feet, and typically seats 12 passengers, up to 19.

This was the seventh landing at Hartford by one of Jan Koum's Gulfstream G650ERs in the tracked window from August 4 to October 26, 2026. The previous landing at the same airport occurred on October 15, 2026, 12 days before this flight, by N143. Jan Koum's home base is Teterboro Airport in New Jersey, and his most common destinations in the tracked window were Teterboro, Hartford, and San Jose. Before this flight, N143 had flown from Tel Aviv to Teterboro on October 26, a 10-hour-59-minute leg of 4,926 nautical miles.

Jan Koum is the co-founder and former CEO of WhatsApp, a technology investor with a net worth of about $16.9 to 17 billion. He left Facebook and WhatsApp in 2018 over data privacy and monetization disputes. His Newlands VC family office in Dallas manages about $10 billion in assets. Hartford is not a usual destination listed on file, but the aircraft has used Bradley International Airport six times in the tracked window, suggesting a pattern of visits to the region.

The aircraft spent about 14 hours on the ground at Teterboro before this flight, following its return from Tel Aviv. In the 30 days before this flight, Jan Koum's three Gulfstream G650ERs flew 16 flights totaling 57.2 hours in the air, covering about 26,295 nautical miles and using 13 airports in 5 countries. The longest leg in that period was a 5,027-nautical-mile flight from Nuremberg to San Jose on October 3, 2026, flown by N158.

This was a routine short hop between two airports Jan Koum's aircraft uses regularly.

Bradley International Airport's longest runway is 9,510 feet at an elevation of 173 feet. Teterboro's longest runway is 6,997 feet at 9 feet elevation. The distance from Jan Koum's home base at Teterboro to Hartford is 90 nautical miles.

In the tracked window from August 4 to October 26, 2026, all three of Jan Koum's Gulfstream G650ERs flew 37 flights. The most common destinations were Teterboro with 8 landings, Hartford with 6, and San Jose with 3. Before this flight, N143 flew from Hartford to Teterboro on October 18 in 34 minutes over 90 nautical miles.

N143 flew from Savannah to Hartford on October 15, a 1-hour-34-minute leg of 726 nautical miles. On October 18, it flew from New York to Paris in 6 hours over 3,143 nautical miles. The aircraft's estimated fuel burn is 470 US gallons per hour.