Exxon Mobil's Gulfstream G650ER N100A returns to Houston from Madrid after 9-hour flight

Exxon Mobil's Gulfstream G650ER, registered as N100A, landed at George Bush Intercontinental Airport in Houston on Sunday, October 25, 2026, at 01:37 UTC. The aircraft departed Adolfo Suárez Madrid–Barajas Airport in Spain at 15:47 UTC the same day. The flight took 9 hours and 49 minutes.

The aircraft used 58 percent of its range on this leg. Its top ground speed reached 513 knots. The departure runway at Adolfo Suárez Madrid–Barajas Airport is 14,271 feet long at an elevation of 1,998 feet. The arrival runway at George Bush Intercontinental Airport is 12,001 feet long at 97 feet elevation.

The great-circle distance between the two airports is 4,341 nautical miles, or 4,996 miles. The aircraft averaged a ground speed of 442 knots and reached a highest altitude of 47,025 feet. Based on our estimates, the flight burned about 4,617 US gallons of fuel and produced about 44,351 kilograms of CO2, or 44.4 metric tons. The Gulfstream G650ER is an ultra-long-range jet with a range of 7,500 nautical miles, a top speed of Mach 0.925, and a ceiling of 51,000 feet. It typically seats 12 passengers and can seat up to 19.

This was the 16th landing at Houston tracked by celebplanes in the 38-flight window from July 11 to October 25, 2026. The previous landing at Houston was on October 9, 16 days before this flight. Houston is the home base for Exxon Mobil's sole corporate jet. The aircraft's usual destinations include London Heathrow, King Abdulaziz Air Base in Dhahran, King Khalid International Airport in Riyadh, Washington Dulles, Chicago O'Hare, and San Francisco International. In the 30 days before this flight, the aircraft visited six airports in two countries and flew about 8,498 nautical miles. Another tracked aircraft, a ConocoPhillips Embraer ERJ-145XR, landed at Houston about two hours earlier.

In the 30 days before this flight, the jet made seven flights totaling 18.4 hours in the air. Those flights produced an estimated 83,168 kilograms of CO2. The most common destination in that window was Houston with 15 landings, followed by Stonewall with two and London with two. The longest leg in that period was Houston to Madrid on October 23, covering 4,342 nautical miles.

Exxon Mobil Corporation is the largest publicly traded oil and gas company, led by CEO Darren Woods and headquartered in Spring, Texas. The company operates an unusually small flight department for its scale, with N100A as its only corporate jet. Houston is the home of Exxon Mobil's corporate headquarters and a hub for its global energy operations. No news reports were found tying Exxon Mobil to a specific event in Houston on the date of this landing.

Before this flight, the aircraft had been on the ground for about two hours after its previous tracked landing at Madrid. That earlier leg on October 23 from Houston to Madrid took 8 hours and 22 minutes. The jet then made short hops within Spain, including Madrid to Valdepeñas on October 23 and Palma del Rio to Madrid on October 25.

This flight ended a trip that began with a Houston-to-Madrid leg on October 23, followed by short hops within Spain. The aircraft's movements show a return to its home base after a series of flights in Europe.