Swiss flight SWR9G departs Chicago O'Hare eastbound, reaches 39,017 ft over Atlantic
ADS-B ground track over the map.
Swiss International Air Lines flight SWR9G, a Boeing 777-300ER registered HB-JNF, departed Chicago O'Hare International Airport (KORD) at 7:33 p.m. local time (00:33 UTC) on August 25, 2026, bound for Zurich. The aircraft lifted off heading east at roughly 87 degrees, passing near Gary Chicago International Airport in the initial climb.
ADS-B data reviewed by SkyMeter shows the aircraft climbed steadily through the departure, reaching a peak climb rate of about 3,780 feet per minute in the lower altitudes. The flight leveled near 36,500 feet roughly 20 minutes after departure, then spent an extended period in a gradual step-climb, slowly working upward over the following two hours. By about 10:29 p.m. local time the aircraft was climbing through 39,000 feet on a heading of approximately 75 to 77 degrees, eventually reaching a recorded maximum of 39,017 feet. At the point the ADS-B recording ends, at 10:42 p.m. local time, HB-JNF was cruising at 39,016 feet at 528 knots on a heading of 78 degrees, still well over the Atlantic. According to airlive.net, the flight declared an emergency over the Atlantic and diverted to an airbase in the Azores.
The full recorded portion of this flight, covering about three hours and nine minutes of the departure and oceanic climb, can be replayed on SkyMeter.