If you're catching a long-haul flight this week, get ready for some serious speed

Nicolas Economou/NurPhoto via Getty Images A United Airlines flight went over 760 mph as it crossed the Pacific on Monday.

Some international airline passengers are in luck this week as a supercharged jet stream helps flights land over an hour ahead of schedule.

Numerous transpacific flights from Asia to the US clocked ground speeds around 750 miles per hour on Monday, according to data from Flightradar24.

For example, United Airlines Flight 2, from Singapore to San Francisco, reached a ground speed of 767 miles per hour. That's 200mph faster than the Boeing 787's normal cruising speed, and equivalent to the speed of sound at sea level.

Flight 2 touched down in California at 7:50 a.m. — 1 hour and 25 minutes before its scheduled arrival time.

While airlines build padding into their timetables to absorb delays, there's still a sizable boost.…