Jaunts across the pond just got a little greener.

A Virgin Atlantic passenger plane today flew from London to New York using 100 percent sustainable aviation fuel (SAF), marking a significant step toward the decarbonization of long-haul flights.

Powered by Rolls-Royce Trent 1000 engines, the Virgin Boeing 787 took off from London's Heathrow Airport just before 7 a.m. EST on Tuesday and arrived at New York's John F. Kennedy International Airport around 3 p.m. EST. Flight100, as Virgin is calling it, marks the first time a commercial airliner has flown long haul on 100 percent SAF.