Ethiopian Airlines became the world's first carrier to resume commercial flights with Boeing Co's grounded 787 Dreamliner passenger jets, a Reuters witness said, as one of the its planes left Addis Ababa for Kenya on Saturday.

The Ethiopian carrier used Boeing's Dreamliner passenger jet for a scheduled flight to Nairobi, which left the capital just before 11 am local time (0800 GMT) and was due to arrive in Kenya about two hours later.

The flight is the first since regulators grounded the worldwide Dreamliner fleet on January 16, after two lithium-ion battery meltdowns that occurred on two jets within two weeks that month.

(Reporting By Aaron Maasho; Writing by Drazen Jorgic)