US-based Ocean Infinity had been using a deep-sea vessel to survey a vast area of the southern Indian Ocean.
But it found nothing and Malaysia's government says it has no plans to begin any new searches.
The plane disappeared on 8 March 2014 while flying from Kuala Lumpur to Beijing with 239 people on board.
Official search efforts ended last year and there are still fierce debates about what happened to the flight.
Grace Nathan, whose mother was on MH370, said she was opposed to ending the hunt.