Really bad experience as trip.com just not able to complete flight changes correctly with the airline I had flights with. My return flight leg from London to New Zealand was changed by the airline however trip.com were just unable to confirm the flight changes with the airline despite me being able to talk to the airline. I spent 2 months of speaking to trip.com to correct the flights but they just would not change them correctly as I got the impression they were just not interested. In the end I had to purchase a new flight myself. I would be cautious of dealing with trip.com