The ASEAN-UN meet on Monday was the last item on the President's schedule on Monday.
Duterte, 72, emerged from one of the bilateral meetings late Monday and told reporters he was "a bit" exhausted from day-long engagements.
"We've explained that the United States is open for trade but we want reciprocal, we want fair trade for the United States", he told reporters in Manila during a summit of Asian leaders, where integrating economies and curbing protectionism has been on the agenda.
American president Donald Trump met with Mr Duterte yesterday, and his office reported they briefly discussed human rights and the Philippines' war on drugs.
However, Trudeau said that during his conversation with Duterte, he "mentioned human rights, rule of law and specifically extra-judicial killings as being an issue that Canada is concerned with". But Trump's rapport with Duterte comes during a time when Duterte is being criticized around the world for approving extrajudicial killings in his war on drugs.
Both leaders have publicly praised the other and appear to have a good relationship, with some Filipinos even calling Duterte the "Filipino Trump".
Some countries in the 10-member Association of Southeast Asian Nations (ASEAN), particularly Muslim-majority Malaysia, have voiced strong concern over the issue recently.