Staff Sgt. Michael Swinton, a husband, father, and soldier, was remembered for his service to his country and devotion to his family.
The two leaders will also attend Sen. Lindsey Graham's funeral service.
Neither the U.S. nor Iran reported carrying out any attacks for three straight days - a respite after weeks of bombardments that led to fears of a return to all-out war.
The four American troops killed during renewed fighting between the U.S. and Iran in recent weeks are no longer listed as part of the Iran war death toll in the Pentagon's official casualty count.
Following the collapse of the U.S.-Iran ceasefire deal, scores of American troops have been injured and at least four service members have been killed.
Sgt. Michael Emmanuel Swinton was killed in action during the disposal of a downed Iranian one-way attack drone in Iraq.