"This was a tremendously powerful storm", said Trump.
Mr Trump also met with National Guard personnel in Louisiana helping with relief efforts and later flew to Orange, Texas, to meet with officials.
Trump then toured a neighbourhood with Gov. John Bel Edwards and acting Homeland Security Secretary Chad Wolf, making his way down a street blocked by felled trees and where houses were battered by the storm, one with its entire roof torn off.
"It's a tremendous number", the president said, referring to those lost, "but you were thinking it could be, could have been, a lot worse".
While Trump did note that storms are more frequent and stronger than those decades ago, he did not directly connect that to climate change when asked, saying this area has always been prone to storms.
Hurricane Katrina, which hit Louisiana in August 2005, caused the widespread failure of the levee system protecting low-lying New Orleans.
Trump said Saturday in Texas that FEMA would deliver 400,000 liters of water and 200,000 meals to the affected.
Louisiana lawmakers accompanying Trump included Senator John Kennedy and Representatives Clay Higgins, Steve Scalise and Garret Graves, all Republicans.
At a briefing, Texas Governor Greg Abbott said he believed the state got through Laura without spreading COVID-19. Ted Cruz, R-Texas, and other local officials to discuss the emergency response and how the federal government can help with power and water restoration.
Hurricane Laura struck the coast of Louisiana early Thursday as a Category 4 storm, packing winds of 150 miles (240 kilometres) an hour.
The storm's track shifted east at the last moment to strike the region visited by Mr Trump, along the border between the two states, while sparing nearby oil refineries. He's criticized his opponent Joe Biden, the Democratic presidential nominee, for not appearing more frequently in public.
During a trip to the Carolinas in 2018, Trump marveled at a yacht that had been washed away by flood waters onto a family's property and told them, "At least you got a good boat".