The Pentagon is planning to expand the number of daily flights from 61 at present to as many as 90 by 2019, a senior defense official told the Journal.
The move represents the first significant increase in the controversial U.S. drone program since 2011, reflecting the rise in global hotspots.
As well as providing extra surveillance in regions such as Ukraine, Iraq, Syria, the South China Sea and North Africa, the new plan would expand the Pentagon's capacity for lethal drone air strikes.
That program, which has expanded massively under President Barack Obama, is the subject of frequent criticism from observers who say the highly secretive drone raids have killed many innocent civilians.
Nonpartisan groups say U.S. drone strikes have killed at least 3,000 people, the Journal reported.
Under the new plans, the U.S. Air Force, which currently carries out the bulk of drone missions, would get help from the Army, Special Operations Command and government contractors.