United reported earnings of $2.12 per share, excluding some items, Bloomberg News said. Continental's earnings were $2.24 a share.
The two airlines merged in October to form United Continental Holdings Inc (UAL), the world's largest airline.
"As we integrate the two networks and create the world's leading airline, we will provide even more value to our customers," Chief Revenue Officer Jim Compton said.
United's revenue jumped 22% to $5.39 billion, slightly below analyst forecasts. Continental's revenue gained 19% to $3.95 billion.