United Airlines on Tuesday reported a first quarter profit increase that easily beat Wall Street forecasts as it sold more tickets and cut costs, standing by its 2019 profit target even as its Boeing Co 737 MAX jets remain grounded.

Chicago-based United has removed its 14 MAX aircraft, which were suspended worldwide in March following two fatal crashes, from its flying schedule through early July, eating into U.S. airlines' peak summer travel season.

Still, the airline's parent United Continental Holdings Inc reiterated its estimate for adjusted earnings of $10 to $12 per share in 2019, and said its strategy for scheduling more flights out of its hubs was continuing to win customers.