Adjusted EPS for the quarter was 36 cents, topping the 33 cents predicted by Wall Street analysts, Bloomberg noted.
Investors were unimpressed. Shares of Southwest Airlines slipped about 1% in Thursday midday trading.
The airline saw revenue during the second quarter rise 4.7% to $4.62 billion. Analysts had been looking for $4.59 billion. The number of passengers carried remained flat compared to last year, but prices jumped 4.9% on average, which offset a 3.3% rise in fuel expenses.
Company officials said the airline is on track to produce record annual earnings and will not expand its fleet of jets for at least a year.