Southwest Airlines (LUV - Get Report) stock dipped almost 6% Thursday monring after the company reported a 9% decrease in profit as operating expenses weighed on second quarter earnings.

Southwest reported earnings premarket on Thursday of $1.24 per share, beating FactSet analysts' estimate of $1.20 but falling below last year's $1.28 earnings for the second quarter.

Net income dipped to $746 million, down from $820 million during the same time last year. 

Revenue increased 6.7% year-over-year to $5.7 billion, setting a quarterly record. Southwest said revenue growth was due primarily to passenger revenues of $5.2 billion.

The Dallas-based company reported a load factor, or percentage of seats filled, of 85.6%.

Southwest said it expects third quarter operating revenue to possibly be negatively impacted by technology outages and timing of the July Fourth holiday.

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