Wednesday, Delta (NYSE: DAL) reported that lower fuel prices assisted its June quarter earnings to be better-than-expected as its shares increased 3% in premarket and fuel expenses fell $463 million from the previous year. According to the Wall Street Journal, fuel prices are expected to continue to drop as low as $1.90 a gallon by the end of 2015. Delta also enclosed that its passenger unit revenues fell 4.6%, just exceeding the forecast. For the current quarter, the passenger unit revenue is expected to fall to 6.5% and is forecasting a capacity growth of 3% in the third quarter. The WSJ reports Delta saw $1.48 billion of earnings up from $801 million earlier this year and its revenue rose to $10.71 from $10.62. For more travel and financial new, click here.