For those looking to find strong Transportation stocks, it is prudent to search for companies in the group that are outperforming their peers. Delta Air Lines (DAL) is a stock that can certainly grab the attention of many investors, but do its recent returns compare favorably to the sector as a whole? A quick glance at the company's year-to-date performance in comparison to the rest of the Transportation sector should help us answer this question.Delta Air Lines is one of 122 individual stocks in the Transp ...