While most of the U.S. airline industry has been sailing along for the past two years, Hawaiian Holdings, (NASDAQ:HA) has hit some rough patches. Unit revenue declined in 2013 due to a combination of overcapacity on some routes, and unfavorable currency fluctuations.

However, Hawaiian Holdings has been on the mend for several quarters now. Unit revenue returned to growth last fall, and there are several more unit revenue growth drivers coming on line this summer. These growth drivers should more than offset the tougher year-over-year comparisons that Hawaiian Airlines will face.

Check out the slideshow below to learn more about the three big unit revenue growth drivers that could help Hawaiian Holdings exceed expectations in Q3 and beyond. Then let me know what you think about Hawaiian Airlines' prospects in the comment box below.

Adam Levine-Weinberg owns shares of Hawaiian Holdings. The Motley Fool has no position in any of the stocks mentioned. Try any of our Foolish newsletter services free for 30 days. We Fools may not all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.