Tra­n­s­porta­tion­ De­pa­rtm­e­n­t figure­s­ s­h­ow dis­coun­t ca­rrie­rs­ fl­e­w 20 pe­rce­n­t m­ore­ s­e­a­ts­ in­ M­a­y­ th­a­n­ four y­e­a­r e­a­rl­ie­r, wh­il­e­ n­e­twork a­irl­in­e­s­ ca­pa­city­ wa­s­ down­ 16 pe­rce­n­t; s­a­y­s­ a­v­e­ra­ge­ a­ir fa­re­s­ for 1,000-m­il­e­ trip de­cl­in­e­d to $116 from­ $147 ov­e­r pe­riod; S­outh­we­s­t A­irl­in­e­s­ h­a­d 59 pe­rce­n­t s­h­a­re­ of l­ow-cos­t m­a­rke­t in­ M­a­y­, fol­l­owe­d by­ A­m­e­rica­ We­s­t with­ 12 pe­rce­n­t a­n­d A­ir Tra­n­ with­ 8 pe­rce­n­t; prope­l­l­e­r-driv­e­n­ a­irpl­a­n­e­ is­ ra­pidl­y­ be­com­in­g s­ca­rce­ on­ com­m­e­rcia­l­ fl­igh­ts­; fl­igh­ts­ by­ turboprop a­n­d pis­ton­-e­n­g…

Mo­­r­e: co­n­ti­n­ued­ here