Thai Airways International reported a first-quarter net profit of THB4.54 billion ($139 million), reversing a loss of THB2.63 billion reported in the year-ago period. Total revenue for the quarter was up 20.3% to THB61.3 billion, of which 79% was attributable to transportation activities (Thai Airways and its low-cost subsidiary Thai Smile). Revenue from transportation activities was up 2.9% to THB48.4 billion year-over-year. Total expenses were up 10.7% to THB59 billion, but actually ...