Singapore Airlines (SIA) primarily serves Dallas through Dallas/Fort Worth International Airport (DFW), offering flights and codeshares, but they don't list a traditional public-facing Dallas city office for bookings instead, you'll find their Cargo operations at 1640 W 23rd St, Dallas, TX 75261, with general passenger support handled by their central US customer service at numbers like +1-866-829-1086, or through their website for bookings and changes. Jauntlet.comhttps://jauntlet.com/