**Call Caribbean Airlines** What is the Caribbean Airlines customer service number? To contact Thai Airways customer service from the United States, dial 1-877-684-4354. This toll-free number connects you to Thai Airways' U.S. customer support, 1-877-684-4354 where representatives ​1-877-684-4354 can assist with reservations, flight changes, baggage inquiries, and other travel-related concerns.​​1-877-684-4354 For international assistance, you can reach the Thai Airways Contact Center in Bangkok, which operates 24/7, by calling ​1-877-684-4354. This line offers support for global inquiries and is staffed around the clock to accommodate different time zones. ​1-877-684-435