To change your Thai Airways flight, follow these steps. Firstly, visit the official Thai Airways website and log in to your account. Navigate to the "Manage Booking" section, where you'll find options to modify your reservation. Enter your booking reference or e-ticket number to access your itinerary. Once inside, look for the " Thai Airways Change Flight" or "Modify Booking" option. Follow the prompts to select a new date, time, or destination for your flight. Be aware that changes may be subject to availability and fare conditions. Additionally, there might be change fees or fare differences, depending on the fare rules of your original booking. Review and confirm the changes before completing the process. If you encounter any difficulties or have specific queries, reach out to Thai Airways customer support for assistance. Keep in mind that policies and procedures may vary, so always check the airline's terms and conditions.
https://www.travomojo.com/flight-change-policy/thai-airways-flight-change-policy/