Thai Airways is waiving change fees for tickets issued on or before 26 September 2026 for travel between 26 September and 11 October 2026 to or from Suvarnabhumi, domestic and international. Passengers can change the travel date once, on the same route and fare class, subject to seats, but must fly by 11 October. Flights cancelled due to the flooding get a full refund. If your staff or clients fly THAI for business, check booking dates now and allow extra travel time because traffic in some areas may still be affected.