I'd say you're out of luck. If it's a non-flexible ticket it will be difficult to change, esp of you bought online/through an agent. But there are exceptions to almost every rule, so I'd try calling TG and explain the situation.
Are you a TG regular? That would help a little!
H
Thanks H.
I couldn't really call myself a TG regular, but I do have 6 flights with them over the course of 3 weeks (mixture of F and J), so I hope that might give me some change of getting an exception.
I called the number on the TG website (UK), but they said I would have to e-mail the Thailand office to ask about changes, so I have sent over a grovelling e-mail.
Still not too hopeful, but worth a try I guess! If I had been paying attention I would have went for the next fare bucket up as that was only THB200 more each (and allows changes for a THB500 fee), but then again, if I had been paying attention I would have booked the right dates in the first place!