Originally Posted by dgreen12

If you were getting married in April next year, there's zero availability 300 days in advance. At least that's what I saw when I searched SEA-BKK for April 2015.

But if you look at the next two months or so, there's a fair amount of F availability on EK from SEA to BKK.

Takeaway for me is that EK's unlikely to release F seats that early, but if they're not sold they make them available at some point in time.

It's easy enough to play around on the AS website and do some testing.