Silver - can't book F-Award
 

I'm (still) Silver, at least until my status expires on March 31st. I should, however, still be able to book a 1st class award as long as I'm Silver, right? Or does that right expire at the end of a calendar year? I'd like to burn my miles, so I thought, the best way for this is a 1st class return to LAX…

Correct - as you are currently a Flying Blue Elite member, you should still be able to book Flex Awards. First Class is only available to book as a Flex Award.

Addition: First awards are only available to Elite+ (Gold an Platinum).

Nope, also for Silver Elites:

First is not Flex ;)

Maybe a glitch since the new FB website. It's very weird anyway.

But as pointed out by irishguy28, First awards are only available as flex awards.

not worth the miles. Book some C awards instead.

Makes no sense to book F award. And do you have enough miles (e.g. 400K for Asia)?

I have roughly 250k miles which is a round-trip F-award to the US (LAX is the best value). I don't know if I'll fly AF/KL or ST this year, so my status will be gone by end of March, and if I don't fly, my miles will expire one year after. I don't have enough vacation to spend all the miles for promo-awards :(, so a single F-award would be the best option for me…

It was a glitch…
 

It is working now, but only for the summer schedule. Bookings for the next winter are still not (yet) possible (in F). But it doesn't matter, as these awards are flexible.

Just to clarify - miles expire 20 months after the last mileage-earning activity.

So while it might be convenient to burn them all in one extravagant F redemption, one Skyteam flight every 18-20 months is all that's really required to keep your miles alive. (And they may come in convenient to you a few years down the road).

you don't need status to book C-awards and keeping the miles alive is not that difficult. F on AF is WAYYY overrated and too expensive, almost twice the cost of *A.