Doubt it will be earlier, but also it is a bit TBC for then. SEA and IAD ops are both due to restart later in March, but there has been no update on the routes for a while.
I’m booked in to IAD in early April and have already had it gently suggested to me by Flying Club staff that IAD (and SEA) are yet to be confirmed fully.
Unless they confirm anything in the mean time, I expect we will know more by early March at the latest, as that will be the deadline to cancel the first ops.