"By the way, this plan involves you turning into a bird too, assuming that works on Maiar, which it should as long as you're humanoid at the time. Swifts're faster than bats."
"Okay. So I'll go turn twenty five hundred people into birds and we will talk details on how close you're willing to get to the city."
And Loki rounds up literally everybody and sleepskips them all and turns half of them into birds and puts all the Elves on osanwë-teaching-to-fly duty and all the nonbird Men on bird flinging duty.
"Yes, yes, I know, swifts have a very undignified learning curve. I didn't pick the form for this purpose in particular." As soon as anyone gets the hang of flying she swaps them for another person; hopefully they can do this on rotation and not leave too many behind if they have to flee suddenly.
"You already know how to fly with a different kinda wings, no bet."
"That seems like a personal question and it doesn't sound like you're on personal questions terms with Maitimo to me."
Tedious bird flinging and shapechanging ensue. Thank goodness the usually-wolf werewolves are already out.
Once everybody has finally learned to fly and has picked up their luggage and is an invisible airborne bird - she's been encouraging everyone to be continually packed to go on minutes' notice if that - Okay, let's get out of here.
Double zoom go.
And when they approach the city, Maitimo, there's a price on my head to match your dad's, I brought everybody else in one big batch and got Thuringwethil to play escort Maiar-sensor. She doesn't have to come in but she can help me de-bird people at the gate if that's tolerable.