I've only flown with myfirstborn actually and he was older (10 mos his first flight), but my biggest piece of advice is very true for the tiny ones too: Nurse baby on takeoff and landing! With a wee baby like this, you can stick 'em in a sling or carrier or hold them the whole time and it'sjust like getting to sit in your comfy chair all day long. Someone even brings you food! If baby gets fussy, walk the aisles. Need a hand? I have yet to meet a flight attendant who wouldn't hold a baby while you went to the bathroom or got a bag out, etc. The cool thing about a baby this small is thatyou don't have to bring snacks and games for them, just for yourself.
A few things to remember:
--if you have abbay iun a carrier when you go through the metal detector things, they will most likely make you take baby out and show them the carrier as well (especially with a ring sling because of the metal and wrap slings they want you to unwind)
--with children, you can pre-board (board before anyone else) or at least board earlier. I've had good luck doing it either way
--since baby is tiny, you don'thave to buy a seat for them...so you can gate check your carseat and not have to worry about it. A flight attendant will stow it in the airwalk for you and haveit ready for you to pick back up when you get offthe plane. If you plan to rent a car or use a carseat ou there, you can just leave yours at home. If you're really worried, y ou can put it in a bag and put it under the plane with other luggage
--bulkhead seating: ask for it. Most planes have it. It gives you extra leg and body room. If you are on a flight that's not really fully and can get a seat with an empty one next to you, that's extra awesome. Change baby on the food tray or a seat.
I can't think of much else (plus I have a toddler in my ear begging to see trains) Happy Traveling!!
Namaste, Tara (yeah, I know, I"m a Jan mom but I loved your DDC so much I felt like posting *grin*)