No pictures of the full outfit because I'm currently in transit, but here's what I decided to travel in (I'm heading to Toronto by way of bus & air.) And I'm not kidding when I say that I picked this outfit primarily for COMFORT reasons:
Nine West faux-wrap scribble print poly blend dress that Angie blogged about a few weeks back
Gray patterned Oroblu stirrup leggings (about the weight of thick tights)
Magenta patent Me Too Legend ballet flats (Utterly comfortable flats that stretch if my feet are swollen, which I'm anticipating on a long-ish flight.)
white NY&Co. blazer, courtesy of Yellowgirl
Black and white patterned Tarnish wool scarf
Mossy green Gallery trench coat
Bronze & green titanium specs
Chunky white watch
Mustard handbag
A black wool beret stuffed into my carry-on just in case I get really chilly
A black unstructured tote bag to carry magazines and an empty water bottle that I'll fill at the airport.

This is without a doubt both the dressiest AND the most comfortable outfit I've ever traveled in. I find this dress very forgiving and comfortable, and less fidgety than a two piece outfit (skirt & knit top) would be. And it's much much more comfortable than pants, which bind at the waist and start to slither down my hips if I'm going between sitting & standing frequently.
The blazer is woven, but it's not stiff and I can roll the sleeves up or down depending on whether I'm chilly. Normally I'd probably have worn a knit boyfriend cardi instead of a blazer, but I didn't want the blazer to get crushed and crumpled in my checked luggage and wanted to wear it with some of the planned outfits I'm bringing. The scarf is long & wide enough that it's actually more of a thin pashmina - it's not too bulky but is also great for adding extra warmth/coverage on an overly air conditioned plane.

Take that, environmental norms! Style and comfort CAN totally go hand in hand, even while traveling.