You know, the all-nighter, in one seat for at least eight hours, ten to eleven on the way back, scrunched up and drooled on... Is it comfortable? Doesn't wrinkle? Dressy, casual, black? I need some tips here. My jeans and cotton short sleeve shirt will not work here...

Black pants with a little bit of stretch to them, white t-shirt with a white no wrinkle cotton shirt over that, topped by a black knit jacket. Nothing that would wrinkle or bind. Shoes? Flats that I could easily slip off.

Think about what you would wear on a long car trip.

Very, very comfortable clothes! I read all the old threads before our trip. Lots of people recommended sweats. I'm so glad I didn't wear them. I would've been miserable as I was overly warm for so much of the trip. Of course, being a menopausal woman has much to do with that! But, seriously, I'd be tempted to wear shorts next time! If you get cold you can always throw on your coat or use the blanket. But when you're dressed too warmly, you're stuck!

Wear a loose pink jogging suit and try a mud mask or two so your cheeks will glow upon arrival.

edhodge offered some great advice and the outfit sounds like you will be comfortable and look nice. Last time we flew JFK/LHR a few people got on the plane in their pajamas and honestly they looked ridiculous, and really – how long were flying? 6-7 hours? Also, there are so many nice fabrics now that getting on in sweats really isn’t necessary (and as Caph said you can get too warm), you can still be really comfortable without looking like you are about to lead the in-flight pilates class!

I like to wear a mid-length comfortable, loose fitting skirt and top with easy to slip off shoes because I always have a long layover in the heat of St. Maarten before my journey even begins. If it's winter time I just pop into the ladies room at my first arrival in Europe and change into something more climate appropriate.

Comfort is definitely key and I suppose it depends on what is comfortable to you personally.

I really prefer not to wear things that look like sweats or pajamas when I'm traveling so I slip a pair of comfy leggings and a thick pair of socks into my carry on. When it's time to sleep, I try to discreetly slip off my pants or skirt under my blanket and put my leggings on. It helps if I'm in the window seat and my boyfriend sits in the aisle. (I don't change in the tiny coach bathrooms for fear of rubbing against some contaminated surface...) I roll my nice pants or skirt and tuck it away -- generally doesn't wrinkle at all and I get re-dressed on the descent. I sleep great this way...

degas, you forgot the flip-flops!

I'm the opposite. I'm always cold on a plane so I usually wear navy or black cotton pants with a little stretch to them, flat shoes & a white top with a cashmere sweater (not bulky but just enough warmth.)
I never wear jeans on a plane as I think that's about the most uncomfortable thing to wear for me IMO.

I wear some kind of good looking 3 piece knit outfit (look at Travel Smith online catelog for ideas) or equivalent. Color coordinated and in layers, for if you are too hot or too cold on the plane.

I usually wear loose fitting khakis that don't wrinkle too much, a comfortable shirt and a pair of shoes I can slip off easily.

I'm always amazed at some of the people who get on the plane in tight jeans, very high heels, short skirts, etc. Sure, I like to be stylish as well, but comfort is definitely the key on longer flights.

Tracy

Whatever shoes I'm bringing, the bigger ones get worn on the place. The smaller ones take up less room in the suitcase.

Other than that, dress for comfort.

I have one outfit that I save just for plane travel. I think it's great. It's made of that nylon they call parachute fabric -- very light weight and you couldn't wrinkle it if you wanted to. The set consist of black pants, black jacket with tiny white poka dots down the front with a white blouse and black poka dots. I can take the jacket off if I get too hot, and the pants have elastic in the waist so they are very comfortable. The pants are not gathered at the bottom -- it's not made at all like sweats. Of course, I'm an older woman -- I don't think the younger generation would think it fashionable enough. However, I did get bumped up to 1st class once, because the lady said I was dressed so nicely. She was an older woman too -- so that might not count.

Cotton knit pull-on pants (I have three pairs now--black, charcoal and heather grey), short sleeve coordinating t-shirt and a cotton/silk cardigan sweater. All are lightweight and about as close to pajamas as you can get without looking like them. Most of my shoes are backless, so easy to slip off and on. I take one of my pashminas with me in case I get cold (though I rarely do), as I wouldn't use an airline blanket (probably not laundered for months, if ever) if I was freezing to death.

Stretchy pants, loose top and usually a down vest. I find planes chilly. If the plane is warm, I take off the vest and roll it up for a pillow. I also often have a fleece scarf to wrap around my neck if I'm not wearing a turtleneck. Being warmer helps me sleep.

I also wear the bulkiest shoes I'm taking with me, although I've recently tried to keep them from being lace-ups since I'm made to take them off in security lines. My husband has learned to slip his belt and other metal accessories into a plastic bag that he puts inside his carry on just for the trip to the airport, and he pulls them out while he is waiting at the gate.

I've noticed women get onto overnight planes wearing what are obviously freshly bought new travel clothes, with matching accessories and a salon-created hairdo. They look like hell at the end of the trip, just like the rest of us.

Long black knit skirt, tee or turtle, and sweater: wool in winter, cotton or blend in warmer weather.

Slippers. They take up little room, are light, and make a big difference on how my feet feel on arrival.

A lightweight shirt and dressy Haggars seem to hold up well for me.

I dress very casual. Dress for comfort. For me it is jeans and a t-shirt and gym shoes. Nothing too tight.

Jeans and a long sleeve shirt. All natural fibers with good body coverage so if the plane bursts into flames the clothes dont melt to my body and I have only a small amount of skin exposed.

Jeans and T for me also. and a pashima shawl for cover if chilly.