NO to the wearing of thermals on board! Please, no. You may not realise it but it can become very warm travelling and flying; often the temperature is raised on overnight flights to encourage sleep.

Better is to wear a scarf/shawl/pashmina. It can be used as a light blanket on the flight, or as a sweat catcher when it is warm , and of course at the destination to keep your neck and chest warm. Pack mittens/gloves and a hat in your carry on, and don't bother changing into thermals at HEL.

I realise that there is a big temperature difference between Darwin and Berlin, but it isn't really that cold in Berlin. Yes, the last few winters were an oddity, and I was caught out a bit, but just wore my winter tights under my jeans and I was ok even at -10.

Last January I was in one location in the first week where it was +38, then I flew the following week (with the same wardrobe in my suitcase) to where it was -30.

The key is layering. My flying outfit is usually t-shirt, cardigan, a-line skirt, tights, ballet flats, and scarf. I pack a few spare t-shirts in my carry on, and can add or remove items as required.

How are you getting from TXL to your destination? The airport bus is a little odd there (and please understand that TXL was to retire long ago so isn't quite as up to date as we'd like) If you haven't already looked at the bus, see here http://www.bvg.de/index.php/en/17131...ssBus+TXL.html

Otherwise, for a taxi trip from TXL to your hotel, thermals really aren't required.

And as to overnight flights: best advise is to adjust your body clock as soon as you board to the time at your final destination. If your trip is short, you don't want to struggle with jet lag for the first several days. This may include taking a nap during your layover, and adjusting when you eat and sleep on the plane to the 'correct' time.

When I fly eastbound North America back to Europe, for instance, I go to sleep immediately, and awake 2 hours before landing, and that minimises the jet lag. Meanwhile most other flyers stay awake, nap before landing, and then struggle for days with the time change. Working out what time works for the final destination is key.