Long distance flights safe at six months?

Sarah

My sister has offered for me to travel to England when I'll be roughly 6 months in July, from Australia. Which means a 10 hour flight and a 14 hour flight.

I'm already anxious at the thought​ of something going wrong.

My 12 week scan so far shows everything is ok (apart from not finding the nasal bone).

Apart from being uncomfortable, what are the risks? From what I've found there's no correlation between flights and miscarriage and shouldn't be linked.

Has anyone known someone to miscarriage at six months?