Hi PinkElephant!
First of all congratulations!!!
I did some research into this after Christmas as I had an early mc at Christmas. I could find nothing conclusive about air travel - I'm not even sure what airlines rule for pregnant staff - if there was an issue, i'm sure they would ground airstaff as soon as they got pg.
The only reason I was concerned was that I flew at 5 weeks pg and started miscarrying 4 days later. however, I was also at high altitude in a ski resort, so I wondered if that might have affected it - again there is not conclusive either way.
the only reason I suspected the flying was that a friend of my sister's who was undergoing IVF was advised by her consultant once her embryos had implanted not to fly for the first 12 weeks, as it was not worth the risk.
Having said all that many many women will fly in the first few weeks of pg and have no problems whatsoever. there could have been any number of reasons as to why I mc - it was my 2nd and I didn't fly early in pg with my 1st mc.
Personally, if it was all booked, I would still go - it will be fantastic! I would put your feet up while there though - you'll deserve it!!! And make sure you drink plenty of water on the flight and keep moving - if you can stand it get some of those flight socks as well!!
take care and good luck!
xxx