I think travel during first trimester just a little tough becuase you have to deal with morning sickness, but i don't think any problem if you travel. They only suggest don't travel during your last trimester.
Enjoy the trip
Take care
i am almost positive that flying in your first trimester isnt an issue...have fun!
Are you worried about flying? If so, my doctor said it's not an issue. He said flight attendants get pregnant all the time...so one trip should not be a problem. Have fun!