30weeks and traveling

1) i don't have a doc back home i had my whole pregnancy in a different country(pakistan im from america)...

The doc i use to have closed her clinic.... i mentioned this because i know u guys will say ask ur doc. How can i when i dont have one...

I was suppose to go back in June ....but my husbands sister changed her wedding date so i can attend its late August... so by the time i go back ill be 30weeks beginning of September. Im due November

My question is when is it safe to travel i dont want to deliver in Pakistan... i want to deliver back home.. its a long flight

Has anyone traveled late in there pregnancy? Any tips to be prepared during traveling

1st baby came 2 days before due date

2nd baby came 1.5 weeks late