You’ll be fine. I just flew at 35 weeks on a 2 hour flight. Bring compression socks, a pillow for your back, snacks, and a waterbottle
Many airlines don’t want you to fly after 36 wks so you may need a doctors note.
I sure did and I might do again with this pregnancy
I would check with the airline you will be traveling on. Some require a doctors note stating you're okay to fly (don't need one for Delta)