Holiday if pregnant??

So hubby & I are wanting to book a holiday for next year. Only Spain or somewhere, but will involve flying. We are TTC, and even if I were to have fallen pregnant this cycle (still in my TWW), I would be a maximum of 7 months pregnant when we go. My question is, is it safe to fly/ go on holiday when you’re that pregnant? I literally have no clue! TIA & lots of baby dust x