u/Lowbattcry247

I haven’t bought my ticket yet because I’m sorting stuff out with my partner who has to do things before we book the flights on set date but we plan on going mid June like 15 or 17 but I wanted to see if I could begin the application without the flight ticket because I heard somewhere it’s possible to apply for it with an itinerary? I’m so confused about the whole process and what is needed to be quite frank, I would love any help or tips!