Is the flight number box coded for just numbers only? I'm not a frequent flier(yet, but work may be changing that), so don't know if flight numbers ever have letters in them!

If it's not, and flight numbers are just numbers, I would suggest ensuring that the hardware keyboard inputs numbers when in that field and using it, without having to press the lovely little blue arrow every single first.

When you say "numeric pad popup" is it just going to be an in-line keypad or the full virtual keyboard? Just a small keypad would be so much nicer, if possible. But also goes back to my first question about flight number characters...