How common are missing flight credits?
 

I have to admit, I don't normally pay attention to what flight credits post and what don't, since I have a lot of activity in my account and I'm lazy. But I just audited through things, and I've noticed that about 1 in every 8 segments of mine fails to post.

This seems like a high percentage of missing flight credits. How does it compare to others?

Mine come up missing quite a bit as well.. When I first started keeping track of my credits I'd check for a while after my flight, every few days, and they'd never come up so I'd fill out the credit requests and they'd post within a week or so finally.

I'd say no more than 2/3 of mine post without intervention.