Traveling after C-section?

I know that it depends on the pregnancy, person and doctor obviously.  But how long after a c-section is it okay to travel.  I am not <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">eve</a> pregnant yet but am thinking in advance.  My niece graduates next summer and I was hoping to be on maternity leave when this happens so I can go.  But, things didn't work as planned.  If I get pregnant this cycle, it would still work but I would only be 2 weeks post-op.  I just really don't want to put off getting pregnant but I also don't want to miss her graduation.  And if I put it off, it will have to be for several months since given my history, my doc probably won't let me travel too late in my pregnancy.