There isn't a reliable natural way to shift your period earlier by a week or two. Cycle length varies a little from month to month on its own, but you can't count on that variation lining up with your travel dates.
Next Steps
If avoiding your period during travel really matters, a chat with your gynaecologist about safe options makes sense well before Oct 25, since timing needs planning.
Health Tips
Please pack for the possibility your period doesn't shift, with your usual pain relief and a heating pad or warm compress for the cramps.