When doing your Chardham Heli Yatra in 2025, timing matters a lot. The temples open only in certain months and the skies must be clear for helicopter travel.
✦ Ideal months
The most recommended months are late April/May through June. The weather is nice, skies are clear, and helicopter flights are reliable.
Another good window is September to early October (after the monsoo... http://www.lih.travel/chardham-yatra-by-helicopter/