Wind and other weather conditions affect flight time greatly but most of our drones can fly between 25-45 minutes before a battery swap is required. A couple can even fly for 90-110 minutes.
For applications requiring longer flight times, we can quickly swap out the rechargeable battery packs and get our drones back in the air extremely quickl or use our home built wings which can fly in excess of several hours. A few of our drones can even fly continuously for many hours with a tether/power cable.
We also have enough battery packs to keep all of our drones up in the air virtually continuously (while depleted batteries recharge in our vehicles, from solar batteries, or gas generators.)