Many helicopter companies can provide evacuation by Helicopter for severely injured or ill people. However, someone in Kathmandu must guarantee the payment of the flight before the rescue. Average rescue flight costs about $ 3000.00. If you are trekking with a Kathmandu based trekking agency, send rescue request to them and they will arrange the flight. If you are trekking on you own, send the message to your embassy or consulates. Send your Name, Nationality Passport detail, location and details of the injury of sickness (that is altitude illness, frostbite, heart problem, fracture, dysentery etc.). Message can be passed through the HRA radio system, police radio system, and the National Park radio system or at local airports or army camps. It almost always takes at least twenty-four hours to arrange a rescue, including passing the message.

Now a days, there are many private airlines, which provide helicopter services to evacuate trekkers in an emergency.

If your country has an embassy/consulate in Kathmandu, Register with them before you trek and record the details of rescue process. If your country does not have an embassy or consulate in Kathmandu and you are trekking on your own, you will have trouble getting rescued unless you arrange something in advance. Make sure to check this with your travel insurance scheme; you can now buy helicopter rescue insurance in Kathmandu.