I don't know if there's a comprehensive resource, but it's going to be a pretty limited list, so here's a community wiki for it. For inclusion, the hotel must both have their own helipad (flights nearby don't count) and offer regular, bookable helicopter transfer services (unused/emergency-only helipads don't count):
The Peninsula, Hong Kong. If the Rolls ...
Here are some resources for you.
Home Front Command official website
HFC iOS/iPadOS App
HFC Android App
I’m not sure if these apps are available outside the Israel store.
In my opinion the best option is to listen for the siren & follow the instructions.
And a short video with a little bit more information.
Kiwi and Airwander have expertise in multi-stop as does ITA matrix if you know how to use it.
Airtreks can do up to 25 stops.
Indie can do 25 stops as well:
I help build these 2 products over the years to be clear.
Cheers to all.
Kiwi supports upto 8 segments for multi city flight search
AirWander (https://airwander.com) has the option for multi city flight search upto 16 segments,
screenshots for example,
At the moment, flight search engines and maximum number of segments for multi-city search can be summarised as follows:
Expedia : 5
Kayak : 6
Google Flights: 5
ITA Matrix : 6
The other answer is great, but it addresses only the missiles and indirect fire threat to Israel, posed from Lebanon and the Gaza strip, sadly there are other security threats, the "conventional" terrorist attack, which in the last years took the form of stabbings or vehicle attacks.
For these, there is no preliminary warning system, and there is no "...