Can you add travel protection after booking flight?

The short answer is: It’s not too late! You absolutely can buy travel insurance after booking your trip. However, it’s always best to purchase insurance as early in the process as possible.

https://www.allianztravelinsurance.com/travel/planning/buy-travel-insurance-after-booking.htm#:~:text=The%20short%20answer%20is%3A%20It’s,in%20the%20process%20as%20possible.