You might want to start with a travel insurance comparison site such as Squaremouth.com. Because you’re probably on Medicare, you should know that your medical insurance won’t cover costs abroad. And although I would guess that your insurance premium might be $300-$500 or more per person (depending on the policy’s features) a for a three-week trip at your ages, even the most “platinum-clad” policies have limits on how much they’ll pay a foreign hospital for your medical bills. So I highly recommend adding on emergency evacuation insurance, so that you can be airlifted back to a U.S. hospital where your Medicare coverage will apply.
See the full article form Fox News at: http://www.foxnews.com/travel/2013/02/28/should-eldery-travelers-get-extra-travel-insurance/