They say that the US passport is one of the most valuable in the world, and the fact that you can fly to 87 countries directly from a US airport supports that!
As of June 12, 2019, can you name all of the cities with direct nonstop flight access from a US airport?
Source: author's own research using https://www.flightconnections.com/ and https://en.m.wikipedia.org/wiki/List_of_international_airports_by_country
My data set has countries for each city - my instinct is that adding countries to each line as a hint makes it much easier....but if people think it's better I'm open to the idea!