Eric Lipton for the NYT:
Though that trip has brought new attention to the justice’s penchant for travel, it was in addition to the 258 subsidized trips that he took from 2004 to 2014. Justice Scalia went on at least 23 privately funded trips in 2014 alone to places like Hawaii, Ireland and Switzerland, giving speeches, participating in moot court events or teaching classes. A few weeks before his death, he was in Singapore and Hong Kong….
After Justice Scalia, the second most active traveler on the current court is Justice Stephen G. Breyer, who took 185 privately paid trips from 2004 to 2014, according to a database built by the Center for Responsive Politics, based on individual reports filed by the justices. Chief Justice John G. Roberts Jr., based on a yearly average, had the fewest of these privately funded trips — a total of 48 from 2005 to 2014, the last year for which records are available. Over all, Supreme Court members disclosed 1,009 paid trips between 2004 and 2014.
The destinations often are luxurious, including the Casa de Campo Resort in the Dominican Republic, where Justice Samuel A. Alito Jr. was listed as a speaker for an event last February, or Zurich, where Justice Scalia traveled at least three times on privately funded trips….
The disclosure reports show that the majority of the privately funded trips — by far — are sponsored by universities, both in the United States and around the world.