Jason Rabinowitz, an aviation author and researcher, monitored a moody on Flightradar24, a flight-tracking app, and tweeted updates as a Boeing 737 jetliner, Delta Air Lines Flight 431, and Hurricane Irma both got closer to Puerto Rico.
Article source: http://www.huffingtonpost.com/entry/delta-flight-escapes-puerto-rico-before-hurricane-irma_us_59b07c02e4b0dfaafcf53887?section=us_travel