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  • Thanks for adding hpn to my Obscure Airport Codes list berlinslum!

    December 25, 2010

  • HPN is the airport code for Westchester County Airport located in Harrison, Rye, and North Castle (which includes Armonk), New York. 900,000+ passengers boarded in 2008. I thought the code referred to the explorer Father Louis Hennepin; Wikipedia suggests it comes from the initial letters of the adjacent towns of Harrison, Purchase and North Castle.

    December 25, 2010