thanks. Also forgot to note size difference between those airports.. DEN is #4 in the US with 38M passenger boardings/year, PDX #33 with 8M. So maybe 4x large

thanks. Also forgot to note size difference between those airports.. DEN is #4 in the US with 38M passenger boardings/year, PDX #33 with 8M. So maybe 4x larger https://en.wikipedia.org/wiki/List_of_the_busiest_airports_in_the_United_States https://en.wikipedia.org/wiki/List_of_the_busiest_airports_i...