Suggestion

def origin_destination_info(trips)
  origin_code = []
  destination_code = []
  departure_date = []
  arrival_date = []
  [trips].flatten.each do |this|
    origin_code << this[:departure_airport][:@location_code]
    destination_code << this[:arrival_airport][:@location_code]
    departure_date << this[:@departure_date_time]
    arrival_date << this[:@arrival_date_time]
  end

  [origin_code.first, destination_code.first, departure_date.first, arrival_date.first]
end







###########call this function like this
origin_code, destination_code, departure_date, arrival_date = origin_destination_info(trips)