You can find the "complete series" sets on major retail marketplaces. These are often listed as containing all 5 seasons with "Español Latino" audio:
: The series famously ends with Arnold finding his father's journal, a cliffhanger finally resolved years later in Hey Arnold!: The Jungle Movie (2017). Where to Watch the Complete Series Hey Arnold Serie completa espanol latino
If you prefer to watch the series digitally, it is available on the following platforms (regional availability may apply): You can find the "complete series" sets on