Scroll through the results for cheap flights to Nogales in the USA. To get the best deal, we'd advise booking in advance, particularly if you want to fly with a specific airline. Check your dates and see.
If these flights are too expensive, try searching for a different time of year. It's likely that prices for both flights and accommodation So if your dates are flexible, consider looking at different times of year.
Or broaden your search by looking at other airports in the USA.
For even more options, check what other airports you could fly to Nogales from. You might be able to make a saving by going from a different airport or city.