Translation of keel in Spanish

At noon we drove back to the tiny airport near the city and a few moments later we were already in the skies. The flight to Saigon, today's name Ho Chi Minh city, lasted more or less one hour.
I understand that you use the article 'die' when talking about a feminine object, das when the subject is neutral, and der when talking about a masculine object. But how can you remember all these?
Although you need at least 2 weeks to visit Peru, it was worth being there for 5 days. It definitely gave us a taste: we will be back for a longer stay.