A marriage proposal can happen anytime, anywhere. When you have decided to pop the question to your partner, you might opt for a grand romantic gesture. There's a certain logic to proposing marriage during a hot air balloon flight. The world is at your feet, you're feeling uplifted (figuratively and literally), and it just seems like such an ideal spot for a grand declaration of love. While balloon flights are certainly a good choice for your proposal, there are a few things you should think about before climbing into the basket with the engagement ring safely tucked away.