"Indeed, I am Allāh. There is no deity except Me, so worship Me and establish prayer for My remembrance." – [Surah Taha: 14]
Praying five times a day is a rewarding obligation encouraged upon us as Muslims. It drives us closer to Allah SWT, improves our character, purifies our souls of sins, and inspires us to become better Muslims every day. 
Here are some of the spiritual benefits associated with offering Salah on time:

1- Salah Calms the Soul 
Offering the five daily prayers engages us in a constant state of remembrance of Allah SWT. This spiritual connection relieves our mind and body from the worldly stressors of life.
2- Generates a Feeling of Humility
Similarly, remembrance of Allah gives way to many other positive character traits that are dear to our Lord, including humility, modesty, and piety.
3- Brings Us Closer to the Almighty
Not to mention, Salah gives us the unmeasurable joy of being in Allah's presence and connecting to Him on a spiritual level.
4- Gives Way to Light In Dark Times
Praying five times a day also reminds us that we can always turn to Allah SWT in times of hardship and that He would always listen to our sincere and heartfelt Duas.
5- Helps Us Stay Halal Throughout the Day
Lastly, when we’re constantly connected to Allah throughout the day, it makes it easier on us to be mindful of our acts and lead a Halal life.

Remember – a busy life makes the act of offering Salah harder while prioritizing Salah itself makes a busy life just as easier. May Allah grant us the chance to become faithful worshipers as we pray to Him five times a day. Ameen.