Why pray to Jesus and not to the Father? (Catholic perspective) Jesus always refers the Father as to be greater than himself. 

For example:


  You heard me say, 'I am going away and I am coming back to you.' If you loved me, you would be glad that I am going to the Father, for the Father is greater than I.
  John 14:28
  
  Jesus gave them this answer: "Very truly I tell you, the Son can do nothing by himself; he can do only what he sees his Father doing, because whatever the Father does the Son also does.
  John 5:19


And many more. So why don't Christians directly pray to the Father instead of Jesus if he is more superior than him?
Why pray to Jesus and not to the Father? 

According to the Catholic Church there is nothing stopping the faithful from having a devotion to God the Father or simply to the Father. After all the Our Father also known as the Lord's Prayer is prayed at every Catholic Mass and is recited in our rosaries. How many of our prayers within the sacred liturgy are addressed to the Father? 

Is it possible that the Church will institute a Feast in honor of the Father some day? Anything is possible. 

The Church has many devotions and feasts in honor of different aspects of Christ's sacred humanity and the Holy Trinity.


  Devotions to the Holy Trinity
  
  Feast of the Holy Trinity is a devotional day celebrated on the first Sunday after Pentecost and honors the three Persons of God: the Father, the Son, and the Holy Spirit.[16] The Novena to the Holy Trinity may include the Glory Be prayer, as well as other prayers, although the other prayers may vary.
  
  Devotions to Jesus
  
  Several widespread devotions in the Catholic tradition relate directly to Jesus Christ. Official Catholic teachings consider Eucharistic adoration an important practice which "stimulates the faithful to an awareness of the marvelous presence of Christ and is an invitation to spiritual communion with Him." In many cases Eucharistic adoration is performed by each person for an uninterrupted hour known as the Holy Hour.The inspiration for the Holy Hour is Matthew 26:40 when in the Garden of Gethsemane the night before his crucifixion, Jesus asks Peter: "So, could you men not keep watch with me for one hour?".
  
  Some devotions have the form of Acts of Reparation to Jesus Christ for the sufferings and insults that Jesus endured during His Passion or for the sin of blasphemy, e.g. the Golden Arrow Prayer. Devotions involving the Sacred Heart of Jesus first appeared in the eleventh and twelfth centuries, but most current devotions are attributed to Saint Margaret Mary Alacoque (1647–1690).
  
  In the Roman Catholic tradition, the Sacred Heart has been closely associated with Acts of Reparation to Jesus Christ.
  
  The devotion to the Holy Face of Jesus dates back to Sister Marie of St. Peter in 1843 who reported visions of Jesus and Mary in which she was urged to spread the devotion to the Holy Face of Jesus, in reparation for the many insults Jesus suffered in His Passion. This resulted in The Golden Arrow Holy Face Devotion (Prayer). The Devotion to the Holy Face of Jesus was first approved by Pope Leo XIII in 1885.Sister Maria Pierina de Micheli further promoted the devotion based on the image from Secondo Pia's photograph of the Shroud of Turin.In 1958, Pope Pius XII approved of the devotion and the Holy Face medal and confirmed the Feast of the Holy Face of Jesus as Shrove Tuesday (the Tuesday before Ash Wednesday) for all Roman Catholics.
  
  Other devotions include the Divine Mercy based on the visions of Saint Faustina Kowalska, known as the "Apostle of Mercy", and First Friday devotions which are related to devotion to the Sacred Heart of Jesus and the Chaplet of the Five Wounds. - Catholic devotions


One of the main reasons why the Church does not have a stronger devotion and prayer to the Father is that a Feast has not yet been instituted in honor of the Father for one reason or another.


  The absence of a feast dedicated to the Father in the liturgical calendar bears witness to the fact that the worship of the Father still hasn’t reached its full development. During the year there are feasts dedicated to Christ in memory of numerous events of the work of salvation, the feast of the Holy Spirit at Pentecost, the feast of the Holy Trinity, the feasts dedicated to Our Lady and those dedicated to numerous saints. However, there is no particular feast dedicated to the Father.
  
  In the past there were attempts to introduce a feast of the Father. In the XVII century, for example, in 1684 the king of Spain Charles II started a petition in Rome in order to obtain, at least for Spain or for the whole Church, the institution of a special feast dedicated to the Father. - The new worship of the Father by by P. Jean Galot SJ  


It is interesting to note what Fr. Raniero CANTALAMESSA OFM,Cap has to say about the possibility of this devotion considering is the Papal Preacher for the Apostolic Household at the Vatican.


  It’s sad that in the whole liturgical year there isn’t a feast dedicated to the Father, that in the whole Missal there isn’t even a votive Mass in His honour. Come to think of it, it’s very strange; there are many feasts dedicated to Jesus the Son; there is a feast of the Holy Spirit; there are many feasts dedicated to Mary… There isn’t a single feast dedicated to the Father, “source and origin of all divinity”. We could almost say that the Father, and no longer the Holy Spirit, is “the unknown divinity”.
  
  It’s true, there is the feast of the Holy Trinity, which, however, is the feast of a mystery, or a dogma and not of a person and, nevertheless, not of a single divine person. Besides, the fact that there is a feast of the Holy Family doesn’t mean the Church may not feel the need to celebrate,
  even individually, the three persons of the Holy Family. There are even two feasts dedicated to Jesus’ putative father, but there isn’t a single feast dedicated to His real Father. Couldn’t this be the moment to fill this gap?
  
  Many feasts originated in order to answer the particular needs of an era: the feast of Corpus Domini, for example, was born as a response of faith to the denial of the real presence, made by Berengario of Tours; to the threat of Jansenism, the Church responded with the feast and devotion to the Sacred Heart and no one will ever know how many spiritual graces this devotion produced. Today, the threat strikes the very heart of the Christian faith which is the revelation of God as Father – the “Father of our Lord Jesus Christ”, as St. Paul calls Him – and, therefore, the Trinity itself. It’s not a coincidence that Providence is bringing back to mind, in our days, the mystery of God’s suffering, but because the Holy Spirit knows that this is the remedy needed to
  heal the contaminated mind of modern man, who has found, in suffering, the stumbling stone which leads him far away from God.
  
  While we look forward to this day, we can already celebrate the feast of the Father “in spirit and in truth”, in the intimacy of our hearts, by perhaps promoting little spiritual initiatives whose purpose is to make the Father known more, to honour Him and express all our filial love for
  Him, in union with Jesus, who always celebrates His Father… In fact, this is already taking place and many people are experiencing the new and extraordinary fervour it gives to faith and to our whole spiritual life. - A Feast for the Father  


Praying to the Father has always been permitted within the Catholic Church, although the devotion to the Father is not yet at an official liturgical celebration. A Liturgical feast in honor of God the Father is a possibility in the future as is seen here.