Traveller’s dua (supplication) asking Allah for goodness, ease and safety on their journey, and protection for their homes and loved ones in their absence.
اللهُ أكبَر ، اللهُ أكبَر ، اللهُ أكبَر، سُـبْحانَ الَّذي سَخَّـرَ لَنا هذا وَما كُنّا لَهُ مُقْـرِنين، وَإِنّا إِلى رَبِّنـا لَمُنْقَـلِبون، اللّهُـمَّ إِنّا نَسْـأَلُكَ في سَفَـرِنا هذا البِـرَّ وَالتَّـقْوى، وَمِنَ الْعَمَـلِ ما تَـرْضى، اللّهُـمَّ هَوِّنْ عَلَـينا سَفَرَنا هذا وَاطْوِ عَنّا بُعْـدَه، اللّهُـمَّ أَنْـتَ الصّـاحِبُ في السَّـفَر، وَالْخَلـيفَةُ في الأهـلِ، اللّهُـمَّ إِنّـي أَعـوذُبِكَ مِنْ وَعْـثاءِ السَّـفَر، وَكَآبَةِ الْمَنْـظَر، وَسوءِ الْمُنْـقَلَبِ في المـالِ وَالأَهْـل
Allaahu ‘Akbar, Allaahu ‘Akbar, Allaahu ‘Akbar, Subhaanal-lathee sakhkhara lanaa haatha wa maa kunnaa lahu muqrineen. Wa ‘nnaa ilaa Rabbinaa lamun-qaliboon. Allaahumma innaa nas’aluka fee safarinaa haathal-birra wat-taqwaa, wa minal-‘amali maa tardhaa, Allaahumma hawwin ‘alaynaa safaranaa haatha watwi ‘annaa bu’dahu, Allaahumma Antas-saahibu fis-safari, wal-khaleefatu fil-ahli, Allaahumma innee a’uthu bika min wa’thaa’is-safari, wa kaabatil-mandhari, wa soo’il-munqalabi fil-maali wal-ahli.
“Allah is Greatest. Allah is Greatest. Allah is Greatest. Glory is to Him Who has provided this for us though we could never have had it by our efforts. Surely unto our Lord we are returning. Oh Allah, we ask you on this our journey for goodness and piety, and for works that are pleasing to You. Oh Allah lighten this journey for us and make its distance easy for us. Oh Allah, You are our Companion on the road and the One in Whose care we leave our family. Oh Allah, I seek refuge in you from this journey’s hardships, and from the wicked sights in store and from finding our family and property in misfortune upon returning.”
Upon returning, recite the same dua above adding the following:
آيِبـونَ تائِبـونَ عابِـدونَ لِرَبِّـنا حـامِـدون
Aa’iboona, taa’iboona, ’aabidoona, li-rabbinaa haamidoon.
“We return repentant to our Lord, worshipping our Lord, and praising our Lord.”
Source: Muslim 2/998 | Fortress of the Muslim