Fasting by a Traveler
1723. A traveler for whom it is obligatory to shorten a four Rak’at prayer to two Rak’ats, should not fast. However, a traveler who offers full prayers, like, a person who is a traveler by profession or whose purpose of the journey is Haraam, should fast while travelling.
1724. There is no harm in travelling during the month of Ramadhan, but travelling to evade fasting is Makrooh.