Hasan says that permission has been given to not fast during travel.

Hazrat Ibn Abbas (may Allah be pleased with both of them) says that not fasting during travel is an act of resolve.

Hazrat Ibn Umar (may Allah be pleased with them) narrates that not fasting during travel is a charity which Allah Almighty has bestowed upon His servants.

Hazrat Ibn Abbas (may Allah be pleased with both of them) narrates that the Noble Prophet (peace and blessings be upon him) fasted in the year of the conquest of Makkah, and when he reached the place of Kadid, he broke his fast. The rule is that the last action of the Noble Prophet (peace and blessings be upon him) will be taken (as precedent).

Hazrat Abu Umais says that I asked Abu Ja'd about fasting during travel, so he said, "Do not fast at all."

Hazrat Abdullah bin Zakwān narrates that Hazrat Ibn Umar (may Allah be pleased with them) spent two Ramadans in Shaam performing Qiyam (night prayers), but did not fast.

Hazrat Saeed bin Jubair says that whoever travels with me should by no means fast.

Hazrat Mudarris bin Abdullah narrates that I said to Hazrat Sha’bi,“I live in Rayy.”He replied,“Pray two rak’ahs.”I asked,“What do you say about fasting?”He replied,“Do not fast either, even if you stay there for ten years.”

Hazrat Abu Huraira narrates that the Holy Prophet (peace and blessings be upon him) was on a journey, and Hazrat Abu Bakr and Hazrat Umar were also with him. Food was brought to the Prophet, so he said to both of them, "Come and eat." Both of them said, "We are fasting." The Holy Prophet (peace and blessings be upon him) said, "Prepare the saddle for your two companions, do work for your two companions, come close and eat food."

Hazrat Anas was asked about fasting during travel, so he said that there is a concession for the one who does not fast, and if someone fasts, then it is better.