The distance allowing shortening Salah during travel
I own a vineyard that is about 500 kilometers out of the town. Is it permissible for me not to observe Sawm (fasting) during the daytime of Ramadan during my travels
to and from my vineyard, bearing in mind that I have an air-conditioned car, and to make up for the days of Sawm that I missed during the winter?
If the situation is as you mentioned, that there is a far distance between your vineyard and the town, it is permissible for you not to observe Sawm when you are traveling during the daytime of Ramadan and to make up for the days that you missed before the next Ramadan, whether this is done in the winter or another season, because of the generality of the meaning of Allah’s Words (Exalted be He):
...and whoever is ill or on a journey, the same number [of days which one did not observe Saum (fasts) must be made up] from other days. Allâh intends for you ease, and He does not want to make things difficult for you.
(Part No. 10; Page No. 207) May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.