The Parathe Wali Gali is at a distance of 12 km from the Delhi airport, and it would not take more than 30 minutes to cover this distance. The fastest and most convenient way to cover this distance is via hired cabs or taxis from right outside the airport. There are various online cab options available at and around the airport too.
There is, in fact, a direct train from the Indira Gandhi International Airport arriving at the New Delhi Station, which is only a few meters from the Parathe Wali Gali.
The best time to visit Parathe Wali Gali is during autumn, from August to September. Since Delhi experiences extreme temperatures both in summers and winters, it becomes harder to sightsee and try all the delicacies served on street-side stalls, cafes, and restaurants. In fact, the heat of summers is almost unbearable, and the steaminess of parathas does not help.
However, during autumn, the temperature is only mildly cold in the evenings, which makes it perfect to resort to hot parathas served with sweet and spicy chutneys. After some scrumptious dessert, you can also have coffee that adds to the culinary experience in this mild cold. Monsoon in Delhi comes bearing unpredictable and heavy rainfall, which makes it difficult to visit these stalls, as most of them have outside spaces reserved for seating.