Read the green spiral bound trip information book you received (or will receive shortly). Generally, where there is a tight restriction, you will received a duffle bag on tour to pack a subset of your clothing until your main luggage catches up with you.
If you have more questions, please repost in the India forum under the appropriate trip.
First, Ken is correct...you are asking this on the incorrect forum. There is a lot about in- country flights on both the “Spotlight” and “ Portrait” forums. You will find a lot of important info by going through the various threads on each forum. When we took the “ Portrait of India” tour in January 2016, the luggage restriction was one bag at 44 pounds. You might be allowed more on the international flights, but the intra- country flights allow less weight. Flying in India is interesting as they take their security precautions/ restrictions seriously.
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If you have more questions, please repost in the India forum under the appropriate trip.