I need to travel from BWI to New York . I am preferably looking for Bus as it is cheaper. Can anybody suggest me, how can I plan my trip.

I would take the train for a safe peaceful ride or you could take Megabus it's cheap and you get what you pay for

Have you ever thought of train much better ride

There are charter buses that leave DC area to New York every 4 hours. it is approximately a 4 hour trip and they run around $40 round trip. Google Charter buses to New York from DC it should pull up a list of them in area

Amtrak station at BWI....great way to get to New York.