Question : What day in the next four weeks has the best fares?
Answer : Since low prices are preferred, look at Mar 4th. As of Feb 20th, it's showing the cheapest ticket sales at $425. That is 66% below the average price for this route, so you can spend that extra money on a fun experience in New York.
Question : Are you paying the cheapest or highest price for your ticket to New York?
Answer : Ranging anywhere from $425 to $3,213, prices for MUC to LGA do fluctuate a lot more than the majority of routes from Germany. The further out you book a route, the more likely you are to save.
Question : How long do most people visit New York?
Answer : Of course you're not most people, but if you were, you'd stay roughly five days.
Question : Is price more important than specific travel days for you?
Answer : In March, Sunday is your cheapest day to fly. Having flexibility in your travel plans means you can save more, so be sure to plan ahead when possible.