New York, New York! The cheapest price I've ever seen to the Big Apple!
Can't hot link to it, but I tried Mar 25-26th and got that price (See screenshot).
I know the example given is short turn around, but play with the dates, it's just too late at night for me to build a list of possibilities :/
United is a full service airline, they'll give you checked luggage, entertainment and food. (no comments about guitars or doctors)
Evidence of price: https://imgur.com/a/fXGLDZJ
Airline: United Airlines
Alliance: Star Alliance
From: Sydney, Australia
To: New York, New York, USA