import re
text = """Depart: NYC (etd 9/30), NJ (etd 10/4)
Arrive LAX
Rate: USD500, 700P"""
m = re.search(r'(?s)NYC.*?\b(\d{3,})', text)
if m:
print(m.group(1))
aW1wb3J0IHJlCnRleHQgPSAiIiJEZXBhcnQ6IE5ZQyAoZXRkIDkvMzApLCBOSiAoZXRkIDEwLzQpCkFycml2ZSBMQVgKUmF0ZTogVVNENTAwLCA3MDBQIiIiCm0gPSByZS5zZWFyY2gocicoP3MpTllDLio/XGIoXGR7Myx9KScsIHRleHQpCmlmIG06CglwcmludChtLmdyb3VwKDEpKQ==