I kind of agree with Stexup. 1500 hours
The Final Rule
Directed by Congress, the Airline Safety and FAA Extension Act of 2010 called for increased minimum requirements for airline first officers. The new rule mandates that airline first officers hold an air transport pilot (ATP) certificate or the new “restricted ATP.”
An ATP certificate requires, among many other qualifications, that the pilot be at least 23 years old and have logged at least 1,500 hours of flight time.
The “restricted ATP” requires pilots to be at least 21 years old with
750 flight hours if they are military-trained and qualified,
1,000 flight hours if trained in a four-year college or university-accredited aviation training program leading to a bachelor’s degree, or
1,250 flight hours if trained in a two-year college aviation program leading to an associate’s degree.
Pilots who obtain their certificates and ratings via non-structured general aviation flight training can qualify for the restricted ATP at age 21 with 1,500 hours of flight time.
The new rule also requires, per ALPA’s recommendation, that first officers be “type rated” in the aircraft they fly in airline service—i.e., receive special training and testing on operation of that specific aircraft type.