Domestic Flights Within USA
Most international travelers arrive through one of eleven gateway airports, such as Boston, New York, Washington DC, Atlanta, Miami, Chicago, Dallas/Fort Worth, Huston, San Francisco, Los Angeles, or Seattle.

The port-of-entry may not be the final destination for many travelers. You may have to take a domestic flight to reach your final destination. If this is the case, locate the appropriate domestic airline counter. If you need help or directions, you can ask airline personnel, security officers, or other airport support staff located at the information desks.

If you have not already been issued a boarding pass, you will need to obtain it from the domestic airline counter. These counters may be far away, or even at different terminals. If this is the case, you can take a free airport shuttle service (bus or train, depending upon the airport). Most of the time, TV screens and announcements are continuously made in the shuttle. However, if you are still unsure, you should speak to the driver in advance. 

When you've reached your domestic airline counter, you can check in your baggage and receive your boarding pass.

After you've arrived at your final destination, collect all of your checked in baggage. If you are visiting relatives, depending on your arrangements, they may be there to pick you up.
If you are traveling on business or are new temporary worker to the U.S., your company might have arranged for transportation. If this is the case, your driver might be holding a large sign with your name on it, as he is waiting to take you to your destination.

You should always keep contact phone numbers handy, just in case.

If you were unable to make transportation arrangements, or your arrangements fell through, go to the information counter at the airport, where you will find information regarding taxi cabs or shuttles.

Connecting Flights
If you are connecting from an international flight to domestic flight, your connection may be in a different terminal. Or, if your previous flight was late, you may miss your next flight. If you miss your connection, you may be rescheduled for the next available flight. Depending upon the airline, traveling class, and the ticket booking class, there may or may not be a charge for rescheduling the missed flight. If your regular flight is cancelled due to a problem outside of your control (such as inclement weather, mechanical problem, etc.), you may be rescheduled by the airline at no charge.