American will begin testing free Wi-Fi on three domestic routes, two of which depart Charlotte. Other airlines, like Delta, have already expanded their free Wi-Fi networks for members. American Airlines has announced that it is taking a step forward in its customer experience by exploring the expansion of its in-flight connectivity.

What differentiates service on one domestic airline from that of its rivals? In recent years, the industry has seen some outliers shift their practices, as Southwest Airlines recently did by ending its policy of open seating.

American Airlines flight passes for Wi-Fi can often cost more than $20, but some fliers will soon get it for free.