Sprint says that users within range of a Boingo hotspot will now be able to automatically connect to the Wi-Fi network at no additional charge. From Sprint:
Sprint devices within proximity of a Boingo hotspot can automatically connect to the Wi-Fi network seamlessly, providing service at the fastest speeds available, be that cellular from Sprint or Wi-Fi from Boingo. The auto-authenticating Wi-Fi connections are available at no additional charge to all Sprint customers with capable devices, and usage while connected to Wi-Fi does not count towards a customer's monthly service plan.
As mentioned above, Boingo operates Wi-Fi hotspots in 35 major airports across the U.S., so if you're a Sprint customer, chances are you'll be able to take advantage of this service at some point during your next trip.
Source: Sprint
