Boingo today announced that it will now offer AT&T subscribers access to its hotspots at international airports beginning today, with service expansions planned throughout the rest of the year. Simultaneously, Boingo subscribers will be able to access AT&T hotspots free of charge. This expansion means that AT&T users traveling abroad will have a much wider Wi-Fi access footprint, which should ease roaming charges for the customers. The arrangement ultimately shores up gaps in both partners’ networks, and helps to reduce AT&T’s network congestion, which should, in the long run, reduce infrastructure costs. In the end, customers win with this move, as it’s now likely more difficult to run into overage territory, and much easier to access higher quality Internet access in a wider variety of locations.