Southwest Airlines on Tuesday filed with U.S. regulators asking for a permit to fly more international routes, including Europe, hinting at plans to expand its limited global network.

Southwest Airlines is hinting at an upcoming international expansion. The carrier has asked the Department of Transportation for permission to fly to any country the U.S. has an Open Skies aviation agreement with.

Southwest Airlines Co. has filed with the US Transportation Department for authority to fly to any country with which the US has an Open Skies aviation agreement, signaling the carrier intends to expand its small international route network.

Southwest Airlines on Tuesday asked the Transportation Department for permission to fly to any country with which the US has an Open Skies treaty.

Ahead of its shareholder meeting, Dallas-based Southwest Airlines filed an application seeking approval from the DOT to fly in any country subject to the Open Skies agreement. The application could set the stage for Southwest to expand its international flights beyond its current offerings,

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