Alaska Airlines said it will begin service from Seattle to Philadelphia in June and from Seattle to Fort Lauderdale, Fla. in July. The unit of Seattle-based Alaska Air Group Inc. (NYSE: ALK) said when it introduces its Seattle-Fort Lauderdale service on July 16, it will end service between Seattle and Miami, a route the airline has been flying for 10 years. "Philadelphia is one of the largest cities we don't currently serve from Seattle while Fort Lauderdale is a popular departure point for cruise ship passengers," said Joe Sprague, Alaska Airlines' vice president of marketing, in a statement.

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