Air Greenland just announced that it's discontinuing service between Baltimore and Greenland. The service made news when it was begun last year because it was the first time U.S travelers could reach Greenland on a nonstop flight. Passengers who booked flights for the 2008 summer season (the airline was only flying June through August) can get refunds. To reach Greenland, you have to fly via Reykjavik, Iceland (from New York-JFK) or via Copenhagen.
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