AAA says as many as 35 million Americans will travel for the Labor Day holiday, which marks the unofficial end to summer.

A record 17.5 million people are expected to fly, but most will be hitting the roadways. Gas prices are at their lowest point in three years. 

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AAA says the national average is down about 25 cents from last year to $2.59 a gallon. On Long Island, it is nearly $2.74 a gallon.

The Long Island Rail Road will be running extra afternoon trains east of Penn Station to accommodate those heading to the Hamptons. It will operate on a special schedule on Monday.