President Obama’s plan to schmooze Wall Street honchos at a Westchester fund-raiser Friday is grounding wealthy weekenders who planned to fly to the Hamptons or Nantucket for the Labor Day holiday.

The FAA has issued a no-fly warning that extends for most of Friday and all day Saturday through Sunday, grounding seaplanes to East Hampton, Montauk, Martha’s Vineyard and Nantucket.

On Friday, Obama will be feted at the home of one of his top bundlers, 32 Advisors’ Robert Wolf, in the aptly-named Purchase, NY, with 250 high-rollers paying up to $32,000 each to bend Obama’s ear.

Obama will then fly to Newport, R.I. for an event to benefit House Democrats. Melissa Tomkiel, president of seaplane companies, Fly the Whale (which flies from NYC to the Hamptons and Nantucket) and Tailwind (NYC to Boston and DC), told us, “A flight restriction was issued banning operations in the NYC area due to the president’s visit on Friday for practically the whole weekend, causing major business losses and inconvenience for our passengers on the busiest weekend of the year. It is frustrating. We have had to move at least 10 flights and cancel a number of private charters, costing us thousands of dollars. We count on this weekend to get us through the quieter months of the year. This will create a perfect storm on a holiday Friday, creating air space havoc between New York City and Boston.”

As of Wednesday, the flight restrictions occur from 2 p.m. until 5:45 p.m. Friday, then start again at 9:15 p.m. Friday night and extend until Sunday at 10:30 a.m.

The White House didn’t immediately get back to us last night.