MINNEAPOLIS - As Hurricane Sandy continues to pound the east coast, frustration at airports grows. All major airlines have cancelled flights in areas hit hardest by the storm.

According to FlightAware more than 15,000 flights have been cancelled because of Sandy. In Minneapolis, more than 80 flights were cancelled Tuesday due to the storm.

In the heart of New York City, the subway system is flooded.
Recovery could take weeks, according to Mayor Michael Bloomberg.

Metropolitan Transit Authority Chairman Joe Lhota described this as the worst disaster the agency has seen in over100 years.

"Clearly, the challenges our city faces in the coming days are enormous," Bloomberg said.

Travelers hoping to escape by Amtrak are stuck too. Train service in the northeast is suspended. Crews are currently inspecting tunnels and tracks and will decide soon if some service will be restored by Wednesday. Amtrak customers with disrupted travel due to the storm are eligible for a full refund or travel voucher.

Delta Airlines also plans to resume limited flying from LaGuardia and Newark Liberty by Wednesday evening.

Tim Husted, Director of Travel and Transaction Support Services for Carlson Wagonlit Travel, suggests anyone flying out of the Twin Cities to the northeast should check with their airline carrier before arriving at the airport.