Feb 23 (Reuters) - U.S. airlines were still digging out

from a powerful Northeast winter storm that forced ​more than

8,000 flight cancellations and delays ‌on Monday, with thousands

more already scrubbed for Tuesday.

FlightAware, a ⁠flight tracking site, said 5,683 flights in

the United ⁠States had been canceled and 2,703 ‌delayed after ‌more

than 11,000 were delayed or canceled on Sunday. Another 2,000

U.S. ​flights have been canceled ‌for Tuesday.

American Airlines ( AAL ) said it had been able to resume

operations at Washington Reagan ​National and Philadelphia.

Delta ​and American ‌both said they expect to resume

operations at New York's LaGuardia and JFK airports and ⁠Boston

late on Tuesday morning. Delta also expects ⁠to resume Newark

flights on Tuesday.

JetBlue ( JBLU ) was especially hard hit, canceling about

80% of flights due to the storm on Monday, FlightAware said. The

airline said ⁠in ‌total it has cancelled 1,600 flights ‌through

Wednesday.

U.S. passenger railroad Amtrak canceled dozens of ⁠trains

between New York and Boston and on other routes in the

Northeast. Several states ordered motorists to remain off roads

for non-essential travel for extended periods due to the

significant snowfall.

American, Delta and United all canceled about ​20% of flights

on Monday. The blizzard dropped more than 2-1/2 feet of snow

(76.2 cm) across ​parts of the U.S. ‌Northeast.