Last update: 9:20 p.m. ET.  

TUESDAY UPDATE: Another day, another nor’easter. That’s how it must feel for air travelers this week as a potent coastal storm snarled flights for the third time in less than two weeks. Nationwide, airlines have canceled more than 1,450 flights on Tuesday and another 138 on Wednesday, flight-tracking service FlightAware counted as of 7:10 a.m. ET. 

FULL STORYTuesday: Most Boston flights grounded, cancellations spread nationwide

MONDAY'S POST (latest update at link above): Air travelers may want to check the status of their flights if they're flying through the Northeast on Tuesday or Wednesday.

Airlines have preemptively canceled nearly 1,365 flights for Tuesday and another 133 for Wednesday, flight-tracking service FlightAware.com counted as of 9:20 p.m. ET on Monday. 

The wave of cancellations came ahead of the third nor’easter that's expected to hit the region in less than two weeks' time. Hardest hit was Boston, more than two-thirds of Tuesday's flights had been canceled as of Monday evening. More than half had already been grounded at the airports serving Hartford, Conn., and Providence, R.I. 

LISTAirlines waive change fees (again!) for new nor'easter

More cancellations were possible. The storm was forecast to bring up to two feet of snow to parts of eastern New England.

On Monday itself, about 330 flights had been canceled nationwide; at least a third of those came as airlines canceled late-day flights bound for New England and the Northeast to prevent planes from becoming stuck as weather moved in overnight. 

"In anticipation of the heavy snowfall and to position the airline to quickly reset the operation once the storm passes, Delta will ferry aircraft away from northeast airports, strategically positioning them outside of the storm's range, preventing the aircraft from becoming covered with large amounts of snow and ice," Delta Air Lines said in a statement outlining its storm preparations.

FLIGHT TRACKER: Is your flight on time?

IN PICTURES: 30 cool aviation photos (story continues below)

American Airlines said it would suspend all operations Tuesday at Boston’s Logan International Airport and four other New England airports (Bangor, Maine; Burlington, Vt.; Manchester, N.H.; and New Haven, Conn.). 

Southwest made a similar move, pulling down its entire Tuesday schedule at Boston; Hartford; Providence; Long Island/Islip, N.Y.; Portland, Maine; and Manchester.

Other airlines made similar moves as the likelihood of of heavy snow becamre more certain. JetBlue, which operates its second-busiest airport at Boston, said it planned to operate only a few late-day arrivals there so that it could have planes in place to resume operations on Wednesday morning.  

Aside from Boston, the storm was likely to snarl overall flight schedule as the region’s other busy airports, such as Providence; Manchester, N.H.; and Portland, Maine. 

Numerous smaller airports also were likely to be affected, not only in New England, but also in New York state. 

In addition to American, preemptive cancellations were already streaming in on other carriers. Southwest had already canceled more than 200 flights on Tuesday. Delta said it expected to cancel about 175 flights.  

PHOTO ARCHIVES: Atlanta: Snow snarls flights at world's busiest airport 

AFP AFP_MN3TE A WEA USA MA
This file photo from March 14, 2017, shows many cancellations on a flight information screen inside Boston's Logan International Airport as a major snowstorm slammed the region.
Ryan McBride, AFP/Getty Images