A travel advisory on the airport's website Sunday advised those with travel plans, or those who are supposed to meet those arriving in Philadelphia, to check the status of flights before leaving home.
For flight information, call the airport at 800-745-4283 or visit the airport's website at http://www.phl.org.
The PATCO website said Sunday afternoon that it would operate on a snow schedule Monday, with trains running every 10 to 15 minutes.
SEPTA said it "will begin winter-weather related detours and route curtailments at 4 a.m. Monday," according to an e-mail from SEPTA's Manuel S. Smith.
Smith urged passengers to check with the system status tool at www.septa.org for information about changes to service.
Officials there already have made changes to the Norristown High-Speed Line schedule. That route will run every 15 minutes on Monday morning with two-car trains. "This means there will be no express, Hughes Park, or Bryn Mawr service," Smith said.
SEPTA riders can call 215-580-7800 to get updates from the transportation agency's automated schedule line or to speak with a customer service representative. Riders also can ask questions via Twitter, @septa_social, from 5 a.m. to 10 p.m. Monday.
The Pennsylvania Turnpike Sunday was operating under a "Winter-Weather Warning," according to an e-mail advisory.
Extra maintenance crews and State Police patrols are on duty across the turnpike, clearing the roadway and assisting motorists as needed. For safety reasons, drivers should not pass plow trucks.
The advisory said speed limits could be temporarily reduced to 45 m.p.h. Sunday night or Monday depending on conditions.
"At some point during the storm, the Turnpike could also ban certain types of commercial and private trailers if necessary," the advisory said.
Information on turnpike conditions can be found online at www.paturnpike.com/webmap or by telephoning 866-976-8747.