Transportation to and from the Boston area was nearly shut down Friday — with the exception of air travel — amid the marathon bombing manhunt.
Amtrak service, meanwhile, between New York and Boston was suspended indefinitely early Friday afternoon.
Flights were coming in and out of Logan International Airport. "Logan is open and operating under heightened security," Boston Airport tweeted early Friday.
Meanwhile, the FAA has closed low-level airspace over Northwest Boston to provide safety.
New York-Boston Amtrak Service Suspended
While Amtrak service between New York and Boston was suspended indefinitely, Amtrak service was operating normally between Washington, D.C. and both New York and Philadelphia.
Earlier, Amtrak Acela Express and Northeast Regional service was suspended indefinitely between Providence, R.I. and Boston, according to a company statement. Amtrak Downeaster was operating a modified schedule with no service to Boston.
The Springfield Shuttle between New Haven, Conn. and Springfield, Mass. was operating on a normal schedule.
A decision about restoring Boston area service will be made when local authorities inform Amtrak that operations can resume.
The Massachusetts Bay Transportation Authority, which operates commuter trains into Boston as well as the city's subway — called the T — and the city's buses suspended all operations.
While Logan airport remains open, getting there will be a challenge for many passengers as city transportation remains on lockdown. On a typical day, the airport has about 1,000 flights, according to flight tracking site FlightAware.
JetBlue, the largest airline in Boston with about 100 daily flights, is allowing anybody scheduled to fly to or from Boston to change their ticket for free. American, Southwest, Spirit, United and Virgin America also issued travel waivers on Friday.
On the hotel front, Hyatt is waiving cancellation fees for its hotels in Boston and Waltham.
Bus Travel Affected
The city lockdown has also hit bus travel. Megabus has canceled at least 18 buses between Boston and New York, New Haven, Conn., Hartford, Conn., Burlington, Vt. and Philadelphia. More than 1,000 passengers were affected, according to spokesman Mike Alvich. They received emails offering a refund or the option to rebook for free.
Bolt Bus, Greyhound and Peter Pan Bus Lines have all also suspended service. Passengers booked on canceled Bolt trips have already received refunds to their credit cards, according to Timothy Stokes, spokesman for Greyhound and Bolt Bus.
—The Associated Press and Reuters contributed to this report.