The small fire broke out on Delta flight 5643, operated by Republic Airways, while the plane was at the gate at Boston Logan International Airport, airline officials said.
The fire started in a passenger’s carry-on bag and was quickly extinguished, officials added. No injures were reported.
An emergency slide appeared to have been deployed and first responders were on the scene, according to pictures posted on social media.
Passengers and crew eventually swapped aircraft and continued on to Pittsburgh, KDKA-TV reported.
“The safety of our passengers and crew members are our utmost concern, and we’re grateful to the first responders who were quickly on-site to make sure the situation was contained,” Republic Airways said in a statement, according to the station.
Authorities didn’t immediately say what caused the fire in the carry-on.
Delta Air Lines and Republic Airways didn’t respond to late-night requests for comment from Fox News.