direct flight is a flight to another city that stops at least once en route, but does not involve a change of equipment ( you do not have to change planes )
Other definition:
Direct Flight is the Flight which lands at one or more intermediate points en route to the destination, but with no change of aircraft.
Other definition:
Direct Flight is a flight that stops at another airport enroute to the final destination. Passengers remain on the plane during the stop.
Other definition:
Direct Flight is a flight which may make an intermediate stop or stops before reaching its final destination but requires no change of aircraft.
Other definition:
Direct Flight is a flight that stops at another airport, but passengers do not
change planes.
Other definition:
Direct flight is a flight that stops one or more times on the way to a destination, but does not require travelers to change planes.