You can fly charters into one city and return from somewhere else. The principal difference between chartered and scheduled flights is that with charters you deal directly not with airlines but with entities known as wholesale tour operators. Tour operators charter entire planes or segments of planes from airlines to fly specific routes at specific times. The main advantage of charter flights is price. Other large operators even allow some flexibility for altering your return trip, although this privilege cannot be counted upon on every charter.
Charters often provide the only nonstop or direct service overseas from interior cities.
Charters don't go everywhere. While many charter flights take off for Europe or Southeast Asia, few are available to countries whose governments have protectionist policies toward national or state-owned airlines. Consequently, few charters are available to the Far East. Charters have limited and inflexible schedules. You can stay any number of weeks, but you cannot fly within the week or on any other day.