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Domestic and international flights
Air travel can be separated into two general classifications: national/domestic and international flights. Flights from one point to another within the same country are called domestic flights. Flights from a point in one country to a point within a different country are known as international flights.
Travel class on an airplane is usually split into a two, three or four class model sevens. US Domestic flights usually have two classes: Economy Class and a Domestic First Class partitioned into cabins. International flights may have up to four classes: Economy Class; Premium Economy; Business Class or Club Class; and First Class.
Most air travel starts and ends at a commercial airport. The typical procedure is check-in; border control; airport security baggage and passenger check before entering the gate; boarding; flying; and pick-up of luggage and - limited to international flights - another border control at the host country's border.
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- Chasing the Sun - History of commercial aviation, from PBS
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