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O. CRS. Stopover.
O&D traffic. Origin and destination traffic. The passengers on a flight who are either boarding or deplaning at a particular stop, as distinct from those remaining on the plane to go to another destination.
OAG. Official Airline Guide.
occupancy rate. The percentage of hotel rooms occupied during a specific time period, omitting rooms not available for one reason or another.
OCNFT. CRS. Oceanfront.
OCNVW. CRS. Ocean view.
off airport location. A car rental company that does not have a counter in the terminal building. See also on airport location.
offline airline, offline carrier. Any airline other than the one or ones that own and/or control a particular computerized reservation system.
offline connection. A change of planes that also involves a change of airlines.
offline point. A destination with no service from a particular airline or other carrier.
off-peak. adj. Occurring or applicable during a period of less travel or demand, as in a flight or a fare.
off-season. n. A period of the year when demand for a destination decreases and prices go down. Also used as an adjective, as to describe a price or fare applicable during such a period.
OHG. Official Hotel Guide.
OJ. CRS. Open jaw (qv).
OK. CRS. Confirmed.
Old Glory. Nickname for the U.S. flag.
OMFG. Official Meeting Facilities Guide.
omnibus. Obsolete term for a bus, motorcoach, or similar mode of transportation.
on airport location. A rental car company with a counter in the terminal building. See also off airport location.
one-way trip. Any trip for which a return leg has not been booked.
online carrier. An airline that can provide immediate access through a computerized reservation system (qv).
online connection. A change of planes that does not involve a change of airlines.
OP. CRS. Other person.
open bar. Beverage service which is free for guests.
open jaw. A trip that has no air travel between two points on the itinerary. See also arunk.
open jaw with side trip. An open jaw itinerary with an additional roundtrip from one of the cities on the itinerary.
open pay, open rate. A rate of payment or compensation that is subject to or will be determined by negotiation.
open segment, open ticket. An airline ticket with no date specified.
open seating, open sitting. Seats or tables are not assigned and will be occupied on a first-come basis.
open skies. Referring to an agreement between two countries allowing unrestricted air services between them.
open ticket. A valid ticket that does not specify flight numbers, dates, or times. The holder of the ticket makes arrangements at a later date.
open water. Portions of the sea that are far from land in which a cruise ship might experience greater motion or rougher seas.
operator. Any company providing airline, cruise, hotel, or other services.
OPNS. CRS. Operations.
OPT. CRS. Option (qv). Option date (qv).
option. 1. An additional excursion or other element that need not be taken. 2. Option date (qv).
option date. Date by which payment must be made to secure a reservation.
optional. Adj. Used to describe any product or service that is not included in the base price but which may be added at the customerÕs discretion for an additional cost.
ORG. Official Recreation Guide.
orientation. A meeting or training session designed to provide a basic understanding or overview of a subject.
ORIG. CRS. Origin. Originating. Originated.
origin. The starting point of travel.
origin and destination traffic. See O&D traffic.
ORML. CRS. Asian meal.
O/S. Abr. On a ship, an insider cabin.
OS. 1. Abr. Outside sales. Outside sales representative. 2. Operating System (for computers), such as Windows, Linux, etc
OSI. CRS. Other service information (qv).
OSSN. Outside Sales Support Network.
OTC. Abr. One-stop inclusive tour charter.
OTD. Official Tour Directory.
other service information. Notes attached to a PNR (qv) which do not require attention by the airline.
OTHS. CRS. Other services. Other service information (qv).
OUT. CRS. Departure date, as from a hotel.
out plant. adj. Referring to a travel agency office on the premises of a corporate client at which reservations may be made. The actual ticketing is handled at another location.
outback. In Australia, extremely remote or desert areas.
outbound. adj. Referring to the leg of the journey departing the city of origin to the destination or destinations.
outfitter. 1. Any company that sells equipment for any of a broad range of outdoor activities. 2. A company that provides guided group or individual outdoor activities, such as whitewater rafting, trekking, camping, etc., including the use or rental of appropriate transportation and equipment.
outrigger canoe. A Polynesian style, oared vessel with an extending arm that provides stability.
outside cabin. On a ship, a cabin with a porthole, window, or occasionally a private terrace.
outside sales. A department or activity devoted to developing business through direct solicitation of potential customers away from a retail location.
outside sales representative. A person engaged in outside sales. May be an employee or an independent contractor.
outskirts. The outlying areas of a city.
outsource. To retain a separate specialist company to handle certain internal business functions.
overbooking. The practice of taking more reservations than there are seats, rooms, or space in the expectation that no shows (qv) will bring the number of reservations actually used below maximum occupancy.
overhead. 1. A storage compartment located above head level, as on an airplane. 2. The fixed expenses, such as rent and utilities, of a business.
overland. 1. Taking place on land. 2. Referring to travel that takes place off roads.
overlook. A turnoff on a highway or other location offering a scenic view.
override, override commission. An additional commission percentage paid when a certain volume level is achieved.
oversale. See overbooking.
oversell. 1. See overbooking. 2. v. To sell too aggressively; to exaggerate the features or benefits of a product.
oversupply. Excess capacity, as of airline seats or hotel rooms.
OW. CRS. One-way.
OX. CRS. Cancel if requested segment is available, otherwise hold.
ozone layer. A high atmosphere phenomenon providing shielding from the sun's ultra-violet rays. Degradation of the ozone layer in some areas (such as extreme southern South America and Australia) requires travelers to take additional precautions against overexposure to the sun.