Interline agreements differ from codeshare agreements in that codeshare agreements generally relate to the numbering of a flight with the airline code (abbreviation), although the flight is operated by another airline. However, codeshare relationships may affect whether an interline ticket (or e-ticket) can be issued, as both the codeshare airline and the codeshare operator must have interline agreements with all other airlines on the route in order for a single ticket to be issued. The MITA Daily Files provides all information regarding multilateral agreements in a CSV format for your system integration. The data files are updated daily and will keep you informed of the most recent agreements. Available for less than 12 months of subscription and provided via iiNET. Interlining, also known as interline ticketing and interline booking, is a voluntary commercial agreement between individual airlines to process passengers traveling on routes requiring multiple flights with multiple airlines.  Such agreements allow passengers to switch from one airline flight to another without having to pick up their luggage or check it in again. Airlines can also promise a free rebooking if the route is interrupted due to a delay. With the bilateral interline ticketing agreements (BIETA/(Passenger Only), you benefit from up-to-date information on more than 10,600 E-Ticketing Interline Agreements in order to directly update your databases. It is available as an Excel file. Updated every day and accessible by secure or distributed extanet access via FTP. Smaller legacy carriers typically have interline agreements with larger network carriers that fly to their markets. Most low-cost airlines, which only sell directly to consumers (and not through global agencies or distribution systems), do not support interlining at all.
Line-spacing agreements are a turning point. For example, it may be possible for American Airlines to issue the ticket on an American United route, but United may not be able to be on the same route. Such an interline unilateral agreement is called an interlateral line. Airlines may also agree to conclude a bilateral interline agreement in which each airline can issue the ticket to the other airline. These agreements facilitate cooperation between airlines3 The number of multilateral/bilateral agreements to which debtors are bordering makes it very difficult to identify each of these agreements, but debtors strive to remedy all interline agreements, whether or not a particular agreement is listed in Annex A. If there is no online ticketing agreement, two tickets must be issued separately and passengers must collect their luggage and bring it to the connecting company for check-in. Routes with such interline connections are riskier for travelers, as the second airline may not experience delays or problems with the arriving flight, and in case of loss of the route, it is less likely that there will be a free rebooking. There may also be a problem if the luggage is lost and the traveler wants it to be sent to them later.
When a ticket is issued for an interline route, one of the airlines on that route is chosen by the ticketing agent as the issuing airline, commonly referred to as a “plating company”. Plating Carrier collects the total price of the ticket from the customer, either through its own distribution channels (e.g. B website or ticket office), either through travel agencies. Travel agencies pay the airline fares and taxes collected through the Airlines Reporting Corporation (ARC) in the United States or through the Purchase and Settlement Plan (GNP) in the rest of the world. . . .