Most online travel agencies only indicate itineraries that can be booked on one of their reservation systems. However, Orbitz sometimes displays inviolable interline routes. Examples have been found so far on routes to Mexico, which involve the absence of Aero California, or can currently be found on routes to Indonesia with Lion Air. These are displayed on Orbitz as a “contact airline to buy.” Airlines participating in airline alliances such as Star Alliance, SkyTeam or oneworld almost always have interline agreements. But direct competitors can also benefit from Interline agreements. With the arrival of low-cost airlines, special Internet fares and easy online booking, many airline passengers plan their own online trips without the help of a professional. However, this can create difficulties, especially when you are travelling to a destination that requires a connection with two different airlines. While two tickets can be easily booked for each flight, some will be surprised upon arrival at the airport that the luggage cannot be located to the final destination. The two airlines may not have an interline agreement covering baggage transfers. If there is no interline ticketing agreement, two separate tickets must be issued and passengers must pick up their luggage and take it to the connecting company for check-in. Interline routes such as this one are more risky for travellers, as the second airline may not be aware of inbound flight delays or problems and is less likely to authorize a toll-free change of booking in the event of a loss of the route.
There may also be a problem if the baggage is lost and the traveller wishes to be sent to them later. Jeff Fulton is a writer specializing in business, travel and culture. He has worked in international sales, customer relations and public relations for major airlines and has written for Demand Studios since May 2009. Jeff has a bachelor`s degree in journalism from Northwestern University and a Master of Business Administration in Marketing from the University of Chicago. Smaller airlines have generally entered into interline agreements with large network operators moving to their markets. Most new low-cost companies, which sell only directly to consumers (and not through global agencies or distribution systems), do not support the interline at all. The Interline agreements were designed to provide comfort to customers who could only travel to their destination through two different airlines. The agreements include fares for which the two airlines agree to publish a tariff from origin to the final destination, and then distribute revenues internally among them. The customer would not have to pay two fares based on each airline`s flight and could get a ticket with two flight segments. The agreement allows any airline to accept the ticket from the other airline and covers baggage transfer and liability. Freight shipments are often included in the agreements. International and national airlines traditionally participate in the agreements.
Many low-cost airlines do not participate or have limited agreements. Interline agreements differ from code-sharing agreements in that codeshare agreements generally relate to the numbering of a flight with the company`s code (acronym), although the flight is operated by another airline. However, codeshare relationships may affect whether an interline ticket (or e-ticket) can be issued, since the codeshare marketing carrier and code-sharing operator must have interline agreements with all other airlines in the itinerary for a single ticket to be issued.