Most Interline agreements include a section on registration, which means that the customer only has to register once for the entire itinerary. This is usually the case for the airline that operates the first segment of the flight. However, if you are unsure, contact the airline to make sure you check in for the entire itinerary and with the right airline to avoid extra charges or missed flights. In 1967, Richard A. Henson joined the country`s first codeshare relationship with US Airways` predecessor, Allegheny Airlines.  The term “codeshare” was coined by Qantas and American Airlines in 1989 and in 1990, the two companies made available their first codeshare flights between a number of Australian and American cities. Since then, the sharing of parts of codes has spread in the aviation sector, particularly as part of the formation of major airline alliances. These alliances have extensive code-sharing and network loyalty programs. Don`t know the difference between codeshare and interline flights? Do you want to know how you check in, how much free baggage or other FAQs are available? Read Alternative Airlines` guide to code-sharing and interline flights. Delta has and has agreed with IS. You will only check your bags if you have a ticket, not 2 separately. -AIRLINES HAVING AGREEMENT WITH: DL EI T P E > If you have 2 separate tickets, DL can still only do so if you wish. @Hung Nguyen: Just a word of caution.
Although QR has an interline agreement with the UN, most of these agreements only apply if you are travelling with a ticket, but not with separate tickets. There may be exceptions, but I don`t expect to check luggage for separate tickets. This code-sharing agreement can be a convenient way for a forwarder to allow access to a market without necessarily entering into a large-scale sales contract. In many cases, space regulation is used when participating companies are not part of the same alliance or are generally not partners in any other way. It`s quite complex. The exporting airline essentially “sells” a certain block of seats on its flight (usually seats assigned on the seat card) to the marketing company. The marketing carrier, on the other hand, sells these seats to customers as if they were its own. The marketing carrier retains full control of the booking from the booking to the time of transfer to the exporting airline.