How does flight code sharing work?

Overview. Code sharing is a marketing arrangement in which an airline places its designator code on a flight operated by another airline, and sells tickets for that flight. Airlines throughout the world continue to form code-share arrangements to strengthen or expand their market presence and competitive ability.



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Codeshare flights For example, you can purchase a seat on a plane under one airline, but it will actually be a seat on a plane of a different airline, which shares the same flight number or code. Codeshares often happen within alliances, such as OneWorld or SkyTeam, but not always.

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In most cases, if you are booked on a single itinerary with Air France for example, and your first flight is with Air France, and the second is a codeshare on KLM, you will not have to recheck bags during the layover to KLM. Your bags would be ticketed and checked all the way through to your final destination.

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Are codeshare flights eligible for Star Alliance Upgrade Awards? No. Star Alliance Upgrade Awards are only available on flights marketed and operated by the same partner airline.

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This gets a little tricky if the canceled flight is a connecting one, as yours was. In that case, the law only entitles you to a refund for “unused transportation.” So you won't get the full cost of your ticket back — you'll just get some of it.

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Yes, but only using a Wi-Fi connection. The ban on using a cellular connection means passengers can't send SMS texts. Any communication has to be over Wi-Fi with a messaging app that provides similar functionality like iMessage, WhatsApp, or Viber.

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“Many airlines use only the data on the boarding pass, specifically the confirmation code and last name to allow full access to your online account. These can be abused to access your personal data that is stored by the airline.”

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It's not uncommon for two distinct flights to have the same number. For example, DL10 consists of a narrow-bodied jet flying from Denver to Minneapolis–St Paul and then, two to three hours later, a wide-bodied jet flying from MSP to London Heathrow1; AA55 splits Manchester–Chicago–Orlando.

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