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Codeshare and Interline Flights

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Codeshare and Interline Flights

Don’t know the difference between codeshare and interline flights? Want to know how you check in, what the baggage allowance or other FAQs? Read Alternative Airlines' guide to codeshare and interline flights.

Codeshare flights

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A codeshare agreement is where two or more airlines use the same flight number in a mutually beneficial agreement. This means that passengers can purchase a flight from one airline, using their flight number for a flight on another different airline. For example, you can purchase a seat on a plane under one airline, but it will actually be a seat on the plane of a different airline, which share the same flight number or code. Codeshares often happen within alliances, such as OneWorld or SkyTeam, but not always.

 

Check-in for codeshare flights

Checking in for your flights can often cause confusion for passengers, as they may be unsure which company to use to check in. However the answer is generally the operating carrier. That is the actual airline that you will be flying with, not the one you purchased with. For example, in the example below in the FAQs, you would check in for both flights with British Airways.

 

Baggage for codeshare flights

Like with check-in, baggage allowances for codeshare is usually that of the airline operating the flight. However, your baggage allowance will be shown on your ticket so it is best to follow the information provided on your ticket.

 

Interline Flights

An Interline agreement, also known as interlining, interline ticketing or interline booking, is an agreement between two or more airlines to handle passengers when their itinerary involves travelling on multiple airlines. This means they agree to handle their baggage until their final destination, and check-in for their destination. A codeshare flights differs to a interline flight because a codeshare flight is the whole flight, whereas a interline is one flight within a wider itinerary.

 

Check-in for interline flights

Most interline agreements involve a section on check-in, which means that the customer should only have to check in for their whole itinerary once. This is usually with the airline which operates the first segment of the flight. However, if you are unsure, check with the airline to ensure you are checking-in for the whole itinerary, and with the correct airline to avoid extra charges or missed flights.

 

Baggage for interline flights

Baggage for interline flights usually means that the airlines deal with your baggage, ensuring that it is carried till your final destination. This means that you will check your baggage at the departure airport and the airline will process this until your destination where you can pick it up. Some airlines do not participate in interline agreements, such as WOW Air who ask passengers to treat connecting flights with other airlines as if they are the first flight in your journey, and the passenger will have to collect their luggage and check it in with the next airline themselves.

 

Codeshare and Interline
FAQs

How do I know if my flight is a Codeshare flight?

You will know if your flight will be part of a codeshare as it will show as ‘Operated by’ in the search results on Alternative Airlines. An example of a codeshare agreement is shown below, a FinnAir flight operated by British Airways and an American Airlines flight operated by British Airways. Therefore there is a codeshare between FinnAir and British Airways, and between American Airlines and British Airways.

Screengrab of Alternative Airlines flight search showing codeshare flights

What is the difference between an Interline flight and a codeshare flight?

An interline flight is an agreement between airlines to coordinate passengers with an itinerary that uses multiple airlines, without having to check in again or deal with their baggage at the stopover. Codeshare agreements is where airlines operate flights on behalf of another airline, using their flight code. For example, a ticket you purchased from Finnair but is operated on a British Airways plane, by British Airways.

 

Why are there Codeshare flights?

Codeshares are beneficial to the airlines as it allows customers to reach new destinations that are not served by their own aircraft, meaning they can offer a larger variety of destinations, without actually flying there. This also means they can focus their services on the destinations they already offer, meaning more frequent services.

 

What are the smoking policies on Codeshare flights?

There are currently no airlines that permit smoking on their planes, regardless of being part of a codeshare or not.

 

Who does Emirates codeshare with?

Emirates partners with many airlines, including Air Malta, Malaysian Airlines, Alaska Airlines, Qantas, Copa Airlines, Flybe, Japan Airlines, WestJet and Jetstar Airways. The airline also partner with flydubai, expanding its network to flydubai’s 91 destinations.

 

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