What is a self transfer flight?
A self transfer flight is an itinerary made of two separate tickets rather than one. You collect your own bags, check in again for the second flight, and no airline is responsible if the first leg lands too late to make it.
Self transfer flight explained
Search engines surface these routings because the combined price often undercuts anything sold as a single ticket. Google Flights labels them self transfer, and other sites use terms like virtual interlining or hacker fares. The label is doing important work, and it is worth reading rather than clicking past.
The risk is concentrated in one place. On a single ticket a missed connection is the airline's problem. On two tickets the second carrier has sold you a seat on a flight you failed to board, which is treated exactly like any other no show. You buy a new ticket at whatever the walk up fare happens to be that day.
Practical friction adds up as well. Bags come off at the intermediate airport and have to be collected, which means clearing immigration in many cases, then checked in again with a different airline that has its own cut off time. Three hours can disappear faster than it sounds when passport control has a queue.
Some booking platforms now sell a protection product that promises to rebook you if the connection fails. Read what it actually covers before relying on it, because the payout ceiling and the definition of a qualifying delay vary a great deal. For a business class itinerary where the onward leg is expensive to replace, the maths rarely favours the saving.
More on self transfer flight
It is legitimate, but the risk sits entirely with you. If the first flight is late, the second airline owes you nothing. It suits flexible travelers with hand luggage far better than anyone on a fixed schedule.
Considerably more than an airline would require for a protected connection. You need to clear immigration, collect bags, find the other terminal and check in again, all before that airline's own cut off time.
Yes. Because the tickets are unconnected, the first airline has no instruction to send your bag onward. It comes off at the intermediate airport and you check it in again yourself.
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