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I'd like to fly from Israel to Australia and to have the possibility of returning more than a year after the outgoing flight. So far the flight conditions I have checked only allow up to a year difference between the outgoing and the return flight, and even if I change the date of the return flight, I can only do this to a date which is up to a year after the outgoing flight.
Is there a way to do this without paying for two one-way flights?
The reason is that one-way flights tend to be around the same price as two-way flights and I will end up paying much more if I book two one-way flights.