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Planning a flight to an AFL final is like trying to decide when and how to hop on an amusement park ride that hasn't stopped.

You don't know where you need to be until the very last minute, and by then, it seems everyone else wants to be there too.

This annual dilemma is now in sharp focus, with preliminary finals coming up this weekend. Sydney will face Port Adelaide at the Sydney Cricket Ground on Friday night, then Geelong will take on Brisbane in Melbourne on Saturday.

Getting to these locations on the right dates can be no mean feat, and some fans have already been stung by surging prices. For those who tried to book over the weekend, prices to fly from Adelaide to Sydney in time for Friday's game reportedly ranged from $597 to an eye-watering $1,723.

Australia's airline duopoly is already under intense scrutiny. According to government data released this week, domestic airfares have risen by more than 10% since Rex shut down its capital city services.

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