Open jaw query

[Whisper2]

I managed to book LHR – SYD on BA15, but I failed to get the return, so I was hoping to book part of the way back using the open jaw rules, however I wanted to check my understanding as the BA15 is a direct flight but it does stop in SIN.
Using Great Circle mapper LHR – SYD via SIN is 9274nm
SIN to SYD is 3396nm
SYD to HKG is 3980nm
HKG-LHR is 5209nm

My understanding is that the open jaw distance must be less than both the flights. If me flight out is taken as the full BA16 9274nm then I am fine, but if it is taken as just the second leg of SIN to SYD then my jaw distance is greater than that flight.

Has any one booked an LHR -> SYD and HKG -> LHR open jaw?

[JDB]

@Whisper2 – it’s based on the full flight distance LHR-SYD, even if you were to stopover in Singapore, so returning from HKG is within the IATA fare construction rules which BA applies.

[Whisper2]

@JDB – thank-you for the clarification.

[travelmonkey]

I believe the open jaw distance would be what’s ticketed, regardless of stops or changes. So returning from SIN or HKG should be fine as an open jaw… and so would SCL!