Last year ( 2023) I had a great flight on Turkish business class from Ho Chi Minh city Vietnam to Tokyo Japan via Istanbul. This was booked as an award ticket. I'm on Miles and Smiles.

Recently when I checked award availability for this set of cities, the Turkish app shows no flights available on this date no matter what date I choose.

Have they changed the logic? Is this sector or routing no more possible? Is that in general or only for award tickets.

Does this also apply to any interest Asia travel? Used to be a sweet use of my miles!

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