I'm in for early Feb and need to book a same day positioning flight from SGN to start this fare in PNH (funny, I know).

From what I read, Cambodia transit visas are not required by passengers leaving Phnom Penh International Airport on the same aircraft they arrived in. This is the only entry point through which day trips to Cambodia are permitted without a transit visa.

It would appear I can do an immediate turn with QR on a separate ticket and avoid a Cambodian visa? I see seats from ~$140 or 7,000 Avios + $57, SGN-PNH.