Philippine Airlines: What's the transit experience like in Manila?

Whether this timing works depends on whether it's a single through ticket and whether the baggage is checked through to the final destination. If the tickets are booked separately, that's a different story—don't just look at the layover length.

If my previous flight is delayed, can business class passengers disembark first or use a fast-track lane? Also, when transferring between different terminals at Manila Airport, should I allow more time? Will this cost extra or affect my onward arrangements?

The real challenge is immigration and changing terminals—an hour and forty-five minutes is really tight.