Originally Posted by
Rami Tamimi
For some reason, not all airlines allow much more than 24 hours. In my experience, the price on MU jacks up when you select a stopover longer than 24 hours, whereas 3U allows up to a week. Not saying that this is the case for all markets, but this it what I saw.
Stopover promotions are often driven/subsidized by government (national, provincial, local) and/or various tourism related entities.
They are also a lever airlines use to stimulate demand, especially on routes that don't have robust O&D.
For both of these reasons, they are more common in second tier markets that are keen on promoting themselves (e.g. Xiamen, Hangzhou, Chengdu, Xi'an), but they also pop up in Beijing and Shanghai, especially during slower seasons.
In any event, as I mentioned in the post to which you replied, this is the first time I've seen ANY competitive US-SE Asia fares offered by a Chinese airline since 2019, so I definitely regard it as a positive development.