Southeast Asia has 680 million people, over 60 commercial airlines, and almost no usable highways between its capitals. The narrow-body jet isn't competing with rail here. It replaced the bus, the ferry, and in many cases, the road that doesn't exist.
That's why everyone is fighting for the same sky.
The corridor from Bangkok to Jakarta, Singapore to Manila, Kuala Lumpur to Ho Chi Minh City is the most contested airspace in commercial aviation. No other region packs this many carriers, this many fare wars, and this many startups into such compact geography. Indonesia alone has produced over 20 airline bankruptcies since 2000.
They keep launching because the demand curve won't flatten. Southeast Asia's middle class is growing by roughly 30 million people per year. Each new entrant represents a first-time flyer choosing between a 14-hour mountain bus ride and a $35 flight.
The terrain decides. 17,000 islands in Indonesia. 7,640 in the Philippines. Mountain ranges bisecting Vietnam and Myanmar. There is no high-speed rail solution here. The A320neo is the interstate highway.
And it pays a brutal price for it.
Intra-ASEAN routes average 45 to 90 minutes. That means an A320 flying this corridor does eight cycles per day — eight pressurisation-depressurisation sequences on the fuselage. For context, a transatlantic widebody does one. The cumulative fatigue stress on a high-cycle airframe in 90% tropical humidity accelerates corrosion on skin panels and landing gear at rates that European maintenance manuals weren't written for.
Airlines operating here budget for 40% higher airframe maintenance costs than equivalent European short-haul operators. That cost is invisible in the $35 fare. It's the reason carriers collapse.
Tony Fernandes bought AirAsia in 2001 for one ringgit — roughly 26 cents. Today the group operates across five countries. It's the closest thing the region has to a continental network.
But Changi, Suvarnabhumi, Soekarno-Hatta, and NAIA all think they're the hub.
Six hundred eighty million people. Sixty airlines. No single winner.
Just turbulence.