Did you ever hear of HAJJ? Once a year with approx 1 million passengers carried inbound within 6 weeks and then outbound again, for another 6 weeks. What kind of airlines operate these flights, actually a lot of flag carriers operate them, as well as "fly by night" airlines that only operate for 3 months a year and might actually manage to pay their employees salaries and expenses. These airlines have already started operating Hajj with the -400....
Mutt