Trying to book some flights for early April travel within China...

Went to ctrip and e-long to look for April 3 SHA-KWL flights.

FM9333 was there on Tuesday evening and it's not there today...

Same thing for Apr 4 KWL-HKG flights... China Southern 3031 was on ctrip and elong on Tuesday, but it's not showing up anymore (it does show up on Expedia)...

OU 4402 wasn't there on Monday, but now it's back (and cheap too!)?

Any insights?

(FM does not show up on Expedia)