I urgently need to find a sleeping bag with a compression pack bag?

Buy when you arrive . . . wherever you are flying. You are planning too late. I would recommend the Marmot 0 degree down bag, $300. If you are only worried about getting a sleeping bag that fits inside of your backpack, rather than one that meets your needs, then you are dead already. I use those compression straps and caribiners to attach gear to the outside of my backpack and have been through airports several times without any problems. The ticket counter throws the whole mess inside a big plastic bag and everything works-out very well.