Moderator: United Airlines
Join Date: Jun 2007
Location: SFO
Programs: UA Plat 1.995MM, Hyatt Discoverist, Marriott Plat/LT Gold, Hilton Silver, IHG Plat
Posts: 66,857
KA will likely not honor the UA elite bag waiver but is required to honor the standard bag allowance (which will vary based on the destination).
It is common for bags have to be rechecked for connections > 12 hours or overnight. It is worth trying to check thru but do not be surprised if denied.