I seem to recall posts in the not too distant past on this forum about whole flurries of Delta schedule changes occuring at regular intervals during the year. Is this actually the case, or do schedule changes now happen continuously? If there are regular rounds of changes, about when do they occur? The reason I ask is that I have some award flights scheduled with my remaining SkyMiles in late April, and due to SkyTeam limitations, I will have to buy separate tickets to get to where I really want to go at both ends of the SkyTeam segments. FWIW, the SkyTeam portions involve HNL-SEA and SEA-LHR. Thanks for any info, even if speculative. I would hate to buy those tickets only to have to pay to change them.