UA7 IAH-NRT 789 cancelled due to maintenance after a 8 hour delay. Return UA6 NRT-IAH on 10/27 cancelled as a result.
UA229 DUB-IAD 752 cancelled due to maintenance.
UA855 LIM-IAH 763 cancelled due to crew time out after a 2 hr 48 min delay. Flight will continue to IAH as UA3031.