Hi, all -

I'm flying CTU-PEK-IAD (Air China, connecting to UA) and wondered whether just under two hours is sufficient for the domestic to international connection in PEK? Want to leave CTU as late as possible so I have some time in the morning to see the sights in Chengdu. Looks like Air China flight from CTU arrives PEK at 1640 and the United flight to IAD departs at 1825.

Thanks,
Tim