QRO moves fast on quiet days, but US-bound morning banks and holiday weekends still clog check-in and immigration.

Worst crush is 05:30–08:00 for US departures and Sunday evenings; midday midweek is often empty.

Everything is in a single building; once through security the airside options shrink fast.

Do coffee, full meals, and last ATM/cash needs before the checkpoint; airside is mostly small kiosks and the lounge.

Decent sit-down and café options sit before security; post-security food is limited and pricier.

If you have a long US connection, grab a real meal landside — airside choices won’t carry a 3-hour wait.

QRO has no US Customs preclearance — you clear immigration on arrival in the States.

Build connection time at your US hub accordingly; don’t assume a tight DFW/IAH turn will be painless.