When to Arrive at the Airport From McKinney

The standard advice — arrive two hours early, three for international — is calibrated for big hub airports with long security lines and a hike to the gate. It's not wrong, exactly, but it's not calibrated for either of the airports Collin County actually uses, and it's about to be actively wrong for the third.

For DFW or Love Field on a domestic flight, 90 minutes before departure is a comfortable buffer if you have TSA PreCheck, and 120 minutes if you don't. That's not the airline's generic guidance — it's the real number once you account for check-in, a security line that can run long at peak morning and Friday-evening hours, and the walk to your gate, which at DFW specifically can mean a terminal train ride you weren't planning on. International flights need closer to 2.5 hours, mostly because of longer document checks and the wider range of what can go wrong at check-in.

Traffic is the variable people underbudget most. US-380 and Central Expressway (US-75) both see real slowdowns during morning and evening rush hour, and either one can add 20 minutes or more to a drive that looks fine on a map at 10 a.m. If your flight boards during a weekday rush window, build the traffic buffer into your departure time, not just the airport buffer into your arrival time — those are two different problems.

Once commercial service launches at DTX, this math changes significantly for Avelo's 11 routes. A four-gate terminal with a short walk from curb to gate should eventually need less lead time than DFW. For the first few weeks, though, plan on the same 90 minutes: the checkpoint and staff are new, and Avelo starts boarding 45 minutes before departure and closes bag check at 40, so there's less slack than the terminal's size suggests. We'll publish real observed numbers once the airport has been open long enough to know what a typical Tuesday morning actually looks like.

One thing that won't change: get to the gate with time to spare rather than time to spend. A too-tight buffer that works nine times out of ten still means the tenth time you're sprinting through a terminal or rebooking a missed flight — and the cost of that tenth time is almost always higher than the minutes you saved on the other nine.