We just flew to and from Arizona with our 2. 5 year old and 3 month old. We did wipe down the arm rests, tray tables and wall (by window seat) before any of us touched them. We also washed everyone's hands frequently especially my 2. 5 year old's. I also always use a paper towel or napkin to open the bathroom door handles after I'd washed my hands (always do). I tried to keep my 2. 5 year old in the double stroller as much as possible in the airport so he didn't touch much. So far, we are all fine.