+1 on this one. The risk of getting quarantined upon return, as I see it, is the main reason keeping most aspiring international travellers away from the airport. We saw a couple of such examples during the summer (think the UK air bridges which were axed on a short or no notice) and the publicity they received doesn't help the sector one bit. People cutting their holidays short and rushing to the airport in hopes of getting a vastly overpriced last-minute flight home just before D Day or people ending up on unpaid leave for 2 weeks after their annual leave are no good advertisement for travel. So, for most people the question is not whether they stand a higher risk of getting infected on a flight rather than in their local pub. The question is whether holidays (which are meant to be fun and relaxing rather than akin to Russian roulette) are worth this sort of hassle and risk.