I did wonder when sitting in a 100 seat jet flying to a mine site would be deemed as undesireable
Of all the hundreds of thousands of people who have flown in internationally, or domestically since all this started, I can't recall one case where someone has tested positive due to exposure to a later confirmed positive case on an aircraft. Sure they contribute to spreading the virus, but they don't seem to be like cruise ships. Even airports with their exposure to the arriving (subsequently) positive cases, have not produced clusters of further virus positives.