IATA says of the 1.2 billion airline passengers since the beginning of 2020 just 44 have been confirmed as being infected w Covid on board. That is a 1 in 27 million chance of getting infected by taking a flight. It is IATA but assume they aren't fabulating
— Denis MacShane (@DenisMacShane) October 9, 2020
That’s about what I’d expect. Commercial aircraft (I hope for obvious reasons) have extremely good air filtration systems, there isn’t much talking, and mask wearing is enforced.
Most people have a far greater chance of being infected at home than in an aircraft. In the airport, depending on which one and what time of day, it might be a bit worse (but not by much).
Good news, because hiding in terror at home is not a real answer to anything.