Table 1.

Online questionnaire structure.

Topic	Items	Description
A. Recent air travel behaviour	2	Number of return flights taken in 2019 (before COVID-19) Number of return flights taken since March 2020 (after the emergence of COVID-19)
B. Future air travel plans and planned return to travel	4	Current plans to fly in the next 6 months Factors that would influence a decision not to fly in the next 6 months Anticipated wait until returning to normal travel patterns after the pandemic is over Anticipated level of travel once the pandemic is over in comparison with before the pandemic
C. Assessment of passenger confidence	5	Anticipated levels of concern about carrying out certain activities onboard the aircraft Interventions that would increase confidence to fly if implemented Attitudinal statements relating to various aspects of confidence in flying and the air passenger journey
D. Socio-demographic factors	6	Gender and Age Education Level Household income Nationality, Municipality
Other comments	1	Any other comments relating to aspects of the survey