COVID-19 and infectious diseases
To reduce the potential risk of passing on infections to others on board an aircraft, you should delay travel if you are feeling unwell, especially if you have a fever or have tested positive for COVID-19. An airline can deny boarding of any passenger who looks unwell, especially if they suspect the passenger might be infectious.
If you have recently recovered from an infectious disease, but are still showing physical signs of being unwell (e.g. crusted spots following chicken pox), you may need to carry a letter from a GP confirming that you are no longer infectious.
If you are unsure if you are okay to travel, Please speak with your GP and they will let you know if you are fit to fly.