As long as the delay to your flight does not compromise the required testing window for your destination, your certificate should still be valid. For example, flying to Singapore requires a negative certificate within 72 hours of your departure, but if your flight is delayed by half a day, your certificate may still be valid. 


Regulations and restrictions are changing rapidly, so please check your destination government website for the latest up-to-date requirements. It is the sole responsibility of passengers to clarify in good time the testing requirements needed for their destination. 


IATA Travel Centre:

https://www.iatatravelcentre.com/world.php


Hong Kong 

Hong Kong Government Travel Health Service:

https://www.travelhealth.gov.hk/english/index.html


Outbound Travel Alerts:

https://www.sb.gov.hk/eng/ota/


Indonesia

Department of Foreign Affairs Travel Advice:

https://www.dfa.ie/travel/travel-advice/a-z-list-of-countries/indonesia/


Malaysia

Ministry of Foreign Affairs Travel Advisory:

https://www.kln.gov.my/web/guest/travel-advisory


Singapore

Singapore Government Travel Advice:

https://safetravel.ica.gov.sg/


UK

UK Government Foreign Travel Advice:

https://www.gov.uk/foreign-travel-advice