Speak to your Travel Agent on Monday. If the flights cancelled more options are available to passengers. Sadly until that time, you just have to check the airport and airlines websites and get there on time for your flight. If you are delayed in getting to the airport (car, public transport) and the flight is not cancelled and operates, that's your fault, but you may be covered for "delay on getting to the airport" on your holiday insurance. Check the policy wording.