It's not, I learnt the hard way this morning with the family. Only applied for our QR code last night and only had the option of stating arrival date as 1st Aug, not thinking it would be an issue based on the instant delivery of the QR code when travelling to Spain last week - Refused travel with a heavily pregnant other half and six year old and no Avios availability on the flights to Chania tomorrow.

Now travelling via Athens tomorrow + £300 in the hole for the connections. Not ideal!

I've submitted another PLF form now as we're coming in on different flights, assume this won't cause another issue as the website does say to only submit one per family but doesn't give the option to amend travel plans should they change?