Even if we do manage to secure flights to those 17 countries, there is no assurance the agreements will be as favourable as they are now. The US has reportedly offered a significantly inferior deal.
The key plank of the no-deal disaster, however, arises not from bilateral permissions but safety certificates.
The European Commission has confirmed that, in the event of no deal, the certificates granted by the UK's Civil Aviation Authority to pilots, engineers and cabin crew would no longer be considered valid.
UK-certified firms wouldn't even be able to continue supplying parts for EU planes.
The government frankly admits, for example, that the UK would be out of the Single European Sky, which harmonises air navigation, and that UK airlines would no longer be able to fly between two EU airports.
if we don't manage to re-join the Interbus agreement and the EU doesn't recognise the UK's permits, all coach services could be suspended too.