When the Avios scheme was launched in late 2011, avios.com brought in a range of new airline partners alongside BA, Iberia and American Airlines.
As per this page, it is a little known fact that you can redeem Avios on Air Malta, Flybe, Aurigny and Monarch.
The first thing to note is that these redemptions are with avios.com, not British Airways Executive Club. You need to open an avios.com account and use the ‘Combine My Avios’ function to move Avios from BAEC into avios.com. There is no charge to move your Avios and you can reverse the transaction if required.
Aurigny is a small airline based in the Channel Islands.
They fly to various Channel Islands destinations from Gatwick, Bristol, Southampton, East Midlands, Stansted and Manchester. You can see a full list of routes by visiting their website and clicking on ‘Timetable’.
On September 8th, Aurigny is launching a twice-daily service from London City Airport to Guernsey. The timings are good for a short break with outbound flights from City at 9.15am or an after-work 6.45pm.
The service will initially be run using a specially leased Fokker 50 aircraft whilst Aurigny sources an additional permanent aircraft for its fleet.
At the moment I cannot see any Avios redemption availability on this route. It is still early days, though, with services not due to start for another month and the service having only just gone on sale. It is one to keep an eye on. Given that British Airways does not fly to Guernsey it would be a valuable addition to the Gatwick and Southampton Aurigny services.
(EDIT: A comment below says that Aurigny is now only allowing Avios redemptions on flights under £70. If correct, it is unlikely that redemption seats will appear for the London City route.)