One thing I picked up on my trip to ITB in Berlin this week was a discount code for BMI Regional.
Discount code captain will get you 10% off your next flight.
It is valid for bookings by, and travel until, 31st December 2018. Codeshare flights are excluded. The discount only seems to apply to the base fare.
You still get complimentary drinks, snacks and checked baggage with BMI Regional too.