Over the past year or so, I've searched unsuccessfully for award flights from Seattle to Bonaire. Any day, any flight. No luck. This year I've booked using AA to Curacao and then pay for the hopper to Bonaire.
Today I checked just for S&G and Alaska was showing some availability in Coach and Business for several flights and dates via Delta. If you're a scuba diver, could be good news. I hope it continues in the future.