Here is their information on the airstrip (including contact information):
Bahamas airport Abacos Island
For
commercial flight, more convenient than Marsh Harbour might be the Treasure Cay
airport which has a
ferry landing north of the Whale Cay
Passage, and has regular
ferry service to Green Turtle Cay. I've made crew changes there several times.
Marsh Harbour of course has direct flights to the states and offers
anchoring for all
weather conditions. It's a good place to provision, etc.
I think the choice between Treasure Cay and Marsh Harbour really depends on your time frame and itinerary. Marsh is probably cheaper, and as I said, a good place to provision and
anchor. If you enjoy the northern Islands, the Treasure Cay airport allows you to change crew without having to round the Whale Cay
passage. While, not as big as Marsh Harbour, Green Turtle Cay has several small grocery stores, and some
marine services.