any advice on best way to do this? Are their any taxis in Corozol that go right across to the bus station? Thanks

Last Feb. we rode from ADO to the border then from the border by taxi to BZE. Our driver with four of us on board made it to the airport in about 1 hr & 20 minutes. We had to clear customs about a half mile in. Get a taxi to the border, there are 10 or 15 taxis waiting on the other side.

I've seen Corozal taxis in Chetumal so I assume you can go to the ADO terminal by taxi. The fare from Corozal Town to the border is about BZ$25 (±$5) -- probably double that to the terminal.

If you get a taxi that won't go further than the border area, just get a Chetumal taxi from the border to the ADO terminal -- that fare should be about 70 pesos.