What’s your EFC/SAI and can your parents afford it?
For instance if your efc is 13k and your mom can make it work up to 10k (possibly 7k) you’re good. If your mom makes "too much"ie your efc is above 10k then it’s another strategy.
Have you applied anywhere already?
It’d help us help if you could you answer the questions above ,this way we could help you find the most relevant colleges for you.
Also the cost of a plane ticket twice a year may not make the total cost of attendance higher than some colleges. Run the NPC on Davidson or Macalestee to compare with BU.
On the other hand some colleges will take that cost into account when providing a package though we’d need more details to know whether you’re competitive for these colleges.