no bonafide company makes you pay for your way to the interview, forget traveling to the interview, if you had to pay a dime it is a scam.

The interview will probably last 10 minutes not worth it. Drove cross state fod a 10 minute interview.

I'd decline that offer. That's pretty abusive and ignorant thought process on their part to contact someone in another country, ask for an interview, decline it being a video call, and expect the person to spend the amount of money it costs to travel that distance just for an interview. That's not very clear thinking on their part. It's pretty selfish of them.

I wouldn't .........................

I see red flags ! I wouldn't fly overseas for an interview at my own expense.

I wouldn't.

You'll only regret it if you don't do it.

I wouldn't think highly of a well known organization that wants you to travel at your own expense for an interview.  Most companies will pay, or will work out something such as skype interviews or meeting with one of their folks in your own country.  In fact, I'd be suspicious of them.  

The fact you're asking the question to 100% strangers instead of being able to decide on your own is a big sign you aren't ready for any job who would ask you to travel for an interview much less travel overseas in general.

We have no idea of the job, the salary and Country. So I doubt anyone could say yes or no.

UK

Update, you should have said teaching in the U.K. we are short of Teachers here, no wonder they can't afford your fare and are looking overseas.