2 added 51 characters in body
source | link

In my case, i have no documents (visa) for the next destination (DUB, Ireland)

You do have the documents. DUB is your transit destination, and you have required documents for transit (i.e. passport, onward ticket and US visa for TWOV). Please note it is "have documents required for the next destination", not "have documents required to be admitted into the next destination country".  

so, I'd be charged? how much?

Ethiopian Airlines claim to help with this visa. There are no mentions of charges, and this thread further confirms there are no charges:

Upon arrival at Addis Ababa aiport, I was given a transit visa on the Ethiopian airline connecting flight counter and stamp on my hotel voucher (no fee required)

As a side note, the airline even provides the free hotel and transit for long layovers.

In my case, i have no documents (visa) for the next destination (DUB, Ireland)

You do have the documents. DUB is your transit destination, and you have required documents for transit. Please note it is "have documents required for the next destination", not "have documents required to be admitted into the next destination country".  

so, I'd be charged? how much?

Ethiopian Airlines claim to help with this visa. There are no mentions of charges, and this thread further confirms there are no charges:

Upon arrival at Addis Ababa aiport, I was given a transit visa on the Ethiopian airline connecting flight counter and stamp on my hotel voucher (no fee required)

As a side note, the airline even provides the free hotel and transit for long layovers.

In my case, i have no documents (visa) for the next destination (DUB, Ireland)

You do have the documents. DUB is your transit destination, and you have required documents for transit (i.e. passport, onward ticket and US visa for TWOV). Please note it is "have documents required for the next destination", not "have documents required to be admitted into the next destination country".

so, I'd be charged? how much?

Ethiopian Airlines claim to help with this visa. There are no mentions of charges, and this thread further confirms there are no charges:

Upon arrival at Addis Ababa aiport, I was given a transit visa on the Ethiopian airline connecting flight counter and stamp on my hotel voucher (no fee required)

As a side note, the airline even provides the free hotel and transit for long layovers.

1
source | link

In my case, i have no documents (visa) for the next destination (DUB, Ireland)

You do have the documents. DUB is your transit destination, and you have required documents for transit. Please note it is "have documents required for the next destination", not "have documents required to be admitted into the next destination country".

so, I'd be charged? how much?

Ethiopian Airlines claim to help with this visa. There are no mentions of charges, and this thread further confirms there are no charges:

Upon arrival at Addis Ababa aiport, I was given a transit visa on the Ethiopian airline connecting flight counter and stamp on my hotel voucher (no fee required)

As a side note, the airline even provides the free hotel and transit for long layovers.