Stakeholders in the travel industry have raised alarm over the astronomical increase in airfares charged by foreign airlines, which according to them have gone up by more than 150 per cent.

Besides, they alleged that the airlines are abusing and exploiting the present forex regime in the country.

The National Financial Secretary of the National Association of Nigeria Travel Agencies (NANTA), Mrs Ngozi Ngoka, who spoke on behalf of the stakeholders, cited the example of the airfare for the economy class for the Lagos-London route, which has allegedly increased from about N150, 000 to about N450, 000.
http://guardian.ng/business-services/stakeholders-worry-over-increasing-foreign-airfares/

What else do you expect?

More than 100 percent.
This is too much!
On a second thought,it could also be due to some factors beyond them.
It is only my herbal tea that has not increased since this dollar issue, and the potency has remained on the high side.