Man, this thing is a bumpy ride, and really sensitive to the daily oil price fluctuations. (retirebeforedad.com)
Airlines are under pressure to reduce their carbon emissions, and are highly vulnerable to global oil price fluctuations. (scientificamerican.com)
Baumeister, C. and L. Kilian (2016): «Forty years of oil price fluctuations: Why the price of oil may still surprise us,» Journal of Economic Perspectives, 30, 139 - 160. (mpra.ub.uni-muenchen.de)