As fuel costs continue to linger below historical averages, questions about airline fuel surcharges remain.
Here is a short summary of the issue as it currently stands.

The lower oil prices are the combined result of increased supply and lower global demand

The drop in oil is not all good news for airlines

The response to oil prices from airlines span a wide spectrum, with no global trend or correlation of oil cost to air fare changes—at least not in today’s industry:

1 http://www.bostonglobe.com/business/2015/01/06/what-happening-oil-prices/w9lU1qsPJnQaTInpr31TqJ/story.html
2http://oilprice.com/Energy/Crude-Oil/The-2014-Oil-Price-Crash-Explained.html
3http://www.reuters.com/article/2015/01/20/delta-air-lines-results-idUSL1N0UV2EH20150120
4http://www.reuters.com/article/2015/01/22/ual-hedges-idUSL1N0V11Z620150122
5http://www.telegraph.co.uk/travel/travelnews/11372031/Airlines-slash-fuel-surcharges-but-fares-could-still-go-up.html
6http://www.wsj.com/articles/did-the-airlines-actually-eliminate-fuel-surcharges-1425488470
7http://uk.reuters.com/article/2015/01/25/uk-emirates-airlines-oil-idUKKBN0KY0HM20150125
8http://www.ttgasia.com/article.php?article_id=24501
9http://aviationupdatesphilippines.blogspot.com/2015/01/civil-aeronautics-board-plans-removal-of-fuel-surcharge.html