A Washington, D.C.-based research group, The International Council on Clean Transportation (ICCT), published on Wednesday a study that ranks 15 U.S.-based airlines on the fuel-efficiency of their operations in 2010. The research methodology took into account the fact that airplanes burn fuel to provide both mobility (moving passengers over a distance) and access (servicing multiple cities with multiple flights).
Based on the ICCT research, here are 2010’s top five airlines in fuel efficiency:
- Alaska Air Group Inc. (NYSE: ALK) — 1.11
- Spirit Airlines Inc. (NASDAQ: SAVE) — 1.09
- Hawaiian Holdings Inc. (NASDAQ: HA) — 1.09
- Continental Airlines — 1.07
- Southwest Airlines Co. (NYSE: LUV) — 1.06
A score of 1.0 reflects the industry average. United Airlines, now merged with Continental as United Continental Holdings Inc (NYSE: UAL), scored 1.0 in the ICCT rankings.
Here are the scores for the five least efficient carriers:
- Allegiant Travel Co. (NASDAQ: ALGT) — 0.88
- American Airlines — 0.89
- AirTran Airways — 0.94
- Delta Air Lines Co. (NYSE: DAL) — 0.96
- Sun Country Airlines — 0.97
Here are a few of the ICCT’s observations:
- Alaska, Spirit, and Hawaiian are “relatively small carriers serving geographically limited markets.”
- Continental was the most fuel efficient of the legacy (those established before deregulation).
- Many of the worst performers were or were subsequently involved in mergers.
- The most profitable airlines during the period 2009 to 2011, Allegiant , was the least efficient.
Globally aviation greenhouse gas emissions are expected to increase by 4% annually through 2050. If that estimate comes true, aviation will account for 15% of man-made CO2 emissions by that year.
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