United Airlines, following its merger with Continental has emerged as the world's biggest airline measured by available seat kilometers (capacity).
The biggest movers in the overall World Top 50 list include Turkish Airlines, which jumped seven places to rank 15th globally, while Indonesian carrier Lion Air vaulted 8 places to enter the global Top 40 for the first time.
Jet Airways has slipped seven places to the 46th rank, while IndiGo has emerged as one of the fastest growing airlines in the list of biggest airlines of 2012 compiled by the Centre for Asia Pacific Aviation (CAPA).
Here's a look at the 25 biggest airlines based on deployed capacity...
United Airlines (Rank 1)
Capacity Dec 2012: 6.14 billion
Capacity Dec 2011: 3.67 billion
Percentage change: 67.3%
(United and Continental has been combined for 2012 but not 2011. Available seat kilometers/Capacity-- Representative sample week in December of each year )
Delta Air Lines (Rank 2)
Capacity Dec 2012: 5.64 billion
Capacity Dec 2011: 5.65 billion
Percentage change: -0.3%
...
Emirates (Rank 3)
Capacity Dec 2012: 4.99 billion
Capacity Dec 2011: 4.21 billion
Percentage change: 18.4%
...
American Airlines (Rank 4)
Capacity Dec 2012: 4.80 billion
Capacity Dec 2011: 4.74 billion
Percentage change: 1.3%
...
Southwest Airlines (Rank 5)
Capacity Dec 2012: 3.27 billion
Capacity Dec 2011: 3.05 billion
Percentage change: 7.3%
...
Lufthansa (Rank 6)
Capacity Dec 2012: 3.15 billion
Capacity Dec 2011: 3.23 billion
Percentage change: -2.3%
...
British Airways (Rank 7)
Capacity Dec 2012: 3.04 billion
Capacity Dec 2011: 2.96 billion
Percentage change: 2.7%
...
Air France (Rank 8)
Capacity Dec 2012: 2.82 billion
Capacity Dec 2011: 2.94 billion
Percentage change: -4.2%
...
China Southern (Rank 9)
Capacity Dec 2012: 2.59 billion
Capacity Dec 2011: 2.33 billion
Percentage change: 11%
...
Singapore Airlines (Rank 10)
Capacity Dec 2012: 2.37 billion
Capacity Dec 2011: 2.28 billion
Percentage change: 4.0%
...
Cathay Pacific (Rank 11)
Capacity Dec 2012: 2.31 billion
Capacity Dec 2011: 2.51 billion
Percentage change: -8.2%
...
Air China (Rank 12)
Capacity Dec 2012: 2.19 billion
Capacity Dec 2011: 1.97 billion
Percentage change: 11.0%
...
US Airways (Rank 13)
Capacity Dec 2012: 2.01 billion
Capacity Dec 2011: 2.14 billion
Percentage change: -6.1%
...
China Eastern (Rank 14)
Capacity Dec 2012: 1.98 billion
Capacity Dec 2011: 1.80 billion
Percentage change: 10.2%
...
Turkish Airlines (Rank 15)
Capacity Dec 2012: 1.91 billion
Capacity Dec 2011: 1.54 billion
Percentage change: 24.0%
...
Qantas Airways (Rank 16)
Capacity Dec 2012: 1.86 billion
Capacity Dec 2011: 1.96 billion
Percentage change: -5.3%
...
Qatar Airways (Rank 17)
Capacity Dec 2012: 1.79 billion
Capacity Dec 2011: 1.65 billion
Percentage change: 8.7%
...
KLM (Rank 18)
Capacity Dec 2012: 1.78 billion
Capacity Dec 2011: 1.74 billion
Percentage change: 2.4%
...
Korean Air Lines (Rank 19)
Capacity Dec 2012: 1.73 billion
Capacity Dec 2011: 1.69 billion
Percentage change: 2.1%
...
Thai Airways (Rank 20)
Capacity Dec 2012: 1.70 billion
Capacity Dec 2011: 1.60 billion
Percentage change: 6.3%
...
Air Canada (Rank 21)
Capacity Dec 2012: 1.67 billion
Capacity Dec 2011: 1.69 billion
Percentage change: -1.6%
...
All Nippon Airways (Rank 22)
Capacity Dec 2012: 1.54 billion
Capacity Dec 2011: 1.24 billion
Percentage change: 24.3%
...
TAM (Rank 23)
Capacity Dec 2012: 1.49 billion
Capacity Dec 2011: 1.48 billion
Percentage change: 0.7%
...
Ryanair (Rank 24)
Capacity Dec 2012: 1.47 billion
Capacity Dec 2011: 1.59 billion
Percentage change: -7.2%
...
Japan Airlines (Rank 25)
Capacity Dec 2012: 1.37 billion
Capacity Dec 2011: 1.39 billion
Percentage change: -1.2%