01/04/2013 12:50 EST | Updated 01/23/2014 06:58 EST

United Airlines Ranked As World's Biggest Airline Of 2012

A United Airlines 787 Dreamliner arrives at O'Hare international Airport in Chicago, Sunday, Nov. 4, 2012, from Houston, after making United's inaugural 787 revenue flight. The aircraft is touted to be much more fuel efficient than any other similar plane and has a host of passenger amenities, such as larger windows, special lighting and filtered air. (AP Photo/Nam Y. Huh)

It's said that everything's bigger in Texas, so it's no surprise that the biggest airline in the world flies in and out of not one, not two, but three airports located in the state.

According to the Centre for Aviation, a group that monitors all things related to planes and flying, United Airlines is the world's largest carrier for 2012. The airline dethroned Delta Airlines, 2011's largest airline, after it bumped up its carrying capacity by roughly 67 per cent from 2011 to 2012. It helped, of course that United merged with Continental Airlines back in 2010, according to the Associated Press. It wasn't until March of 2012, however, that United finally dissolved all businesses into one group.

Meanwhile, Delta dropped to second place in 2012 after recording 0.3 per cent fewer available seats per kilometre (ASK) — the standard measurement for measuring carrying capacity. ASKs are calculated by taking the number of free seats on a flight and multiplying by the kilometres or miles of the trip within a week, and are considered a key measurement in the aviation industry. Add in the fact that several airlines travel to just about every country in the world (we're looking at you, British Airways) or make 15-hour flights spanning 12,000 km (hi there, Emirates) and carriers' ASKs can work their way into the billions.

So what does this mean for travellers? Well, for those with a stake in the airline industry, 2012's numbers have the current third-place Emirates poised to soar into second place by next year, according to the Daily Telegraph. For the average traveller, it's a safe bet to start expecting United Airlines to brand themselves as "the largest airline in the world."

When it came to Canadian airlines, Canada's only representative didn't even crack the top 10 ranking. According to the Centre, Air Canada dropped three spots from 18 in 2011 to 21 in 2012. To see the rest of the world's biggest airlines — and more importantly, where they'll fly to — check out the gallery below.

World's Biggest Airlines Of 2012

Photo gallery The Biggest Airlines Of 2012 See Gallery

10. Singapore Airlines

2,375,715,435 available seats per kilometre per week

Where does Singapore Airlines fly to?

9. China Southern

2,596,677,741 available seats per kilometre per week

Where does China Southern fly to?

8. Air France

2,825,526,843 available seats per kilometre per week

Where does Air France fly to?

7. British Airways

3,049,528,888 available seats per kilometre per week

Where do they fly to?

6. Lufthansa

3,158,824,795 available seats per kilometre per week

Where does Lufthansa fly to?

5. Southwest Airlines

3,276,525,770 available seats per kilometre per week

Where does Southwest Airlines fly to?

4. American Airlines

4,800,884,481 available seats per kilometre per week

Where does American Airlines fly to?

3. Emirates

4,992,911,535 available seats per kilometre per week

Where does Emirates fly to?

2. Delta Air Lines

5,643,676,049 available seats per kilometre per week

Where does Delta Air Lines fly to?

1. United Airlines

Where does United Airlines fly to?