| Letter | Rank | Passangers | Code | City | % Correct |
|---|---|---|---|---|---|
| A | 1 | 103,902,992 | ATL | Atlanta | 99%
|
| J | 22 | 59,392,500 | JFK | New York | 99%
|
| L | 4 | 84,557,968 | LAX | Los Angeles | 97%
|
| M | 25 | 53,386,075 | MAD | Madrid | 97%
|
| S | 18 | 62,219,573 | SIN | Singapore | 94%
|
| I | 15 | 63,859,785 | IST | Istanbul | 93%
|
| Z | 71 | 29,396,094 | ZRH | Zurich | 91%
|
| B | 21 | 60,860,557 | BKK | Bangkok | 90%
|
| F | 14 | 64,500,386 | FRA | Frankfurt | 90%
|
| V | 89 | 24,392,805 | VIE | Vienna | 88%
|
| P | 2 | 95,786,442 | PEK | Beijing | 87%
|
| C | 10 | 69,471,442 | CDG | Paris | 87%
|
| O | 5 | 79,828,183 | ORD | Chicago | 81%
|
| D | 3 | 88,242,099 | DXB | Dubai | 81%
|
| T | 35 | 44,878,703 | TPE | Taipei | 78%
|
| W | 100 | 23,129,400 | WUH | Wuhan | 76%
|
| N | 49 | 40,631,193 | NRT | Tokyo | 70%
|
| Y | 30 | 47,054,696 | YYZ | Toronto | 64%
|
| K | 23 | 58,558,440 | KUL | Kuala Lumpur | 52%
|
| E | 43 | 43,393,499 | EWR | Newark | 51%
|
| X | 46 | 41,857,406 | XIY | Xi'an | 49%
|
| G | 53 | 37,774,000 | GRU | São Paulo | 48%
|
| R | 85 | 25,038,000 | RUH | Riyadh | 28%
|
| H | 58 | 35,570,411 | HGH | Hangzhou | 24%
|
| U | 114 | 21,500,901 | URC | Urumqi | 21%
|