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| | Glasgow Airport | All UK Airports * |
| Jan-Dec 2011 | Jan-Dec 2010 | Jan-Dec 2011 |
| Average delay (mins) | 9.56 | 13.71 | 11.01 |
| Within 15 mins (%) | 84.43 | 79.01 | 80.49 |
| Over 1 hour late (%) | 3.62 | 5.69 | 3.55 |
| Over 3 hours late (%) | 0.46 | 0.82 | 0.48 |
| Total flights analysed | 62,482 | 60,869 | 1,343,408 |
| | * - 10 UK Reporting Airports |
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Punctuality Statistics for the 15 largest scheduled airlines at Glasgow Airport (in terms of total flights during the period). (Jan-Dec 2011) |
| Operated during months | Average delay (mins) | Operated within 15 mins (%) | Over 1 hour late (%) | Over 3 hours late (%) | Total flights analysed | | Rank | Airline | J | F | M | A | M | J | J | A | S | O | N | D |
| 1 | bmi regional |  |  |  |  |  |  |  |  |  |  |  |  | 5.52 | 92.05 | 2.67 | 0.19 | 1,573 |
| 2 | KLM |  |  |  |  |  |  |  |  |  |  |  |  | 6.52 | 89.31 | 1.83 | 0.00 | 3,161 |
| 3 | easyJet |  |  |  |  |  |  |  |  |  |  |  |  | 7.48 | 86.73 | 2.68 | 0.29 | 14,565 |
| 4 | BA CityFlyer |  |  |  |  |  |  |  |  |  |  |  |  | 7.56 | 88.62 | 3.41 | 0.42 | 2,373 |
| 5 | bmibaby |  |  |  |  |  |  |  |  |  |  |  |  | 8.17 | 87.15 | 3.15 | 0.32 | 1,237 |
| 6 | Loganair |  |  |  |  |  |  |  |  |  |  |  |  | 8.80 | 87.20 | 4.05 | 0.58 | 8,997 |
| 7 | Aer Arann |  |  |  |  |  |  |  |  |  |  |  |  | 8.81 | 88.39 | 4.18 | 0.78 | 3,825 |
| 8 | flybe |  |  |  |  |  |  |  |  |  |  |  |  | 9.90 | 84.88 | 3.73 | 0.44 | 12,590 |
| 9 | bmi British Midland |  |  |  | | | | | | | | | | 9.99 | 80.58 | 3.08 | 0.00 | 1,040 |
| 10 | British Airways |  |  |  |  |  |  |  |  |  |  |  |  | 10.37 | 80.30 | 3.05 | 0.21 | 8,255 |
| 11 | Air Southwest |  |  |  |  |  |  |  | | | | | | 13.41 | 76.34 | 4.84 | 0.54 | 372 |
| 12 | Continental Airlines |  |  |  |  |  |  |  |  |  |  |  |  | 15.72 | 77.62 | 7.56 | 1.60 | 688 |
| 13 | Icelandair |  |  |  |  |  |  |  |  |  |  |  |  | 23.47 | 78.39 | 7.29 | 4.02 | 398 |
| 14 | Emirates |  |  |  |  |  |  |  |  |  |  |  |  | 24.30 | 48.28 | 8.39 | 0.55 | 727 |
| 15 | Jet2 | | |  |  |  |  |  |  |  |  |  |  | 25.40 | 57.71 | 10.02 | 1.59 | 1,317 |
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