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This page can be accessed directly at flightontime.info/LondonBoston   Year Airline Avg. Delay 2011 to date American Airlines 9.56 mins 2010 American Airlines 13.65 mins 2009 British Airways 12.69 mins 2008 American Airlines 9.30 mins 2007 American Airlines 12.04 mins 2006 American Airlines 12.29 mins Choose another Key Route: Operating airports Operating months Average delay (mins) Operated within 15 mins (%) Over 1 hour late (%) Over 3 hours late (%) Total flights analysed Rank Airline LHR LGW LCY STN LTN J F M A M J J A S O N D 1 American Airlines 9.56 82.45 3.09 0.38 1,328 2 Delta Airlines 10.30 82.88 3.01 0.96 730 3 British Airways 12.82 77.28 4.26 0.62 1,620 4 Virgin Atlantic Airways 12.88 76.43 5.70 0.38 526   ROUTE AVERAGE 11.36 79.78 3.85 0.57 4,204 Operating airports Operating months Average delay (mins) Operated within 15 mins (%) Over 1 hour late (%) Over 3 hours late (%) Total flights analysed Rank Airline LHR LGW LCY STN LTN J F M A M J J A S O N D 1 American Airlines 13.65 73.44 4.20 0.60 1,668 2 British Airways 18.18 69.32 5.96 1.37 2,047 3 Virgin Atlantic Airways 25.93 68.39 10.20 3.16 696   ROUTE AVERAGE 17.69 70.73 5.96 1.36 4,411   Operating from London Airports Avg. Delay (mins) OTP Within 15 mins (%) 1 hr+ late (%) 3 hrs+ late (%) Total Flights Analysed Rank Airline LHR LGW LCY STN LTN 1 British Airways         12.69 79.54 3.60 0.71 2,111 2 American Airlines         13.34 78.54 5.37 0.94 1,491 3 Virgin Atlantic         13.86 78.61 7.08 1.53 720   AVERAGE ALL 3 AIRLINES > > > 13.11 79.04 4.79 0.93 4,322     Operating from London Airports Avg. Delay (mins) OTP Within 15 mins (%) 1 hr+ late (%) 3 hrs+ late (%) Total Flights Analysed Rank Airline LHR LGW LCY STN LTN 1 American Airlines         9.30 82.43 2.33 0.22 1,372 2 British Airways         15.63 68.99 4.08 0.76 2,106 3 Virgin Atlantic         26.91 66.94 11.81 3.75 720   AVERAGE ALL 3 AIRLINES > > > 15.50 73.03 4.84 1.10 4,198     Operating from London Airports Avg. Delay (mins) OTP Within 15 mins (%) 1 hr+ late (%) 3 hrs+ late (%) Total Flights Analysed Rank Airline LHR LGW LCY STN LTN 1 American Airlines         12.04 77.92 3.15 0.57 1,395 2 British Airways         18.57 61.73 5.83 0.71 2,127 3 Virgin Atlantic         24.89 63.91 8.82 2.07 726   AVERAGE ALL 3 AIRLINES > > > 17.51 67.42 5.46 0.89 4,248     Operating from London Airports Avg. Delay (mins) OTP Within 15 mins (%) 1 hr+ late (%) 3 hrs+ late (%) Total Flights Analysed Rank Airline LHR LGW LCY STN LTN 1 American Airlines         12.29 77.34 3.02 0.86 1,390 2 British Airways         18.60 65.79 6.97 0.83 2,166 3 Virgin Atlantic         19.59 66.67 7.05 1.38 723   AVERAGE ALL 3 AIRLINES > > > 16.72 69.69 5.70 0.93 4,279     Operating from London Airports Avg. Delay (mins) OTP Within 15 mins (%) 1 hr+ late (%) 3 hrs+ late (%) Total Flights Analysed Rank Airline LHR LGW LCY STN LTN 1 American Airlines         11.37 79.76 2.87 0.43 1,393 2 British Airways         16.36 73.47 4.62 0.61 2,141 3 Virgin Atlantic         18.23 70.54 5.39 1.66 723   AVERAGE ALL 3 AIRLINES > > > 15.04 75.03 4.18 0.73 4,257     Operating from London Airports Avg. Delay (mins) OTP Within 15 mins (%) 1 hr+ late (%) 3 hrs+ late (%) Total Flights Analysed Rank Airline LHR LGW LCY STN LTN 1 American Airlines         12.25 76.54 2.89 0.74 1,351 2 British Airways         14.03 76.18 3.76 0.43 2,074 3 Virgin Atlantic         21.62 61.34 7.20 1.44 833   AVERAGE ALL 3 AIRLINES > > > 14.95 73.39 4.16 0.73 4,258     Operating from London Airports Avg. Delay (mins) OTP Within 15 mins (%) 1 hr+ late (%) 3 hrs+ late (%) Total Flights Analysed Rank Airline LHR LGW LCY STN LTN 1 American Airlines         11.94 82.59 3.63 0.96 1,350 2 British Airways         15.67 77.37 5.15 1.10 2,099 3 Virgin Atlantic         22.11 68.85 9.64 2.23 716   AVERAGE ALL 3 AIRLINES > > > 15.57 77.60 5.43 1.25 4,165