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London to Boston
The following tables show a breakdown of airline punctuality for scheduled flights between six London airports and Boston for each year, and the year to date for which data is available.

All flights in both directions on the route are counted, by analysing the punctuality of both arrivals and depatures at the London airport(s).
 
  Most Punctual Airline on this Route
Year Airline Avg. Delay
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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 SEN J F M A M J J A S O N D
1 British Airways                             11.01 79.14 3.10 0.34 580
2 Virgin Atlantic Airways                             15.05 77.27 7.79 0.65 154
3 Delta Air Lines                             15.71 86.03 5.88 2.21 136
4 Norwegian Air Shuttle                             25.38 68.93 11.65 2.91 103
  ROUTE AVERAGE 13.83 78.73 5.14 0.92 973

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 Delta Air Lines         8.96 89.40 3.53 1.33 679
2 Virgin Atlantic Airways         13.49 79.32 4.39 0.85 706
3 British Airways         16.03 73.91 5.94 0.56 2,675
4 Norwegian Air Shuttle             25.33 59.46 7.81 1.50 333
  ROUTE AVERAGE 15.23 76.08 5.46 0.80 4,393

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 Delta Air Lines         10.14 89.02 4.75 1.63 674
2 Virgin Atlantic Airways         14.31 73.35 4.87 0.57 698
3 British Airways         14.65 78.07 4.80 0.78 2,563
  ROUTE AVERAGE 13.82 79.11 4.80 0.89 3,935

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 Delta Air Lines         7.83 88.27 2.20 0.73 682
2 Virgin Atlantic Airways         15.94 68.12 5.22 0.56 709
3 British Airways         16.36 73.63 6.84 0.86 2,662
  ROUTE AVERAGE 14.85 75.13 5.77 0.79 4,053

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 Delta Air Lines         11.75 85.19 4.51 1.27 709
2 Virgin Atlantic Airways         12.02 84.41 2.58 0.72 699
3 American Airlines                           12.12 77.98 7.14 0.60 168
4 British Airways         19.37 72.00 6.03 1.28 2,571
  ROUTE AVERAGE 16.54 76.59 5.23 1.16 4,147

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         11.20 81.00 3.81 0.62 1,626
2 Virgin Atlantic Airways         11.44 81.78 2.68 0.85 708
3 Delta Air Lines         11.88 82.57 4.14 1.43 700
4 British Airways         13.23 77.49 4.02 0.75 2,141
  ROUTE AVERAGE 12.16 79.86 3.79 0.81 5,175

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         9.07 83.65 3.05 0.29 1,706
2 Delta Air Lines             9.56 83.13 2.71 0.73 960
3 Virgin Atlantic Airways         10.54 79.94 4.24 0.28 708
4 British Airways         11.62 78.96 3.78 0.47 2,144
  ROUTE AVERAGE 10.34 81.26 3.43 0.43 5,518

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

2009
  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
 


2008
  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
 


2007
  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
 

2006
  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
 

2005
  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
 

2004
  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
 

2003
  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
 

 
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