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London to Boston
The following tables show a breakdown of airline punctuality for scheduled flights between the five 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 airportsOperating monthsAverage
delay
(mins)
Operated
within 15
mins (%)
Over
1 hour
late (%)
Over
3 hours
late (%)
Total
flights
analysed
RankAirlineLHRLGWLCYSTNLTNJFMAMJJASOND
1Delta Air Lines    8.9689.403.531.33679
2Virgin Atlantic Airways    13.4979.324.390.85706
3British Airways    16.0373.915.940.562,675
4Norwegian Air Shuttle      25.3359.467.811.50333
 ROUTE AVERAGE15.2376.085.460.804,393

Operating airportsOperating monthsAverage
delay
(mins)
Operated
within 15
mins (%)
Over
1 hour
late (%)
Over
3 hours
late (%)
Total
flights
analysed
RankAirlineLHRLGWLCYSTNLTNJFMAMJJASOND
1Delta Air Lines    10.1489.024.751.63674
2Virgin Atlantic Airways    14.3173.354.870.57698
3British Airways    14.6578.074.800.782,563
 ROUTE AVERAGE13.8279.114.800.893,935

Operating airportsOperating monthsAverage
delay
(mins)
Operated
within 15
mins (%)
Over
1 hour
late (%)
Over
3 hours
late (%)
Total
flights
analysed
RankAirlineLHRLGWLCYSTNLTNJFMAMJJASOND
1Delta Air Lines    7.8388.272.200.73682
2Virgin Atlantic Airways    15.9468.125.220.56709
3British Airways    16.3673.636.840.862,662
 ROUTE AVERAGE14.8575.135.770.794,053

Operating airportsOperating monthsAverage
delay
(mins)
Operated
within 15
mins (%)
Over
1 hour
late (%)
Over
3 hours
late (%)
Total
flights
analysed
RankAirlineLHRLGWLCYSTNLTNJFMAMJJASOND
1Delta Air Lines    11.7585.194.511.27709
2Virgin Atlantic Airways    12.0284.412.580.72699
3American Airlines             12.1277.987.140.60168
4British Airways    19.3772.006.031.282,571
 ROUTE AVERAGE16.5476.595.231.164,147

Operating airportsOperating monthsAverage
delay
(mins)
Operated
within 15
mins (%)
Over
1 hour
late (%)
Over
3 hours
late (%)
Total
flights
analysed
RankAirlineLHRLGWLCYSTNLTNJFMAMJJASOND
1American Airlines    11.2081.003.810.621,626
2Virgin Atlantic Airways    11.4481.782.680.85708
3Delta Air Lines    11.8882.574.141.43700
4British Airways    13.2377.494.020.752,141
 ROUTE AVERAGE12.1679.863.790.815,175

Operating airportsOperating monthsAverage
delay
(mins)
Operated
within 15
mins (%)
Over
1 hour
late (%)
Over
3 hours
late (%)
Total
flights
analysed
RankAirlineLHRLGWLCYSTNLTNJFMAMJJASOND
1American Airlines    9.0783.653.050.291,706
2Delta Air Lines      9.5683.132.710.73960
3Virgin Atlantic Airways    10.5479.944.240.28708
4British Airways    11.6278.963.780.472,144
 ROUTE AVERAGE10.3481.263.430.435,518

Operating airportsOperating monthsAverage
delay
(mins)
Operated
within 15
mins (%)
Over
1 hour
late (%)
Over
3 hours
late (%)
Total
flights
analysed
RankAirlineLHRLGWLCYSTNLTNJFMAMJJASOND
1American Airlines    13.6573.444.200.601,668
2British Airways    18.1869.325.961.372,047
3Virgin Atlantic Airways    25.9368.3910.203.16696
 ROUTE AVERAGE17.6970.735.961.364,411

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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