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London to Houston
The following tables show a breakdown of airline punctuality for scheduled flights between six London airports and Houston 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
RankAirlineLHRLGWLCYSTNLTNSENJFMAMJJASOND
1United Airlines              11.2984.274.781.40356
2British Airways              15.7770.104.121.03291
 ROUTE AVERAGE13.3077.904.481.24647

Operating airportsOperating monthsAverage
delay
(mins)
Operated
within 15
mins (%)
Over
1 hour
late (%)
Over
3 hours
late (%)
Total
flights
analysed
RankAirlineLHRLGWLCYSTNLTNJFMAMJJASOND
1British Airways    12.3278.483.870.361,371
2United Airlines    13.8381.886.621.102,009
 ROUTE AVERAGE13.2280.505.500.803,380

Operating airportsOperating monthsAverage
delay
(mins)
Operated
within 15
mins (%)
Over
1 hour
late (%)
Over
3 hours
late (%)
Total
flights
analysed
RankAirlineLHRLGWLCYSTNLTNJFMAMJJASOND
1British Airways    15.2575.924.470.721,387
2United Airlines    17.7676.528.501.612,117
 ROUTE AVERAGE16.7776.286.911.263,504

Operating airportsOperating monthsAverage
delay
(mins)
Operated
within 15
mins (%)
Over
1 hour
late (%)
Over
3 hours
late (%)
Total
flights
analysed
RankAirlineLHRLGWLCYSTNLTNJFMAMJJASOND
1United Airlines    17.8073.908.831.532,096
2British Airways    20.3167.406.351.211,402
 ROUTE AVERAGE18.8171.307.831.403,498

Operating airportsOperating monthsAverage
delay
(mins)
Operated
within 15
mins (%)
Over
1 hour
late (%)
Over
3 hours
late (%)
Total
flights
analysed
RankAirlineLHRLGWLCYSTNLTNJFMAMJJASOND
1United Airlines    21.2168.559.972.211,946
2British Airways    27.6764.608.572.431,401
 ROUTE AVERAGE23.9166.909.382.303,347

Operating airportsOperating monthsAverage
delay
(mins)
Operated
within 15
mins (%)
Over
1 hour
late (%)
Over
3 hours
late (%)
Total
flights
analysed
RankAirlineLHRLGWLCYSTNLTNJFMAMJJASOND
1United / Continental    15.2170.585.560.421,421
2British Airways    18.3766.505.730.931,397
 ROUTE AVERAGE16.7868.565.640.672,818

Operating airportsOperating monthsAverage
delay
(mins)
Operated
within 15
mins (%)
Over
1 hour
late (%)
Over
3 hours
late (%)
Total
flights
analysed
RankAirlineLHRLGWLCYSTNLTNJFMAMJJASOND
1British Airways    13.2675.273.880.791,391
2Continental Airlines    14.0277.566.020.831,444
 ROUTE AVERAGE13.6576.444.970.812,835

Operating airportsOperating monthsAverage
delay
(mins)
Operated
within 15
mins (%)
Over
1 hour
late (%)
Over
3 hours
late (%)
Total
flights
analysed
RankAirlineLHRLGWLCYSTNLTNJFMAMJJASOND
1British Airways    21.2061.717.881.041,345
2Continental Airlines    26.7362.8311.513.001,399
 ROUTE AVERAGE24.0262.289.732.042,744

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         14.99 72.81 4.60 0.72 1,390
2 Continental Airlines         26.92 63.43 10.26 2.16 1,433
  AVERAGE BOTH AIRLINES > > > 21.05 68.05 7.47 1.45 2,823
 


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 British Airways *       16.82 65.77 5.56 0.72 1,528
2 Continental Airlines ^       18.42 72.53 7.56 1.30 1,853
  AVERAGE BOTH AIRLINES > > > 17.70 69.48 6.65 1.04 3,381
^ - Continental Airlines commenced LHR-HOU during March 2008, discontinued LGW-HOU during October 2008
* - British Airways discontinued LGW-HOU during March 2008


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 British Airways       18.56 69.25 5.85 0.82 2,068
2 Continental Airlines         19.96 65.68 9.03 0.69 1,451
  AVERAGE BOTH AIRLINES > > > 19.14 67.77 7.16 0.77 3,519
 

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 British Airways       18.20 71.00 5.62 0.88 2,045
2 Continental Airlines         19.24 63.23 6.77 0.69 1,447
  AVERAGE BOTH AIRLINES > > > 18.64 67.78 6.10 0.80 3,492
 

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 British Airways       13.64 75.93 4.51 0.62 1,928
2 Continental Airlines         18.66 66.97 6.35 0.70 1,432
  AVERAGE BOTH AIRLINES > > > 15.78 72.11 5.30 0.65 3,360
 

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 Continental Airlines         12.07 76.14 3.60 0.21 1,446
2 British Airways       13.67 77.80 4.94 0.51 1,761
  AVERAGE BOTH AIRLINES > > > 12.95 77.05 4.33 0.37 3,207
 

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 Continental Airlines         9.85 81.27 2.42 0.23 1,324
2 British Airways       11.48 79.47 3.72 0.25 1,588
  AVERAGE BOTH AIRLINES > > > 10.74 80.29 3.13 0.24 2,912
 

 
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