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London to Philadelphia
The following tables show a breakdown of airline punctuality for scheduled flights between six London airports and Philadelphia 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                             6.75 87.13 1.20 0.00 334
2 Delta Air Lines                             11.49 81.18 3.53 1.18 85
3 American Airlines                             17.35 77.49 3.66 1.05 191
  ROUTE AVERAGE 10.73 83.28 2.30 0.49 610

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 British Airways         11.31 78.83 3.02 0.28 1,422
2 American Airlines         13.59 77.63 5.01 0.98 818
3 Delta Air Lines         13.73 80.82 5.15 1.60 563
  ROUTE AVERAGE 12.46 78.88 4.03 0.75 2,803

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               10.78 88.61 3.19 0.91 439
2 British Airways         15.82 78.64 4.55 1.15 1,386
3 American Airlines / US Airways         19.26 74.58 8.47 1.78 1,239
  ROUTE AVERAGE 16.49 78.43 5.94 1.37 3,064

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 British Airways         13.85 77.71 4.29 0.93 1,400
2 US Airways         19.38 72.85 8.86 1.80 722
  ROUTE AVERAGE 15.73 76.06 5.84 1.23 2,122

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 British Airways         16.34 76.29 6.57 1.11 1,354
2 US Airways         16.52 73.27 7.89 0.83 722
  ROUTE AVERAGE 16.40 75.24 7.03 1.01 2,076

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 US Airways         14.98 76.38 6.35 1.38 724
2 British Airways         15.55 75.41 4.16 0.57 1,395
  ROUTE AVERAGE 15.36 75.74 4.91 0.85 2,119

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 British Airways         13.82 80.61 3.95 0.99 1,418
2 US Airways         19.52 74.19 8.70 2.24 713
  ROUTE AVERAGE 15.73 78.46 5.54 1.41 2,131

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 British Airways         16.69 68.43 6.13 0.68 1,321
2 US Airways         22.24 71.04 10.27 2.28 701
  ROUTE AVERAGE 18.62 69.34 7.57 1.24 2,022

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         14.27 74.96 3.71 0.64 1,402
2 US Airways *       15.99 77.40 6.80 1.56 1,221
  AVERAGE BOTH AIRLINES > > > 15.07 76.10 5.15 1.07 2,623
* - US Airways discontinued LGW-PHL during October 2009


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         18.70 61.06 5.60 0.91 1,428
2 US Airways ^       19.08 69.77 7.50 2.05 1,267
  AVERAGE BOTH AIRLINES > > > 18.88 65.16 6.49 1.45 2,695
^ - US Airways commenced LHR-PHL 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         27.23 51.70 9.78 0.97 1,441
2 US Airways         28.62 53.82 13.07 2.09 719
  AVERAGE BOTH AIRLINES > > > 27.69 52.41 10.88 1.34 2,160
 


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 US Airways         21.16 60.56 7.89 1.13 710
2 British Airways         23.50 62.50 6.67 0.97 1,440
  AVERAGE BOTH AIRLINES > > > 22.72 61.86 7.07 1.02 2,150
 


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         15.66 71.01 4.27 0.42 1,428
2 US Airways         29.21 48.96 13.07 1.39 719
  AVERAGE BOTH AIRLINES > > > 20.20 63.62 7.22 0.75 2,147
 


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 British Airways         14.53 71.75 4.90 0.48 1,448
2 US Airways         25.08 53.56 9.73 0.96 730
  AVERAGE BOTH AIRLINES > > > 18.06 65.66 6.52 0.64 2,178
 

 
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