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London to Seoul
The following tables show a breakdown of airline punctuality for scheduled flights between the five London airports and Seoul 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
1British Airways       11.2483.764.381.09548
2Korean Air       14.1562.711.460.00547
3Asiana Airlines       21.9357.899.020.38532
 ROUTE AVERAGE15.7168.224.920.491,627

Operating airportsOperating monthsAverage
delay
(mins)
Operated
within 15
mins (%)
Over
1 hour
late (%)
Over
3 hours
late (%)
Total
flights
analysed
RankAirlineLHRLGWLCYSTNLTNJFMAMJJASOND
1Korean Air    5.7188.290.410.14726
2Asiana Airlines    16.7371.697.530.28717
3British Airways    17.0079.695.421.53719
 ROUTE AVERAGE13.1279.934.440.652,162

Operating airportsOperating monthsAverage
delay
(mins)
Operated
within 15
mins (%)
Over
1 hour
late (%)
Over
3 hours
late (%)
Total
flights
analysed
RankAirlineLHRLGWLCYSTNLTNJFMAMJJASOND
1Korean Air    6.6784.230.550.00723
2Asiana Airlines    11.7175.853.810.00708
3British Airways    21.7070.376.961.78675
 ROUTE AVERAGE13.1876.973.700.572,106

Operating airportsOperating monthsAverage
delay
(mins)
Operated
within 15
mins (%)
Over
1 hour
late (%)
Over
3 hours
late (%)
Total
flights
analysed
RankAirlineLHRLGWLCYSTNLTNJFMAMJJASOND
1Korean Air   12.4971.142.850.00738
2Asiana Airlines    15.7066.015.620.00712
3British Airways    23.1863.138.482.45613
 ROUTE AVERAGE16.7766.995.480.732,063

Operating airportsOperating monthsAverage
delay
(mins)
Operated
within 15
mins (%)
Over
1 hour
late (%)
Over
3 hours
late (%)
Total
flights
analysed
RankAirlineLHRLGWLCYSTNLTNJFMAMJJASOND
1Korean Air   18.1466.066.100.54934
2Asiana Airlines    20.7763.179.520.28714
3British Airways               30.9252.949.801.9651
 ROUTE AVERAGE19.6364.457.650.471,699

Operating airportsOperating monthsAverage
delay
(mins)
Operated
within 15
mins (%)
Over
1 hour
late (%)
Over
3 hours
late (%)
Total
flights
analysed
RankAirlineLHRLGWLCYSTNLTNJFMAMJJASOND
1Korean Air    13.3569.453.840.14730
2Asiana Airlines    17.6564.517.060.00510
 ROUTE AVERAGE15.1267.425.160.081,240

Operating airportsOperating monthsAverage
delay
(mins)
Operated
within 15
mins (%)
Over
1 hour
late (%)
Over
3 hours
late (%)
Total
flights
analysed
RankAirlineLHRLGWLCYSTNLTNJFMAMJJASOND
1Korean Air    14.2968.263.230.42712
2Asiana Airlines    17.0867.217.730.23427
 ROUTE AVERAGE15.3367.874.920.351,139

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 Korean Air         8.28 79.86 0.55 0.00 730
2 Asiana Airlines         9.40 79.86 4.08 0.00 417
  AVERAGE BOTH AIRLINES > > > 8.69 79.86 1.83 0.00 1,147
 


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 Korean Air         13.32 68.86 3.02 0.14 729
2 Asiana Airlines         17.31 65.33 6.13 0.71 424
  AVERAGE BOTH AIRLINES > > > 14.78 67.56 4.16 0.35 1,153
 


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 Korean Air         15.49 59.56 2.34 0.00 727
2 Asiana Airlines         21.12 59.86 10.80 0.00 426
  AVERAGE BOTH AIRLINES > > > 17.57 59.67 5.46 0.00 1,153
 


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 Korean Air         14.25 67.26 2.88 0.00 730
2 Asiana Airlines         22.98 55.47 9.16 0.76 393
  AVERAGE BOTH AIRLINES > > > 17.31 63.13 5.08 0.27 1,123
 


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 Korean Air         11.62 71.60 2.06 0.00 729
2 Asiana Airlines         15.57 66.24 4.78 0.00 314
  AVERAGE BOTH AIRLINES > > > 12.81 69.99 2.88 0.00 1,043
 


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 Korean Air         14.65 72.23 1.44 0.48 623
2 Asiana Airlines         15.37 69.97 4.20 0.60 333
  AVERAGE BOTH AIRLINES > > > 14.90 71.44 2.41 0.52 956
 

 
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