How often are flights between London and Seoul on time?

67.6% of 1,691 flights were on time (within 15 minutes) over the last 12 months of UK Civil Aviation Authority figures, and 0.3% were cancelled.

Which airline is most punctual between London and Seoul?

Virgin Atlantic Airways, with 84.5% on time. Asiana Airlines was the least punctual at 56.9%.

LHR to ICN

London to Seoul flights

Name: London to Seoul (LHR-ICN) flights: on-time record
Creator: TripStow
License: https://tripstow.com/notices

Flights from London Heathrow (LHR) to Seoul (ICN) cover 8,861 km. 1,691 flights flew between them in the last 12 months of UK Civil Aviation Authority figures; 68% were on time across 3 airlines.

1,691

flights, August 2025 to July 2026

68%

on time (within 15 min)

0.3%

cancelled

+15 min

average delay

Both directions together. On time means within 15 minutes of schedule, counted over every scheduled flight to and from the UK airport, including cancelled ones (the CAA's definition).

Airlines on this route

Airline	Flights	On time	Cancelled	Average delay
Korean Air	731	73%	0%	12 min
Asiana Airlines	728	57%	0%	21 min
Virgin Atlantic Airways	232	84%	2.2%	8 min

Month by month

Over the last 12 months, London and Seoul ran best in November 2025 (83.3% on time) and worst in September 2025 (35.8%).

Share of flights on time, by month (UK Civil Aviation Authority). Green is the best month, orange the worst.

See the figures

Month	On time	Cancelled	Flights
August 2025	55%	0%	124
September 2025	36%	0%	120
October 2025	42%	0%	124
November 2025	83%	0%	120
December 2025	56%	0%	124
January 2026	56%	0%	124
February 2026	61%	0%	112
March 2026	77%	0%	129
April 2026	79%	0%	180
May 2026	83%	0%	186
June 2026	79%	1.2%	169
July 2026	80%	1.7%	179

Source: UK Civil Aviation Authority punctuality statistics, August 2025 to July 2026. Contains UK Civil Aviation Authority data. Figures describe the past and do not predict a future flight.

Questions and answers

How often are flights between London and Seoul on time?: 67.6% of 1,691 flights were on time (within 15 minutes) over the last 12 months of UK Civil Aviation Authority figures, and 0.3% were cancelled.
Which airline is most punctual between London and Seoul?: Virgin Atlantic Airways, with 84.5% on time. Asiana Airlines was the least punctual at 56.9%.
What is the best month to fly between London and Seoul?: Over the last 12 months, London and Seoul ran best in November 2025 (83.3% on time) and worst in September 2025 (35.8%).

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