How often are flights between London and Keflavik on time?

78.5% of 1,202 flights were on time (within 15 minutes) over the last 12 months of UK Civil Aviation Authority figures, and 2% were cancelled.

Which airline is most punctual between London and Keflavik?

easyJet, with 80.4% on time. Icelandair was the least punctual at 78.3%.

LGW to KEF

London to Keflavik flights

Name: London to Keflavik (LGW-KEF) flights: on-time record
Creator: TripStow
License: https://tripstow.com/notices

Flights from London Gatwick (LGW) to Keflavik (KEF) cover 1,935 km. 1,202 flights flew between them in the last 12 months of UK Civil Aviation Authority figures; 78% were on time across 3 airlines.

1,202

flights, August 2025 to July 2026

78%

on time (within 15 min)

cancelled

+11 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
Icelandair	837	78%	2.6%	10 min
easyJet	322	80%	0.6%	15 min
Thomsonfly	42	67%	0%	24 min

Month by month

Over the last 12 months, London and Keflavik ran best in November 2025 (90% on time) and worst in August 2025 (59.2%).

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	59%	0%	98
September 2025	76%	2.9%	70
October 2025	72%	4.7%	86
November 2025	90%	0%	120
December 2025	74%	1.6%	129
January 2026	88%	1.6%	124
February 2026	85%	0%	128
March 2026	75%	7%	114
April 2026	86%	1.3%	78
May 2026	80%	6.2%	81
June 2026	84%	0%	86
July 2026	68%	0%	88

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 Keflavik on time?: 78.5% of 1,202 flights were on time (within 15 minutes) over the last 12 months of UK Civil Aviation Authority figures, and 2% were cancelled.
Which airline is most punctual between London and Keflavik?: easyJet, with 80.4% on time. Icelandair was the least punctual at 78.3%.
What is the best month to fly between London and Keflavik?: Over the last 12 months, London and Keflavik ran best in November 2025 (90% on time) and worst in August 2025 (59.2%).

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