How often are flights between London and Sofia on time?

81.6% of 828 flights were on time (within 15 minutes) over the last 12 months of UK Civil Aviation Authority figures, and 0.2% were cancelled.

Which airline is most punctual between London and Sofia?

British Airways, with 82.8% on time. Bulgaria Air was the least punctual at 80.6%.

LHR to SOF

London to Sofia flights

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

Flights from London Heathrow (LHR) to Sofia (SOF) cover 2,041 km. 828 flights flew between them in the last 12 months of UK Civil Aviation Authority figures; 82% were on time across 2 airlines.

828

flights, August 2025 to July 2026

82%

on time (within 15 min)

0.2%

cancelled

+8 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
Bulgaria Air	432	81%	0%	8 min
British Airways	396	83%	0.5%	8 min

Month by month

Over the last 12 months, London and Sofia ran best in November 2025 (93.5% on time) and worst in September 2025 (51.5%).

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	76%	0%	82
September 2025	51%	0%	68
October 2025	78%	0%	58
November 2025	94%	0%	62
December 2025	91%	0%	70
January 2026	80%	0%	64
February 2026	80%	0%	60
March 2026	91%	0%	68
April 2026	83%	0%	72
May 2026	93%	2.6%	76
June 2026	84%	0%	68
July 2026	79%	0%	80

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 Sofia on time?: 81.6% of 828 flights were on time (within 15 minutes) over the last 12 months of UK Civil Aviation Authority figures, and 0.2% were cancelled.
Which airline is most punctual between London and Sofia?: British Airways, with 82.8% on time. Bulgaria Air was the least punctual at 80.6%.
What is the best month to fly between London and Sofia?: Over the last 12 months, London and Sofia ran best in November 2025 (93.5% on time) and worst in September 2025 (51.5%).

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