How often are flights between London and Phoenix on time?

65.2% of 1,141 flights were on time (within 15 minutes) over the last 12 months of UK Civil Aviation Authority figures, and 1.2% were cancelled.

Which airline is most punctual between London and Phoenix?

American Airlines, with 69% on time. British Airways was the least punctual at 63%.

LHR to PHX

London to Phoenix flights

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

Flights from London Heathrow (LHR) to Phoenix Sky Harbor (PHX) cover 8,463 km. 1,141 flights flew between them in the last 12 months of UK Civil Aviation Authority figures; 65% were on time across 2 airlines.

1,141

flights, August 2025 to July 2026

65%

on time (within 15 min)

1.2%

cancelled

+27 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
British Airways	725	63%	0.7%	24 min
American Airlines	416	69%	2.2%	32 min

Month by month

Over the last 12 months, London and Phoenix ran best in April 2026 (79.7% on time) and worst in November 2025 (49.2%).

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	65%	1.6%	123
September 2025	61%	1.7%	118
October 2025	59%	0%	112
November 2025	49%	1.7%	59
December 2025	53%	0%	62
January 2026	66%	0%	62
February 2026	70%	3.7%	54
March 2026	79%	0%	68
April 2026	80%	3.4%	118
May 2026	64%	0.8%	123
June 2026	66%	0.8%	119
July 2026	65%	0.8%	123

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.

More about London Heathrow (LHR) and Phoenix Sky Harbor (PHX).

Questions and answers

How often are flights between London and Phoenix on time?: 65.2% of 1,141 flights were on time (within 15 minutes) over the last 12 months of UK Civil Aviation Authority figures, and 1.2% were cancelled.
Which airline is most punctual between London and Phoenix?: American Airlines, with 69% on time. British Airways was the least punctual at 63%.
What is the best month to fly between London and Phoenix?: Over the last 12 months, London and Phoenix ran best in April 2026 (79.7% on time) and worst in November 2025 (49.2%).

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