The month in summary
During August 2026, we logged 105 cancelled flights at London Heathrow Airport (LHR): 59 departures and 46 arrivals. The airline most affected was British Airways with 64 cancellations. The route seeing the most disruption was New York John F. Kennedy (JFK). The single worst day was Thu 13 Aug with 28 cancellations.
Most affected airlines
Most affected routes
Worst days of the month
On-time performance
On-time performance based on 10 days of tracked data this month.
Was your flight cancelled?
If your flight departed from or arrived at a UK airport and was cancelled, you may be entitled to a refund or re-routing, and in some cases compensation under UK261 rules, particularly if you were given less than 14 days' notice and the cancellation was within the airline's control. Always check directly with your airline first.
Figures are compiled from live flight status data captured throughout each day. Coverage may vary and some cancellations could be missed; treat these numbers as an indicative guide, not an official record.