CMN to LHR flight delays
254 flights · January 2025 – August 2026 · UK Civil Aviation Authority
52.99%
Arrived on time
Within 15 minutes of schedule
1.18%
Cancelled
Share of scheduled flights
—
When late, late by
Average across delayed arrivals
20 min
Delay per flight
Averaged over every flight flown
What the record says about this route
The season swings this route hard. In June it ran 40.6 points more punctual than in January — a difference bigger than the one between the best and worst airlines on most routes. If the date is flexible, it is worth more than the carrier.
Flights from Casablanca to London arrive late more often than they arrive on time. At this rate lateness is the normal outcome, not the exception, and the schedule is better read as an aspiration than a plan.
The route has been getting better. The later months in the record run 22.8 points more punctual than the earlier ones, which usually means a schedule that was too tight has been given more room.
The two directions do not behave alike. LHR to CMN arrives on time 13.9 points more often than the outbound. Delay accumulates through the flying day, so whichever direction is scheduled later tends to carry the worse record — which is an argument for booking the morning departure if the choice exists.
Which airline should you fly on this route?
Over January 2025 – August 2026, Royal Air Maroc arrived on time most often on CMN to LHR. Flights ran closest to schedule in June and worst in January.
Every airline on CMN to LHR
Ranked by how many flights each one operated. A carrier with fewer than 100 flights in the period is listed but not graded.
| Airline | Flights | On time | Cancelled | Avg delay | Grade |
|---|---|---|---|---|---|
| Royal Air Maroc | 254 | 52.99% | 1.18% | — | F |
Month by month
Share of flights that arrived within 15 minutes of schedule, by month flown.
The return leg
LHR to CMN London back to Casablanca 66.93% on time FOther routes from Casablanca
Common questions
Are flights from Casablanca to London usually delayed?
52.99% of flights on the CMN to LHR route arrived within 15 minutes of schedule, so roughly 5 in every ten arrived late. That is worse than the average route in this record.
Which airlines fly from Casablanca to London?
Only Royal Air Maroc appears in the published record on this route, with 254 flights and 52.99% arriving on time.
How often are CMN to LHR flights cancelled?
1.18% of scheduled flights did not operate — about 12 in every thousand. That is in the normal range.
What is the best month to fly Casablanca to London?
June, when 70.3% of flights arrived on time. The worst was January at 29.7%.
What these figures do and do not tell you
Everything on this page is counted from the flights that actually operated on CMN to LHR during January 2025 – August 2026, as reported by the airlines to the US Bureau of Transportation Statistics. "On time" is the federal definition: arriving at the gate within 15 minutes of the scheduled time.
A route's record is a description of the past, not a forecast. Weather, air traffic control and the aircraft's earlier flights that day drive most delays, and none of them are predictable from a historical rate. What the record does tell you is whether this route runs late more often than others, and which carrier on it has the better history — which is the part you can actually act on when you book.
Cancellations are counted separately from delays because they are a different problem for a traveller: a late flight still gets you there. How the grade is calculated →