NBO to LHR flight delays
445 flights · January 2025 – August 2026 · UK Civil Aviation Authority
74.72%
Arrived on time
Within 15 minutes of schedule
0.45%
Cancelled
Share of scheduled flights
—
When late, late by
Average across delayed arrivals
19 min
Delay per flight
Averaged over every flight flown
What the record says about this route
Which airline you fly changes the odds here. British Airways arrived on time 14.6 points more often than Kenya Airways over the same period on the same route — same airports, same weather, same air traffic control. A gap that survives all of that is about how the two airlines are run.
The season swings this route hard. In June it ran 23.8 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.
This is a thin route — 445 flights across the whole period. On a route this infrequent a cancellation is far more costly than the rate suggests, because the next departure may not be the same day.
Flights from Nairobi to London run late more often than the average route, though not severely.
Which airline should you fly on this route?
Over January 2025 – August 2026, British Airways arrived on time most often on NBO to LHR. Kenya Airways was late most often. Flights ran closest to schedule in June and worst in January.
Every airline on NBO 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 |
|---|---|---|---|---|---|
| British Airways | 235 | 81.62% | 0.43% | — | B |
| Kenya Airways | 210 | 66.99% | 0.48% | — | D |
Month by month
Share of flights that arrived within 15 minutes of schedule, by month flown.
The return leg
LHR to NBO London back to Nairobi 70.14% on time DCommon questions
Are flights from Nairobi to London usually delayed?
74.72% of flights on the NBO to LHR route arrived within 15 minutes of schedule, so roughly 3 in every ten arrived late. That is about the same as the average route in this record.
Which airline is most on time from Nairobi to London?
British Airways, at 81.62% on time across 235 flights. The least punctual on the route was Kenya Airways at 66.99%.
How often are NBO to LHR flights cancelled?
0.45% of scheduled flights did not operate — about 5 in every thousand. That is in the normal range.
What is the best month to fly Nairobi to London?
June, when 88.3% of flights arrived on time. The worst was January at 64.5%.
What these figures do and do not tell you
Everything on this page is counted from the flights that actually operated on NBO 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 →