CWL to DUB flight delays
467 flights · March 2025 – August 2026 · UK Civil Aviation Authority
76.02%
Arrived on time
Within 15 minutes of schedule
0%
Cancelled
Share of scheduled flights
—
When late, late by
Average across delayed arrivals
13 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 27.2 points more punctual than in June — 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.
Only Ryanair flies this route in the published record, so there is no choice to weigh — the route's figures and the airline's are the same figures.
This is a thin route — 467 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.
The Cardiff to Dublin route sits close to the middle of the record — neither notably punctual nor notably late.
Which airline should you fly on this route?
Over March 2025 – August 2026, Ryanair arrived on time most often on CWL to DUB. Flights ran closest to schedule in February and worst in October.
Every airline on CWL to DUB
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 |
|---|---|---|---|---|---|
| Ryanair | 444 | 75.45% | 0% | — | C |
| Aer Lingus | 22 | 86.36% | 0% | — | — |
| British Airways | 1 | 100% | 0% | — | — |
Month by month
Share of flights that arrived within 15 minutes of schedule, by month flown.
The return leg
DUB to CWL Dublin back to Cardiff 77.54% on time COther routes from Cardiff
Common questions
Are flights from Cardiff to Dublin usually delayed?
76.02% of flights on the CWL to DUB route arrived within 15 minutes of schedule, so roughly 2 in every ten arrived late. That is about the same as the average route in this record.
Which airlines fly from Cardiff to Dublin?
Only Ryanair appears in the published record on this route, with 444 flights and 75.45% arriving on time.
How often are CWL to DUB flights cancelled?
0% of scheduled flights did not operate — about 1 in every thousand. That is in the normal range.
What is the best month to fly Cardiff to Dublin?
June, when 88.5% of flights arrived on time. The worst was June at 61.3%.
What these figures do and do not tell you
Everything on this page is counted from the flights that actually operated on CWL to DUB during March 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 →