SAN to MIA flight delays
San Diego, CA (SAN) Miami, FL (MIA) · 2,267 miles
618 flights · January 2025 – August 2026 · US Bureau of Transportation Statistics
84.38%
Arrived on time
Within 15 minutes of schedule
1.29%
Cancelled
Share of scheduled flights
144 min
When late, late by
Average across delayed arrivals
23 min
Delay per flight
Averaged over every flight flown
What the record says about this route
The season swings this route hard. In September it ran 32 points more punctual than in March — 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.
The shape of the lateness matters here. Flights on this route are not late often, but when they are late they are late by about 144 minutes — long enough to lose a connection or an evening. The on-time percentage looks reassuring and understates the consequence of being on the wrong flight.
The two directions do not behave alike. MIA to SAN arrives on time 8.4 points less 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.
This route does better than its own airport. Departures from SAN overall run 9.1 points less punctual than this particular one — so whatever congestion SAN has, this route is largely escaping it.
Which airline should you fly on this route?
Over January 2025 – August 2026, American Airlines arrived on time most often on SAN to MIA. Flights ran closest to schedule in April and worst in March.
Every airline on SAN to MIA
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 |
|---|---|---|---|---|---|
| American Airlines | 618 | 84.38% | 1.29% | 144 min | B |
Month by month
Share of flights that arrived within 15 minutes of schedule, by month flown.
The return leg
MIA to SAN Miami back to San Diego 75.95% on time COther routes from San Diego
Common questions
Are flights from San Diego to Miami usually delayed?
84.38% of flights on the SAN to MIA route arrived within 15 minutes of schedule, so roughly 2 in every ten arrived late. That is better than the average route in this record.
Which airlines fly from San Diego to Miami?
Only American Airlines appears in the published record on this route, with 618 flights and 84.38% arriving on time.
How often are SAN to MIA flights cancelled?
1.29% of scheduled flights did not operate — about 13 in every thousand. That is in the normal range.
What is the best month to fly San Diego to Miami?
September, when 93.3% of flights arrived on time. The worst was March at 61.3%.
When SAN to MIA flights are late, how late are they?
About 144 minutes on average across the flights that arrived more than 15 minutes behind schedule.
What these figures do and do not tell you
Everything on this page is counted from the flights that actually operated on SAN to MIA 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 →