Route · MRY → SAN · 2020–2025 BTS data
Monterey to San Diego
According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), MRY to SAN (Monterey to San Diego) ranks #3772 of 4927 tracked domestic routes by total flights (most flights = #1).
Data updated 2026-06-13
- 82.9%
- On-time
- +3.9 pts
- vs US avg
- 67 min
- Delay when late
- 2,085
- Flights
- #3772 of 4927
- Corpus placement
Cancelled
1.8%
Best Month
May 2024 89%
Worst Month
Dec 2024 59%
Distance
375 mi
Carriers
2
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 36 | 9 | 1 | 0 | OO |
| Nov 2025 | 59 | 16 | 1 | 0 | OO |
| Oct 2025 | 62 | 12 | 2 | 0 | OO |
| Sep 2025 | 60 | 11 | 2 | 0 | OO |
| Aug 2025 | 62 | 17 | 0 | 0 | OO |
| Jul 2025 | 61 | 10 | 3 | 1 | OO |
| Jun 2025 | 60 | 9 | 2 | 0 | OO |
| May 2025 | 62 | 9 | 1 | 0 | OO |
| Apr 2025 | 60 | 13 | 1 | 0 | OO |
| Mar 2025 | 62 | 10 | 3 | 0 | OO |
| Feb 2025 | 56 | 12 | 1 | 0 | OO |
| Jan 2025 | 61 | 11 | 1 | 0 | OO |
| Dec 2024 | 54 | 22 | 2 | 1 | OO |
| Nov 2024 | 59 | 12 | 0 | 1 | OO |
| Oct 2024 | 55 | 19 | 1 | 0 | OO |
| Sep 2024 | 60 | 10 | 2 | 0 | OO |
| Aug 2024 | 62 | 12 | 0 | 1 | OO |
| Jul 2024 | 61 | 19 | 1 | 0 | OO |
| Jun 2024 | 60 | 7 | 0 | 0 | OO |
| May 2024 | 62 | 7 | 0 | 0 | OO |
| Apr 2024 | 44 | 7 | 0 | 0 | OO |
| Dec 2023 | 31 | 2 | 0 | 0 | OO |
| Nov 2023 | 40 | 5 | 0 | 0 | OO |
| Oct 2023 | 31 | 3 | 0 | 0 | OO |
MRY–SAN seasonal on-time pattern
Best: January (88.3%) · weakest: December (72.7%)
Strongest calendar month
January
88.3% on-time · ~39 flights/mo
Busiest calendar month
February
~56 flights/mo avg
Weakest calendar month
December
72.7% on-time · ~40 flights/mo
Cancellation Rate
1.8%
24 of 1,320 flights
Diversion Rate
0.3%
4 of 1,320 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
MRY - Monterey
Full on-time, delay-cause, and seasonal performance for Monterey, CA.
MRY on-time profileSAN - San Diego
Full on-time, delay-cause, and seasonal performance for San Diego, CA.
SAN on-time profileCompare the two airports
See MRY and SAN side by side on delays, cancellations, and reliability.
Compare MRY vs SANOrigin-hub reliability standing
Mid-pack among MRY departures
From MRY, this corridor sits with 3 other 75–85% on-time routes out of 7 tracked departures, not the hub's reliability leaders (4 at ≥85%) and not the softest ( 0 below 75%). Destination: San Diego · fleet on-time rank #1996 of 4927.
Similar routes
Other BTS-tracked routes with comparable performance or trip length to MRY–SAN.
Routes with a similar on-time rate
What the Data Says About MRY to SAN
Bureau of Transportation Statistics records show Monterey to San Diego (MRY to SAN) running a 82.9% on-time rate over 2,085 tracked flights, on the stronger end of a typical domestic pairing. When flights do run late, the average delay is 66.9 minutes. The 375-mile corridor is served by 2 carriers, and over the last 24 months 1.8% of 1,320 flights were cancelled, 0.3% diverted.
The monthly split is wide on this route: May 2024 posted the strongest performance at 89% on-time, while Dec 2024 came in at just 59% - a 30-point swing worth factoring into travel timing.
On the multi-year calendar, MRY–SAN peaks in January at 88.3% on-time while February carries the heaviest traffic (~56 flights per month) ; the softest month is December at 72.7%, a 15.6-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.
Frequently Asked Questions
Where does MRY to SAN rank among US routes by traffic? ▼
How often are flights delayed from MRY to SAN? ▼
What is the cancellation rate for MRY to SAN? ▼
How far is the flight from MRY to SAN? ▼
When is the best time to fly from MRY to SAN? ▼
Airports on this route
Data source
Data Source: Bureau of Transportation Statistics (BTS), On-Time Performance Data. Statistics reflect cumulative performance across all available reporting periods.
Read our methodology - how this data is sourced, computed, and verified.
Using MRY–SAN data
MRY–SAN runs 3.9 pts above the national 79% average; the remaining risk is month-to-month swing and carrier mix, not a weak headline rate.
- Compare MRY and SAN airport profiles: delay causes and top routes differ even on the same corridor. MRY airport
- If your dates flex, January (88.3% on-time) beats December (72.7%) on this corridor. Seasonal chart
- 4 other routes post a similar 82.9% on-time rate; compare before you commit to this pairing. Similar routes
On-time rate reflects the BTS historical average across all reporting carriers on this origin–destination pair, not any single flight or booking recommendation.
Every figure on PlainFlights is rendered directly from BTS On-Time Performance data, no number is typed in by an editor. This page aggregates this specific route's on-time performance and monthly trend, live from the dataset. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.