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Airport · MRY · Monterey, California

Monterey, CA

Monterey, CA posts above-median on-time performance among the 382 tracked U.S. airports, as a mid-size U.S. airport. According to the U.S. DOT Bureau of Transportation Statistics, drawn from 47,880 flights (2020–2025); its biggest delay driver is late aircraft.

Data updated 2026-06-13

83.9%
On-time
Top 45%
on-time, US airports
87 min
Delay when late
0.86%
Cancelled

Key Performance Metrics

Total Flights

47,880

Best Month

Apr 94.6%

Worst Month

Dec 90.4%

Delayed

7,712

Cancelled

412

MRY on-time rate vs. the national average

Ahead of the U.S. average across all 382 tracked airports.

0%100%U.S. average79%83.9%

Where MRY sits among all 382 tracked airports

MRY's 83.9% on-time rate falls in the 80-85% band, the 192-airport band it shares.

National on-time-rate distribution

airports

What this shows MRY is marked in the 80-85% band.

Delay Cause Breakdown

Top delay cause: Late Aircraft. Total delay minutes: 342,626.

Late Aircraft 40.4% (138,332 min)
Carrier 40.2% (137,699 min)
NAS (National Aviation System) 10.1% (34,775 min)
Weather 9.3% (31,766 min)
Security 0.0% (54 min)

MRY - seasonal on-time pattern

Best: April (94.6%) · worst: December (90.4%)

90%91%92%93%94%95% JanFebMarAprMayJunJulAugSepOctNovDec 90.4%

Seasonal Performance Patterns

Monthly averages across all years of data. Best month: April (94.6% on-time). Most delays: December (90.4% on-time).

Month Avg Flights Avg Delayed Avg Cancelled On-Time %
December 640 126 5 90.4%
November 718 106 5 93.2%
October 747 113 4 92.8%
September 685 89 1 94.1%
August 716 122 3 92.3%
July 698 137 4 91.9%
June 655 130 3 91.2%
May 625 101 6 92.9%
April 631 78 14 94.6%
March 674 99 14 93.1%
February 589 96 5 92.4%
January 602 88 5 93.4%

Year-Over-Year Performance

Annual flight volume and on-time trends at MRY.

MRY - on-time rate by year

2020–2025, year-over-year trend.

90%92%94%96%98% 202020212022202320242025 95.9% 92.8% ▼ -3.2%
Year Flights Delayed Cancelled On-Time %
2025 9,731 700 51 92.8%
2024 9,379 753 42 92%
2023 7,924 630 38 92%
2022 8,262 662 41 92%
2021 7,341 538 65 92.7%
2020 5,243 213 175 95.9%

Cancellation & Diversion Analysis

Flight disruption statistics for Monterey, CA.

Cancellation Rate

0.86%

412 of 47,880 flights

Diversion Rate

0.12%

56 of 47,880 flights

Delay Rate

16.1%

7,712 of 47,880 flights

Monthly Performance

Recent 24 months of flight data.

Period Flights Dep Delayed Arr Delayed Cancelled Diverted
Dec 2025 738 59 71 4 1
Nov 2025 868 65 75 13 0
Oct 2025 828 59 76 2 0
Sep 2025 782 38 58 5 2
Aug 2025 801 62 73 2 4
Jul 2025 812 69 97 5 2
Jun 2025 812 68 102 5 1
May 2025 795 66 79 1 1
Apr 2025 882 47 71 2 1
Mar 2025 906 61 76 5 1
Feb 2025 732 65 82 4 0
Jan 2025 775 41 62 3 1
Dec 2024 815 82 81 6 1
Nov 2024 860 69 85 7 1
Oct 2024 922 59 77 1 0
Sep 2024 786 57 63 2 1
Aug 2024 882 67 90 0 2
Jul 2024 883 96 123 8 2
Jun 2024 853 82 96 1 2
May 2024 861 69 95 5 0
Apr 2024 700 44 52 1 0
Mar 2024 599 43 40 2 2
Feb 2024 600 40 53 8 0
Jan 2024 618 45 57 1 0

What the Data Says About MRY

Monterey, CA in Monterey, California handled 47,880 flights in the Bureau of Transportation Statistics dataset between 2020 and 2025, posting a 83.9% on-time departure rate. Of those flights, 7,712 experienced delays, 412 were cancelled, and 56 were diverted. The cancellation rate works out to 0.86%, the diversion rate to 0.12%, and the average delay when departures run late is 86.7 minutes. These figures are the baseline for comparing MRY against other airports in the same state and nationally.

Breaking down what drives delays at MRY, Late Aircraft leads the pack. Late Aircraft accounts for 40.4% of total delay minutes, followed by Carrier at 40.2% and NAS (National Aviation System) at 10.1%. Weather contributes 9.3% of delay minutes at this airport, while security holds the smallest share at 0.0%. Travelers often overestimate the weather share; the BTS categorization shows late-arriving aircraft and carrier operations as the larger contributors.

Seasonally, April runs the cleanest at MRY with a 94.6% on-time rate, while December is the roughest at 90.4% - a 4-point swing between best and worst month. Volume peaks in October, when average flights hit 747. The busiest route connecting MRY is to PHX (Phoenix), with 6,745 flights at a 82% on-time rate. Combine these numbers - 83.9% on-time, 86.7-minute average delay, 0.86% cancellation rate, and you have a concrete picture of departure reliability at Monterey, CA.

Frequently Asked Questions

What is the on-time performance rate at Monterey, CA (MRY)?
Monterey, CA has an overall on-time departure rate of 83.9%. Out of 47,880 total flights tracked, 7,712 experienced delays and 412 were cancelled.
What is the most common cause of delays at MRY?
The top delay cause at Monterey, CA is Late Aircraft. Late Aircraft accounts for 40.4% of all delay minutes.
What is the average delay time at MRY?
The average delay at Monterey, CA is 86.7 minutes. This includes delays from carrier issues, weather, National Aviation System constraints, security, and late-arriving aircraft.
What is the best month to fly from MRY?
Based on historical data, April has the best on-time performance at MRY with 94.6% of flights departing on time.
What is the worst month for delays at MRY?
December tends to have the most delays at MRY, with an on-time rate of only 90.4%.
How many routes operate from MRY?
Monterey, CA serves at least 14 routes. The busiest route is PHX to MRY (Phoenix - Monterey) with 6,745 flights.
What is the cancellation rate at MRY?
Monterey, CA has a cancellation rate of 0.86%, based on 412 cancelled flights out of 47,880 total flights tracked.

Explore PlainFlights

Data Source: Bureau of Transportation Statistics (BTS), On-Time Performance Data (2020–2025). Statistics reflect cumulative performance across all available reporting periods. On-time rates exclude cancelled and diverted flights.

Using MRY's data

An airport-level on-time rate is a starting point, not a guarantee for your specific flight.

  • Check the busiest route from MRY before you book a connection. See top routes
  • Travel in April rather than December if your dates are flexible. Seasonal patterns
  • Scores vary by airline and route within the same airport; check the specific carrier you're flying. Browse airlines

On-time rate reflects the BTS historical average across all reporting carriers at this airport, not any single flight or airline.

Data sourced from U.S. Department of Transportation Bureau of Transportation Statistics (BTS) On-Time Performance data. See our methodology for details. Retrieved and formatted by PlainFlights Editorial

Source: U.S. Bureau of Transportation Statistics (BTS) Airline on-time performance and operational reliability · 2025

Every figure on PlainFlights is rendered directly from BTS On-Time Performance data, no number is typed in by an editor. Airport figures are computed directly from BTS On-Time Performance data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.