Carrier route record
UALAX→MRY
United Airlines · Los Angeles to Monterey
- Flights
- 123
- Period
- September 2025 to August 2026
- Share of route
- 15%
- Carriers
- 2
Historical statistics for September 2025 to August 2026, not live status. For today’s flights, check with United Airlines.
United on LAX to MRY lands a B+, 3 points better than the national rate of 77.3%. About one flight in five arrives 15 minutes late or worse, and those flights are late by a little over an hour on average. That rests on 123 flights, with a median arrival 9 minutes early.
The US average over the same twelve months is 77.3%, so there is little to separate United on LAX to MRY from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.
Key figures
On time
80.5%
Arrivals under 15 minutes late, of 123 completed flights
Avg delay
78 min
Across delayed arrivals only, not all flights
Cancelled
0.00%
National rate is 1.89%
Whole route
88.9%
Every carrier on LAX to MRY, 842 flights
These figures cover 123 flights between September 2025 and August 2026. Beyond the headline rate, 12.2% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
Fare search by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
Carrier by carrier
United against every carrier on LAX to MRY
United flew 123 of the 842 flights on LAX to MRY, about 15% of it. Its 80.5% on time is 8 points worse than the route as a whole, which runs 88.9%. Ranked by on-time rate it is last of two carriers on the route, where the range runs from SkyWest at 90.3% to United at 80.5%.
Only one carrier clears this site's 365-flight floor here, so there is no comparison to draw. The table below is the full picture.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| SkyWest Airlines | 719 | 90.3% | 57 min | 0.70% | A+ |
| United Airlines (this page)thin sample | 123 | 80.5% | 78 min | 0.00% | B+ |
Timetable by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
Departure window
When United runs best on this route
Departure time is the single lever a traveller controls, and it moves the odds more than most people expect. Each bar below is the on-time rate for flights scheduled to leave inside that window, across 123 flights.
- 5am–8am—
- 8am–11am—
- 11am–2pm—
- 2pm–5pm41 flights80.5%
- 5pm–8pm82 flights80.5%
- 8pm–5am—
Scale runs 70% to 85%. Rows with fewer than 30 flights show a dash.
The 2pm–5pm window is the strongest at 80.5% on time. The full set of windows spans half a point.
Across the year
United on LAX to MRY through the year
- Apr–Jun 202662 flights79.0%
- Jul–Sep 202661 flights82.0%
Scale runs 70% to 85%.
Monthly volumes are too low here to break the year into twelve reliable readings. What the twelve-month total says is 80.5% on time across 123 flights.
Split by quarter, United on LAX to MRY logged 62 flights in Apr–Jun 2026 and 61 flights in Jul–Sep 2026. Fewer than three of those quarters carried the 30 completed flights this site needs before printing a rate, so the 80.5% annual figure is the one to use.
Arrival by arrival
How late United on LAX to MRY runs when it is late
United on LAX to MRY often beats the schedule: 40 of 123 completed flights, 33%, arrived 15 minutes or more early. When United on LAX to MRY is late it tends to be very late: 15 of its 24 late arrivals were an hour or more behind, and 3 were two hours or more.
- 15+ min early40 flights32.5%
- Within 15 min59 flights48.0%
- 15–29 min late3 flights2.4%
- 30–59 min late6 flights4.9%
- 1–2 hours late12 flights9.8%
- 2+ hours late3 flights2.4%
Scale runs 0% to 100%.
Share of 123 completed flights by arrival against schedule.
5 of 28 late departures made up the time and arrived on time, 18% of them. Only 1 left on time and still arrived late.
The worst days
Worst days for United on LAX to MRY
The latest arrival of the period was on 21 May 2026, 4 hours 15 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. The same cause led on five of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 21 May 2026 | 4 hours 15 minutes | Late-arriving aircraft |
| 28 June 2026 | 3 hours 19 minutes | Late-arriving aircraft |
| 20 August 2026 | 2 hours 33 minutes | Late-arriving aircraft |
| 15 June 2026 | 1 hour 53 minutes | Late-arriving aircraft |
| 22 August 2026 | 1 hour 53 minutes | Late-arriving aircraft |
Delay causes
Why United runs late on this route
Late-arriving aircraft accounts for 80% of the 1,865 delay minutes carriers reported here, and the remaining four split what is left.
- 80%Late-arriving aircraft
- 11%Carrier
- 5%National Airspace System
- 4%Extreme weather
80% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 1,865 reported delay minutes here, that single category outweighs weather by 23 to one. The split is drawn from 1,865 reported delay minutes.
Cancellations are rare at 0.00%, below the national 1.89% and low enough to earn the plus on the grade. Almost no flights are called off; the risk here is arriving late, not not arriving.
Connections and stage length
What a delay here costs
12.2% of arrivals land a full hour or more behind schedule, against 8.3% nationally. Ninety minutes is the honest minimum for a connection here, and two hours if the onward flight is on a separate ticket.
At 266 miles this is a short hop, and stage length matters more than it looks. A flight this short spends under two hours in the air, which leaves almost nothing to claw back a late pushback with. Delay here is decided on the ground, in the turn, which is why the 2pm–5pm window matters as much as it does.
The return leg is a different operation and performs like one: it runs 85.2% on time across 122 flights, 5 points above this direction. Departure banks, aircraft rotations and the congestion at each end all differ, so scoring the two directions together would average away a real 5 points of difference.
One caution: this is a thin sample. 123 flights over twelve months is enough to clear this site's floor but not enough to pin the rate down tightly, and a single bad week moves it by more than a point. Treat the grade as a rough reading.
What to do with this
Booking United on LAX to MRY
Put together: treat all of this as provisional. 123 flights over twelve months is enough to clear this site's floor and not enough to be confident to better than a couple of points. The 80.5% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 123 completed flights over 12 months sit behind that.
Related
Where to go next
Source: US DOT Bureau of Transportation Statistics, on-time performance data, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.