Flight number record

OO 3346

SkyWest Airlines · San Diego to Monterey

Route: SAN → MRY
Departs: 15:45
Flights: 290
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s OO 3346, check with SkyWest Airlines. SkyWest Airlines flies under contract for larger airlines, so a ticket for this flight may show a different airline code and number.

OO 3346 lands a B+, 4 points better than the national rate of 77.6%. About one flight in five arrives 15 minutes late or worse, and those flights are late by about 50 minutes on average. That is a workable record, not a spotless one. That rests on 290 flights, with a median arrival 9 minutes early.

On time

81.1%

Arrivals under 15 minutes late, of 286 completed flights

Avg delay

51 min

Across delayed arrivals only, not all flights

Cancelled

0.69%

National rate is 1.81%

1 hour+ late

7.0%

National rate is 8.1%

These figures cover 290 flights between July 2025 and June 2026. The median arrival is 9 minutes early, which is the part an average hides: most flights here are fine, and the on-time rate is decided by a tail of badly late ones. On-time means under 15 minutes late, the DOT's own threshold.

Schedule

When OO 3346 flies

OO 3346 flies SAN to MRY without a single fixed slot. Its most common scheduled departure was 15:45, used on 50 of 290 flights, with 16:43 (45 flights) and 12:30 (42 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 15:4550 flights17.2%
Departs 16:4345 flights15.5%
Departs 12:3042 flights14.5%

Scale runs 0% to 100%. Rows with fewer than 30 flights show a dash.

Share of scheduled departures at each local time. Times used on fewer than one flight in ten are not listed.

A 15:45 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 72.4%, and OO 3346 runs 9 points better at 81.1%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.

Against the route

OO 3346 next to SAN to MRY

Every carrier on SAN to MRY combined arrived on time 78.8% of the time across 539 flights, so OO 3346 is 2 points ahead of it. Across its whole network SkyWest Airlines managed 79.0%, which this flight beats by 2 points.

OO 3346 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
OO 3346thin sample	290	81.1%	51 min	0.69%	B+
All SkyWest Airlines on SAN–MRY	539	78.8%	43 min	3.34%	B−
All carriers on SAN–MRY	539	78.8%	43 min	3.34%	B−
SkyWest Airlines, whole network	852,935	79.0%	88 min	1.77%	B

Across the year

OO 3346 quarter by quarter

OO 3346 did not run the same all year. Its best quarter was Jul–Sep 2025 at 85.9% on time and its weakest Oct–Dec 2025 at 69.6%, a swing of 16 points on roughly 73 flights a quarter. The twelve-month rate averages over that, so if you are flying in a weak quarter the quarter's own figure is the better guide.

Jul–Sep 202592 flights85.9%
Oct–Dec 202582 flights69.6%
Jan–Mar 202653 flights84.6%
Apr–Jun 202663 flights85.7%

Scale runs 60% to 90%. Rows with fewer than 30 flights show a dash.

By weekday, OO 3346 ranged from 76.2% on Thursday to 85.0% on Tuesday. With about 41 flights behind each day, a spread of 9 points is inside normal variation, so the day you fly is not worth changing for this flight.

Delay causes

Why OO 3346 runs late

One category carries most of the weight here. Late-arriving aircraft accounts for 53% of the 2,755 delay minutes carriers reported, and the remaining four split what is left. The split is by minutes rather than by flights, so a few very long delays count for as much as many short ones.

Late-arriving aircraft
53%
National Airspace System
31%
Carrier
15%
Extreme weather
2%

53% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. That is a cascade, and cascades start small and grow through the day. Across 2,755 reported delay minutes here, that single category outweighs weather by 31 to one. It is the strongest argument for booking the first departure of the morning, when the aircraft has been sitting at the gate overnight with nothing to inherit. The split is drawn from 2,755 delay minutes reported on OO 3346.

Cancellations are rare at 0.69%, below the national 1.81% and low enough to earn the plus on the grade. Roughly one flight in 100 is called off; the risk here is arriving late, not not arriving.

Connections and routes

What a delay on this flight costs

7.0% of arrivals land an hour or more late, close to the national 8.1%. That is the figure that decides a connection, and it says a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last about 50 minutes, which a normal layover absorbs.

OO 3346 is not only a SAN to MRY flight. It also flew MRY to SAN (267 flights, 70.3% on time) often enough to be scored on its own. Airlines attach one number to several legs of an aircraft's day, and each leg keeps its own record here, so check which city pair is on your booking before reading a rate.

One caution: this is a thin sample. 290 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.

Other routes flown as OO 3346
Also flown as	Flights	On time	Avg delay	Cancelled	Grade
MRY to SANthin sample	267	70.3%	48 min	1.12%	C

What to do with this

Booking OO 3346

For a booking, read OO 3346 as 81.1% on time with 0.69% cancelled over 290 flights. Those are rates from the past twelve months, not a forecast for any particular day.

Where to go next

A flight number here means SkyWest Airlines’s own number as it reports to the DOT. How the figures are computed is on the methodology page.

Source: US DOT Bureau of Transportation Statistics, on-time performance data, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.

Key figures