Flight number record

OO 3450

SkyWest Airlines · San Francisco to Santa Ana

Route: SFO → SNA
Departs: 07:00
Flights: 293
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s OO 3450, 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 3450 lands a B, 4 points better than the national rate of 77.6%. About one flight in six arrives 15 minutes late or worse, and those flights are late by about an hour on average. That is a workable record, not a spotless one. That rests on 293 flights, with a median arrival 7 minutes early.

Set against the rest of the country, OO 3450's record is 4 points better than the US average of 77.6%. That gap is worth roughly 44 fewer late arrivals for every thousand flights.

On time

82.0%

Arrivals under 15 minutes late, of 289 completed flights

Avg delay

56 min

Across delayed arrivals only, not all flights

Cancelled

1.02%

National rate is 1.81%

1 hour+ late

6.6%

National rate is 8.1%

These figures cover 293 flights between July 2025 and June 2026. The median arrival is 7 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 3450 flies

OO 3450 flies SFO to SNA without a single fixed slot. Its most common scheduled departure was 07:00, used on 71 of 293 flights, with 09:28 (50 flights) and 08:14 (45 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 07:0071 flights24.2%
Departs 09:2850 flights17.1%
Departs 08:1445 flights15.4%

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 07:00 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and OO 3450 runs 7 points worse at 82.0%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.

Against the route

OO 3450 next to SFO to SNA

Every carrier on SFO to SNA combined arrived on time 80.3% of the time across 4,726 flights, so OO 3450 is 2 points ahead of it. SkyWest flew 3,521 flights on the same city pair under all its flight numbers, including this one, and those ran 79.4% on time. Across its whole network SkyWest Airlines managed 79.0%, which this flight beats by 3 points.

OO 3450 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
OO 3450thin sample	293	82.0%	56 min	1.02%	B
All SkyWest Airlines on SFO–SNA	3,521	79.4%	60 min	1.42%	B
All carriers on SFO–SNA	4,726	80.3%	60 min	1.18%	B
SkyWest Airlines, whole network	852,935	79.0%	88 min	1.77%	B

Across the year

OO 3450 quarter by quarter

OO 3450 did not run the same all year. Its best quarter was Jul–Sep 2025 at 90.6% on time and its weakest Apr–Jun 2026 at 61.0%, a swing of 30 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 202585 flights90.6%
Oct–Dec 202561 flights82.8%
Jan–Mar 202687 flights87.4%
Apr–Jun 202660 flights61.0%

Scale runs 55% to 95%. Rows with fewer than 30 flights show a dash.

By weekday, OO 3450 did best on Wednesday at 88.9% on time and worst on Tuesday at 73.9%. Each day rests on about 42 flights, so a gap of 15 points is worth noticing but could still narrow in another year.

Delay causes

Why OO 3450 runs late

One category carries most of the weight here. Late-arriving aircraft accounts for 50% of the 2,926 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
50%
National Airspace System
32%
Carrier
16%
Extreme weather
2%

50% 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 2,926 reported delay minutes here, that single category outweighs weather by 23 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 2,926 delay minutes reported on OO 3450.

Cancellations sit at 1.02% against a national 1.81%, which is ordinary. Diversions add another 0.34%.

Connections and routes

What a delay on this flight costs

6.6% 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 an hour, which a normal layover absorbs.

The same number turns up on three other city pairs in the data, including SNA to SFO (207), SJC to SNA (9) and OAK to SNA (1), but none flew often enough under OO 3450 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to SFO to SNA only.

One caution: this is a thin sample. 293 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 OO 3450

For a booking, read OO 3450 as 82.0% on time with 1.02% cancelled over 293 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