Route profile
SFO→SNA
Flight reliability, delays and best times to fly from San Francisco to Santa Ana. · 372 miles
Right now
Current conditions at both ends of this route.
Aviation weather is not currently a factor.
Aviation weather is not currently a factor.
Airport conditions describe the airfield, not any individual flight. An airport operating normally is not a guarantee that a specific flight will depart on time.
Route reliability
July 2023 – June 2026
Better than 68% of comparable major US routes (4,577 compared)
Calculated from 13,328 flights. How this is calculated
Source: US DOT Bureau of Transportation Statistics · Data covering July 2023 – June 2026
Best time to fly
On-time arrival rate by scheduled local departure time.
SFO → SNA flights departing 5–9 AM arrived on time 90.5% of the time, against 75.5% for 3–6 PM departures — a gap of 14.9 percentage points.
By departure window
By departure hour
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – June 2026 · Buckets with fewer than 120 flights are not scored.
Why SFO → SNA runs late
Where US DOT attributed the delay minutes on this route.
the inbound aircraft was late, so this flight started late
crew, maintenance, boarding, fuelling — within the carrier’s control
airspace and airport capacity, including weather-driven flow control
weather severe enough to stop this flight specifically
Share of the delay minutes US DOT attributed to each cause for SFO → SNA. A single late flight can carry more than one cause, and only delays of fifteen minutes or more are attributed at all.
A route inherits the problems of both ends and of the aircraft flying it. A large share attributed to late-arriving aircraft usually means the departure sits late in a busy rotation rather than that anything about this city pair is difficult, which is why the same route often performs very differently at different times of day.
Airlines on this route
Performance by the carrier that actually operated the flight.
| Carrier | Flights | On time | Cancelled | Median delay | Severe |
|---|---|---|---|---|---|
| SkyWest Airlines | 9,781 | 80.1% | 1.30% | -5 min | 5.8% |
| United Airlines | 2,882 | 83.9% | 0.42% | -8 min | 4.4% |
| Frontier Airlines | 381 | 71.2% | 2.36% | -2 min | 12.4% |
| Alaska Airlines | 284 | 80.9% | 0.35% | -4 min | 6.4% |
United Airlines arrived on time 12.6 percentage points more often than Frontier Airlines on this route.
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – June 2026 · Carriers with fewer than 200 flights on this route are not listed.
Other ways to fly San Francisco to Los Angeles
Airport pairs serving the same journey, grouped by the DOT's own city-market definition. They do not perform the same way.
| Route | Flights | On time | Cancelled | Median delay | Score |
|---|---|---|---|---|---|
| SFO→LAX San Francisco to Los Angeles | 33,688 | 77.6% | 0.70% | -6 min | 68 |
| SJC→LAX San Jose to Los Angeles | 15,203 | 87.0% | 0.34% | -10 min | 88 |
| SFO→SNA this route San Francisco to Santa Ana | 13,328 | 80.7% | 1.12% | -6 min | 73 |
| SFO→BUR San Francisco to Burbank | 9,390 | 78.5% | 1.08% | -6 min | 68 |
| OAK→BUR Oakland to Burbank | 9,287 | 84.5% | 1.41% | -9 min | 79 |
| OAK→LAX Oakland to Los Angeles | 8,847 | 83.6% | 0.87% | -8 min | 80 |
| SJC→SNA San Jose to Santa Ana | 8,121 | 87.3% | 0.94% | -9 min | 88 |
| OAK→SNA Oakland to Santa Ana | 7,768 | 86.5% | 0.71% | -9 min | 88 |
| SJC→BUR San Jose to Burbank | 7,245 | 85.2% | 1.42% | -9 min | 79 |
| OAK→ONT Oakland to Ontario | 4,688 | 84.7% | 0.49% | -8 min | 84 |
| SFO→ONT San Francisco to Ontario | 4,307 | 80.8% | 1.04% | -6 min | 70 |
| SJC→ONT San Jose to Ontario | 4,114 | 85.2% | 0.39% | -8 min | 86 |
SJC → SNA is the most reliable pairing for this journey at 87.3% on time, against 78.5% for SFO → BUR.
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – June 2026 · Grouped by DOT city market, which places Newark with the New York airports and Baltimore with the Washington ones.
Individual flights on this route
The same route is not equally reliable at every hour. These are the flight numbers with enough operating history to judge separately.
| Flight | Scheduled | Operations | On time |
|---|---|---|---|
| OO5440 SkyWest Airlines | 1:30 PM | 888 | 79.1% |
| OO3494 SkyWest Airlines | 3:42 PM | 636 | 75.9% |
| OO3440 SkyWest Airlines | 7:00 AM | 546 | 92.4% |
| OO3450 SkyWest Airlines | 7:00 AM | 518 | 84.0% |
| OO5937 SkyWest Airlines | 7:15 AM | 516 | 88.9% |
| UA589 United Airlines | 7:10 PM | 498 | 90.1% |
| OO3404 SkyWest Airlines | 11:40 AM | 491 | 71.1% |
| OO3465 SkyWest Airlines | 6:00 PM | 449 | 81.6% |
| OO5650 SkyWest Airlines | 4:50 PM | 380 | 76.6% |
| OO3492 SkyWest Airlines | 4:05 PM | 344 | 77.8% |
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – June 2026 · Flight numbers with fewer than 270 operations on this route, or no longer scheduled, are not listed.
Weekly and seasonal patterns
By day of week
Tuesday is historically the most reliable day and Sunday the least, a gap of 10.0 percentage points.
By month
April is historically the weakest month and August the strongest, a spread of 9.9 percentage points.
Historical trend
On-time arrival rate by month.
Over the most recent 12 months (2025-07 to 2026-06), on-time arrivals averaged 80.2% against 81.7% in the 12 months before — declining by 1.5 percentage points.
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – June 2026
Data and methodology
All figures on this page are calculated by FlyerIntel from 13,328 SFO → SNA flight records published by the US DOT Bureau of Transportation Statistics, covering July 2023 – June 2026. A flight is counted as delayed when it arrives 15 or more minutes after its scheduled arrival time, following BTS methodology. Cancelled and diverted flights have no arrival time and are excluded from on-time rates rather than counted as late.
Full methodology · Data sources · Report a problem
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