Route reliability record
SNA→EWR
Santa Ana to Newark
- Flights
- 1,091
- Period
- September 2025 to August 2026
- Distance
- 2,433 mi
- Carriers
- 1
This route lands a B, 2 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 about 2.2 hours on average. That rests on 1,091 SNA to EWR flights, with a median arrival 9 minutes early.
Best time to fly SNA to EWR: a 5am–8am departure, ideally on a Saturday. Flights in that window arrived on time 87.4% of the time and Saturday flights 85.1%, against 79.3% for the route overall.
The US average over the same twelve months is 77.3%, so there is little to separate this route from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.
Key figures
On time
79.3%
Arrivals under 15 minutes late, of 1,046 completed flights
Avg delay
134 min
Across delayed arrivals only, not all flights
Cancelled
2.11%
National rate is 1.89%
Best carrier
United
79.3% on time across 1,091 flights
These figures cover 1,091 flights between September 2025 and August 2026. Beyond the headline rate, 10.0% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Carrier by carrier
Which airline is most reliable on SNA to EWR
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 |
|---|---|---|---|---|---|
| United Airlines | 1,091 | 79.3% | 134 min | 2.11% | B |
Flight by flight
Flights on SNA to EWR
The flight numbers below flew this route at least 250 times in the period, busiest first. Each has its own record, with its schedule and delay causes.
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Best ways to make this trip
The most reliable ways to fly Santa Ana to Newark
Every airline on this route and on the routes between nearby airports, ranked by how often a scheduled flight actually operated and arrived on time. 4 of the top 5 use a different airport at one end.
| Option | Airline | Success | On time | Cancelled | Best departure | Most punctual flight |
|---|---|---|---|---|---|---|
| 1. LAX → EWRLos Angeles to Newark | Alaska Airlines | 90.1% | 91.6% | 1.63% | 5am–8am, Tue | — |
| 2. SNA → EWRSanta Ana to Newark | United Airlines | 77.6% | 79.3% | 2.11% | 5am–8am, Sat | UA 2186 21:14 |
| 3. LAX → JFKLos Angeles to New York | Delta Air Lines | 77.3% | 79.4% | 2.61% | 5am–8am, Wed | DL 934 06:00 |
| 4. LAX → EWRLos Angeles to Newark | United Airlines | 76.3% | 77.7% | 1.76% | 5am–8am, Tue | UA 2743 07:00 |
| 5. LAX → EWRLos Angeles to Newark | JetBlue Airways | 75.6% | 78.4% | 3.54% | 5am–8am, Fri | — |
Success is the share of scheduled flights that operated and arrived less than 15 minutes late, so a cancelled flight counts against it. “(route)” means the best time comes from every carrier on the route rather than this airline alone.
Departure window
The best time of day to leave
Departure time matters more here than the choice of carrier. The gap between the best and worst window is 23 points, against half a point between the best and worst carrier.
- 5am–8am341 flights87.4%
- 8am–11am23 flights—
- 11am–2pm364 flights64.0%
- 2pm–5pm—
- 5pm–8pm—
- 8pm–5am363 flights87.4%
Scale runs 55% to 95%. Rows with fewer than 30 flights show a dash.
The weak window here is the middle of the day, not the evening: 11am–2pm runs 64.0% on time against 87.4% for 5am–8am. That shape usually means a departure bank rather than an accumulating delay, so the recovery later in the afternoon is real rather than noise. The 11am–2pm window is the busiest, with 364 flights scheduled in it.
Explore
Filter SNA to EWR by airline, time, month and day
Pick a breakdown and a carrier. The dashed mark on each row is the same slice for every US flight.
On SNA to EWR, the best departure window is 5am–8am at 87.4% on time and the worst is 11am–2pm at 64.0%, a wide gap of 23.4 points. All US flights leaving 5am–8am ran 89.3%.
- 5–8am87.4%
- 8–11am—
- 11am–2pm64.0%
- 2–5pm—
- 5–8pm—
- 8pm–5am87.4%
best all US flightsScale 55% to 95%. Cells under 30 flights show a dash.
Across the year
When delays peak on this route
This route's year swings by 25 points from best month to worst, which is wide. An annual average tells you very little about the week you are actually flying, so read the strip rather than the headline if your dates are fixed.
May is the best month on the calendar at 93.4% on time. Shoulder season thins the schedule and takes the summer weather with it, and the operation gets its margin back. January was the busiest month here, with 93 flights.
Across the week, Saturday is the strongest day at 85.1% on time and Sunday the weakest at 66.0%, a spread of 19 points.
Delay causes
Why this route gets delayed
National Airspace System accounts for 42% of the 29,000 delay minutes carriers reported here, and the remaining four split what is left.
- 42%National Airspace System
- 24%Extreme weather
- 18%Late-arriving aircraft
- 17%Carrier
Extreme weather accounts for 24% of delay minutes, well above the single-digit share typical across the system. Weather delays are lumpy: they arrive as whole bad days rather than as a steady drag, so the monthly strip above is the more useful view of the risk. The national share is 6%, so this operation carries roughly 3.9 times the usual weather exposure. The split is drawn from 29,103 reported delay minutes.
42% of delay minutes are charged to the National Airspace System: air traffic volume, runway configuration, ground stops. No carrier can price its way out of that, which is why airport choice moves the number here more than carrier choice does. That is 12,000 minutes out of 29,000, against a national NAS share of 21%.
Cancellations sit at 2.11% against a national 1.89%, which is ordinary. Diversions add another 2.02%.
Connections and stage length
What a delay here actually costs
10.0% 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 2,433 miles this is transcontinental flying, and long routes get a quiet structural advantage. Scheduled block time on a flight this length carries more padding in absolute minutes, so a twenty-minute late departure often still becomes an on-time arrival. Read the on-time rate here as slightly flattering next to a short-haul route with the same operational quality.
The return leg is a different operation and performs like one: it runs 84.7% on time across 1,091 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. 1,091 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.
Work out the risk of missing a connection in EWR after this flight
What to do with this
Booking this route
Put together: treat all of this as provisional. 1,091 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 79.3% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 1,046 completed flights over 12 months sit behind that.
Common questions
SNA to EWR questions
How often is SNA to EWR delayed?
About one flight in five arrives at least 15 minutes late, which is the Department of Transportation's definition of a delayed arrival. That works out to 20.7% of the 1,091 flights in this analysis, against 22.7% nationally. Delayed flights are late by about 2.2 hours on average.
How reliable is SNA to EWR compared with the rest of the country?
79.3% of flights arrive on time here against a national 77.3%, a difference of 2 points in its favour. That is worth a B on this site's grading scale.
What time of day has the fewest delays on SNA to EWR?
The 5am–8am departure window is the strongest at 87.4% on time. The 11am–2pm window is the weakest at 64.0%, 23 points behind. Later departures inherit delays from earlier flights the same aircraft has already flown, which is why the curve slopes the way it does.
How bad are March delays on SNA to EWR?
March is the weakest month at 68.1% on time, compared with 93.4% in May. Across the year that is 25 points between the best and worst months. Moving flexible dates out of that month is one of the few things that reliably helps.
Related
Where to go next
- EWR to SNA — the return legseparate record
- John Wayne Airport (SNA) delay statistics
- Newark Liberty International (EWR) delay statistics
- SNA to SFO, a related route65.5%
- MCO to EWR, a related route75.0%
- SNA to PHX, a related route82.3%
- United Airlines on-time record79.3%
- How often a connection fails at the major US hubs
- The best time of day to fly, according to 7.05 million flight records
Direction matters. SNA to EWR and EWR to SNA are scored separately because they are separate operations, with different departure banks and different aircraft. Compare the return leg.
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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.