Route on-time record
EWR to SAN: most on-time flights and the best time to fly
Newark (Newark Liberty International Airport) to San Diego (San Diego International Airport). 1,553 nonstop flights in Jun 2025 to May 2026, 80% arrived within 15 minutes and 2.1% were cancelled. The most reliable flight number was United 1337 at 6:35 AM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
EWR → SAN
Newark to San Diego: 1,553 nonstop flights a year
On time (12 months)
80%
Cancelled
2.1%
avg delay 15 min
Best time to leave
Before 9 AM
92% on time vs 74% 3 to 6 PM
Most reliable airline
United
80% chance on time
Lowest nonstop fare seen in the next two months: $184 (Alaska 573 on 2026-11-10). Fares open on our travel partner (Aviasales). Pick the flight number you chose here.
Most reliable nonstop flights
Ranked by the chance the flight operates and arrives within 15 minutes of schedule, from Jun 2025 to May 2026 records.
#1 · United 1337
6:35 AM → 9:21 AM5h 46m nonstop
Local times, typical schedule. Last flown 2026-05-31.
91%
chance on time
- On time (history)
- 100%
- Cancelled
- 0.0%
- Avg arrival delay
- 0 min
- Arrived on time 100% of the time (11 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 92% on time; 3 to 6 PM: 74%).
- Departs outside EWR's trouble window (1 PM to 7 PM, when 65% of its 261 ground stops and delay programs started).
- Lands inside SAN's trouble window: 66% of its 166 ground stops and delay programs started between 6 AM and noon.
Limited track record · 11 flights
Find United 1337 fares Opens this date on Aviasales#2 · United 1826
9:55 AM → 1:05 PM6h 10m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as United 2147; its record covers all of them.
84%
chance on time
- On time (history)
- 86%
- Cancelled
- 1.1%
- Avg arrival delay
- 10 min
- Arrived on time 86% of the time (352 flights, Jun 2025 to May 2026).
- Departs outside EWR's trouble window (1 PM to 7 PM, when 65% of its 261 ground stops and delay programs started).
Strong track record · 352 flights
Find United 1826 fares Opens this date on Aviasales#3 · United 299
9:34 AM → 12:43 PM6h 09m nonstop
Local times, typical schedule. Last flown 2026-05-20.
79%
chance on time
- On time (history)
- 86%
- Cancelled
- 0.0%
- Avg arrival delay
- 5 min
- Arrived on time 86% of the time (21 flights, Jun 2025 to May 2026).
- Departs outside EWR's trouble window (1 PM to 7 PM, when 65% of its 261 ground stops and delay programs started).
Limited track record · 21 flights
Find United 299 fares Opens this date on Aviasales#4 · United 1626
5:44 PM → 9:01 PM6h 17m nonstop
Local times, typical schedule. Last flown 2026-05-31.
77%
chance on time
- On time (history)
- 79%
- Cancelled
- 2.0%
- Avg arrival delay
- 15 min
- Arrived on time 79% of the time (337 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (3 to 6 PM: 74% on time; Before 9 AM: 92%).
- Departs inside EWR's trouble window: 65% of its 261 ground stops and delay programs started between 1 PM and 7 PM.
Strong track record · 337 flights
Find United 1626 fares Opens this date on Aviasales#5 · Alaska 297
4:35 PM → 7:39 PM6h 04m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as Alaska 573; its record covers all of them.
74%
chance on time
- On time (history)
- 79%
- Cancelled
- 4.4%
- Avg arrival delay
- 18 min
- Arrived on time 79% of the time (262 flights, Jun 2025 to May 2026).
- Cancelled 4.4% of the time (12 of 275).
- Leaves in this route's least on-time window (3 to 6 PM: 74% on time; Before 9 AM: 92%).
- Departs inside EWR's trouble window: 65% of its 261 ground stops and delay programs started between 1 PM and 7 PM.
Strong track record · 262 flights
Find Alaska 297 fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- United Airlines80%
1,225 flights · 81% on time as flown · 1.5% cancel
- Alaska Airlines75%
328 flights · 77% on time as flown · 3.6% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM92%
364 flights · avg delay 5 min
- 9 AM to noon81%
362 flights · avg delay 10 min
- 3 to 6 PM74%
567 flights · avg delay 21 min
- 6 to 9 PM74%
259 flights · avg delay 22 min
Best day: Tuesday (82%). Worst: Sunday (75%).
On time by month
All airlines, Jun 2023 to May 2026. Several years per month, so one stormy season doesn't define a month. Travel-month estimates use this seasonal pattern.
What delays this route
- Late-arriving aircraft37%
- Air traffic control and airport volume30%
- Airline (crew, maintenance, boarding)23%
- Severe weather9%
Share of delay minutes by the cause airlines report to the US DOT.
Historical odds, not a guarantee. Built from the US DOT Bureau of Transportation Statistics on-time reports (Jun 2025 to May 2026), FAA ground stop and delay program advisories, and 20 years of airport weather observations. Covers US airlines that report to the DOT; schedules are flights operated recently, so confirm times when you book. ATIS Alerts is not affiliated with any airline. Fares are what Aviasales travelers saw in recent searches (USD, one way, 1 adult), not live quotes; the partner site shows the current price. Fare links go to our travel partner and may earn us a commission at no cost to you. Affiliate disclosure
EWR to SAN questions
- What time of day is best to fly EWR to SAN?
- Before 9 AM: 92% of flights arrived on time, against 74% for departures 3 to 6 PM. Later flights inherit delays from earlier ones, so the first departures of the day usually run best.
- Which airline is most on time from EWR to SAN?
- United, with a season-adjusted 80% chance of operating and arriving on time over 1,225 flights. The adjustment compares each airline with what the route did in the months it flew, so a carrier that skipped a stormy month gets no free credit.
- What is the worst month for delays on EWR to SAN?
- July (60% on time); the best was March (87%), averaged over Jun 2023 to May 2026.
- Is this a prediction for my flight?
- No. These are historical odds from the US DOT on-time reports, FAA advisories and airport weather records. Check your flight status and the FAA delay board on the day you fly.
More routes from EWR
- SAN to EWR (return)
- EWR to MCO 76%
- EWR to ATL 77%
- EWR to ORD 71%
- EWR to LAX 72%
- EWR to FLL 75%
- EWR to SFO 71%
- EWR to MIA 77%
- EWR to BOS 71%
- EWR to CLT 80%
- EWR to IAH 79%
- EWR to DTW 79%
- EWR to PBI 77%
Most on-time flights from EWR on every route →
Live status: FAA delays and ground stops