Route on-time record
SFO to EWR: most on-time flights and the best time to fly
San Francisco (San Francisco International Airport) to Newark (Newark Liberty International Airport). 4,414 nonstop flights in Jun 2025 to May 2026, 76% arrived within 15 minutes and 2.2% were cancelled. The most reliable flight number was Alaska 1631 at 7:25 AM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
SFO → EWR
San Francisco to Newark: 4,414 nonstop flights a year
On time (12 months)
76%
Cancelled
2.2%
avg delay 20 min
Best time to leave
Before 9 AM
89% on time vs 59% noon to 3 PM
Most reliable airline
Alaska
84% chance on time
Lowest nonstop fare seen in the next two months: $188 (United 1149 on 2026-11-18). 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 · Alaska 1631
7:25 AM → 4:00 PM5h 35m nonstop
Local times, typical schedule. Last flown 2026-04-21.
93%
chance on time
- On time (history)
- 97%
- Cancelled
- 0.0%
- Avg arrival delay
- 2 min
- Arrived on time 97% of the time (35 flights, Jun 2025 to May 2026).
- Never cancelled in 35 scheduled flights.
- Leaves in this route's most on-time window (Before 9 AM: 89% on time; Noon to 3 PM: 59%).
- Departs inside SFO's trouble window: 61% of its 333 ground stops and delay programs started between 7 AM and 1 PM.
Limited track record · 35 flights
Find Alaska 1631 fares Opens this date on Aviasales#2 · Alaska 755
6:00 AM → 2:41 PM5h 41m nonstop
Local times, typical schedule. Last flown 2026-05-31.
91%
chance on time
- On time (history)
- 95%
- Cancelled
- 0.0%
- Avg arrival delay
- 2 min
- Arrived on time 95% of the time (19 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 89% on time; Noon to 3 PM: 59%).
- Departs outside SFO's trouble window (7 AM to 1 PM, when 61% of its 333 ground stops and delay programs started).
- Lands inside EWR's trouble window: 65% of its 259 ground stops and delay programs started between 1 PM and 7 PM.
Limited track record · 19 flights
Find Alaska 755 fares Opens this date on Aviasales#3 · Alaska 628
9:53 PM → 6:30 AM5h 37m nonstop
Local times, typical schedule. Last flown 2026-04-20.
90%
chance on time
- On time (history)
- 96%
- Cancelled
- 0.0%
- Avg arrival delay
- 1 min
- Arrived on time 96% of the time (26 flights, Jun 2025 to May 2026).
- Departs outside SFO's trouble window (7 AM to 1 PM, when 61% of its 333 ground stops and delay programs started).
- Short track record (26 flights), so its score leans on the airline's record at this hour.
Limited track record · 26 flights
Find Alaska 628 fares Opens this date on Aviasales#4 · Alaska 1459
9:07 PM → 5:40 AM5h 33m nonstop
Local times, typical schedule. Last flown 2026-03-17.
90%
chance on time
- On time (history)
- 100%
- Cancelled
- 0.0%
- Avg arrival delay
- 0 min
- Arrived on time 100% of the time (8 flights, Jun 2025 to May 2026).
- Departs outside SFO's trouble window (7 AM to 1 PM, when 61% of its 333 ground stops and delay programs started).
- Short track record (8 flights), so its score leans on the airline's record at this hour.
Limited track record · 8 flights
Find Alaska 1459 fares Opens this date on Aviasales#5 · United 1149
7:00 AM → 3:39 PM5h 37m nonstop
Local times, typical schedule. Last flown 2026-05-31.
89%
chance on time
- On time (history)
- 91%
- Cancelled
- 1.9%
- Avg arrival delay
- 8 min
- Arrived on time 91% of the time (313 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 89% on time; Noon to 3 PM: 59%).
- Departs inside SFO's trouble window: 61% of its 333 ground stops and delay programs started between 7 AM and 1 PM.
- Lands inside EWR's trouble window: 65% of its 259 ground stops and delay programs started between 1 PM and 7 PM.
Strong track record · 313 flights
Find United 1149 fares Opens this date on Aviasales#6 · Alaska 372
9:25 PM → 6:10 AM5h 45m nonstop
Local times, typical schedule. Last flown 2026-05-31.
87%
chance on time
- On time (history)
- 89%
- Cancelled
- 0.0%
- Avg arrival delay
- 3 min
- Arrived on time 89% of the time (19 flights, Jun 2025 to May 2026).
- Departs outside SFO's trouble window (7 AM to 1 PM, when 61% of its 333 ground stops and delay programs started).
- Short track record (19 flights), so its score leans on the airline's record at this hour.
Limited track record · 19 flights
Find Alaska 372 fares Opens this date on Aviasales#7 · Alaska 292
7:40 AM → 4:21 PM5h 35m nonstop
Local times, typical schedule. Last flown 2026-05-12.
86%
chance on time
- On time (history)
- 86%
- Cancelled
- 1.3%
- Avg arrival delay
- 11 min
- Arrived on time 86% of the time (291 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 89% on time; Noon to 3 PM: 59%).
- Departs inside SFO's trouble window: 61% of its 333 ground stops and delay programs started between 7 AM and 1 PM.
- Lands inside EWR's trouble window: 65% of its 259 ground stops and delay programs started between 1 PM and 7 PM.
Strong track record · 291 flights
Find Alaska 292 fares Opens this date on Aviasales#8 · United 419
6:00 AM → 2:37 PM5h 37m nonstop
Local times, typical schedule. Last flown 2026-05-31.
85%
chance on time
- On time (history)
- 92%
- Cancelled
- 1.6%
- Avg arrival delay
- 9 min
- Arrived on time 92% of the time (62 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 89% on time; Noon to 3 PM: 59%).
- Departs outside SFO's trouble window (7 AM to 1 PM, when 61% of its 333 ground stops and delay programs started).
- Lands inside EWR's trouble window: 65% of its 259 ground stops and delay programs started between 1 PM and 7 PM.
Moderate track record · 62 flights
Find United 419 fares Opens this date on Aviasales#9 · United 698
9:15 PM → 5:59 AM5h 38m nonstop
Local times, typical schedule. Last flown 2026-05-31.
80%
chance on time
- On time (history)
- 84%
- Cancelled
- 2.4%
- Avg arrival delay
- 12 min
- Arrived on time 84% of the time (240 flights, Jun 2025 to May 2026).
- Departs outside SFO's trouble window (7 AM to 1 PM, when 61% of its 333 ground stops and delay programs started).
Strong track record · 240 flights
Find United 698 fares Opens this date on Aviasales#10 · United 1722
11:05 PM → 7:49 AM5h 44m nonstop
Local times, typical schedule. Last flown 2026-05-20. Same departure also flew as United 1726; its record covers all of them.
80%
chance on time
- On time (history)
- 85%
- Cancelled
- 1.1%
- Avg arrival delay
- 13 min
- Arrived on time 85% of the time (88 flights, Jun 2025 to May 2026).
- Departs outside SFO's trouble window (7 AM to 1 PM, when 61% of its 333 ground stops and delay programs started).
Moderate track record · 88 flights
Find United 1722 fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- Alaska Airlines84%
664 flights · 86% on time as flown · 1.4% cancel
- United Airlines72%
3,750 flights · 74% on time as flown · 2.4% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM89%
1,097 flights · avg delay 10 min
- 9 AM to noon69%
900 flights · avg delay 27 min
- Noon to 3 PM59%
678 flights · avg delay 36 min
- 3 to 6 PM70%
361 flights · avg delay 33 min
- After 9 PM80%
1,378 flights · avg delay 13 min
Best day: Tuesday (80%). Worst: Sunday (72%).
Smarter routing
Nearby airports that run more on time
SFO → JFK 79% chance on time
San Francisco International Airport to John F. Kennedy International Airport · 6,705 flights a year · 21 mi from your airports · yours: 74%
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 aircraft45%
- Air traffic control and airport volume28%
- Airline (crew, maintenance, boarding)27%
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
SFO to EWR questions
- What time of day is best to fly SFO to EWR?
- Before 9 AM: 89% of flights arrived on time, against 59% for departures noon to 3 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 SFO to EWR?
- Alaska, with a season-adjusted 84% chance of operating and arriving on time over 664 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 SFO to EWR?
- July (64% on time); the best was October (85%), 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 SFO
- EWR to SFO (return)
- SFO to LAX 76%
- SFO to SEA 74%
- SFO to JFK 80%
- SFO to SAN 68%
- SFO to LAS 76%
- SFO to ORD 77%
- SFO to DEN 76%
- SFO to SNA 81%
- SFO to PHX 76%
- SFO to BOS 78%
- SFO to DFW 75%
- SFO to IAH 85%
Live status: FAA delays and ground stops