Route
EWR → SFO
Newark Liberty International Airport San Francisco International Airport
Alerts at EWR and SFO
How punctual is this route?
- On-time arrivals
- 67.9%
- Less than 15 minutes late
- Cancelled
- 2.3%
- Of scheduled flights
- Average delay when late
- 91 min
- Flights arriving 15+ minutes late
- Flights tracked
- 4,349
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 36%
- Air traffic control & airport 32%
- Late-arriving aircraft 28%
- Extreme weather 4%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 75.9% | 357 |
| October 2025 | 64.8% | 389 |
| November 2025 | 73.2% | 351 |
| December 2025 | 58.0% | 368 |
| January 2026 | 71.2% | 327 |
| February 2026 | 71.7% | 297 |
| March 2026 | 81.2% | 376 |
| April 2026 | 77.9% | 382 |
| May 2026 | 70.9% | 404 |
| June 2026 | 51.5% | 370 |
| July 2026 | 61.7% | 367 |
| August 2026 | 57.3% | 361 |
Source: U.S. DOT Bureau of Transportation Statistics on-time data, September 2025 – August 2026. Covers flights operated by reporting U.S. carriers. About our data
Airlines on this route
| Airline | Flights | On time | Cancelled | Avg. delay when late |
|---|---|---|---|---|
| United Airlines | 3,863 | 66.7% | 2.4% | 93 min |
| Alaska Airlines | 486 | 77.3% | 1.2% | 67 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
UA1777
28% late · 365 flights
-
UA2328
35% late · 365 flights
-
UA648
29% late · 365 flights
-
UA1343
36% late · 363 flights
-
UA2115
17% late · 362 flights
-
UA1227
31% late · 341 flights
-
UA1960
29% late · 339 flights
-
UA1340
40% late · 338 flights
-
UA1844
39% late · 326 flights
-
UA1558
50% late · 267 flights
-
AS293
25% late · 205 flights
-
AS373
22% late · 128 flights
-
UA2080
43% late · 111 flights
-
UA1593
47% late · 97 flights
-
UA538
25% late · 55 flights
-
AS595
6% late · 35 flights
-
UA2004
22% late · 32 flights
-
AS217
43% late · 28 flights
-
AS364
11% late · 28 flights
-
AS610
38% late · 26 flights
-
UA1429
38% late · 24 flights
-
UA1822
29% late · 24 flights
-
UA2074
50% late · 24 flights
-
AS344
14% late · 21 flights
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