Route
EWR → SJU
Newark Liberty International Airport Luis Munoz Marin International Airport
How punctual is this route?
- On-time arrivals
- 69.9%
- Less than 15 minutes late
- Cancelled
- 3.0%
- Of scheduled flights
- Average delay when late
- 84 min
- Flights arriving 15+ minutes late
- Flights tracked
- 2,078
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 39%
- Late-arriving aircraft 34%
- Air traffic control & airport 23%
- Extreme weather 4%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 74.3% | 152 |
| October 2025 | 62.0% | 144 |
| November 2025 | 59.3% | 145 |
| December 2025 | 63.9% | 199 |
| January 2026 | 65.5% | 214 |
| February 2026 | 67.5% | 180 |
| March 2026 | 73.3% | 188 |
| April 2026 | 79.6% | 191 |
| May 2026 | 86.6% | 135 |
| June 2026 | 84.4% | 161 |
| July 2026 | 62.6% | 183 |
| August 2026 | 61.7% | 186 |
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 | 1,113 | 69.7% | 2.2% | 83 min |
| JetBlue Airways | 687 | 73.0% | 3.9% | 85 min |
| Frontier Airlines | 152 | 58.9% | 3.9% | 98 min |
| NK | 126 | 67.5% | 4.8% | 74 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
UA1556
23% late · 365 flights
-
UA2143
33% late · 365 flights
-
UA1543
36% late · 364 flights
-
B62389
39% late · 222 flights
-
B6389
24% late · 188 flights
-
B61889
24% late · 177 flights
-
F93573
38% late · 106 flights
-
NK455
31% late · 97 flights
-
B61089
14% late · 82 flights
-
F93112
48% late · 46 flights
-
NK787
47% late · 21 flights
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