Route
JFK → SJU
John F. Kennedy International Airport Luis Munoz Marin International Airport
How punctual is this route?
- On-time arrivals
- 70.2%
- Less than 15 minutes late
- Cancelled
- 3.6%
- Of scheduled flights
- Average delay when late
- 81 min
- Flights arriving 15+ minutes late
- Flights tracked
- 3,554
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 40%
- Airline (crew, maintenance, cleaning) 34%
- Air traffic control & airport 24%
- Extreme weather 2%
- Security 1%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 72.7% | 245 |
| October 2025 | 62.7% | 271 |
| November 2025 | 74.5% | 297 |
| December 2025 | 68.3% | 350 |
| January 2026 | 66.1% | 309 |
| February 2026 | 68.0% | 294 |
| March 2026 | 75.6% | 302 |
| April 2026 | 79.3% | 310 |
| May 2026 | 82.2% | 254 |
| June 2026 | 78.9% | 289 |
| July 2026 | 51.9% | 310 |
| August 2026 | 62.9% | 323 |
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 |
|---|---|---|---|---|
| JetBlue Airways | 2,245 | 67.7% | 4.1% | 81 min |
| Delta Air Lines | 1,104 | 77.4% | 2.3% | 65 min |
| Frontier Airlines | 205 | 58.2% | 4.4% | 127 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
DL1961
16% late · 364 flights
-
DL1859
33% late · 359 flights
-
B6503
28% late · 357 flights
-
DL1966
20% late · 304 flights
-
B6803
38% late · 289 flights
-
B61603
24% late · 281 flights
-
B6403
24% late · 235 flights
-
B6703
36% late · 231 flights
-
B61003
36% late · 197 flights
-
B61803
19% late · 169 flights
-
B62903
41% late · 157 flights
-
F93545
41% late · 149 flights
-
B61903
31% late · 146 flights
-
B6303
61% late · 119 flights
-
DL1877
13% late · 61 flights
-
F93547
45% late · 56 flights
-
B6903
37% late · 46 flights
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