Route
SJU → ORD
Luis Munoz Marin International Airport Chicago O'Hare International Airport
How punctual is this route?
- On-time arrivals
- 78.3%
- Less than 15 minutes late
- Cancelled
- 2.4%
- Of scheduled flights
- Average delay when late
- 78 min
- Flights arriving 15+ minutes late
- Flights tracked
- 1,383
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 45%
- Airline (crew, maintenance, cleaning) 28%
- Air traffic control & airport 21%
- Extreme weather 6%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 72.0% | 51 |
| October 2025 | 68.5% | 73 |
| November 2025 | 74.7% | 100 |
| December 2025 | 79.5% | 129 |
| January 2026 | 77.1% | 154 |
| February 2026 | 83.3% | 139 |
| March 2026 | 75.6% | 177 |
| April 2026 | 85.5% | 138 |
| May 2026 | 83.3% | 105 |
| June 2026 | 86.5% | 90 |
| July 2026 | 75.4% | 123 |
| August 2026 | 71.2% | 104 |
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 | 657 | 80.5% | 0.6% | 48 min |
| American Airlines | 426 | 77.3% | 2.1% | 105 min |
| NK | 227 | 77.8% | 7.9% | 86 min |
| Frontier Airlines | 73 | 65.2% | 2.7% | 119 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
UA2088
32% late · 365 flights
-
UA2089
4% late · 288 flights
-
AA3276
26% late · 118 flights
-
NK2208
23% late · 113 flights
-
AA2592
11% late · 75 flights
-
F93345
35% late · 73 flights
-
AA2845
31% late · 44 flights
-
AA1540
9% late · 37 flights
-
NK1480
33% late · 33 flights
-
NK587
19% late · 32 flights
-
NK2081
0% late · 30 flights
-
AA3013
15% late · 27 flights
-
AA528
33% late · 27 flights
-
AA439
20% late · 25 flights
-
AA1555
5% late · 21 flights
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