Chicago (ORD) to San Juan (SJU) flights
United Airlines, American Airlines, Frontier Airlines fly nonstop from Chicago O'Hare International Airport to Luis Munoz Marin International Airport, with about 27 flights a week in July 2026. The 2,072-mile flight takes about 4h 40m gate to gate.
- Distance
- 2,072 mi · 3,335 km
- Flight time
- 4h 40m
- Airlines
- 3
- Seats filled
- 90%
Airlines flying ORD to SJU
| Airline | Flights a week | Aircraft | Passengers (12 months) | Flight time |
|---|---|---|---|---|
| United Airlines | 14 | Airbus A321, Boeing 737 MAX 9, Boeing 737-900ER | 120,432 | 4h 45m |
| American Airlines | 7 | Boeing 737-800, Boeing 737 MAX 8, Airbus A321 | 66,903 | 4h 36m |
| Frontier Airlines | 6 | Airbus A321 | 8,066 | 4h 50m |
| Spirit AirlinesCeased operations 2026-05-02 | n/a | Airbus A320neo, Airbus A320-100/200, Airbus A321 | 38,548 | 4h 31m |
Airlines are the operating carrier: regional airlines such as SkyWest or Horizon often fly under a larger airline's brand.
ORD to SJU flight schedule
5 flight numbers flew this route in August 2026, 3 of them almost daily. The first usually leaves at 12:44am and the last at 5:50pm. Times are local and can change; check with the airline before you book.
| Flight | Departs | Arrives | Days flown in August 2026 | On time (12 months) |
|---|---|---|---|---|
| F9 3346Frontier Airlines | 12:44am | 6:44am | 31 | 67% |
| UA 1996United Airlines | 8:55am | 2:44pm | 31 | 79% |
| UA 695United Airlines | 2:38pm | 8:34pm | 10 | 79% |
| AA 1865American Airlines | 5:20pm | 11:15pm | 27 | 56% |
| AA 3192American Airlines | 5:50pm | 11:48pm | 4 | 59% |
Is ORD to SJU on time?
From September 2025 to August 2026, 73% of 1,390 flights arrived within 15 minutes of schedule and 2.2% were cancelled. Flights leaving around 2pm were the most punctual (79%), those around 12pm the least (60%). Most delay time was caused by the airline (crew, maintenance, cleaning, fuelling) (36%).
| Airline | Flights | On time | Average delay | Cancelled |
|---|---|---|---|---|
| United Airlines | 657 | 79% | 12 min | 0.3% |
| American Airlines | 429 | 71% | 20 min | 1.6% |
| Spirit Airlines | 232 | 61% | 31 min | 8.2% |
| Frontier Airlines | 72 | 67% | 64 min | 4.2% |
Airlines as sold: flights operated by regional partners count under the airline on the ticket. Average delay is across all completed flights, early arrivals counted as zero.
On-time arrivals by departure time
| Scheduled departure | Flights | On time, relative | On time |
|---|---|---|---|
| 12am to 1am | 72 | 67% | |
| 5am to 6am | 35 | 68% | |
| 8am to 9am | 601 | 78% | |
| 12pm to 1pm | 116 | 60% | |
| 2pm to 3pm | 288 | 79% | |
| 3pm to 4pm | 40 | 74% | |
| 5pm to 6pm | 49 | 58% | |
| 6pm to 7pm | 50 | 58% | |
| 8pm to 9pm | 34 | 17% | |
| 10pm to 11pm | 64 | 79% |
Flights by month
| Month | Flights | Flights, relative | Passengers |
|---|---|---|---|
| August 2025 | 110 | 18,474 | |
| September 2025 | 51 | 8,825 | |
| October 2025 | 74 | 12,240 | |
| November 2025 | 99 | 16,784 | |
| December 2025 | 131 | 22,543 | |
| January 2026 | 141 | 23,367 | |
| February 2026 | 140 | 23,241 | |
| March 2026 | 171 | 29,797 | |
| April 2026 | 136 | 21,684 | |
| May 2026 | 104 | 19,156 | |
| June 2026 | 91 | 15,947 | |
| July 2026 | 118 | 21,891 |
Related
Source: US Department of Transportation, T-100 Segment data, August 2025 to July 2026.