Houston (IAH) to San Juan (SJU) flights
United Airlines flies nonstop from George Bush Intercontinental Airport to Luis Munoz Marin International Airport, with about 21 flights a week in July 2026. The 2,007-mile flight takes about 4h 23m gate to gate.
- Distance
- 2,007 mi · 3,230 km
- Flight time
- 4h 23m
- Airlines
- 1
- Seats filled
- 89%
Airlines flying IAH to SJU
| Airline | Flights a week | Aircraft | Passengers (12 months) | Flight time |
|---|---|---|---|---|
| United Airlines | 21 | Boeing 737 MAX 9, Boeing 737-900ER | 140,342 | 4h 23m |
| Spirit AirlinesCeased operations 2026-05-02 | n/a | Airbus A321, Airbus A320-100/200, Airbus A320neo | 9,280 | 4h 15m |
Airlines are the operating carrier: regional airlines such as SkyWest or Horizon often fly under a larger airline's brand.
IAH to SJU flight schedule
3 flight numbers flew this route in August 2026, 2 of them almost daily. The first usually leaves at 10:10am and the last at 11:56pm. 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) |
|---|---|---|---|---|
| UA 1192United Airlines | 10:10am | 3:42pm | 31 | 81% |
| UA 701United Airlines | 3:06pm | 8:38pm | 31 | 91% |
| UA 1497United Airlines | 11:56pm | 5:29am | 10 | 86% |
Is IAH to SJU on time?
From September 2025 to August 2026, 85% of 907 flights arrived within 15 minutes of schedule and 0.6% were cancelled. Flights leaving around 3pm were the most punctual (91%), those around 10am the least (81%). Most delay time was caused by the airline (crew, maintenance, cleaning, fuelling) (41%).
| Airline | Flights | On time | Average delay | Cancelled |
|---|---|---|---|---|
| United Airlines | 864 | 86% | 7 min | 0.3% |
| Spirit Airlines | 43 | 61% | 39 min | 4.7% |
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 |
|---|---|---|---|
| 10am to 11am | 365 | 81% | |
| 3pm to 4pm | 364 | 91% | |
| 11pm to 12am | 135 | 86% |
Flights by month
| Month | Flights | Flights, relative | Passengers |
|---|---|---|---|
| August 2025 | 93 | 15,308 | |
| September 2025 | 68 | 11,139 | |
| October 2025 | 70 | 11,435 | |
| November 2025 | 68 | 10,899 | |
| December 2025 | 91 | 15,477 | |
| January 2026 | 78 | 12,214 | |
| February 2026 | 67 | 10,432 | |
| March 2026 | 75 | 11,974 | |
| April 2026 | 60 | 9,080 | |
| May 2026 | 73 | 11,764 | |
| June 2026 | 90 | 14,519 | |
| July 2026 | 93 | 15,381 |
Related
Source: US Department of Transportation, T-100 Segment data, August 2025 to July 2026.