Houston (IAH) – San Juan (SJU)
- Distance
- 3,231 km
- 2,007 mi · 1,744 nm
- Flight time
- 4 h 22 min / 4 h 47 min
- Average gate to gate: IAH → SJU / back
- Time difference
- 2 h / 1 h
- January / July
- CO2 per passenger
- 406 kg
- One way, economy, incl. RF (240 kg CO2 only)
- Passengers / year
- 302,569
- Aug 2025 – Jul 2026 · −9.9%
- Flights / week
- 36
- Both directions, average
- Seats filled
- 90%
- 337,195 seats a year
- Airlines nonstop
- 2
- UA, NK
Traffic: U.S. DOT, Bureau of Transportation Statistics, T-100 Segment (all carriers, scheduled service), Aug 2025 – Jul 2026. Distance: WGS-84 ellipsoid. CO2: UK DESNZ 2026 factors. Sources
The way there
- Heading from IAH
- 107°
- Heading from SJU
- 299°
- Halfway point
- 24.93, -79.99
- Great-circle km
- 3,228 km (sphere, for EU261)
- In the air IAH → SJU
- 3 h 55 min
- In the air SJU → IAH
- 4 h 21 min
- Clocks
- 2 h in January, 1 h in July
The estimate for a route without real times is 4 h 35 min; how it is worked out is on Sources.
Show as a table
| Month | Passengers |
|---|---|
| Aug 2025 | 31,954 |
| Sep 2025 | 22,966 |
| Oct 2025 | 22,998 |
| Nov 2025 | 21,660 |
| Dec 2025 | 29,375 |
| Jan 2026 | 25,589 |
| Feb 2026 | 21,438 |
| Mar 2026 | 24,514 |
| Apr 2026 | 18,597 |
| May 2026 | 23,395 |
| Jun 2026 | 28,993 |
| Jul 2026 | 31,090 |
Show as a table
| Month | Flights |
|---|---|
| Aug 2025 | 188 |
| Sep 2025 | 136 |
| Oct 2025 | 142 |
| Nov 2025 | 137 |
| Dec 2025 | 182 |
| Jan 2026 | 157 |
| Feb 2026 | 133 |
| Mar 2026 | 151 |
| Apr 2026 | 121 |
| May 2026 | 145 |
| Jun 2026 | 180 |
| Jul 2026 | 186 |
Airlines flying IAH–SJU nonstop
| Airline | Flights / week | Share of passengers |
|---|---|---|
| UAUnited Air Lines | 34 | 94% |
| NKSpirit Air Lines | 2.2 | 6% |
Both directions, Aug 2025 – Jul 2026. Airlines with at least one flight a month. U.S. DOT, Bureau of Transportation Statistics, T-100 Segment (all carriers, scheduled service). Sources
Aircraft on this route
- Boeing B737 Max 900 · 1,692 flights
- Airbus Industrie A321-200n · 89 flights
- Boeing 737-900ER · 48 flights
- Airbus Industrie A320-100/200 · 15 flights
- Airbus Industrie A321Neoxlr · 7 flights
- Boeing B737 Max 800 · 4 flights
- Airbus Industrie A320-200n · 3 flights
Also carried: 274 tonnes of freight and 374 tonnes of mail a year (passenger and cargo flights).
Punctuality
- On time
- 85.2%
- Arrived within 15 min of schedule
- Average delay
- 9 min
- Late arrivals count, early ones as 0
- Cancelled
- 0.5%
- Flights counted
- 1,858
- Aug 2025 – Jul 2026
| Airline | On time | Average delay |
|---|---|---|
| UAUnited Air Lines | 86.6% | 7 min |
| NKSpirit Air Lines | 63.1% | 29 min |
Delay minutes by cause: airline 30% · aircraft arriving late 40% · air traffic system 28% · weather 2% · security 0%.
Both directions, Aug 2025 – Jul 2026. BTS Reporting Carrier On-Time Performance (US domestic flights of the larger US airlines). Sources
Delay compensation (EU261 / UK261)
Measured by great-circle distance: 3,228 km.
Neither EU261 nor UK261 covers this route: it neither starts nor ends in the EU, EEA, Switzerland or the UK. Other countries have their own rules (for example Canada's APPR or Brazil's ANAC rules).
Also owed for a cancellation with less than 14 days' notice or denied boarding. Not owed for extraordinary circumstances. On a connection, the distance to the final destination counts. From 23 October 2027 the EU's Regulation 2026/2202 applies; it keeps these amounts (what changes in 2027). Information, not legal advice.
Every airport pair between Houston and San Juan
Kilometres. Linked numbers have a page of their own. All Houston airports · All San Juan airports
More routes from IAH
| Route | Distance | Passengers / year |
|---|---|---|
| IAH → ORD | 1,489 km | 1,711,056 |
| IAH → DEN | 1,387 km | 1,641,444 |
| IAH → LAX | 2,219 km | 1,544,652 |
| IAH → ATL | 1,109 km | 1,430,755 |
| IAH → DFW | 361 km | 1,257,452 |
| IAH → SFO | 2,632 km | 1,223,236 |
| IAH → MCO | 1,375 km | 1,147,728 |
| IAH → EWR | 2,252 km | 1,135,261 |
| IAH → LGA | 2,279 km | 1,049,227 |
| IAH → LAS | 1,966 km | 1,028,809 |