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3,228 km · International

George Bush Intercontinental (IAH) – Luis Munoz Marin (SJU)

In July 2026, 186 flights operated between George Bush Intercontinental and Luis Munoz Marin (both directions), and 89.8% left on time, according to the US BTS.

Official · July 2026 according to the US BTS only airlines required to report on-time data to the US DOT

Flights per month

Only complete months are shown. A month appears once the source has published every day of it.

The most recent periods19 periods
PeriodFlights operated 2025Flights operated 2026Change vs last year
January187153▼ 18.2%
February168133▼ 20.8%
March197150▼ 23.9%
April154120▼ 22.1%
May165145▼ 12.1%
June206180▼ 12.6%
July221186▼ 15.8%
August187––
September136––
October140–in progress
November136––
December182––
Year to date (Jan–Jul)1,2981,067▼ 17.8%

On-time departures by month

Departures within 15 minutes of schedule.

The most recent periods19 periods
PeriodOn-time departures 2025On-time departures 2026Change vs last year
January85.6%88.9%▲ 3.9%
February83.9%91.0%▲ 8.5%
March83.2%83.3%▲ 0.1%
April88.3%93.3%▲ 5.7%
May83.0%89.7%▲ 8.1%
June82.0%86.1%▲ 5.0%
July81.9%89.8%▲ 9.6%
August84.5%––
September90.4%––
October83.6%–in progress
November76.5%––
December83.0%––
Year-to-date average (Jan–Jul)84.0%88.9%▲ 5.8%

Cancelled flights by month

The most recent periods19 periods
PeriodCancelled flights 2025Cancelled flights 2026Change vs last year
January880.0%
February01–
March00–
April00–
May00–
June20▼ 100.0%
July10▼ 100.0%
August0––
September0––
October0–in progress
November0––
December1––
Year to date (Jan–Jul)119▼ 18.2%

Airlines on this route

  1. United Airlines 87.4%
  2. Spirit Airlines 12.6%

Oct 1, 2024 – Jul 31, 2026

By direction

IAH → SJU

Scheduled flights
1,809
Flights operated
1,799
Cancelled
10 · 0.6%
On-time departures
84.8%

SJU → IAH

Scheduled flights
1,809
Flights operated
1,796
Cancelled
13 · 0.7%
On-time departures
86.6%

IAH → SJU and SJU → IAH counted separately.

Airlines on this route

Oct 1, 2024 – Jul 31, 2026
AirlineScheduled flights Share On-time departures Cancelled
United Airlines UA 3,163 87.4% 86.6% 18
Spirit Airlines NK 455 12.6% 78.9% 5

Shares are of scheduled flights in the period shown. Codeshare flights are counted once, under the operating airline.

Flight timing & delays

Historical departures, grouped by the scheduled local time at the departure airport. These are recorded outcomes, not a forecast for your flight.

Times are local to the departure airport of each flight; both directions are combined.

US domestic sectors recorded by BTS

Source: the US BTS · Oct 12, 2024 → Jul 31, 2026

Lowest average delay07:00–08:000.4min · 655 recorded · 650 measured
Gap to highest-delay hour11.0min07:00 ↔ 15:00
Recorded flights3,618IAH–SJU

Departure hour

On-time departures Partial coverage: only airlines that report on-time data to the US DOT
00:00 · Fewer than 200 measured departures · 1 recorded · 1 measured · Source: the US BTS 01:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 02:00 · Fewer than 200 measured departures · 160 recorded · 160 measured · Source: the US BTS 03:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 04:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 05:00 · Fewer than 200 measured departures · 9 recorded · 9 measured · Source: the US BTS 06:00 · Fewer than 200 measured departures · 83 recorded · 82 measured · Source: the US BTS 07:00 · 94.0% · 655 recorded · 650 measured · Source: the US BTS 08:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 09:00 · Fewer than 200 measured departures · 61 recorded · 60 measured · Source: the US BTS 10:00 · 88.4% · 744 recorded · 741 measured · Source: the US BTS 11:00 · Fewer than 200 measured departures · 52 recorded · 50 measured · Source: the US BTS 12:00 · Fewer than 200 measured departures · 8 recorded · 8 measured · Source: the US BTS 13:00 · Fewer than 200 measured departures · 48 recorded · 48 measured · Source: the US BTS 14:00 · 82.3% · 471 recorded · 470 measured · Source: the US BTS 15:00 · 80.5% · 918 recorded · 912 measured · Source: the US BTS 16:00 · Fewer than 200 measured departures · 74 recorded · 73 measured · Source: the US BTS 17:00 · Fewer than 200 measured departures · 12 recorded · 12 measured · Source: the US BTS 18:00 · Fewer than 200 measured departures · 4 recorded · 4 measured · Source: the US BTS 19:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 20:00 · Fewer than 200 measured departures · 47 recorded · 47 measured · Source: the US BTS 21:00 · Fewer than 200 measured departures · 4 recorded · 4 measured · Source: the US BTS 22:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 23:00 · 85.2% · 267 recorded · 264 measured · Source: the US BTS

Hover, tap or focus a point to see its value, sample and source.

Average departure delay Partial coverage: only airlines that report on-time data to the US DOT
00:00 · Fewer than 200 measured departures · 1 recorded · 1 measured · Source: the US BTS 01:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 02:00 · Fewer than 200 measured departures · 160 recorded · 160 measured · Source: the US BTS 03:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 04:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 05:00 · Fewer than 200 measured departures · 9 recorded · 9 measured · Source: the US BTS 06:00 · Fewer than 200 measured departures · 83 recorded · 82 measured · Source: the US BTS 07:00 · 0.4 min · 655 recorded · 650 measured · Source: the US BTS 08:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 09:00 · Fewer than 200 measured departures · 61 recorded · 60 measured · Source: the US BTS 10:00 · 5.4 min · 744 recorded · 741 measured · Source: the US BTS 11:00 · Fewer than 200 measured departures · 52 recorded · 50 measured · Source: the US BTS 12:00 · Fewer than 200 measured departures · 8 recorded · 8 measured · Source: the US BTS 13:00 · Fewer than 200 measured departures · 48 recorded · 48 measured · Source: the US BTS 14:00 · 6.1 min · 471 recorded · 470 measured · Source: the US BTS 15:00 · 11.3 min · 918 recorded · 912 measured · Source: the US BTS 16:00 · Fewer than 200 measured departures · 74 recorded · 73 measured · Source: the US BTS 17:00 · Fewer than 200 measured departures · 12 recorded · 12 measured · Source: the US BTS 18:00 · Fewer than 200 measured departures · 4 recorded · 4 measured · Source: the US BTS 19:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 20:00 · Fewer than 200 measured departures · 47 recorded · 47 measured · Source: the US BTS 21:00 · Fewer than 200 measured departures · 4 recorded · 4 measured · Source: the US BTS 22:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 23:00 · 7.2 min · 267 recorded · 264 measured · Source: the US BTS

Hover, tap or focus a point to see its value, sample and source.

Recorded flights Partial coverage: only airlines that report on-time data to the US DOT
00:00 · 1 · 1 recorded · 1 measured · Source: the US BTS 01:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 02:00 · 160 · 160 recorded · 160 measured · Source: the US BTS 03:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 04:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 05:00 · 9 · 9 recorded · 9 measured · Source: the US BTS 06:00 · 83 · 83 recorded · 82 measured · Source: the US BTS 07:00 · 655 · 655 recorded · 650 measured · Source: the US BTS 08:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 09:00 · 61 · 61 recorded · 60 measured · Source: the US BTS 10:00 · 744 · 744 recorded · 741 measured · Source: the US BTS 11:00 · 52 · 52 recorded · 50 measured · Source: the US BTS 12:00 · 8 · 8 recorded · 8 measured · Source: the US BTS 13:00 · 48 · 48 recorded · 48 measured · Source: the US BTS 14:00 · 471 · 471 recorded · 470 measured · Source: the US BTS 15:00 · 918 · 918 recorded · 912 measured · Source: the US BTS 16:00 · 74 · 74 recorded · 73 measured · Source: the US BTS 17:00 · 12 · 12 recorded · 12 measured · Source: the US BTS 18:00 · 4 · 4 recorded · 4 measured · Source: the US BTS 19:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 20:00 · 47 · 47 recorded · 47 measured · Source: the US BTS 21:00 · 4 · 4 recorded · 4 measured · Source: the US BTS 22:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 23:00 · 267 · 267 recorded · 264 measured · Source: the US BTS

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View the figures
Departure hourOn-time departuresAverage departure delayWith departure timeRecorded flights
00:00Fewer than 200 measured departures—11
01:00No observations———
02:00Fewer than 200 measured departures—160160
03:00No observations———
04:00No observations———
05:00Fewer than 200 measured departures—99
06:00Fewer than 200 measured departures—8283
07:0094.0%0.4 min650655
08:00No observations———
09:00Fewer than 200 measured departures—6061
10:0088.4%5.4 min741744
11:00Fewer than 200 measured departures—5052
12:00Fewer than 200 measured departures—88
13:00Fewer than 200 measured departures—4848
14:0082.3%6.1 min470471
15:0080.5%11.3 min912918
16:00Fewer than 200 measured departures—7374
17:00Fewer than 200 measured departures—1212
18:00Fewer than 200 measured departures—44
19:00No observations———
20:00Fewer than 200 measured departures—4747
21:00Fewer than 200 measured departures—44
22:00No observations———
23:0085.2%7.2 min264267

Day of week

On-time departures Partial coverage: only airlines that report on-time data to the US DOT
Monday · 86.8% · 504 recorded · 501 measured · Source: the US BTS Tuesday · 88.5% · 480 recorded · 476 measured · Source: the US BTS Wednesday · 88.4% · 468 recorded · 465 measured · Source: the US BTS Thursday · 82.8% · 516 recorded · 516 measured · Source: the US BTS Friday · 88.0% · 508 recorded · 507 measured · Source: the US BTS Saturday · 83.0% · 574 recorded · 566 measured · Source: the US BTS Sunday · 83.3% · 568 recorded · 564 measured · Source: the US BTS

Hover, tap or focus a point to see its value, sample and source.

Average departure delay Partial coverage: only airlines that report on-time data to the US DOT
Monday · 5.8 min · 504 recorded · 501 measured · Source: the US BTS Tuesday · 5.3 min · 480 recorded · 476 measured · Source: the US BTS Wednesday · 4.0 min · 468 recorded · 465 measured · Source: the US BTS Thursday · 7.7 min · 516 recorded · 516 measured · Source: the US BTS Friday · 4.3 min · 508 recorded · 507 measured · Source: the US BTS Saturday · 8.4 min · 574 recorded · 566 measured · Source: the US BTS Sunday · 11.0 min · 568 recorded · 564 measured · Source: the US BTS

Hover, tap or focus a point to see its value, sample and source.

Recorded flights Partial coverage: only airlines that report on-time data to the US DOT
Monday · 504 · 504 recorded · 501 measured · Source: the US BTS Tuesday · 480 · 480 recorded · 476 measured · Source: the US BTS Wednesday · 468 · 468 recorded · 465 measured · Source: the US BTS Thursday · 516 · 516 recorded · 516 measured · Source: the US BTS Friday · 508 · 508 recorded · 507 measured · Source: the US BTS Saturday · 574 · 574 recorded · 566 measured · Source: the US BTS Sunday · 568 · 568 recorded · 564 measured · Source: the US BTS

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View the figures
Day of weekOn-time departuresAverage departure delayWith departure timeRecorded flights
Monday86.8%5.8 min501504
Tuesday88.5%5.3 min476480
Wednesday88.4%4.0 min465468
Thursday82.8%7.7 min516516
Friday88.0%4.3 min507508
Saturday83.0%8.4 min566574
Sunday83.3%11.0 min564568

Month of year

Months combine the same calendar month across the years shown; this is a seasonal pattern, not a monthly time series.

On-time departures Partial coverage: only airlines that report on-time data to the US DOT
Jan · 87.1% · 356 recorded · 340 measured · Source: the US BTS Feb · 87.0% · 302 recorded · 301 measured · Source: the US BTS Mar · 83.3% · 347 recorded · 347 measured · Source: the US BTS Apr · 90.5% · 274 recorded · 274 measured · Source: the US BTS May · 86.1% · 310 recorded · 310 measured · Source: the US BTS Jun · 83.9% · 388 recorded · 386 measured · Source: the US BTS Jul · 85.5% · 408 recorded · 407 measured · Source: the US BTS Aug · Fewer than 200 measured departures · 187 recorded · 187 measured · Source: the US BTS Sep · Fewer than 200 measured departures · 136 recorded · 136 measured · Source: the US BTS Oct · 84.3% · 242 recorded · 242 measured · Source: the US BTS Nov · 82.9% · 292 recorded · 292 measured · Source: the US BTS Dec · 85.5% · 376 recorded · 373 measured · Source: the US BTS

Hover, tap or focus a point to see its value, sample and source.

Average departure delay Partial coverage: only airlines that report on-time data to the US DOT
Jan · 4.8 min · 356 recorded · 340 measured · Source: the US BTS Feb · 3.9 min · 302 recorded · 301 measured · Source: the US BTS Mar · 7.0 min · 347 recorded · 347 measured · Source: the US BTS Apr · 4.6 min · 274 recorded · 274 measured · Source: the US BTS May · 5.1 min · 310 recorded · 310 measured · Source: the US BTS Jun · 8.8 min · 388 recorded · 386 measured · Source: the US BTS Jul · 9.0 min · 408 recorded · 407 measured · Source: the US BTS Aug · Fewer than 200 measured departures · 187 recorded · 187 measured · Source: the US BTS Sep · Fewer than 200 measured departures · 136 recorded · 136 measured · Source: the US BTS Oct · 7.5 min · 242 recorded · 242 measured · Source: the US BTS Nov · 9.0 min · 292 recorded · 292 measured · Source: the US BTS Dec · 8.3 min · 376 recorded · 373 measured · Source: the US BTS

Hover, tap or focus a point to see its value, sample and source.

Recorded flights Partial coverage: only airlines that report on-time data to the US DOT
Jan · 356 · 356 recorded · 340 measured · Source: the US BTS Feb · 302 · 302 recorded · 301 measured · Source: the US BTS Mar · 347 · 347 recorded · 347 measured · Source: the US BTS Apr · 274 · 274 recorded · 274 measured · Source: the US BTS May · 310 · 310 recorded · 310 measured · Source: the US BTS Jun · 388 · 388 recorded · 386 measured · Source: the US BTS Jul · 408 · 408 recorded · 407 measured · Source: the US BTS Aug · 187 · 187 recorded · 187 measured · Source: the US BTS Sep · 136 · 136 recorded · 136 measured · Source: the US BTS Oct · 242 · 242 recorded · 242 measured · Source: the US BTS Nov · 292 · 292 recorded · 292 measured · Source: the US BTS Dec · 376 · 376 recorded · 373 measured · Source: the US BTS

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View the figures
Month of yearOn-time departuresAverage departure delayWith departure timeRecorded flights
Jan87.1%4.8 min340356
Feb87.0%3.9 min301302
Mar83.3%7.0 min347347
Apr90.5%4.6 min274274
May86.1%5.1 min310310
Jun83.9%8.8 min386388
Jul85.5%9.0 min407408
AugFewer than 200 measured departures—187187
SepFewer than 200 measured departures—136136
Oct84.3%7.5 min242242
Nov82.9%9.0 min292292
Dec85.5%8.3 min373376

Delay and on-time rates need at least 200 measured departures per bucket. Smaller samples remain visible in the flight-count chart. An empty slot means no observations, not zero flights.

Recorded outcomes

  • On time 85.1% 3,080
  • Delayed >15 min 14.2% 515
  • Cancelled 0.6% 23
  • Missing departure time 0.0% 0

All recorded flights with a known scheduled local time, counted once. Missing actual times are shown separately.

On time means departing no more than 15 minutes after schedule. Cancelled flights and flights missing departure times are excluded from the on-time rate and average delay.

Flight numbers on this route

12
12 of 12
Flight numbersBy direction DeparturesOn time
UA1192 IAH → SJU 658 88.0%
UA668 SJU → IAH 658 78.6%
UA1644 SJU → IAH 657 94.6%
UA701 IAH → SJU 657 83.4%
UA1497 IAH → SJU 267 85.2%
UA2495 SJU → IAH 266 93.2%
NK1151 IAH → SJU 59 91.5%
NK1152 SJU → IAH 58 89.7%
NK794 IAH → SJU 42 88.1%
NK795 SJU → IAH 42 85.7%
NK1631 IAH → SJU 31 80.0%
NK1632 SJU → IAH 31 80.0%

Flight numbers are the codes sold on tickets. On shared flights one aircraft can carry several of them. Only numbers with at least 30 flights have a page.

Monthly figures
PeriodFlights operated Change vs last yearCancelled On-time departures
July 2026 186 −15.8% 0 89.8%
June 2026 180 −12.6% 0 86.1%
May 2026 145 −12.1% 0 89.7%
April 2026 120 −22.1% 0 93.3%
March 2026 150 −23.9% 0 83.3%
February 2026 133 −20.8% 1 91.0%
January 2026 153 −18.2% 8 88.9%
December 2025 182 −4.7% 1 83.0%
November 2025 136 −12.8% 0 76.5%
October 2025 140 +37.3% 0 83.6%
September 2025 136 0 90.4%
August 2025 187 0 84.5%
July 2025 221 1 81.9%
June 2025 206 2 82.0%
May 2025 165 0 83.0%
April 2025 154 0 88.3%
March 2025 197 0 83.2%
February 2025 168 0 83.9%
January 2025 187 8 85.6%
December 2024 191 2 88.0%
November 2024 156 0 88.5%
October 2024 102 0 85.3%

How to read this chart

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