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1,963 km · Domestic

George Bush Intercontinental (IAH) – Harry Reid (LAS)

In July 2026, 519 flights operated between George Bush Intercontinental and Harry Reid (both directions), and 76.7% 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
January598559▼ 6.5%
February594576▼ 3.0%
March669630▼ 5.8%
April635581▼ 8.5%
May621524▼ 15.6%
June569515▼ 9.5%
July570519▼ 8.9%
August564––
September510––
October584–in progress
November623––
December616––
Year to date (Jan–Jul)4,2563,904▼ 8.3%

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
January81.3%88.6%▲ 9.0%
February88.4%88.9%▲ 0.6%
March87.3%81.6%▼ 6.5%
April87.1%81.8%▼ 6.1%
May78.4%79.8%▲ 1.8%
June72.9%76.9%▲ 5.5%
July77.9%76.7%▼ 1.5%
August80.9%––
September85.9%––
October85.8%–in progress
November82.2%––
December89.4%––
Year-to-date average (Jan–Jul)81.9%82.0%▲ 0.2%

Cancelled flights by month

The most recent periods19 periods
PeriodCancelled flights 2025Cancelled flights 2026Change vs last year
January265▼ 80.8%
February07–
March316▲ 433.3%
April07–
May93▼ 66.7%
June97▼ 22.2%
July89▲ 12.5%
August7––
September0––
October0–in progress
November0––
December0––
Year to date (Jan–Jul)5554▼ 1.8%

Airlines on this route

  1. United Airlines 72.7%
  2. Spirit Airlines 18.2%
  3. Frontier Airlines 9.1%

Oct 1, 2024 – Jul 31, 2026

By direction

IAH → LAS

Scheduled flights
6,529
Flights operated
6,472
Cancelled
57 · 0.9%
On-time departures
80.4%

LAS → IAH

Scheduled flights
6,528
Flights operated
6,468
Cancelled
60 · 0.9%
On-time departures
86.0%

IAH → LAS and LAS → IAH counted separately.

Airlines on this route

Oct 1, 2024 – Jul 31, 2026
AirlineScheduled flights Share On-time departures Cancelled
United Airlines UA 9,492 72.7% 85.0% 59
Spirit Airlines NK 2,373 18.2% 80.5% 34
Frontier Airlines F9 1,192 9.1% 74.5% 24

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 delay06:00–07:000.8min · 940 recorded · 932 measured
Gap to highest-delay hour25.1min06:00 ↔ 19:00
Recorded flights13,057IAH–LAS

Departure hour

On-time departures Partial coverage: only airlines that report on-time data to the US DOT
00:00 · 87.6% · 830 recorded · 823 measured · Source: the US BTS 01:00 · Fewer than 200 measured departures · 69 recorded · 63 measured · Source: the US BTS 02:00 · No observations · 0 recorded · 0 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 · 37 recorded · 37 measured · Source: the US BTS 06:00 · 92.6% · 940 recorded · 932 measured · Source: the US BTS 07:00 · 91.8% · 842 recorded · 836 measured · Source: the US BTS 08:00 · 92.5% · 759 recorded · 747 measured · Source: the US BTS 09:00 · 89.0% · 842 recorded · 837 measured · Source: the US BTS 10:00 · 87.3% · 918 recorded · 913 measured · Source: the US BTS 11:00 · 85.4% · 371 recorded · 370 measured · Source: the US BTS 12:00 · 84.4% · 1,161 recorded · 1,154 measured · Source: the US BTS 13:00 · 80.1% · 473 recorded · 467 measured · Source: the US BTS 14:00 · 79.4% · 1,140 recorded · 1,135 measured · Source: the US BTS 15:00 · 82.0% · 758 recorded · 754 measured · Source: the US BTS 16:00 · 81.5% · 775 recorded · 771 measured · Source: the US BTS 17:00 · 75.0% · 323 recorded · 320 measured · Source: the US BTS 18:00 · 76.8% · 1,035 recorded · 1,027 measured · Source: the US BTS 19:00 · 67.5% · 254 recorded · 252 measured · Source: the US BTS 20:00 · 68.6% · 719 recorded · 708 measured · Source: the US BTS 21:00 · 74.3% · 468 recorded · 459 measured · Source: the US BTS 22:00 · Fewer than 200 measured departures · 204 recorded · 199 measured · Source: the US BTS 23:00 · Fewer than 200 measured departures · 139 recorded · 136 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 · 4.5 min · 830 recorded · 823 measured · Source: the US BTS 01:00 · Fewer than 200 measured departures · 69 recorded · 63 measured · Source: the US BTS 02:00 · No observations · 0 recorded · 0 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 · 37 recorded · 37 measured · Source: the US BTS 06:00 · 0.8 min · 940 recorded · 932 measured · Source: the US BTS 07:00 · 2.3 min · 842 recorded · 836 measured · Source: the US BTS 08:00 · 4.4 min · 759 recorded · 747 measured · Source: the US BTS 09:00 · 5.5 min · 842 recorded · 837 measured · Source: the US BTS 10:00 · 6.5 min · 918 recorded · 913 measured · Source: the US BTS 11:00 · 8.2 min · 371 recorded · 370 measured · Source: the US BTS 12:00 · 9.1 min · 1,161 recorded · 1,154 measured · Source: the US BTS 13:00 · 9.7 min · 473 recorded · 467 measured · Source: the US BTS 14:00 · 13.5 min · 1,140 recorded · 1,135 measured · Source: the US BTS 15:00 · 10.2 min · 758 recorded · 754 measured · Source: the US BTS 16:00 · 10.3 min · 775 recorded · 771 measured · Source: the US BTS 17:00 · 13.7 min · 323 recorded · 320 measured · Source: the US BTS 18:00 · 13.9 min · 1,035 recorded · 1,027 measured · Source: the US BTS 19:00 · 25.9 min · 254 recorded · 252 measured · Source: the US BTS 20:00 · 21.7 min · 719 recorded · 708 measured · Source: the US BTS 21:00 · 17.3 min · 468 recorded · 459 measured · Source: the US BTS 22:00 · Fewer than 200 measured departures · 204 recorded · 199 measured · Source: the US BTS 23:00 · Fewer than 200 measured departures · 139 recorded · 136 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 · 830 · 830 recorded · 823 measured · Source: the US BTS 01:00 · 69 · 69 recorded · 63 measured · Source: the US BTS 02:00 · No observations · 0 recorded · 0 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 · 37 · 37 recorded · 37 measured · Source: the US BTS 06:00 · 940 · 940 recorded · 932 measured · Source: the US BTS 07:00 · 842 · 842 recorded · 836 measured · Source: the US BTS 08:00 · 759 · 759 recorded · 747 measured · Source: the US BTS 09:00 · 842 · 842 recorded · 837 measured · Source: the US BTS 10:00 · 918 · 918 recorded · 913 measured · Source: the US BTS 11:00 · 371 · 371 recorded · 370 measured · Source: the US BTS 12:00 · 1,161 · 1,161 recorded · 1,154 measured · Source: the US BTS 13:00 · 473 · 473 recorded · 467 measured · Source: the US BTS 14:00 · 1,140 · 1,140 recorded · 1,135 measured · Source: the US BTS 15:00 · 758 · 758 recorded · 754 measured · Source: the US BTS 16:00 · 775 · 775 recorded · 771 measured · Source: the US BTS 17:00 · 323 · 323 recorded · 320 measured · Source: the US BTS 18:00 · 1,035 · 1,035 recorded · 1,027 measured · Source: the US BTS 19:00 · 254 · 254 recorded · 252 measured · Source: the US BTS 20:00 · 719 · 719 recorded · 708 measured · Source: the US BTS 21:00 · 468 · 468 recorded · 459 measured · Source: the US BTS 22:00 · 204 · 204 recorded · 199 measured · Source: the US BTS 23:00 · 139 · 139 recorded · 136 measured · Source: the US BTS

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View the figures
Departure hourOn-time departuresAverage departure delayWith departure timeRecorded flights
00:0087.6%4.5 min823830
01:00Fewer than 200 measured departures—6369
02:00No observations———
03:00No observations———
04:00No observations———
05:00Fewer than 200 measured departures—3737
06:0092.6%0.8 min932940
07:0091.8%2.3 min836842
08:0092.5%4.4 min747759
09:0089.0%5.5 min837842
10:0087.3%6.5 min913918
11:0085.4%8.2 min370371
12:0084.4%9.1 min1,1541,161
13:0080.1%9.7 min467473
14:0079.4%13.5 min1,1351,140
15:0082.0%10.2 min754758
16:0081.5%10.3 min771775
17:0075.0%13.7 min320323
18:0076.8%13.9 min1,0271,035
19:0067.5%25.9 min252254
20:0068.6%21.7 min708719
21:0074.3%17.3 min459468
22:00Fewer than 200 measured departures—199204
23:00Fewer than 200 measured departures—136139

Day of week

On-time departures Partial coverage: only airlines that report on-time data to the US DOT
Monday · 80.7% · 1,988 recorded · 1,964 measured · Source: the US BTS Tuesday · 86.8% · 1,617 recorded · 1,594 measured · Source: the US BTS Wednesday · 87.8% · 1,708 recorded · 1,699 measured · Source: the US BTS Thursday · 81.5% · 1,946 recorded · 1,941 measured · Source: the US BTS Friday · 81.0% · 1,986 recorded · 1,961 measured · Source: the US BTS Saturday · 84.8% · 1,813 recorded · 1,804 measured · Source: the US BTS Sunday · 81.4% · 1,999 recorded · 1,977 measured · Source: the US BTS

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Average departure delay Partial coverage: only airlines that report on-time data to the US DOT
Monday · 13.7 min · 1,988 recorded · 1,964 measured · Source: the US BTS Tuesday · 6.3 min · 1,617 recorded · 1,594 measured · Source: the US BTS Wednesday · 5.2 min · 1,708 recorded · 1,699 measured · Source: the US BTS Thursday · 11.3 min · 1,946 recorded · 1,941 measured · Source: the US BTS Friday · 11.2 min · 1,986 recorded · 1,961 measured · Source: the US BTS Saturday · 6.9 min · 1,813 recorded · 1,804 measured · Source: the US BTS Sunday · 11.8 min · 1,999 recorded · 1,977 measured · Source: the US BTS

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Recorded flights Partial coverage: only airlines that report on-time data to the US DOT
Monday · 1,988 · 1,988 recorded · 1,964 measured · Source: the US BTS Tuesday · 1,617 · 1,617 recorded · 1,594 measured · Source: the US BTS Wednesday · 1,708 · 1,708 recorded · 1,699 measured · Source: the US BTS Thursday · 1,946 · 1,946 recorded · 1,941 measured · Source: the US BTS Friday · 1,986 · 1,986 recorded · 1,961 measured · Source: the US BTS Saturday · 1,813 · 1,813 recorded · 1,804 measured · Source: the US BTS Sunday · 1,999 · 1,999 recorded · 1,977 measured · Source: the US BTS

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View the figures
Day of weekOn-time departuresAverage departure delayWith departure timeRecorded flights
Monday80.7%13.7 min1,9641,988
Tuesday86.8%6.3 min1,5941,617
Wednesday87.8%5.2 min1,6991,708
Thursday81.5%11.3 min1,9411,946
Friday81.0%11.2 min1,9611,986
Saturday84.8%6.9 min1,8041,813
Sunday81.4%11.8 min1,9771,999

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 · 84.8% · 1,188 recorded · 1,157 measured · Source: the US BTS Feb · 88.6% · 1,177 recorded · 1,170 measured · Source: the US BTS Mar · 84.5% · 1,318 recorded · 1,299 measured · Source: the US BTS Apr · 84.5% · 1,223 recorded · 1,216 measured · Source: the US BTS May · 79.0% · 1,157 recorded · 1,145 measured · Source: the US BTS Jun · 74.8% · 1,100 recorded · 1,084 measured · Source: the US BTS Jul · 77.3% · 1,106 recorded · 1,089 measured · Source: the US BTS Aug · 80.9% · 571 recorded · 564 measured · Source: the US BTS Sep · 85.9% · 510 recorded · 510 measured · Source: the US BTS Oct · 85.8% · 1,078 recorded · 1,078 measured · Source: the US BTS Nov · 85.4% · 1,353 recorded · 1,353 measured · Source: the US BTS Dec · 85.4% · 1,276 recorded · 1,275 measured · Source: the US BTS

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Average departure delay Partial coverage: only airlines that report on-time data to the US DOT
Jan · 6.3 min · 1,188 recorded · 1,157 measured · Source: the US BTS Feb · 5.0 min · 1,177 recorded · 1,170 measured · Source: the US BTS Mar · 11.3 min · 1,318 recorded · 1,299 measured · Source: the US BTS Apr · 8.7 min · 1,223 recorded · 1,216 measured · Source: the US BTS May · 14.0 min · 1,157 recorded · 1,145 measured · Source: the US BTS Jun · 18.7 min · 1,100 recorded · 1,084 measured · Source: the US BTS Jul · 14.6 min · 1,106 recorded · 1,089 measured · Source: the US BTS Aug · 12.4 min · 571 recorded · 564 measured · Source: the US BTS Sep · 6.2 min · 510 recorded · 510 measured · Source: the US BTS Oct · 6.7 min · 1,078 recorded · 1,078 measured · Source: the US BTS Nov · 5.5 min · 1,353 recorded · 1,353 measured · Source: the US BTS Dec · 7.8 min · 1,276 recorded · 1,275 measured · Source: the US BTS

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Recorded flights Partial coverage: only airlines that report on-time data to the US DOT
Jan · 1,188 · 1,188 recorded · 1,157 measured · Source: the US BTS Feb · 1,177 · 1,177 recorded · 1,170 measured · Source: the US BTS Mar · 1,318 · 1,318 recorded · 1,299 measured · Source: the US BTS Apr · 1,223 · 1,223 recorded · 1,216 measured · Source: the US BTS May · 1,157 · 1,157 recorded · 1,145 measured · Source: the US BTS Jun · 1,100 · 1,100 recorded · 1,084 measured · Source: the US BTS Jul · 1,106 · 1,106 recorded · 1,089 measured · Source: the US BTS Aug · 571 · 571 recorded · 564 measured · Source: the US BTS Sep · 510 · 510 recorded · 510 measured · Source: the US BTS Oct · 1,078 · 1,078 recorded · 1,078 measured · Source: the US BTS Nov · 1,353 · 1,353 recorded · 1,353 measured · Source: the US BTS Dec · 1,276 · 1,276 recorded · 1,275 measured · Source: the US BTS

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View the figures
Month of yearOn-time departuresAverage departure delayWith departure timeRecorded flights
Jan84.8%6.3 min1,1571,188
Feb88.6%5.0 min1,1701,177
Mar84.5%11.3 min1,2991,318
Apr84.5%8.7 min1,2161,223
May79.0%14.0 min1,1451,157
Jun74.8%18.7 min1,0841,100
Jul77.3%14.6 min1,0891,106
Aug80.9%12.4 min564571
Sep85.9%6.2 min510510
Oct85.8%6.7 min1,0781,078
Nov85.4%5.5 min1,3531,353
Dec85.4%7.8 min1,2751,276

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 82.5% 10,766
  • Delayed >15 min 16.7% 2,174
  • Cancelled 0.9% 117
  • 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

109
109 of 109
Flight numbersBy direction DeparturesOn time
UA1799 IAH → LAS 658 87.8%
UA1711 LAS → IAH 548 90.7%
UA1971 IAH → LAS 488 79.5%
UA1264 IAH → LAS 459 93.0%
UA305 LAS → IAH 443 83.6%
UA2608 LAS → IAH 440 95.2%
UA1181 LAS → IAH 430 93.4%
UA2017 LAS → IAH 394 92.8%
UA2339 IAH → LAS 378 76.4%
UA2492 LAS → IAH 340 85.8%
F991966 LAS → IAH 318 78.0%
UA1913 IAH → LAS 311 84.1%
F991490 LAS → IAH 271 85.0%
F991965 IAH → LAS 259 67.5%
UA2406 IAH → LAS 254 79.5%
F994131 IAH → LAS 226 67.3%
UA1524 IAH → LAS 220 86.8%
UA2678 LAS → IAH 192 80.5%
UA686 IAH → LAS 169 83.3%
UA2741 LAS → IAH 145 74.5%
UA2066 IAH → LAS 126 76.0%
UA2322 LAS → IAH 117 83.8%
UA2449 LAS → IAH 104 77.5%
F991489 IAH → LAS 103 69.3%
UA2157 IAH → LAS 98 70.1%
NK1255 LAS → IAH 96 70.5%
UA1183 IAH → LAS 96 73.7%
NK1254 IAH → LAS 94 62.9%
NK3726 IAH → LAS 88 80.7%
NK3727 LAS → IAH 88 77.3%
UA1810 LAS → IAH 76 84.2%
UA1360 IAH → LAS 71 59.2%
UA1652 LAS → IAH 70 85.7%
UA1331 IAH → LAS 69 81.2%
UA2236 IAH → LAS 64 78.1%
NK2378 LAS → IAH 63 61.9%
NK2379 IAH → LAS 63 84.1%
NK2381 IAH → LAS 62 72.6%
NK2380 LAS → IAH 61 72.1%
NK554 LAS → IAH 61 83.6%
NK1982 IAH → LAS 59 89.8%
NK1807 IAH → LAS 58 86.2%
NK1983 LAS → IAH 58 86.2%
NK551 IAH → LAS 58 86.2%
UA2748 IAH → LAS 58 73.7%
NK1139 IAH → LAS 56 85.5%
NK1808 LAS → IAH 56 76.8%
NK163 LAS → IAH 55 94.4%
NK185 LAS → IAH 54 86.5%
NK186 IAH → LAS 54 90.4%
NK490 IAH → LAS 53 92.5%
NK2394 LAS → IAH 52 80.8%
NK489 LAS → IAH 52 90.4%
UA1055 LAS → IAH 52 76.9%
NK1142 LAS → IAH 51 76.0%
NK196 IAH → LAS 46 79.6%
UA1818 IAH → LAS 46 55.6%
UA2190 IAH → LAS 45 79.6%
NK586 IAH → LAS 41 80.5%
UA1475 IAH → LAS 41 78.1%
UA1115 IAH → LAS 37 89.2%
UA1131 IAH → LAS 37 86.5%
UA1351 IAH → LAS 37 100.0%
UA1416 IAH → LAS 37 94.6%
UA1657 IAH → LAS 37 82.9%
UA1685 LAS → IAH 37 91.7%
UA1709 LAS → IAH 37 75.0%
UA1885 LAS → IAH 37 97.3%
UA1891 LAS → IAH 37 100.0%
UA1893 LAS → IAH 37 94.6%
UA1899 LAS → IAH 37 66.7%
UA1915 LAS → IAH 37 94.6%
UA1957 LAS → IAH 37 86.5%
UA317 IAH → LAS 37 100.0%
UA507 IAH → LAS 37 81.1%
UA650 LAS → IAH 37 81.1%
UA1113 IAH → LAS 36 83.3%
UA1388 LAS → IAH 36 80.6%
UA1764 IAH → LAS 36 80.6%
UA2359 IAH → LAS 36 88.9%
UA2658 IAH → LAS 36 75.0%
UA2840 LAS → IAH 36 83.3%
UA451 IAH → LAS 36 80.6%
NK1146 LAS → IAH 35 94.3%
NK1149 IAH → LAS 35 82.9%
UA1448 IAH → LAS 35 52.9%
UA2060 IAH → LAS 35 42.4%
UA2490 LAS → IAH 35 88.6%
UA2753 LAS → IAH 35 88.6%
NK531 IAH → LAS 34 61.8%
NK532 LAS → IAH 34 88.2%
NK2302 LAS → IAH 33 87.5%
NK2303 IAH → LAS 33 69.7%
NK1355 IAH → LAS 32 75.9%
NK1356 LAS → IAH 32 74.2%
NK197 LAS → IAH 32 83.9%
NK379 LAS → IAH 32 90.6%
NK550 IAH → LAS 32 84.4%
NK553 LAS → IAH 32 87.5%
UA1660 LAS → IAH 32 84.4%
UA1944 LAS → IAH 32 87.5%
UA2009 LAS → IAH 32 90.6%
UA2724 LAS → IAH 32 96.9%
NK376 IAH → LAS 31 61.3%
UA1267 IAH → LAS 31 87.1%
UA2657 IAH → LAS 31 74.2%
UA2674 IAH → LAS 31 80.7%
UA1604 LAS → IAH 30 90.0%
UA2141 LAS → IAH 30 90.0%

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 519 −8.9% 9 76.7%
June 2026 515 −9.5% 7 76.9%
May 2026 524 −15.6% 3 79.8%
April 2026 581 −8.5% 7 81.8%
March 2026 630 −5.8% 16 81.6%
February 2026 576 −3.0% 7 88.9%
January 2026 559 −6.5% 5 88.6%
December 2025 616 −6.5% 0 89.4%
November 2025 623 −14.7% 0 82.2%
October 2025 584 +18.2% 0 85.8%
September 2025 510 0 85.9%
August 2025 564 7 80.9%
July 2025 570 8 77.9%
June 2025 569 9 72.9%
May 2025 621 9 78.4%
April 2025 635 0 87.1%
March 2025 669 3 87.3%
February 2025 594 0 88.4%
January 2025 598 26 81.3%
December 2024 659 1 81.6%
November 2024 730 0 88.2%
October 2024 494 0 85.8%

How to read this chart

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