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754 km · Domestic

George Bush Intercontinental (IAH) – Frederick W. Smith (MEM)

In July 2026, 182 flights operated between George Bush Intercontinental and Frederick W. Smith (both directions), and 81.3% 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
January81146▲ 80.2%
February95138▲ 45.3%
March118179▲ 51.7%
April119235▲ 97.5%
May197190▼ 3.6%
June213179▼ 16.0%
July176182▲ 3.4%
August179––
September201––
October186–in progress
November178––
December157––
Year to date (Jan–Jul)9991,249▲ 25.0%

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
January82.7%84.2%▲ 1.8%
February75.8%84.1%▲ 10.9%
March72.9%79.3%▲ 8.8%
April84.9%78.3%▼ 7.8%
May82.7%80.5%▼ 2.7%
June66.7%83.2%▲ 24.7%
July78.4%81.3%▲ 3.7%
August84.4%––
September93.5%––
October87.6%–in progress
November79.8%––
December76.4%––
Year-to-date average (Jan–Jul)77.7%81.6%▲ 4.9%

Cancelled flights by month

The most recent periods19 periods
PeriodCancelled flights 2025Cancelled flights 2026Change vs last year
January913▲ 44.4%
February00–
March04–
April220.0%
May20▼ 100.0%
June110.0%
July02–
August2––
September0––
October0–in progress
November0––
December0––
Year to date (Jan–Jul)1422▲ 57.1%

Airlines on this route

  1. SkyWest Airlines 61.0%
  2. United Airlines 39.0%

Oct 1, 2024 – Jul 31, 2026

By direction

IAH → MEM

Scheduled flights
1,675
Flights operated
1,656
Cancelled
19 · 1.1%
On-time departures
79.2%

MEM → IAH

Scheduled flights
1,672
Flights operated
1,653
Cancelled
19 · 1.1%
On-time departures
83.0%

IAH → MEM and MEM → IAH counted separately.

Airlines on this route

Oct 1, 2024 – Jul 31, 2026
AirlineScheduled flights Share On-time departures Cancelled
SkyWest Airlines OO 2,043 61.0% 81.2% 20
United Airlines UA 1,304 39.0% 80.9% 18

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 delay07:00–08:002.5min · 670 recorded · 665 measured
Gap to highest-delay hour18.8min07:00 ↔ 15:00
Recorded flights3,347IAH–MEM

Departure hour

On-time departures Partial coverage: only airlines that report on-time data to the US DOT

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

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

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

View the figures
Departure hourOn-time departuresAverage departure delayWith departure timeRecorded flights
00:00No observations———
01:00No observations———
02:00No observations———
03:00No observations———
04:00No observations———
05:00No observations———
06:0088.8%4.0 min383391
07:0091.0%2.5 min665670
08:00Fewer than 200 measured departures—5454
09:00Fewer than 200 measured departures—108108
10:00No observations———
11:0080.9%11.4 min549552
12:0085.3%11.8 min327332
13:00No observations———
14:00Fewer than 200 measured departures—2929
15:0074.6%21.3 min413420
16:00Fewer than 200 measured departures—9697
17:00Fewer than 200 measured departures—1919
18:00Fewer than 200 measured departures—3131
19:00Fewer than 200 measured departures—4343
20:0070.3%19.5 min579587
21:00Fewer than 200 measured departures—1314
22:00No observations———
23:00No observations———

Day of week

On-time departures Partial coverage: only airlines that report on-time data to the US DOT

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

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

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

View the figures
Day of weekOn-time departuresAverage departure delayWith departure timeRecorded flights
Monday81.0%14.6 min483492
Tuesday83.9%8.7 min459466
Wednesday86.9%7.2 min464469
Thursday82.0%12.9 min489492
Friday75.8%12.0 min475478
Saturday79.4%12.7 min465469
Sunday79.1%15.4 min474481

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

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

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

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

View the figures
Month of yearOn-time departuresAverage departure delayWith departure timeRecorded flights
Jan83.7%6.3 min227249
Feb80.7%9.3 min233233
Mar76.8%16.7 min297301
Apr80.5%12.2 min354358
May81.7%9.5 min387389
Jun74.2%23.1 min392394
Jul79.9%13.5 min358360
AugFewer than 200 measured departures—179181
Sep93.5%0.5 min201201
Oct87.2%3.9 min226226
Nov81.8%8.0 min236236
Dec78.1%24.8 min219219

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 80.2% 2,684
  • Delayed >15 min 18.7% 625
  • Cancelled 1.1% 38
  • 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

22
22 of 22
Flight numbersBy direction DeparturesOn time
UA1794 IAH → MEM 629 70.7%
OO5798 MEM → IAH 322 72.5%
OO5758 IAH → MEM 316 86.1%
UA2477 MEM → IAH 232 89.9%
OO5467 MEM → IAH 200 85.5%
OO5254 IAH → MEM 178 88.8%
UA537 MEM → IAH 169 91.0%
OO5451 MEM → IAH 135 74.2%
OO5329 IAH → MEM 134 87.1%
OO5525 MEM → IAH 71 85.9%
OO5360 IAH → MEM 67 92.3%
OO5361 IAH → MEM 63 58.1%
OO5710 MEM → IAH 37 70.3%
UA1799 MEM → IAH 37 97.3%
OO4736 IAH → MEM 36 91.7%
UA2860 MEM → IAH 36 87.9%
UA494 MEM → IAH 36 94.4%
OO5228 IAH → MEM 32 62.5%
OO5235 MEM → IAH 32 62.5%
OO5236 MEM → IAH 32 93.8%
OO5321 IAH → MEM 32 87.5%
OO5229 IAH → MEM 31 90.3%

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 182 +3.4% 2 81.3%
June 2026 179 −16.0% 1 83.2%
May 2026 190 −3.6% 0 80.5%
April 2026 235 +97.5% 2 78.3%
March 2026 179 +51.7% 4 79.3%
February 2026 138 +45.3% 0 84.1%
January 2026 146 +80.2% 13 84.2%
December 2025 157 +153.2% 0 76.4%
November 2025 178 +206.9% 0 79.8%
October 2025 186 +365.0% 0 87.6%
September 2025 201 0 93.5%
August 2025 179 2 84.4%
July 2025 176 0 78.4%
June 2025 213 1 66.7%
May 2025 197 2 82.7%
April 2025 119 2 84.9%
March 2025 118 0 72.9%
February 2025 95 0 75.8%
January 2025 81 9 82.7%
December 2024 62 0 82.3%
November 2024 58 0 87.9%
October 2024 40 0 85.0%

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