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1,486 km · Domestic

Charleston (CHS) – George Bush Intercontinental (IAH)

In July 2026, 51 flights operated between Charleston and George Bush Intercontinental (both directions), and 78.4% 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 periods13 periods
PeriodFlights operated 2025Flights operated 2026Change vs last year
January–50–
February–48–
March3264▲ 100.0%
April5160▲ 17.6%
May5259▲ 13.5%
June4751▲ 8.5%
July5851▼ 12.1%
August37––
September–––
October––in progress
November–––
December–––

On-time departures by month

Departures within 15 minutes of schedule.

The most recent periods13 periods
PeriodOn-time departures 2025On-time departures 2026Change vs last year
January–88.0%–
February–85.4%–
March78.1%84.4%▲ 8.1%
April78.4%65.0%▼ 17.1%
May75.0%83.1%▲ 10.8%
June68.1%76.5%▲ 12.3%
July58.6%78.4%▲ 33.8%
August64.9%––
September–––
October––in progress
November–––
December–––

Cancelled flights by month

The most recent periods13 periods
PeriodCancelled flights 2025Cancelled flights 2026Change vs last year
January–0–
February–0–
March00–
April01–
May20▼ 100.0%
June00–
July20▼ 100.0%
August0––
September–––
October––in progress
November–––
December–––

Airlines on this route

  1. United Airlines 99.7%
  2. SkyWest Airlines 0.3%

Oct 1, 2024 – Jul 31, 2026

By direction

CHS → IAH

Scheduled flights
370
Flights operated
367
Cancelled
3 · 0.8%
On-time departures
84.2%

IAH → CHS

Scheduled flights
368
Flights operated
366
Cancelled
2 · 0.5%
On-time departures
69.4%

CHS → IAH and IAH → CHS counted separately.

Airlines on this route

Oct 1, 2024 – Jul 31, 2026
AirlineScheduled flights Share On-time departures Cancelled
United Airlines UA 736 99.7% 76.9% 5
SkyWest Airlines OO 2 0.3% 50.0% 0

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

Recorded flights738CHS–IAH

Departure hour

Recorded flights Partial coverage: only airlines that report on-time data to the US DOT
00:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 01:00 · No observations · 0 recorded · 0 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 · No observations · 0 recorded · 0 measured · Source: the US BTS 06:00 · 62 · 62 recorded · 62 measured · Source: the US BTS 07:00 · 143 · 143 recorded · 141 measured · Source: the US BTS 08:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 09:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 10:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 11:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 12:00 · 167 · 167 recorded · 167 measured · Source: the US BTS 13:00 · 1 · 1 recorded · 1 measured · Source: the US BTS 14:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 15:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 16:00 · 15 · 15 recorded · 15 measured · Source: the US BTS 17:00 · 150 · 150 recorded · 149 measured · Source: the US BTS 18:00 · 142 · 142 recorded · 141 measured · Source: the US BTS 19:00 · 58 · 58 recorded · 57 measured · Source: the US BTS 20:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 21:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 22:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 23:00 · No observations · 0 recorded · 0 measured · Source: the US BTS

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

No bucket in this view has 200 measured departures yet. Flight counts are shown; on-time and delay charts become available when the sample is large enough.

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———
06:00Fewer than 200 measured departures—6262
07:00Fewer than 200 measured departures—141143
08:00No observations———
09:00No observations———
10:00No observations———
11:00No observations———
12:00Fewer than 200 measured departures—167167
13:00Fewer than 200 measured departures—11
14:00No observations———
15:00No observations———
16:00Fewer than 200 measured departures—1515
17:00Fewer than 200 measured departures—149150
18:00Fewer than 200 measured departures—141142
19:00Fewer than 200 measured departures—5758
20:00No observations———
21:00No observations———
22:00No observations———
23:00No observations———

Day of week

Recorded flights Partial coverage: only airlines that report on-time data to the US DOT
Monday · 116 · 116 recorded · 116 measured · Source: the US BTS Tuesday · 96 · 96 recorded · 96 measured · Source: the US BTS Wednesday · 104 · 104 recorded · 104 measured · Source: the US BTS Thursday · 120 · 120 recorded · 120 measured · Source: the US BTS Friday · 112 · 112 recorded · 110 measured · Source: the US BTS Saturday · 82 · 82 recorded · 79 measured · Source: the US BTS Sunday · 108 · 108 recorded · 108 measured · Source: the US BTS

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

No bucket in this view has 200 measured departures yet. Flight counts are shown; on-time and delay charts become available when the sample is large enough.

View the figures
Day of weekOn-time departuresAverage departure delayWith departure timeRecorded flights
MondayFewer than 200 measured departures—116116
TuesdayFewer than 200 measured departures—9696
WednesdayFewer than 200 measured departures—104104
ThursdayFewer than 200 measured departures—120120
FridayFewer than 200 measured departures—110112
SaturdayFewer than 200 measured departures—7982
SundayFewer than 200 measured departures—108108

Month of year

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

Recorded flights Partial coverage: only airlines that report on-time data to the US DOT
Jan · 50 · 50 recorded · 50 measured · Source: the US BTS Feb · 48 · 48 recorded · 48 measured · Source: the US BTS Mar · 96 · 96 recorded · 96 measured · Source: the US BTS Apr · 112 · 112 recorded · 111 measured · Source: the US BTS May · 113 · 113 recorded · 111 measured · Source: the US BTS Jun · 98 · 98 recorded · 98 measured · Source: the US BTS Jul · 111 · 111 recorded · 109 measured · Source: the US BTS Aug · 37 · 37 recorded · 37 measured · Source: the US BTS Sep · No observations · 0 recorded · 0 measured · Source: the US BTS Oct · 40 · 40 recorded · 40 measured · Source: the US BTS Nov · 3 · 3 recorded · 3 measured · Source: the US BTS Dec · 30 · 30 recorded · 30 measured · Source: the US BTS

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

No bucket in this view has 200 measured departures yet. Flight counts are shown; on-time and delay charts become available when the sample is large enough.

View the figures
Month of yearOn-time departuresAverage departure delayWith departure timeRecorded flights
JanFewer than 200 measured departures—5050
FebFewer than 200 measured departures—4848
MarFewer than 200 measured departures—9696
AprFewer than 200 measured departures—111112
MayFewer than 200 measured departures—111113
JunFewer than 200 measured departures—9898
JulFewer than 200 measured departures—109111
AugFewer than 200 measured departures—3737
SepNo observations———
OctFewer than 200 measured departures—4040
NovFewer than 200 measured departures—33
DecFewer than 200 measured departures—3030

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 76.3% 563
  • Delayed >15 min 23.0% 170
  • Cancelled 0.7% 5
  • 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

8
8 of 8
Flight numbersBy direction DeparturesOn time
UA1195 CHS → IAH 129 89.0%
UA659 CHS → IAH 95 74.5%
UA2042 IAH → CHS 77 79.2%
UA1469 IAH → CHS 61 62.3%
UA434 CHS → IAH 60 95.0%
UA1179 CHS → IAH 44 84.1%
UA2682 IAH → CHS 35 35.3%
UA477 IAH → CHS 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 51 −12.1% 0 78.4%
June 2026 51 +8.5% 0 76.5%
May 2026 59 +13.5% 0 83.1%
April 2026 60 +17.6% 1 65.0%
March 2026 64 +100.0% 0 84.4%
February 2026 48 0 85.4%
January 2026 50 0 88.0%
August 2025 37 0 64.9%
July 2025 58 2 58.6%
June 2025 47 0 68.1%
May 2025 52 2 75.0%
April 2025 51 0 78.4%
March 2025 32 0 78.1%
December 2024 30 0 90.0%
November 2024 3 0 66.7%
October 2024 40 0 85.0%

How to read this chart

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