Skip to content
WanderNerd
Check a flight

Route Reliability

Houston → Charleston

IAH–CHS · 925 miles · George Bush Intercontinental Airport to Charleston International Airport

81
Pretty Reliable
WanderNerd Reliability Score
77%
Arrive within 15 minutes
8 min
Average arrival delay
0.9%
Cancelled
698
Flights in the data

Data through May 2026.

United Airlines is the only airline in this data on this route, arriving on time 77% of the time across 698 flights. No comparison to make.

What the data says

12–3 PM has a slight edge.

Departures between 12–3 PM arrived on time 78% of the time, against 75% between 6–9 PM.

Mondays have been rough.

IAH–CHS flights arrived on time 86% of the time on Tuesdays and just 67% on Mondays. That gap is worth planning around.

Slipping a little lately.

IAH–CHS flights arrived on time 82% of the time over the last three months in the data, compared with 86% in the three months before that.

Flights on this route

The breakdown

On-time by weekday
  • Mon67%(103 flights)
  • Tue86%(94 flights)
  • Wed79%(102 flights)
  • Thu78%(102 flights)
  • Fri75%(102 flights)
  • Sat77%(85 flights)
  • Sun76%(103 flights)
On-time by departure window
  • 12–3 PM78%(361 flights)
  • 3–6 PM—(1 flights)
  • 6–9 PM75%(329 flights)
On-time trend by month
87%
May

Jun 62% → May 87% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202562%58
July 202548%61
August 202553%57
September 202594%52
October 202586%58
November 202576%59
December 202584%56
January 202682%55
February 202693%54
March 202684%61
April 202675%59
May 202687%61

Same trip, other airports

Keep nerding

Based on 698 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.