CHA to IAH flight delays
Chattanooga, TN (CHA) Houston, TX (IAH) · 686 miles
185 flights · January 2025 – August 2026 · US Bureau of Transportation Statistics
61.2%
Arrived on time
Within 15 minutes of schedule
0.54%
Cancelled
Share of scheduled flights
98 min
When late, late by
Average across delayed arrivals
39 min
Delay per flight
Averaged over every flight flown
What the record says about this route
This is a late route. Flights from Chattanooga to Houston miss their scheduled arrival often enough that a tight connection at the far end is a connection at risk.
This route does worse than its own airport. CHA as a whole runs 16.9 points more punctual than these flights, which points at something specific to the route — the time of day it is scheduled, or the aircraft that feed it — rather than the airport.
The two directions do not behave alike. IAH to CHA arrives on time 7.1 points more often than the outbound. Delay accumulates through the flying day, so whichever direction is scheduled later tends to carry the worse record — which is an argument for booking the morning departure if the choice exists.
Only SkyWest Airlines flies this route in the published record, so there is no choice to weigh — the route's figures and the airline's are the same figures.
Which airline should you fly on this route?
Over January 2025 – August 2026, SkyWest Airlines arrived on time most often on CHA to IAH. Flights ran closest to schedule in June and worst in April.
Every airline on CHA to IAH
Ranked by how many flights each one operated. A carrier with fewer than 100 flights in the period is listed but not graded.
| Airline | Flights | On time | Cancelled | Avg delay | Grade |
|---|---|---|---|---|---|
| SkyWest Airlines | 185 | 61.2% | 0.54% | 98 min | F |
Month by month
Share of flights that arrived within 15 minutes of schedule, by month flown.
The return leg
IAH to CHA Houston back to Chattanooga 68.28% on time DCommon questions
Are flights from Chattanooga to Houston usually delayed?
61.2% of flights on the CHA to IAH route arrived within 15 minutes of schedule, so roughly 4 in every ten arrived late. That is worse than the average route in this record.
Which airlines fly from Chattanooga to Houston?
Only SkyWest Airlines appears in the published record on this route, with 185 flights and 61.2% arriving on time.
How often are CHA to IAH flights cancelled?
0.54% of scheduled flights did not operate — about 5 in every thousand. That is in the normal range.
When CHA to IAH flights are late, how late are they?
About 98 minutes on average across the flights that arrived more than 15 minutes behind schedule.
What these figures do and do not tell you
Everything on this page is counted from the flights that actually operated on CHA to IAH during January 2025 – August 2026, as reported by the airlines to the US Bureau of Transportation Statistics. "On time" is the federal definition: arriving at the gate within 15 minutes of the scheduled time.
A route's record is a description of the past, not a forecast. Weather, air traffic control and the aircraft's earlier flights that day drive most delays, and none of them are predictable from a historical rate. What the record does tell you is whether this route runs late more often than others, and which carrier on it has the better history — which is the part you can actually act on when you book.
Cancellations are counted separately from delays because they are a different problem for a traveller: a late flight still gets you there. How the grade is calculated →