DFW to IAH flight delays
Dallas/Fort Worth, TX (DFW) Houston, TX (IAH) · 224 miles
464 flights · March 2025 – August 2026 · US Bureau of Transportation Statistics
58.07%
Arrived on time
Within 15 minutes of schedule
3.66%
Cancelled
Share of scheduled flights
108 min
When late, late by
Average across delayed arrivals
47 min
Delay per flight
Averaged over every flight flown
What the record says about this route
Which airline you fly changes the odds here. United Airlines arrived on time 26.6 points more often than American Airlines over the same period on the same route — same airports, same weather, same air traffic control. A gap that survives all of that is about how the two airlines are run.
Cancellation, not delay, is the risk worth pricing here: 3.66% of scheduled flights never operated. A late flight still gets you there. A cancelled one leaves you rebooking, and on a route with few daily departures that can mean losing a day.
This is a late route. Flights from Dallas/Fort Worth to Houston miss their scheduled arrival often enough that a tight connection at the far end is a connection at risk.
The two directions do not behave alike. IAH to DFW arrives on time 6.5 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.
Which airline should you fly on this route?
Over March 2025 – August 2026, United Airlines arrived on time most often on DFW to IAH. American Airlines was late most often.
Every airline on DFW 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 |
|---|---|---|---|---|---|
| American Airlines | 194 | 42.93% | 5.15% | 113 min | F |
| United Airlines | 184 | 69.57% | 0% | 113 min | C |
| Envoy Air | 66 | 62.3% | 6.06% | 72 min | — |
| SkyWest Airlines | 20 | 82.35% | 15% | 106 min | — |
Other routes from Dallas/Fort Worth
Common questions
Are flights from Dallas/Fort Worth to Houston usually delayed?
58.07% of flights on the DFW 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 airline is most on time from Dallas/Fort Worth to Houston?
United Airlines, at 69.57% on time across 184 flights. The least punctual on the route was American Airlines at 42.93%.
How often are DFW to IAH flights cancelled?
3.66% of scheduled flights did not operate — about 37 in every thousand. That is high enough that cancellation, not delay, is the risk worth planning around.
When DFW to IAH flights are late, how late are they?
About 108 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 DFW to IAH during March 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 →