Flight profile · United Airlines
UA1949
Houston (IAH) to Dallas–Fort Worth (DFW) · scheduled 8:25 PM – 9:47 PM
How UA1949 performs
665 operations, June 2024 – July 2026.
UA1949 arrived on time 69.1% of the time, against 73.2% for all IAH → DFW flights, so this departure is 4.1 percentage points worse than the route as a whole. Against United Airlines’ own flights on this route it is 2.7 points worse.
Source: US DOT Bureau of Transportation Statistics · 665 operations, June 2024 – July 2026 · If UA1949 is cancelled or significantly changed, DOT’s automatic refund rule may entitle you to your money back. The refund checker walks through eligibility.
Where UA1949 is right now
A live reading, only if you ask for it. It is not part of the reliability record above.
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Against the rest of the route
| Flight or route | On time | Cancelled | Median delay | Severe | Flights |
|---|---|---|---|---|---|
| UA1949 | 69.1% | 1.35% | 2 min | 12.4% | 665 |
| United Airlines on IAH → DFW | 71.8% | 1.51% | -2 min | 11.4% | 5,620 |
| All IAH → DFW flights | 73.2% | 2.70% | -3 min | 11.6% | 16,944 |
UA1949 has cancelled 1.35% of its scheduled departures (9 of 665), against 2.70% for all IAH → DFW flights — this specific departure cancels 1.4 percentage points less often than the route as a whole. Different flight numbers on the same route can carry different aircraft, crews and schedules, so this is a fact about UA1949 specifically, not about the route it flies.
Source: FlyerIntel analysis of US DOT BTS data · June 2024 – July 2026
Why UA1949 runs late
Where US DOT attributed the delay minutes on this flight.
the inbound aircraft was late, so this flight started late
crew, maintenance, boarding and fueling, all within the carrier’s control
airspace and airport capacity, including weather-driven flow control
weather severe enough to stop this flight specifically
Share of the delay minutes US DOT attributed to each cause for UA1949 on IAH → DFW. Only delays of 15 minutes or more are attributed.
Source: US DOT Bureau of Transportation Statistics · Data covering June 2024 – July 2026
Does a late aircraft delay this flight?
How often the plane that flies UA1949 comes in late, and what that does to the departure.
When the aircraft came in 15 or more minutes late, UA1949 pushed back an average of 45 minutes late; when it came in on time or early, an average of 10 minutes late.
Each departure is matched to the flight the same aircraft flew into IAH just before it, using the tail number in the DOT file, 514 of 656 departures in all. A departure is left out when that flight is unknown, was cancelled or diverted, or the aircraft had sat for more than 12 hours. A flight the airline cancelled never left and is not in the count, and one flown by a substitute aircraft is matched to the aircraft that flew it, not to the one first planned.
Against the network at the same turn length
| Share of departures | Inbound landed 15+ late | Left 15+ late after a late inbound | Left 15+ late after an on-time inbound |
|---|---|---|---|
| UA1949 | 26% | 60% | 20% |
| Network, same turn | 17% | 68% | 9% |
The schedule leaves a normal turn: enough time to clean and board if the aircraft is on time, little to spare if it is not.
The network row is every flight with a scheduled turn of 60 to 89 minutes. How often UA1949’s aircraft landed 15 or more minutes late is higher than the network’s and, once the aircraft was late, how often UA1949 left 15 or more minutes late is lower than the network’s.
More: Which Flight Numbers Pay for a Late Aircraft lists the flight numbers that pass a late aircraft on.
Source: US DOT Bureau of Transportation Statistics · Data covering June 2024 – July 2026
From pushback to gate
When it leaves IAH late, does that still matter by the time it reaches DFW?
UA1949 pushes back an average of 21.7 minutes late and reaches the gate at DFW an average of 16.3 minutes late. The 5.4 minutes between those two figures are slack the published schedule already carries, which is why a late pushback on this flight does not reliably become a late arrival. It spends 22.8 minutes on the taxiways at IAH, 1.2 minutes longer than a typical IAH departure in the same hour.
On arrival at DFW, UA1949 spends 12.4 min taxiing from touchdown to the gate — ground time a connecting passenger sits through before they can even leave the aircraft, on top of however late the flight itself ran. That is 1.1 minutes shorter than a typical DFW arrival (13.5 min).
Departure delay is averaged over every pushback and arrival delay over every completed arrival, so the two counts differ by the flights that never reached DFW. Taxi-out is gate to wheels up and sits inside the scheduled block rather than on top of it; the comparison is 34,354 departures from IAH scheduled in the clock hour UA1949 most often leaves in. Taxi-in is landing to gate, compared against every arrival FlyerIntel has on file at DFW (961,642 flights), not just UA1949’s own. More on taxi time.
Source: FlyerIntel analysis of US DOT BTS data · June 2024 – July 2026
The hour it leaves IAH
Part of any flight’s record belongs to the clock rather than to the flight. UA1949 has one departure time, so this is what that time is worth.
On-time arrival rate. 34,354 departures from IAH are scheduled in the 8 PM–9 PM hour over the period, against 359,450 across the whole day.
UA1949 is scheduled out of IAH at 8:25 PM, in the 8 PM–9 PM bank. Departures from IAH in that hour arrive on time 71.5% of the time against 77.4% across the airport’s whole day — the slot alone is worth 5.9 points worse before anything about this particular flight is considered.
The two airport figures cover every departure from IAH to every destination, so they describe the slot rather than this journey — the like-for-like comparison against the route is above. Hours are scheduled local, and a number whose schedule moved between banks inside the period has no single hour and is not described here at all. Why the hour matters.
Source: FlyerIntel analysis of US DOT BTS data · June 2024 – July 2026 · Hours below 120 departures are not scored.
Other routes UA1949 has flown
A flight number is a slot in a schedule, and carriers reassign it. These are the other city pairs this number served in the analysis period.
| Route | Operated | Flights | On time |
|---|---|---|---|
| SMF→IAH Sacramento to Houston | October 26, 2025 – July 31, 2026 | 240 | 87.9% |
| LAX→SMF Los Angeles to Sacramento | March 5, 2026 – May 20, 2026 | 46 | — |
| IAH→LGA Houston to New York | March 28, 2026 | 1 | — |
| RSW→IAH Fort Myers to Houston | May 1, 2025 – October 25, 2025 | 52 | — |
| PIT→IAH Pittsburgh to Houston | May 22, 2025 – August 18, 2025 | 67 | — |
| LGA→IAH New York to Houston | March 30–31, 2025 | 2 | — |
| MIA→IAH Miami to Houston | March 6–29, 2025 | 24 | — |
| CMH→IAH Columbus to Houston | May 23, 2024 – February 12, 2025 | 183 | 67.4% |
| TPA→IAH Tampa to Houston | December 19, 2024 – January 6, 2025 | 18 | — |
| IAH→MFE Houston to McAllen | December 18, 2024 | 1 | — |
| IAH→IND Houston to Indianapolis | March 31, 2024 – May 31, 2024 | 61 | — |
| IAH→ONT Houston to Ontario | May 22, 2024 | 1 | — |
| MSY→IAH New Orleans to Houston | March 7–31, 2024 | 20 | — |
| DEN→JAX Denver to Jacksonville | February 15, 2024 – March 6, 2024 | 21 | — |
| ORD→DCA Chicago to Washington | January 9, 2024 – February 14, 2024 | 31 | — |
| SRQ→EWR Sarasota/Bradenton to Newark | December 21, 2023 – January 8, 2024 | 19 | — |
| ORD→PIT Chicago to Pittsburgh | December 20, 2023 | 1 | — |
| IAD→CHS Washington to Charleston | July 1, 2023 – December 18, 2023 | 156 | 82.6% |
| LAS→IAH Las Vegas to Houston | November 15, 2023 | 1 | — |
| LAX→IAH Los Angeles to Houston | November 1, 2023 | 1 | — |
| RNO→SFO Reno to San Francisco | September 5, 2023 | 1 | — |
Because the same number has served different journeys, the statistics above describe only the route UA1949 currently operates. Blending them would produce an average of two different flights.
When it goes wrong
The average describes a usual day. This is the day that ruins a connection.
69 min late
against a median of 2 min late
UA1949 has an average that understates its risk: a typical arrival is 2 min late, but the worst tenth are 67 minutes worse than that. If the trip has something unmissable at the end of it, the median is the wrong number to plan against.
Percentiles over 665 operations; cancelled and diverted flights are counted separately.
Source: US DOT Bureau of Transportation Statistics · Data covering June 2024 – July 2026
Other flights on this route
Same airports, same journey, different odds of arriving on time.
| Flight | Airline | On time | Median arrival | Operations |
|---|---|---|---|---|
| AA2551 | American Airlines | 84.3% | 6 min early | 914 |
| UA1949 this flight | United Airlines | 69.1% | 2 min late | 665 |
Every departure listed carries at least 600 operations, so the comparison is between figures that mean something. UA1949 is placed in the same ordering rather than left out of it; the rows around it are the most punctual departures on the route, not all of them, so this is a comparison and not a rank. Schedules change; confirm the departure still operates before booking around this.
Data and methodology
Calculated by FlyerIntel from 665 records of UA1949 operating IAH → DFW, published by the US DOT Bureau of Transportation Statistics. A flight counts as delayed when it arrives 15 or more minutes after schedule. Cancelled and diverted flights are excluded from the on-time rate and reported separately. Flight numbers are resolved as carrier plus number plus route, because the same number serves different routes over time.
Full methodology · Data sources · Report a problem
Related research: Most and Least Reliable Flight Numbers · The Delay You Inherit · Making Up Time in the Air
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