Flight profile · United Airlines
UA2670
Dallas–Fort Worth (DFW) to Houston (IAH) · scheduled 7:00 AM – 8:21 AM
How UA2670 performs
941 operations, July 2023 – July 2026.
UA2670 arrived on time 74.8% of the time, against 71.3% for all DFW → IAH flights, so this departure is 3.5 percentage points better than the route as a whole. Against United Airlines’ own flights on this route it is 2.2 points worse.
Source: US DOT Bureau of Transportation Statistics · 941 operations, July 2023 – July 2026 · If UA2670 is cancelled or significantly changed, DOT’s automatic refund rule may entitle you to your money back. The refund checker walks through eligibility.
Where UA2670 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 |
|---|---|---|---|---|---|
| UA2670 | 74.8% | 1.70% | -1 min | 5.6% | 941 |
| United Airlines on DFW → IAH | 77.0% | 1.82% | -5 min | 8.9% | 5,614 |
| All DFW → IAH flights | 71.3% | 2.80% | -2 min | 11.7% | 16,933 |
UA2670 has cancelled 1.70% of its scheduled departures (16 of 941), against 2.80% for all DFW → IAH flights — this specific departure cancels 1.1 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 UA2670 specifically, not about the route it flies.
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – July 2026
Why UA2670 runs late
Where US DOT attributed the delay minutes on this flight.
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
the inbound aircraft was late, so this flight started late
Share of the delay minutes US DOT attributed to each cause for UA2670 on DFW → IAH. Only delays of 15 minutes or more are attributed.
Source: US DOT Bureau of Transportation Statistics · Data covering July 2023 – July 2026
Does a late aircraft delay this flight?
How often the plane that flies UA2670 comes in late, and what that does to the departure.
UA2670 is usually the aircraft’s first flight of the day: the schedule gives it a median of 9.3 hours on the ground at DFW, so its “inbound” is mostly the aircraft’s arrival the evening before.
When the aircraft came in 15 or more minutes late, UA2670 pushed back an average of 13 minutes late; when it came in on time or early, an average of 4 minutes late.
Each departure is matched to the flight the same aircraft flew into DFW just before it, using the tail number in the DOT file, 887 of 925 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 |
|---|---|---|---|
| UA2670 | 33% | 16% | 6% |
| Network, same turn | 29% | 12% | 9% |
A night on the ground absorbs most of a late arrival, so a late inbound matters far less on a turn this long than on a same-day one.
The network row is every flight with a scheduled turn of 6 hours or more, usually overnight. How often UA2670’s aircraft landed 15 or more minutes late is higher than the network’s and, once the aircraft was late, how often UA2670 left 15 or more minutes late is higher 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 July 2023 – July 2026
From pushback to gate
When it leaves DFW late, does that still matter by the time it reaches IAH?
UA2670 pushes back an average of 7.2 minutes late and arrives a further 3.7 minutes behind that. This departure loses ground between the two gates rather than recovering it, so a late pushback here tends to get worse on the way, not better. It spends 25.2 minutes on the taxiways at DFW, 5.3 minutes longer than a typical DFW departure in the same hour.
On arrival at IAH, UA2670 spends 10.8 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 about what any arrival at IAH spends on the ground before reaching the gate.
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 IAH. Taxi-out is gate to wheels up and sits inside the scheduled block rather than on top of it; the comparison is 62,158 departures from DFW scheduled in the clock hour UA2670 most often leaves in. Taxi-in is landing to gate, compared against every arrival FlyerIntel has on file at IAH (359,471 flights), not just UA2670’s own. More on taxi time.
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – July 2026
The hour it leaves DFW
Part of any flight’s record belongs to the clock rather than to the flight. UA2670 has one departure time, so this is what that time is worth.
On-time arrival rate. 62,158 departures from DFW are scheduled in the 7 AM–8 AM hour over the period, against 961,718 across the whole day.
UA2670 is scheduled out of DFW at 7:00 AM, in the 7 AM–8 AM bank. Departures from DFW in that hour arrive on time 85.2% of the time against 73.1% across the airport’s whole day — the slot alone is worth 12.1 points better before anything about this particular flight is considered.
The two airport figures cover every departure from DFW 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 · July 2023 – July 2026 · Hours below 120 departures are not scored.
By day of week
Does UA2670 run worse on particular days?
Wednesday is historically the most reliable day and Friday the least, a gap of 15.8 percentage points.
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – July 2026 · Days with fewer than 120 operations are not scored.
Other routes UA2670 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 |
|---|---|---|---|
| IAH→DCA Houston to Washington | June 25, 2026 – July 31, 2026 | 32 | — |
| IAH→SLC Houston to Salt Lake City | June 27, 2026 | 1 | — |
| LAX→EWR Los Angeles to Newark | May 21, 2026 | 1 | — |
| IAH→LGA Houston to New York | April 30, 2026 – May 20, 2026 | 21 | — |
| IAH→FLL Houston to Fort Lauderdale | June 26, 2025 – April 29, 2026 | 108 | 76.6% |
| SMF→SFO Sacramento to San Francisco | January 7, 2026 – February 11, 2026 | 6 | — |
| IAH→DEN Houston to Denver | May 22, 2025 – January 5, 2026 | 67 | — |
| DEN→COS Denver to Colorado Springs | December 2–17, 2025 | 16 | — |
| DEN→SMF Denver to Sacramento | August 19, 2025 – October 25, 2025 | 42 | — |
| MEM→IAH Memphis to Houston | September 25–30, 2025 | 6 | — |
| DEN→SBA Denver to Santa Barbara | May 22, 2025 – June 25, 2025 | 35 | — |
| LGA→IAH New York to Houston | September 5, 2023 – May 31, 2025 | 11 | — |
| MFR→SFO Medford to San Francisco | October 27, 2024 | 1 | — |
| DEN→MCI Denver to Kansas City | July 1, 2024 – August 18, 2024 | 49 | — |
| PHX→ORD Phoenix to Chicago | May 23, 2024 | 1 | — |
| ORD→LGA Chicago to New York | March 31, 2024 | 1 | — |
| SDF→ORD Louisville to Chicago | March 31, 2024 | 1 | — |
| IAH→BNA Houston to Nashville | March 7–29, 2024 | 20 | — |
| IAH→JAX Houston to Jacksonville | January 9, 2024 – February 14, 2024 | 27 | — |
| IAH→MSP Houston to Minneapolis | November 28–30, 2023 | 3 | — |
| IAH→BWI Houston to Baltimore | September 6, 2023 – October 27, 2023 | 41 | — |
| ORD→SYR Chicago to Syracuse | September 30, 2023 | 1 | — |
Because the same number has served different journeys, the statistics above describe only the route UA2670 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.
32 min late
against a median of 1 min early
Percentiles over 941 operations; cancelled and diverted flights are counted separately.
Source: US DOT Bureau of Transportation Statistics · Data covering July 2023 – July 2026
Other flights on this route
Same airports, same journey, different odds of arriving on time.
| Flight | Airline | On time | Median arrival | Operations |
|---|---|---|---|---|
| UA2670 this flight | United Airlines | 74.8% | 1 min early | 941 |
| UA1609 | United Airlines | 61.6% | 5 min late | 646 |
| AA2209 | American Airlines | 56.8% | 10 min late | 744 |
Every departure listed carries at least 600 operations, so the comparison is between figures that mean something. UA2670 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 941 records of UA2670 operating DFW → IAH, 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
Analysis last recomputed