Flight number record
UA 1381
United Airlines · Washington to Houston
- Route
- DCA → IAH
- Departs
- 14:45
- Flights
- 285
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s UA 1381, check with United Airlines.
UA 1381 lands a B+, level with the national rate of 77.3%. Roughly one flight in four arrives 15 minutes late or worse, and those flights are late by a little over an hour on average. That rests on 285 flights, with a median arrival 7 minutes early.
Key figures
On time
77.4%
Arrivals under 15 minutes late, of 283 completed flights
Avg delay
73 min
Across delayed arrivals only, not all flights
Cancelled
0.35%
National rate is 1.89%
1 hour+ late
9.5%
National rate is 8.3%
These figures cover 285 flights between September 2025 and August 2026. Beyond the headline rate, 9.5% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Schedule
When UA 1381 flies
UA 1381 flies DCA to IAH without a single fixed slot. Its most common scheduled departure was 14:45, used on 80 of 285 flights, with 14:55 (73 flights) and 14:51 (31 flights) next.
- Departs 14:4580 flights28.1%
- Departs 14:5573 flights25.6%
- Departs 14:5131 flights10.9%
Scale runs 0% to 100%.
Share of scheduled departures at each local time. Times used on fewer than one flight in ten are not listed.
A 14:45 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 71.9%, and UA 1381 runs 6 points better at 77.4%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.
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Against the route
UA 1381 next to DCA to IAH
Every carrier on DCA to IAH combined arrived on time 80.3% of the time across 3,333 flights, so UA 1381 is 3 points behind it. United flew 2,384 flights on the same city pair under all its flight numbers, including this one, and those ran 83.5% on time. Across its whole network United Airlines managed 78.8%, close to this flight's figure.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| UA 1381thin sample | 285 | 77.4% | 73 min | 0.35% | B+ |
| All United Airlines on DCA–IAH | 2,384 | 83.5% | 85 min | 0.80% | B+ |
| All carriers on DCA–IAH | 3,333 | 80.3% | 79 min | 2.31% | B |
| United Airlines, whole network | 830,825 | 78.8% | 73 min | 1.02% | B |
Across the year
UA 1381 quarter by quarter
UA 1381 did not run the same all year. Its best quarter was Jul–Sep 2025 at 90.0% on time and its weakest Jul–Sep 2026 at 57.1%, a swing of 33 points on roughly 57 flights a quarter. The twelve-month rate averages over that, so if you are flying in a weak quarter the quarter's own figure is the better guide.
- Jul–Sep 202530 flights90.0%
- Oct–Dec 202564 flights82.8%
- Jan–Mar 202675 flights85.1%
- Apr–Jun 202681 flights70.0%
- Jul–Sep 202635 flights57.1%
Scale runs 50% to 95%.
By weekday, UA 1381 did best on Sunday at 84.4% on time and worst on Thursday at 70.5%. Each day rests on about 41 flights, so a gap of 14 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late UA 1381 runs when it is late
UA 1381 often beats the schedule: 97 of 283 completed flights, 34%, arrived 15 minutes or more early. The 64 late arrivals split 20 under half an hour, 17 between 30 and 60 minutes, and 27 an hour or more.
- 15+ min early97 flights34.3%
- Within 15 min122 flights43.1%
- 15–29 min late20 flights7.1%
- 30–59 min late17 flights6.0%
- 1–2 hours late19 flights6.7%
- 2+ hours late8 flights2.8%
Scale runs 0% to 100%.
Share of 283 completed flights by arrival against schedule.
14 of 63 late departures made up the time and arrived on time, 22% of them. In the other direction, 15 flights left on time yet arrived 15 minutes late or more, so that delay built up after pushback: in the air, in a holding pattern or on the ground at IAH.
The worst days
Worst days for UA 1381
The latest arrival of the period was on 9 July 2026, 6 hours 53 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. The same cause led on four of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 9 July 2026 | 6 hours 53 minutes | Late-arriving aircraft |
| 15 June 2026 | 6 hours 21 minutes | Late-arriving aircraft |
| 16 March 2026 | 4 hours 22 minutes | Late-arriving aircraft |
| 14 July 2026 | 3 hours 34 minutes | Late-arriving aircraft |
| 23 May 2026 | 3 hours 4 minutes | National Airspace System |
Delay causes
Why UA 1381 runs late
Late-arriving aircraft accounts for 53% of the 4,661 delay minutes carriers reported here, and the remaining four split what is left.
- 53%Late-arriving aircraft
- 31%National Airspace System
- 16%Carrier
- 0%Extreme weather
53% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 4,661 reported delay minutes here, that single category outweighs weather by 53 to one. The split is drawn from 4,661 delay minutes reported on UA 1381.
Cancellations are rare at 0.35%, below the national 1.89% and low enough to earn the plus on the grade. Roughly one flight in 100 is called off; the risk here is arriving late, not not arriving.
Connections and routes
What a delay on this flight costs
9.5% of arrivals land a full hour or more behind schedule, against 8.3% nationally. Ninety minutes is the honest minimum for a connection here, and two hours if the onward flight is on a separate ticket.
The 1,208 miles between these two airports put this in the middle of the US network, around two and a half to three hours of block time. That is enough cruise to absorb a ten-minute late pushback and not enough to absorb thirty.
The same number turns up on nine other city pairs in the data, including ORD to DCA (218), IAH to ABQ (124) and IAH to LAX (53), but none flew often enough under UA 1381 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to DCA to IAH only.
One caution: this is a thin sample. 285 flights over twelve months is enough to clear this site's floor but not enough to pin the rate down tightly, and a single bad week moves it by more than a point. Treat the grade as a rough reading.
What to do with this
Booking UA 1381
For a booking, read UA 1381 as 77.4% on time with 0.35% cancelled over 285 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- DCA to IAH, every carrier and departure
- IAH to DCA, the return direction
- United Airlines 382 on the same route89.4%
- United Airlines 1450 on the same route92.8%
- United Airlines 697 on the same route90.5%
- United Airlines 1785 on the same route64.8%
- Ronald Reagan Washington National (DCA) delay statistics
- George Bush Intercontinental (IAH) delay statistics
- United Airlines on-time record
- Every United Airlines flight number with a record
- The most and least reliable flight numbers in the US
- Why the first flight of the morning is statistically safest
A flight number here means United Airlines’s own number as it reports to the DOT. How the figures are computed is on the methodology page.
Source: US DOT Bureau of Transportation Statistics, on-time performance data, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.