Flight number record
UA 700
United Airlines · Houston to Newark
- Route
- IAH → EWR
- Departs
- 16:47
- Flights
- 273
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s UA 700, check with United Airlines.
UA 700 draws a D. Roughly one flight in three arrives at least 15 minutes late, and the typical late arrival is an hour and a half behind schedule. Build slack into anything you connect to. That rests on 273 flights, with a median arrival 4 minutes late.
The national on-time rate over the same period is 77.3%, so UA 700 runs 14 points behind the country as a whole. Across a thousand flights that is about 138 extra late arrivals.
Key figures
On time
63.5%
Arrivals under 15 minutes late, of 266 completed flights
Avg delay
85 min
Across delayed arrivals only, not all flights
Cancelled
1.47%
National rate is 1.89%
1 hour+ late
16.2%
National rate is 8.3%
These figures cover 273 flights between September 2025 and August 2026. Beyond the headline rate, 16.2% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Schedule
When UA 700 flies
UA 700 flies IAH to EWR without a single fixed slot. Its most common scheduled departure was 16:47, used on 81 of 273 flights, with 16:48 (38 flights) and 16:25 (37 flights) next.
- Departs 16:4781 flights29.7%
- Departs 16:4838 flights13.9%
- Departs 16:2537 flights13.6%
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 16:47 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 71.9%, and UA 700 runs 8 points worse at 63.5%. 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 700 next to IAH to EWR
Every carrier on IAH to EWR combined arrived on time 75.4% of the time across 3,717 flights, so UA 700 is 12 points behind it. United flew 3,510 flights on the same city pair under all its flight numbers, including this one, and those ran 75.2% on time. Across its whole network United Airlines managed 78.8%, which this flight trails by 15 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| UA 700thin sample | 273 | 63.5% | 85 min | 1.47% | D |
| All United Airlines on IAH–EWR | 3,510 | 75.2% | 72 min | 1.57% | B |
| All carriers on IAH–EWR | 3,717 | 75.4% | 71 min | 1.86% | B |
| United Airlines, whole network | 830,825 | 78.8% | 73 min | 1.02% | B |
Across the year
UA 700 quarter by quarter
UA 700 did not run the same all year. Its best quarter was Jan–Mar 2026 at 73.3% on time and its weakest Jul–Sep 2026 at 48.3%, a swing of 25 points on roughly 68 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.
- Oct–Dec 202530 flights63.3%
- Jan–Mar 202690 flights73.3%
- Apr–Jun 202691 flights64.4%
- Jul–Sep 202662 flights48.3%
Scale runs 40% to 80%.
By weekday, UA 700 did best on Wednesday at 71.1% on time and worst on Thursday at 56.4%. Each day rests on about 39 flights, so a gap of 15 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late UA 700 runs when it is late
The 97 late arrivals split 26 under half an hour, 28 between 30 and 60 minutes, and 43 an hour or more.
- 15+ min early51 flights19.2%
- Within 15 min118 flights44.4%
- 15–29 min late26 flights9.8%
- 30–59 min late28 flights10.5%
- 1–2 hours late23 flights8.6%
- 2+ hours late20 flights7.5%
Scale runs 0% to 100%.
Share of 266 completed flights by arrival against schedule.
Time lost at the gate mostly stays lost. Of 87 departures that left 15 minutes late or more, only 9 made it up before arrival. In the other direction, 19 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 EWR.
The worst days
Worst days for UA 700
The latest arrival of the period was on 7 March 2026, 14 hours 45 minutes behind schedule; most of its delay minutes were filed as extreme weather. On three of the five worst days the largest share was filed as national airspace system delay.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 7 March 2026 | 14 hours 45 minutes | Extreme weather |
| 5 July 2026 | 9 hours 19 minutes | Carrier |
| 27 August 2026 | 4 hours 40 minutes | National Airspace System |
| 14 June 2026 | 3 hours 52 minutes | National Airspace System |
| 27 July 2026 | 3 hours 35 minutes | National Airspace System |
Delay causes
Why UA 700 runs late
National Airspace System accounts for 56% of the 8,277 delay minutes carriers reported here, and the remaining four split what is left.
- 56%National Airspace System
- 17%Carrier
- 14%Late-arriving aircraft
- 14%Extreme weather
Extreme weather accounts for 14% of delay minutes, well above the single-digit share typical across the system. Weather delays are lumpy: they arrive as whole bad days rather than as a steady drag, so the quarterly figures above are the more useful view of the risk. The national share is 6%, so this operation carries roughly 2.2 times the usual weather exposure. The split is drawn from 8,277 delay minutes reported on UA 700.
Cancellations sit at 1.47% against a national 1.89%, which is ordinary. Diversions add another 1.10%.
Connections and routes
What a delay on this flight costs
16.2% 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 1,400 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 three other city pairs in the data, including SNA to IAH (180), IAD to DEN (55) and TPA to LAX (37), but none flew often enough under UA 700 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to IAH to EWR only.
One caution: this is a thin sample. 273 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 700
For a booking, UA 700 is a flight to put a long connection behind. 16.2% of its completed flights arrived an hour or more late, which a short layover will not absorb. If the onward flight is on a separate ticket, the risk sits with you.
Related
Where to go next
- IAH to EWR, every carrier and departure
- EWR to IAH, the return direction
- United Airlines 1886 on the same route88.5%
- United Airlines 404 on the same route66.6%
- United Airlines 1444 on the same route76.3%
- United Airlines 1397 on the same route73.2%
- United Airlines 1797 on the same route93.6%
- United Airlines 2608 on the same route59.1%
- George Bush Intercontinental (IAH) delay statistics
- Newark Liberty International (EWR) 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
- How often a connection fails at the major US hubs
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.