Flight number record
UA 2600
United Airlines · Houston to Los Angeles
- Route
- IAH → LAX
- Departs
- 07:20
- Flights
- 355
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s UA 2600, check with United Airlines.
UA 2600 earns an A+. Close to nine flights in ten arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 14 points better than the national rate of 77.3%. When something does go wrong the average delay runs roughly 40 minutes. That rests on 355 flights, with a median arrival 10 minutes early.
Set against the rest of the country, UA 2600's record is 14 points better than the US average of 77.3%. That gap is worth roughly 140 fewer late arrivals for every thousand flights.
Key figures
On time
91.3%
Arrivals under 15 minutes late, of 355 completed flights
Avg delay
38 min
Across delayed arrivals only, not all flights
Cancelled
0.00%
National rate is 1.89%
1 hour+ late
1.4%
National rate is 8.3%
These figures cover 355 flights between September 2025 and August 2026. The median arrival is 10 minutes early, which is the part an average hides: most flights here are fine, and the on-time rate is decided by a tail of badly late ones. On-time means under 15 minutes late, the DOT's own threshold.
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Schedule
When UA 2600 flies
UA 2600 flies IAH to LAX without a single fixed slot. Its most common scheduled departure was 07:20, used on 186 of 355 flights, with 07:25 (73 flights) next.
- Departs 07:20186 flights52.4%
- Departs 07:2573 flights20.6%
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 07:20 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and UA 2600 runs 2 points better at 91.3%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.
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Against the route
UA 2600 next to IAH to LAX
Every carrier on IAH to LAX combined arrived on time 84.1% of the time across 5,147 flights, so UA 2600 is 7 points ahead of it. United flew 3,421 flights on the same city pair under all its flight numbers, including this one, and those ran 85.7% on time. Across its whole network United Airlines managed 78.8%, which this flight beats by 13 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| UA 2600thin sample | 355 | 91.3% | 38 min | 0.00% | A+ |
| All United Airlines on IAH–LAX | 3,421 | 85.7% | 57 min | 0.20% | A+ |
| All carriers on IAH–LAX | 5,147 | 84.1% | 62 min | 0.45% | B+ |
| United Airlines, whole network | 830,825 | 78.8% | 73 min | 1.02% | B |
Across the year
UA 2600 quarter by quarter
UA 2600 did not run the same all year. Its best quarter was Jul–Sep 2025 at 100.0% on time and its weakest Jan–Mar 2026 at 87.5%, a swing of 13 points on roughly 71 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 flights100.0%
- Oct–Dec 202592 flights93.5%
- Jan–Mar 202680 flights87.5%
- Apr–Jun 202691 flights89.0%
- Jul–Sep 202662 flights91.9%
Scale runs 80% to 100%.
By weekday, UA 2600 did best on Sunday at 98.1% on time and worst on Saturday at 84.6%. Each day rests on about 51 flights, so a gap of 14 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late UA 2600 runs when it is late
UA 2600 often beats the schedule: 125 of 355 completed flights, 35%, arrived 15 minutes or more early. Most of the lateness is short. 20 of the 31 late arrivals were under half an hour behind, and 5 reached an hour or more.
- 15+ min early125 flights35.2%
- Within 15 min199 flights56.1%
- 15–29 min late20 flights5.6%
- 30–59 min late6 flights1.7%
- 1–2 hours late4 flights1.1%
- 2+ hours late1 flights0.3%
Scale runs 0% to 100%.
Share of 355 completed flights by arrival against schedule.
A late pushback is often recovered here: of 21 departures that left 15 minutes late or more, 8 still arrived on time. In the other direction, 18 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 LAX.
The worst days
Worst days for UA 2600
The latest arrival of the period was on 16 March 2026, 3 hours 23 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The same cause led on three of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 16 March 2026 | 3 hours 23 minutes | Carrier |
| 30 March 2026 | 1 hour 41 minutes | Late-arriving aircraft |
| 7 October 2025 | 1 hour 34 minutes | Late-arriving aircraft |
| 6 January 2026 | 1 hour 4 minutes | Carrier |
| 30 May 2026 | 1 hour | Carrier |
Delay causes
Why UA 2600 runs late
Carriers report a reason for every delay minute they cause, in five DOT categories. The split below is by minutes, not by number of flights, so a handful of very long weather delays weighs as much as many short ones. It covers 1,183 reported delay minutes.
- 40%Carrier
- 33%National Airspace System
- 27%Late-arriving aircraft
33% of delay minutes are charged to the National Airspace System: air traffic volume, runway configuration, ground stops. No carrier can price its way out of that, which is why airport choice moves the number here more than carrier choice does. That is 388 minutes out of 1,183, against a national NAS share of 21%. The split is drawn from 1,183 delay minutes reported on UA 2600.
Cancellations are rare at 0.00%, below the national 1.89% and low enough to earn the plus on the grade. Almost no flights are called off; the risk here is arriving late, not not arriving.
Connections and routes
What a delay on this flight costs
Badly late arrivals are rare here: only 1.4% land an hour or more behind schedule, against 8.3% nationally. Connections built on this flight are about as safe as US domestic connections get, though a cancelled flight still ignores every layover you give it.
The 1,379 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 one other city pair in the data, including RSW to LAX (10), but none flew often enough under UA 2600 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to IAH to LAX only.
One caution: this is a thin sample. 355 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 2600
For a booking, UA 2600 has one of the better records a US domestic flight can show: 91.3% on time and 0.00% cancelled. That is a base rate, not a promise about any single day.
Related
Where to go next
- IAH to LAX, every carrier and departure
- LAX to IAH, the return direction
- Delta Air Lines 1216 on the same route93.1%
- United Airlines 2460 on the same route89.0%
- United Airlines 1743 on the same route83.3%
- United Airlines 469 on the same route89.0%
- Frontier Airlines 1755 on the same route71.9%
- United Airlines 2095 on the same route76.7%
- George Bush Intercontinental (IAH) delay statistics
- Los Angeles International (LAX) 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
- Worst months to fly in the US, ranked by the data
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.