Flight number record
UA 1077
United Airlines · Chicago to Washington
- Route
- ORD → DCA
- Departs
- 06:00
- Flights
- 315
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s UA 1077, check with United Airlines.
UA 1077 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 13 points better than the national rate of 77.3%. When something does go wrong the average delay runs roughly 40 minutes. That rests on 315 flights, with a median arrival 13 minutes early.
Set against the rest of the country, UA 1077's record is 13 points better than the US average of 77.3%. That gap is worth roughly 133 fewer late arrivals for every thousand flights.
Key figures
On time
90.6%
Arrivals under 15 minutes late, of 309 completed flights
Avg delay
39 min
Across delayed arrivals only, not all flights
Cancelled
1.90%
National rate is 1.89%
1 hour+ late
1.6%
National rate is 8.3%
These figures cover 315 flights between September 2025 and August 2026. The median arrival is 13 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 1077 flies
UA 1077 is scheduled to leave Chicago (ORD) at 06:00 local time and reach Washington (DCA) at 08:58. That slot held for 261 of the 315 scheduled departures in the data, so the figures below describe one steady operation rather than a number that moved around the clock.
- Departs 06:00261 flights82.9%
- Departs 07:0052 flights16.5%
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 06:00 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and UA 1077 runs level with that at 90.6%. 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 1077 next to ORD to DCA
Every carrier on ORD to DCA combined arrived on time 69.0% of the time across 7,104 flights, so UA 1077 is 22 points ahead of it. United flew 3,411 flights on the same city pair under all its flight numbers, including this one, and those ran 70.1% on time. Across its whole network United Airlines managed 78.8%, which this flight beats by 12 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| UA 1077thin sample | 315 | 90.6% | 39 min | 1.90% | A |
| All United Airlines on ORD–DCA | 3,411 | 70.1% | 74 min | 2.14% | C |
| All carriers on ORD–DCA | 7,104 | 69.0% | 80 min | 3.04% | C− |
| United Airlines, whole network | 830,825 | 78.8% | 73 min | 1.02% | B |
Across the year
UA 1077 quarter by quarter
UA 1077 did not run the same all year. Its best quarter was Oct–Dec 2025 at 98.6% on time and its weakest Apr–Jun 2026 at 82.9%, a swing of 16 points on roughly 79 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 202526 flights—
- Oct–Dec 202573 flights98.6%
- Jan–Mar 202674 flights89.0%
- Apr–Jun 202683 flights82.9%
- Jul–Sep 202659 flights91.4%
Scale runs 75% to 100%. Rows with fewer than 30 flights show a dash.
By weekday, UA 1077 ranged from 88.0% on Thursday to 95.9% on Wednesday. With about 45 flights behind each day, a spread of 8 points is inside normal variation, so the day you fly is not worth changing for this flight.
Arrival by arrival
How late UA 1077 runs when it is late
UA 1077 often beats the schedule: 133 of 309 completed flights, 43%, arrived 15 minutes or more early. Most of the lateness is short. 18 of the 29 late arrivals were under half an hour behind, and 5 reached an hour or more.
- 15+ min early133 flights43.0%
- Within 15 min147 flights47.6%
- 15–29 min late18 flights5.8%
- 30–59 min late6 flights1.9%
- 1–2 hours late4 flights1.3%
- 2+ hours late1 flights0.3%
Scale runs 0% to 100%.
Share of 309 completed flights by arrival against schedule.
Only 12 of 309 completed flights left 15 minutes late or more, too few to say how often the time is made up.
The worst days
Worst days for UA 1077
The latest arrival of the period was on 12 May 2026, 3 hours 3 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. The five worst days are spread across May, July, February, August and April, with no single month standing out.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 12 May 2026 | 3 hours 3 minutes | Late-arriving aircraft |
| 6 July 2026 | 1 hour 30 minutes | Carrier |
| 27 February 2026 | 1 hour 11 minutes | Carrier |
| 16 August 2026 | 1 hour 11 minutes | National Airspace System |
| 10 April 2026 | 1 hour 9 minutes | Late-arriving aircraft |
Delay causes
Why UA 1077 runs late
National Airspace System accounts for 49% of the 1,127 delay minutes carriers reported here, and the remaining four split what is left.
- 49%National Airspace System
- 28%Late-arriving aircraft
- 22%Carrier
- 1%Extreme weather
49% 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 555 minutes out of 1,127, against a national NAS share of 21%. The split is drawn from 1,127 delay minutes reported on UA 1077.
Cancellations sit at 1.90% against a national 1.89%, which is ordinary. Diversions add another 0.00%.
Connections and routes
What a delay on this flight costs
Badly late arrivals are rare here: only 1.6% 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 612 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 eight other city pairs in the data, including DCA to IAH (108), IAH to RNO (5) and SAT to DEN (4), but none flew often enough under UA 1077 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to ORD to DCA only.
One caution: this is a thin sample. 315 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 1077
For a booking, read UA 1077 as 90.6% on time with 1.90% cancelled over 315 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- ORD to DCA, every carrier and departure
- DCA to ORD, the return direction
- American Airlines 2345 on the same route76.8%
- United Airlines 1369 on the same route48.4%
- United Airlines 752 on the same route61.8%
- Chicago O'Hare International (ORD) delay statistics
- Ronald Reagan Washington National (DCA) 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 to read this site: grades, sample sizes, and honest caveats
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.