Flight number record
UA 1077
United Airlines · Chicago to Washington
- Route
- ORD → DCA
- Departs
- 06:00
- Flights
- 309
- Period
- July 2025 to June 2026
Historical statistics for July 2025 to June 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 14 points better than the national rate of 77.6%. When something does go wrong the average delay runs roughly 35 minutes. That rests on 309 flights, with a median arrival 14 minutes early.
Set against the rest of the country, UA 1077's record is 14 points better than the US average of 77.6%. That gap is worth roughly 135 fewer late arrivals for every thousand flights.
Key figures
On time
91.1%
Arrivals under 15 minutes late, of 303 completed flights
Avg delay
37 min
Across delayed arrivals only, not all flights
Cancelled
1.94%
National rate is 1.81%
1 hour+ late
1.0%
National rate is 8.1%
These figures cover 309 flights between July 2025 and June 2026. The median arrival is 14 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.
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 275 of the 309 scheduled departures in the data, so the figures below describe one steady operation rather than a number that moved around the clock.
- Departs 06:00275 flights89.0%
- Departs 07:0032 flights10.4%
Scale runs 0% to 100%. Rows with fewer than 30 flights show a dash.
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 91.1%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.
Against the route
UA 1077 next to ORD to DCA
Every carrier on ORD to DCA combined arrived on time 69.1% of the time across 6,987 flights, so UA 1077 is 22 points ahead of it. United flew 3,393 flights on the same city pair under all its flight numbers, including this one, and those ran 70.6% on time. Across its whole network United Airlines managed 79.0%, which this flight beats by 12 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| UA 1077thin sample | 309 | 91.1% | 37 min | 1.94% | A |
| All United Airlines on ORD–DCA | 3,393 | 70.6% | 75 min | 1.80% | C |
| All carriers on ORD–DCA | 6,987 | 69.1% | 82 min | 3.05% | C− |
| United Airlines, whole network | 821,041 | 79.0% | 72 min | 1.01% | 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 77 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 202579 flights94.9%
- Oct–Dec 202573 flights98.6%
- Jan–Mar 202674 flights89.0%
- Apr–Jun 202683 flights82.9%
Scale runs 75% to 100%. Rows with fewer than 30 flights show a dash.
By weekday, UA 1077 ranged from 87.8% on Thursday to 95.8% on Sunday. With about 44 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.
Delay causes
Why UA 1077 runs late
One category carries most of the weight here. National Airspace System accounts for 45% of the 988 delay minutes carriers reported, and the remaining four split what is left. The split is by minutes rather than by flights, so a few very long delays count for as much as many short ones.
- 45%National Airspace System
- 34%Late-arriving aircraft
- 19%Carrier
- 2%Extreme weather
34% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. That is a cascade, and cascades start small and grow through the day. Across 988 reported delay minutes here, that single category outweighs weather by 22 to one. It is the strongest argument for booking the first departure of the morning, when the aircraft has been sitting at the gate overnight with nothing to inherit. The split is drawn from 988 delay minutes reported on UA 1077.
Cancellations sit at 1.94% against a national 1.81%, 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 1.0% land an hour or more behind schedule, against 8.1% 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. It is also long enough that the aircraft usually flies three or four legs a day rather than six, which slows how fast delay compounds.
The same number turns up on seven other city pairs in the data, including DCA to IAH (108), IAH to FCA (7) and IAH to RNO (5), 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. 309 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 91.1% on time with 1.94% cancelled over 309 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 route73.3%
- United Airlines 1369 on the same route49.2%
- United Airlines 752 on the same route63.5%
- American Airlines 523 on the same route79.5%
- 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
- 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, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.