Flight number record
UA 1775
United Airlines · Washington to Chicago
- Route
- IAD → ORD
- Departs
- 08:20
- Flights
- 341
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s UA 1775, check with United Airlines.
UA 1775 earns a B+. More than four flights in five arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 7 points better than the national rate of 77.3%. When something does go wrong the average delay runs roughly 40 minutes. That rests on 341 flights, with a median arrival 3 minutes early.
Set against the rest of the country, UA 1775's record is 7 points better than the US average of 77.3%. That gap is worth roughly 68 fewer late arrivals for every thousand flights.
Key figures
On time
84.1%
Arrivals under 15 minutes late, of 339 completed flights
Avg delay
39 min
Across delayed arrivals only, not all flights
Cancelled
0.59%
National rate is 1.89%
1 hour+ late
2.4%
National rate is 8.3%
These figures cover 341 flights between September 2025 and August 2026. The median arrival is 3 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 1775 flies
UA 1775 flies IAD to ORD without a single fixed slot. Its most common scheduled departure was 08:20, used on 159 of 341 flights, with 08:15 (121 flights) and 08:30 (50 flights) next.
- Departs 08:20159 flights46.6%
- Departs 08:15121 flights35.5%
- Departs 08:3050 flights14.7%
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 08:20 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 83.9%, and UA 1775 runs level with that at 84.1%. 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 1775 next to IAD to ORD
Every carrier on IAD to ORD combined arrived on time 74.7% of the time across 2,106 flights, so UA 1775 is 9 points ahead of it. Across its whole network United Airlines managed 78.8%, which this flight beats by 5 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| UA 1775thin sample | 341 | 84.1% | 39 min | 0.59% | B+ |
| All United Airlines on IAD–ORD | 2,106 | 74.7% | 79 min | 0.90% | C+ |
| All carriers on IAD–ORD | 2,106 | 74.7% | 79 min | 0.90% | C+ |
| United Airlines, whole network | 830,825 | 78.8% | 73 min | 1.02% | B |
Across the year
UA 1775 quarter by quarter
Quarter by quarter UA 1775 held fairly steady: 83.7% in Oct–Dec 2025, 78.7% in Jan–Mar 2026, 86.8% in Apr–Jun 2026 and 86.9% in Jul–Sep 2026. A spread of 8 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.
- Jul–Sep 20256 flights—
- Oct–Dec 202592 flights83.7%
- Jan–Mar 202690 flights78.7%
- Apr–Jun 202691 flights86.8%
- Jul–Sep 202662 flights86.9%
Scale runs 70% to 90%. Rows with fewer than 30 flights show a dash.
By weekday, UA 1775 did best on Wednesday at 89.6% on time and worst on Sunday at 75.0%. Each day rests on about 49 flights, so a gap of 15 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late UA 1775 runs when it is late
Most of the lateness is short. 29 of the 54 late arrivals were under half an hour behind, and 8 reached an hour or more.
- 15+ min early63 flights18.6%
- Within 15 min222 flights65.5%
- 15–29 min late29 flights8.6%
- 30–59 min late17 flights5.0%
- 1–2 hours late6 flights1.8%
- 2+ hours late2 flights0.6%
Scale runs 0% to 100%.
Share of 339 completed flights by arrival against schedule.
Time lost at the gate mostly stays lost. Of 23 departures that left 15 minutes late or more, only 1 made it up before arrival. In the other direction, 32 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 ORD.
The worst days
Worst days for UA 1775
The latest arrival of the period was on 7 December 2025, 2 hours 16 minutes behind schedule; most of its delay minutes were filed as national airspace system delay. The same cause led on three of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 7 December 2025 | 2 hours 16 minutes | National Airspace System |
| 6 June 2026 | 2 hours 4 minutes | Carrier |
| 28 May 2026 | 1 hour 46 minutes | Carrier |
| 25 January 2026 | 1 hour 39 minutes | National Airspace System |
| 24 May 2026 | 1 hour 31 minutes | National Airspace System |
Delay causes
Why UA 1775 runs late
National Airspace System accounts for 71% of the 2,080 delay minutes carriers reported here, and the remaining four split what is left.
- 71%National Airspace System
- 29%Carrier
71% 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 1,487 minutes out of 2,080, against a national NAS share of 21%. The split is drawn from 2,080 delay minutes reported on UA 1775.
Cancellations are rare at 0.59%, 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
Badly late arrivals are rare here: only 2.4% 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 588 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 ORD to FLL (71), ORD to LGA (58) and ORD to PNS (19), but none flew often enough under UA 1775 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to IAD to ORD only.
One caution: this is a thin sample. 341 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 1775
For a booking, read UA 1775 as 84.1% on time with 0.59% cancelled over 341 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- IAD to ORD, every carrier and departure
- ORD to IAD, the return direction
- United Airlines 2497 on the same route46.5%
- United Airlines 2331 on the same route79.8%
- United Airlines 1738 on the same route78.2%
- Washington Dulles International (IAD) delay statistics
- Chicago O'Hare International (ORD) 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.