Flight number record
UA 1517
United Airlines · Dallas-Fort Worth to Chicago
- Route
- DFW → ORD
- Departs
- 19:27
- Flights
- 292
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s UA 1517, check with United Airlines.
UA 1517 draws a C−. About one flight in three arrives at least 15 minutes late, and the typical late arrival is close to two hours behind schedule. Build slack into anything you connect to. That rests on 292 flights, with a median arrival 2 minutes early.
The national on-time rate over the same period is 77.3%, so UA 1517 runs 12 points behind the country as a whole. Across a thousand flights that is about 118 extra late arrivals.
Key figures
On time
65.5%
Arrivals under 15 minutes late, of 278 completed flights
Avg delay
108 min
Across delayed arrivals only, not all flights
Cancelled
4.11%
National rate is 1.89%
1 hour+ late
20.5%
National rate is 8.3%
These figures cover 292 flights between September 2025 and August 2026. Beyond the headline rate, 20.5% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Schedule
When UA 1517 flies
UA 1517 flies DFW to ORD without a single fixed slot. Its most common scheduled departure was 19:27, used on 70 of 292 flights, with 19:30 (50 flights) and 19:17 (44 flights) next.
- Departs 19:2770 flights24.0%
- Departs 19:3050 flights17.1%
- Departs 19:1744 flights15.1%
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 19:27 departure sits in the 5pm–8pm window. Across every US flight scheduled in that window the on-time rate is 68.0%, and UA 1517 runs 3 points worse at 65.5%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.
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Against the route
UA 1517 next to DFW to ORD
Every carrier on DFW to ORD combined arrived on time 68.8% of the time across 7,115 flights, so UA 1517 is 3 points behind it. United flew 2,080 flights on the same city pair under all its flight numbers, including this one, and those ran 70.9% on time. Across its whole network United Airlines managed 78.8%, which this flight trails by 13 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| UA 1517thin sample | 292 | 65.5% | 108 min | 4.11% | C− |
| All United Airlines on DFW–ORD | 2,080 | 70.9% | 96 min | 1.78% | C |
| All carriers on DFW–ORD | 7,115 | 68.8% | 82 min | 2.75% | C |
| United Airlines, whole network | 830,825 | 78.8% | 73 min | 1.02% | B |
Across the year
UA 1517 quarter by quarter
UA 1517 did not run the same all year. Its best quarter was Jan–Mar 2026 at 71.2% on time and its weakest Jul–Sep 2026 at 57.9%, a swing of 13 points on roughly 73 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 20255 flights—
- Oct–Dec 202568 flights64.6%
- Jan–Mar 202677 flights71.2%
- Apr–Jun 202681 flights64.1%
- Jul–Sep 202661 flights57.9%
Scale runs 50% to 75%. Rows with fewer than 30 flights show a dash.
By weekday, UA 1517 did best on Tuesday at 79.5% on time and worst on Monday at 55.8%. Each day rests on about 42 flights, so a gap of 24 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late UA 1517 runs when it is late
UA 1517 often beats the schedule: 78 of 278 completed flights, 28%, arrived 15 minutes or more early. When UA 1517 is late it tends to be very late: 57 of its 96 late arrivals were an hour or more behind, and 33 were two hours or more.
- 15+ min early78 flights28.1%
- Within 15 min104 flights37.4%
- 15–29 min late20 flights7.2%
- 30–59 min late19 flights6.8%
- 1–2 hours late24 flights8.6%
- 2+ hours late33 flights11.9%
Scale runs 0% to 100%.
Share of 278 completed flights by arrival against schedule.
12 of 94 late departures made up the time and arrived on time, 13% of them. In the other direction, 14 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 1517
The latest arrival of the period was on 3 April 2026, 14 hours 49 minutes behind schedule; most of its delay minutes were filed as extreme weather. The five worst days are spread across April, November and May, with no single month standing out.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 3 April 2026 | 14 hours 49 minutes | Extreme weather |
| 29 November 2025 | 6 hours 26 minutes | National Airspace System |
| 25 May 2026 | 5 hours 9 minutes | Late-arriving aircraft |
| 10 May 2026 | 5 hours 1 minute | Late-arriving aircraft |
| 27 April 2026 | 4 hours 59 minutes | National Airspace System |
Delay causes
Why UA 1517 runs late
Late-arriving aircraft accounts for 62% of the 10,000 delay minutes carriers reported here, and the remaining four split what is left.
- 62%Late-arriving aircraft
- 26%National Airspace System
- 6%Extreme weather
- 6%Carrier
62% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 10,000 reported delay minutes here, that single category outweighs weather by 10 to one. The split is drawn from 10,361 delay minutes reported on UA 1517.
Cancellations run at 4.11%, against 1.89% nationally. That is about one flight in 25 cancelled outright. A cancelled flight is invisible in every on-time figure on this page, so the punctuality numbers above describe only the flights that actually operated.
Connections and routes
What a delay on this flight costs
20.5% 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 802 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 four other city pairs in the data, including SFO to DFW (55), PBI to DEN (19) and OGG to DEN (3), but none flew often enough under UA 1517 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to DFW to ORD only.
One caution: this is a thin sample. 292 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 1517
For a booking, the cancellation rate is the figure to plan around on UA 1517: 4.11% of its 292 scheduled flights did not operate. A late arrival costs close to two hours, but a cancellation costs the day, so leave a later option open.
Related
Where to go next
- DFW to ORD, every carrier and departure
- ORD to DFW, the return direction
- United Airlines 1564 on the same route58.8%
- American Airlines 1290 on the same route66.5%
- Dallas/Fort Worth International (DFW) 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
- 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, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.