Flight number record
UA 1422
United Airlines · Denver to St. Louis
- Route
- DEN → STL
- Departs
- 17:40
- Flights
- 306
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s UA 1422, check with United Airlines.
UA 1422 sits in the middle of the pack with a C+. About seven flights in ten arrive on time by the DOT's definition, 8 points worse than the national rate of 77.3%. The late ones land a little over an hour behind schedule. That rests on 306 flights, with a median arrival 1 minute early.
The national on-time rate over the same period is 77.3%, so UA 1422 runs 8 points behind the country as a whole. Across a thousand flights that is about 83 extra late arrivals.
Key figures
On time
69.0%
Arrivals under 15 minutes late, of 303 completed flights
Avg delay
73 min
Across delayed arrivals only, not all flights
Cancelled
0.65%
National rate is 1.89%
1 hour+ late
13.2%
National rate is 8.3%
These figures cover 306 flights between September 2025 and August 2026. Beyond the headline rate, 13.2% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Schedule
When UA 1422 flies
UA 1422 flies DEN to STL without a single fixed slot. Its most common scheduled departure was 17:40, used on 61 of 306 flights, with 17:34 (46 flights) and 17:35 (39 flights) next.
- Departs 17:4061 flights19.9%
- Departs 17:3446 flights15.0%
- Departs 17:3539 flights12.7%
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 17:40 departure sits in the 5pm–8pm window. Across every US flight scheduled in that window the on-time rate is 68.0%, and UA 1422 runs level with that at 69.0%. 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 1422 next to DEN to STL
Every carrier on DEN to STL combined arrived on time 77.7% of the time across 3,699 flights, so UA 1422 is 9 points behind it. United flew 1,116 flights on the same city pair under all its flight numbers, including this one, and those ran 78.0% on time. Across its whole network United Airlines managed 78.8%, which this flight trails by 10 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| UA 1422thin sample | 306 | 69.0% | 73 min | 0.65% | C+ |
| All United Airlines on DEN–STL | 1,116 | 78.0% | 67 min | 0.36% | B+ |
| All carriers on DEN–STL | 3,699 | 77.7% | 61 min | 0.49% | B+ |
| United Airlines, whole network | 830,825 | 78.8% | 73 min | 1.02% | B |
Across the year
UA 1422 quarter by quarter
UA 1422 did not run the same all year. Its best quarter was Jan–Mar 2026 at 80.9% on time and its weakest Jul–Sep 2026 at 46.7%, a swing of 34 points on roughly 61 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 flights76.7%
- Oct–Dec 202555 flights80.0%
- Jan–Mar 202690 flights80.9%
- Apr–Jun 202670 flights60.9%
- Jul–Sep 202661 flights46.7%
Scale runs 40% to 85%.
By weekday, UA 1422 did best on Monday at 77.3% on time and worst on Saturday at 61.0%. Each day rests on about 44 flights, so a gap of 16 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late UA 1422 runs when it is late
The 94 late arrivals split 24 under half an hour, 30 between 30 and 60 minutes, and 40 an hour or more.
- 15+ min early47 flights15.5%
- Within 15 min162 flights53.5%
- 15–29 min late24 flights7.9%
- 30–59 min late30 flights9.9%
- 1–2 hours late27 flights8.9%
- 2+ hours late13 flights4.3%
Scale runs 0% to 100%.
Share of 303 completed flights by arrival against schedule.
12 of 86 late departures made up the time and arrived on time, 14% of them. In the other direction, 20 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 STL.
The worst days
Worst days for UA 1422
The latest arrival of the period was on 6 March 2026, 7 hours 33 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. Three of the five worst days fell in July 2026.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 6 March 2026 | 7 hours 33 minutes | Late-arriving aircraft |
| 9 July 2026 | 7 hours 28 minutes | Carrier |
| 22 July 2026 | 5 hours 36 minutes | Late-arriving aircraft |
| 29 July 2026 | 3 hours 20 minutes | Late-arriving aircraft |
| 15 August 2026 | 3 hours 9 minutes | Late-arriving aircraft |
Delay causes
Why UA 1422 runs late
Late-arriving aircraft accounts for 58% of the 6,820 delay minutes carriers reported here, and the remaining four split what is left.
- 58%Late-arriving aircraft
- 20%Carrier
- 18%National Airspace System
- 4%Extreme weather
58% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 6,820 reported delay minutes here, that single category outweighs weather by 14 to one. The split is drawn from 6,820 delay minutes reported on UA 1422.
Cancellations are rare at 0.65%, 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
13.2% 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 770 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 MCO to EWR (37), IAD to BTV (20) and DEN to RNO (1), but none flew often enough under UA 1422 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to DEN to STL only.
One caution: this is a thin sample. 306 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 1422
For a booking, UA 1422 is a flight to put a long connection behind. 13.2% of its completed flights arrived an hour or more late, which a short layover will not absorb. If the onward flight is on a separate ticket, the risk sits with you.
Related
Where to go next
- DEN to STL, every carrier and departure
- STL to DEN, the return direction
- United Airlines 652 on the same route85.6%
- Frontier Airlines 3302 on the same route82.5%
- Denver International (DEN) delay statistics
- St. Louis Lambert International (STL) 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.