Flight number record
UA 602
United Airlines · Chicago to Phoenix
- Route
- ORD → PHX
- Departs
- 19:55
- Flights
- 359
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s UA 602, check with United Airlines.
UA 602 sits in the middle of the pack with a C. About seven flights in ten arrive on time by the DOT's definition, 9 points worse than the national rate of 77.3%. The late ones land a little over an hour behind schedule. That rests on 359 flights, with a median arrival 3 minutes early.
The national on-time rate over the same period is 77.3%, so UA 602 runs 9 points behind the country as a whole. Across a thousand flights that is about 93 extra late arrivals.
Key figures
On time
68.0%
Arrivals under 15 minutes late, of 350 completed flights
Avg delay
76 min
Across delayed arrivals only, not all flights
Cancelled
1.39%
National rate is 1.89%
1 hour+ late
13.4%
National rate is 8.3%
These figures cover 359 flights between September 2025 and August 2026. Beyond the headline rate, 13.4% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
Fare search by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
Schedule
When UA 602 flies
UA 602 flies ORD to PHX without a single fixed slot. Its most common scheduled departure was 19:55, used on 73 of 359 flights, with 20:30 (66 flights) and 19:39 (36 flights) next.
- Departs 19:5573 flights20.3%
- Departs 20:3066 flights18.4%
- Departs 19:3936 flights10.0%
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 19:55 departure sits in the 5pm–8pm window. Across every US flight scheduled in that window the on-time rate is 68.0%, and UA 602 runs level with that at 68.0%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.
Timetable by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
Against the route
UA 602 next to ORD to PHX
Every carrier on ORD to PHX combined arrived on time 72.4% of the time across 5,631 flights, so UA 602 is 4 points behind it. United flew 1,989 flights on the same city pair under all its flight numbers, including this one, and those ran 78.3% on time. Across its whole network United Airlines managed 78.8%, which this flight trails by 11 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| UA 602thin sample | 359 | 68.0% | 76 min | 1.39% | C |
| All United Airlines on ORD–PHX | 1,989 | 78.3% | 73 min | 0.55% | B+ |
| All carriers on ORD–PHX | 5,631 | 72.4% | 82 min | 1.63% | C |
| United Airlines, whole network | 830,825 | 78.8% | 73 min | 1.02% | B |
Across the year
UA 602 quarter by quarter
UA 602 did not run the same all year. Its best quarter was Jan–Mar 2026 at 77.3% on time and its weakest Apr–Jun 2026 at 61.5%, a swing of 16 points on roughly 90 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 202529 flights—
- Oct–Dec 202587 flights65.1%
- Jan–Mar 202690 flights77.3%
- Apr–Jun 202691 flights61.5%
- Jul–Sep 202662 flights62.5%
Scale runs 55% to 85%. Rows with fewer than 30 flights show a dash.
By weekday, UA 602 did best on Saturday at 77.8% on time and worst on Sunday at 61.2%. Each day rests on about 51 flights, so a gap of 17 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late UA 602 runs when it is late
UA 602 often beats the schedule: 107 of 350 completed flights, 31%, arrived 15 minutes or more early. The 112 late arrivals split 32 under half an hour, 33 between 30 and 60 minutes, and 47 an hour or more.
- 15+ min early107 flights30.6%
- Within 15 min131 flights37.4%
- 15–29 min late32 flights9.1%
- 30–59 min late33 flights9.4%
- 1–2 hours late26 flights7.4%
- 2+ hours late21 flights6.0%
Scale runs 0% to 100%.
Share of 350 completed flights by arrival against schedule.
33 of 124 late departures made up the time and arrived on time, 27% of them. In the other direction, 21 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 PHX.
The worst days
Worst days for UA 602
The latest arrival of the period was on 30 November 2025, 5 hours 58 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). On three of the five worst days the largest share was filed as a late-arriving aircraft.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 30 November 2025 | 5 hours 58 minutes | Carrier |
| 11 June 2026 | 5 hours 8 minutes | Late-arriving aircraft |
| 2 April 2026 | 4 hours 48 minutes | Late-arriving aircraft |
| 10 March 2026 | 4 hours 39 minutes | Extreme weather |
| 10 June 2026 | 4 hours 24 minutes | Late-arriving aircraft |
Delay causes
Why UA 602 runs late
Late-arriving aircraft accounts for 56% of the 8,477 delay minutes carriers reported here, and the remaining four split what is left.
- 56%Late-arriving aircraft
- 19%Carrier
- 18%National Airspace System
- 7%Extreme weather
56% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 8,477 reported delay minutes here, that single category outweighs weather by 8 to one. The split is drawn from 8,477 delay minutes reported on UA 602.
Cancellations sit at 1.39% against a national 1.89%, which is ordinary. Diversions add another 1.11%.
Connections and routes
What a delay on this flight costs
13.4% 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 1,440 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 PIT to ORD (128), LGA to ORD (36) and RDU to ORD (24), but none flew often enough under UA 602 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to ORD to PHX only.
One caution: this is a thin sample. 359 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 602
For a booking, UA 602 is a flight to put a long connection behind. 13.4% 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
- ORD to PHX, every carrier and departure
- PHX to ORD, the return direction
- United Airlines 455 on the same route83.8%
- Chicago O'Hare International (ORD) delay statistics
- Phoenix Sky Harbor International (PHX) 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.