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United Airlines / DEN → PHX

UA 1686 on time

United Airlines 1686: Denver to Phoenix at 11:25 a.m.; Phoenix to Chicago at 2:48 p.m. (past 12 months). Figures below the title are for DEN → PHX, its busiest leg

On time
87%
365 flights · likely 83–90%
Cancelled
0.0%
of scheduled flights
Typical arrival
−7 min
median vs schedule
When late
+52 min
average delay
Similar flights
87%
UA, same route & hour

About 1 in 7 UA 1686 flights from Denver arrived 15+ minutes late, diverted or cancelled over the past year (13%); 0.0% were cancelled. The typical flight landed 7 minutes early.

UA 1686: DEN → PHX

Scheduled to leave Denver at 11:25 a.m. local time. Over the past year it arrived on time 87% of the time (365 flights), in line with other UA flights on the route at that hour (87%). Last seen in the data Aug 31, 2026.

Month by month

40%70%100%Sep 2025: 80% on time (30 flights)80SepOct 2025: 90% on time (31 flights)90OctNov 2025: 80% on time (30 flights)80NovDec 2025: 84% on time (31 flights)84DecJan 2026: 87% on time (31 flights)87JanFeb 2026: 93% on time (28 flights)93FebMar 2026: 90% on time (31 flights)90MarApr 2026: 83% on time (30 flights)83AprMay 2026: 90% on time (31 flights)90MayJun 2026: 83% on time (30 flights)83JunJul 2026: 90% on time (31 flights)90JulAug 2026: 87% on time (31 flights)87Aug

By day of week

DayFlightsOn time
Monday5387%
Tuesday5287%
Wednesday5285%
Thursday5279%
Friday5285%
Saturday5294%
Sunday5290%

Why it was late

Airline (crew, maintenance, ops) 40%Late inbound plane 31%Air traffic & airport (NAS) 30%

All flights DEN → PHX · Connecting off UA 1686? Check the risk

UA 1686: PHX → ORD

Scheduled to leave Phoenix at 2:48 p.m. local time. Over the past year it arrived on time 57% of the time (229 flights), in line with other UA flights on the route at that hour (57%). Last seen in the data Aug 10, 2026.

Month by month

40%70%100%Jun 2025: 72% on time (25 flights)72JunSep 2025: too few flights (5 flights)SepOct 2025: 52% on time (21 flights)52OctNov 2025: 50% on time (28 flights)50NovDec 2025: too few flights (14 flights)DecJan 2026: too few flights (5 flights)JanMar 2026: 71% on time (24 flights)71MarApr 2026: 57% on time (30 flights)57AprMay 2026: 68% on time (31 flights)68MayJun 2026: 53% on time (30 flights)53JunJul 2026: 55% on time (31 flights)55JulAug 2026: too few flights (10 flights)Aug

By day of week

DayFlightsOn time
Monday3551%
Tuesday3253%
Wednesday3158%
Thursday3367%
Friday2948%
Saturday3465%
Sunday3557%

Why it was late

Air traffic & airport (NAS) 55%Late inbound plane 31%Airline (crew, maintenance, ops) 13%

All flights PHX → ORD · Connecting off UA 1686? Check the risk

Questions

How often is UA 1686 from DEN to PHX late?

United Airlines 1686 from Denver, CO to Phoenix, AZ arrived 15 or more minutes late, was diverted or was cancelled on 13% of 365 scheduled flights between September 2025 and August 2026. 0.0% were cancelled.

How often is UA 1686 from PHX to ORD late?

United Airlines 1686 from Phoenix, AZ to Chicago, IL arrived 15 or more minutes late, was diverted or was cancelled on 43% of 229 scheduled flights between September 2025 and August 2026. 0.4% were cancelled.

Flight numbers change. Figures cover flights with this airline, number and route only. "Likely range" is the 95% interval for the true on-time rate given the number of flights. This is history, not live status: check United Airlines for today's flight. Method.