ON TIMEBOARD

UA 598 on time

United Airlines 598: Denver to New York at 11:30 a.m. (past 12 months)

On time
66%
258 flights · likely 60–71%
Cancelled
2.7%
of scheduled flights
Typical arrival
−2 min
median vs schedule
When late
+66 min
average delay
Similar flights
68%
UA, same route & hour

About 1 in 3 UA 598 flights from Denver arrived 15+ minutes late, diverted or cancelled over the past year (35%); 2.7% were cancelled. The typical flight landed 2 minutes early.

UA 598: DEN → LGA

Scheduled to leave Denver at 11:30 a.m. local time. Over the past year it arrived on time 66% of the time (258 flights), in line with other UA flights on the route at that hour (68%). Last seen in the data Aug 31, 2026.

Month by month

40%70%100%Sep 2025: too few flights (6 flights)SepOct 2025: 67% on time (27 flights)67OctNov 2025: 63% on time (24 flights)63NovDec 2025: 60% on time (25 flights)60DecJan 2026: too few flights (4 flights)JanFeb 2026: too few flights (14 flights)FebMar 2026: 56% on time (27 flights)56MarApr 2026: 73% on time (26 flights)73AprMay 2026: 77% on time (26 flights)77MayJun 2026: 62% on time (26 flights)62JunJul 2026: 67% on time (27 flights)67JulAug 2026: 62% on time (26 flights)62Aug

By day of week

DayFlightsOn time
Monday4556%
Tuesday4269%
Wednesday4065%
Thursday4367%
Friday4473%
Sunday4464%

Why it was late

Air traffic & airport (NAS) 77%Late inbound plane 15%Airline (crew, maintenance, ops) 8%Severe weather 1%

All flights DEN → LGA · Connecting off UA 598? Check the risk

Questions

How often is UA 598 from DEN to LGA late?

United Airlines 598 from Denver, CO to New York, NY arrived 15 or more minutes late, was diverted or was cancelled on 35% of 258 scheduled flights between September 2025 and August 2026. 2.7% 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.