ON TIMEBOARD

UA 1439 on time

United Airlines 1439: Dallas to Newark at 8:27 p.m.; Houston to Dallas at 4:20 p.m. (past 12 months). Figures below the title are for DFW → EWR, its busiest leg

On time
66%
212 flights · likely 59–72%
Cancelled
2.8%
of scheduled flights
Typical arrival
−4 min
median vs schedule
When late
+83 min
average delay
Similar flights
73%
UA, same route & hour

About 1 in 3 UA 1439 flights from Dallas arrived 15+ minutes late, diverted or cancelled over the past year (34%); 2.8% were cancelled. The typical flight landed 4 minutes early.

UA 1439: DFW → EWR

Scheduled to leave Dallas at 8:27 p.m. local time. Over the past year it arrived on time 66% of the time (212 flights), worse than other UA flights on the route at that hour (73%). Last seen in the data Aug 10, 2026.

Usually United Airlines's last flight of the day from Dallas to Newark (100% of days). United Airlines's last DFW–EWR flight was cancelled 3.8% of the time, against 2.6% for its earlier ones. If it's cancelled, the next United Airlines flight is usually around 6:00 a.m. the next morning.

Month by month

30%65%100%Sep 2025: 65% on time (26 flights)65SepOct 2025: 74% on time (27 flights)74OctNov 2025: 54% on time (26 flights)54NovDec 2025: 74% on time (31 flights)74DecJan 2026: too few flights (5 flights)JanFeb 2026: too few flights (13 flights)FebMar 2026: too few flights (2 flights)MarApr 2026: too few flights (1 flights)AprMay 2026: 72% on time (25 flights)72MayJun 2026: 58% on time (26 flights)58JunJul 2026: 43% on time (23 flights)43JulAug 2026: too few flights (7 flights)Aug

By day of week

DayFlightsOn time
Monday3770%
Tuesday2681%
Wednesday3269%
Thursday3551%
Friday3667%
Saturday10—
Sunday3656%

Why it was late

Late inbound plane 56%Air traffic & airport (NAS) 25%Airline (crew, maintenance, ops) 18%Severe weather 1%

All flights DFW → EWR · Connecting off UA 1439? Check the risk

UA 1439: IAH → DFW

Scheduled to leave Houston at 4:20 p.m. local time. Over the past year it arrived on time 71% of the time (191 flights), in line with other UA flights on the route at that hour (72%). Last seen in the data Aug 31, 2026.

Month by month

40%70%100%Jan 2026: 78% on time (18 flights)78JanFeb 2026: 89% on time (27 flights)89FebMar 2026: 70% on time (23 flights)70MarApr 2026: too few flights (1 flights)AprMay 2026: 61% on time (31 flights)61MayJun 2026: 57% on time (30 flights)57JunJul 2026: 63% on time (30 flights)63JulAug 2026: 81% on time (31 flights)81Aug

By day of week

DayFlightsOn time
Monday2962%
Tuesday2572%
Wednesday2969%
Thursday3077%
Friday3067%
Saturday2277%
Sunday2673%

Why it was late

Air traffic & airport (NAS) 57%Airline (crew, maintenance, ops) 20%Late inbound plane 19%Severe weather 4%

All flights IAH → DFW · Connecting off UA 1439? Check the risk

Questions

How often is UA 1439 from DFW to EWR late?

United Airlines 1439 from Dallas/Fort Worth, TX to Newark, NJ arrived 15 or more minutes late, was diverted or was cancelled on 34% of 212 scheduled flights between September 2025 and August 2026. 2.8% were cancelled.

How often is UA 1439 from IAH to DFW late?

United Airlines 1439 from Houston, TX to Dallas/Fort Worth, TX arrived 15 or more minutes late, was diverted or was cancelled on 29% of 191 scheduled flights between September 2025 and August 2026. 1.6% 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.