ON TIMEBOARD
United Airlines / ATL → IAD

UA 632 on time

United Airlines 632: Atlanta to Washington at 9:35 a.m.; Washington to Hartford at 12:40 p.m. (past 12 months). Figures below the title are for ATL → IAD, its busiest leg

On time
86%
298 flights · likely 81–89%
Cancelled
1.7%
of scheduled flights
Typical arrival
−7 min
median vs schedule
When late
+63 min
average delay
Similar flights
87%
UA, same route & hour

About 1 in 7 UA 632 flights from Atlanta arrived 15+ minutes late, diverted or cancelled over the past year (14%); 1.7% were cancelled. The typical flight landed 7 minutes early.

UA 632: ATL → IAD

Scheduled to leave Atlanta at 9:35 a.m. local time. Over the past year it arrived on time 86% of the time (298 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: 97% on time (30 flights)97SepOct 2025: 87% on time (31 flights)87OctNov 2025: 76% on time (29 flights)76NovDec 2025: 92% on time (25 flights)92DecJan 2026: 71% on time (21 flights)71JanFeb 2026: 89% on time (18 flights)89FebMar 2026: 79% on time (29 flights)79MarApr 2026: 97% on time (30 flights)97AprMay 2026: 80% on time (25 flights)80MayJun 2026: 94% on time (18 flights)94JunJul 2026: 87% on time (15 flights)87JulAug 2026: 78% on time (27 flights)78Aug

By day of week

DayFlightsOn time
Monday4785%
Tuesday4188%
Wednesday2990%
Thursday4085%
Friday5188%
Saturday4088%
Sunday5078%

Why it was late

Airline (crew, maintenance, ops) 51%Late inbound plane 30%Air traffic & airport (NAS) 18%Severe weather 1%

All flights ATL → IAD · Connecting off UA 632? Check the risk

UA 632: IAD → BDL

Scheduled to leave Washington at 12:40 p.m. local time. Over the past year it arrived on time 88% of the time (152 flights), in line with other UA flights on the route at that hour (85%). Last seen in the data Aug 31, 2026.

Month by month

40%70%100%Mar 2026: too few flights (3 flights)MarApr 2026: 97% on time (29 flights)97AprMay 2026: 86% on time (28 flights)86MayJun 2026: 90% on time (30 flights)90JunJul 2026: 81% on time (31 flights)81JulAug 2026: 87% on time (31 flights)87Aug

By day of week

DayFlightsOn time
Monday2387%
Tuesday2291%
Wednesday2291%
Thursday2291%
Friday22100%
Saturday18—
Sunday2374%

Why it was late

Severe weather 46%Air traffic & airport (NAS) 32%Airline (crew, maintenance, ops) 21%Late inbound plane 1%

All flights IAD → BDL · Connecting off UA 632? Check the risk

Questions

How often is UA 632 from ATL to IAD late?

United Airlines 632 from Atlanta, GA to Washington, DC arrived 15 or more minutes late, was diverted or was cancelled on 14% of 298 scheduled flights between September 2025 and August 2026. 1.7% were cancelled.

How often is UA 632 from IAD to BDL late?

United Airlines 632 from Washington, DC to Hartford, CT arrived 15 or more minutes late, was diverted or was cancelled on 12% of 152 scheduled flights between September 2025 and August 2026. 1.3% 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.