ON TIMEBOARD
United Airlines / IAD → TPA

UA 2277 on time

United Airlines 2277: Washington to Tampa at 12:50 p.m.; Chicago to Washington at 8:45 a.m. (past 12 months). Figures below the title are for IAD → TPA, its busiest leg

On time
85%
365 flights · likely 81–89%
Cancelled
0.3%
of scheduled flights
Typical arrival
−7 min
median vs schedule
When late
+63 min
average delay
Similar flights
86%
UA, same route & hour

About 1 in 7 UA 2277 flights from Washington arrived 15+ minutes late, diverted or cancelled over the past year (15%); 0.3% were cancelled. The typical flight landed 7 minutes early.

UA 2277: IAD → TPA

Scheduled to leave Washington at 12:50 p.m. local time. Over the past year it arrived on time 85% of the time (365 flights), in line with other UA flights on the route at that hour (86%). Last seen in the data Aug 31, 2026.

Month by month

40%70%100%Sep 2025: 90% on time (30 flights)90SepOct 2025: 90% on time (31 flights)90OctNov 2025: 97% on time (30 flights)97NovDec 2025: 87% on time (31 flights)87DecJan 2026: 81% on time (31 flights)81JanFeb 2026: 89% on time (28 flights)89FebMar 2026: 74% on time (31 flights)74MarApr 2026: 93% on time (30 flights)93AprMay 2026: 90% on time (31 flights)90MayJun 2026: 80% on time (30 flights)80JunJul 2026: 65% on time (31 flights)65JulAug 2026: 90% on time (31 flights)90Aug

By day of week

DayFlightsOn time
Monday5383%
Tuesday5290%
Wednesday5290%
Thursday5287%
Friday5281%
Saturday5287%
Sunday5281%

Why it was late

Late inbound plane 40%Air traffic & airport (NAS) 38%Airline (crew, maintenance, ops) 21%Severe weather 1%

All flights IAD → TPA · Connecting off UA 2277? Check the risk

UA 2277: ORD → IAD

Scheduled to leave Chicago at 8:45 a.m. local time. Over the past year it arrived on time 92% of the time (156 flights), better than other UA flights on the route at that hour (87%). Last seen in the data Aug 31, 2026.

Month by month

40%70%100%May 2024: too few flights (9 flights)MayJun 2024: 73% on time (26 flights)73JunJun 2025: too few flights (5 flights)JunJul 2025: 77% on time (31 flights)77JulMar 2026: too few flights (3 flights)MarApr 2026: 87% on time (30 flights)87AprMay 2026: 94% on time (31 flights)94MayJun 2026: 97% on time (30 flights)97JunJul 2026: 90% on time (31 flights)90JulAug 2026: 90% on time (31 flights)90Aug

By day of week

DayFlightsOn time
Monday2391%
Tuesday2295%
Wednesday2291%
Thursday22100%
Friday2291%
Saturday2286%
Sunday2387%

Why it was late

Airline (crew, maintenance, ops) 58%Air traffic & airport (NAS) 37%Late inbound plane 5%

All flights ORD → IAD · Connecting off UA 2277? Check the risk

Questions

How often is UA 2277 from IAD to TPA late?

United Airlines 2277 from Washington, DC to Tampa, FL arrived 15 or more minutes late, was diverted or was cancelled on 15% of 365 scheduled flights between September 2025 and August 2026. 0.3% were cancelled.

How often is UA 2277 from ORD to IAD late?

United Airlines 2277 from Chicago, IL to Washington, DC arrived 15 or more minutes late, was diverted or was cancelled on 8% of 156 scheduled flights between September 2025 and August 2026. 0.0% 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.