About 1 in 9 UA 2639 flights from Dallas arrived 15+ minutes late, diverted or cancelled over the past year (11%); 1.4% were cancelled. The typical flight landed 11 minutes early.
UA 2639: DFW → IAD
Scheduled to leave Dallas at 7:25 a.m. local time. Over the past year it arrived on time 89% of the time (281 flights), in line with other UA flights on the route at that hour (89%). Last seen in the data Aug 31, 2026.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 52 | 90% |
| Tuesday | 26 | 88% |
| Wednesday | 19 | — |
| Thursday | 49 | 86% |
| Friday | 51 | 94% |
| Saturday | 37 | 86% |
| Sunday | 47 | 89% |
Why it was late
All flights DFW → IAD · Connecting off UA 2639? Check the risk
Questions
How often is UA 2639 from DFW to IAD late?
United Airlines 2639 from Dallas/Fort Worth, TX to Washington, DC arrived 15 or more minutes late, was diverted or was cancelled on 11% of 281 scheduled flights between September 2025 and August 2026. 1.4% 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.