Flight profile · United Airlines
UA2634
Atlanta (ATL) to Washington (IAD) · scheduled 7:30 PM – 9:20 PM
How UA2634 performs
967 operations, 2023-07-04 to 2026-06-30.
UA2634 arrived on time 77.4% of the time, against 79.2% for all ATL → IAD flights — this specific departure is 1.9 percentage points worse than the route as a whole. Against United Airlines’s own flights on this route it is 5.1 points worse.
Source: US DOT Bureau of Transportation Statistics · 967 operations between 2023-07-04 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| UA2634 | 77.4% | 0.83% | -4 min | 10.2% | 967 |
| United Airlines on ATL → IAD | 82.5% | 0.86% | -6 min | 7.2% | 3,360 |
| All ATL → IAD flights | 79.2% | 1.37% | -4 min | 8.2% | 10,941 |
Source: FlyerIntel analysis of US DOT BTS data · 2023-07-04 to 2026-06-30
By day of week
Does UA2634 run worse on particular days?
Monday is historically the most reliable day and Friday the least, a gap of 18.2 percentage points.
Source: FlyerIntel analysis of US DOT BTS data · 2023-07-04 to 2026-06-30 · Days with fewer than 120 operations are not scored.
Other routes UA2634 has flown
A flight number is a slot in a schedule, and carriers reassign it. These are the other city pairs this number served in the analysis period.
| Route | Operated | Flights | On time |
|---|---|---|---|
| IAD→IND Washington to Indianapolis | 2026-05-22 – 2026-05-22 | 1 | — |
| ORD→MCO Chicago to Orlando | 2025-12-18 – 2026-01-05 | 19 | — |
| IAD→ORD Washington to Chicago | 2025-11-29 – 2025-11-30 | 2 | — |
| SFO→ATL San Francisco to Atlanta | 2024-12-19 – 2025-01-06 | 19 | — |
| RSW→EWR Fort Myers to Newark | 2023-12-21 – 2024-01-08 | 19 | — |
| IAH→MCO Houston to Orlando | 2023-11-26 – 2023-11-26 | 1 | — |
| IAD→RDU Washington to Raleigh–Durham | 2023-07-04 – 2023-09-04 | 63 | — |
Because the same number has served different journeys, the statistics above describe only the route UA2634 currently operates. Blending them would produce an average of two different flights.
Data and methodology
Calculated by FlyerIntel from 967 records of UA2634 operating ATL → IAD, published by the US DOT Bureau of Transportation Statistics. A flight counts as delayed when it arrives 15 or more minutes after schedule. Cancelled and diverted flights are excluded from the on-time rate and reported separately. Flight numbers are resolved as carrier plus number plus route, because the same number serves different routes over time.