Flight OddsUA1635 IAD → ATL
United Airlines · Washington, DC to Atlanta, GA · 82 flights observed, 2026-03-29 to 2026-06-30 · 534 mi
UA1635 covers more than one route in the data window — the stats below are for IAD → ATL, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
78%
Median delay
-8 min
90th percentile
+60 min
Cancellation rate
1%
How often is UA1635 on time?
Across 82 flights on IAD → ATL from 2026-03-29 to 2026-06-30, UA1635 arrived within 15 minutes of schedule 78% of the time. The median arrival delay was -8 min, and the worst 10% of flights arrived +60 min or later. 1% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 63 | 78% |
| 16-30 min | 5 | 6% |
| 31-60 min | 5 | 6% |
| 61-120 min | 5 | 6% |
| 2+ hrs | 3 | 4% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-03 | 1 | 0% | +77 min |
| 2026-04 | 21 | 95% | -8 min |
| 2026-05 | 30 | 67% | +18 min |
| 2026-06 | 29 | 79% | -1 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 9 | 100% |
| Tue | 9 | 67% |
| Wed | 13 | 54% |
| Thu | 11 | 91% |
| Fri | 13 | 69% |
| Sat | 13 | 85% |
| Sun | 13 | 85% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…