Flight OddsBOS → IAD United Airlines
United Airlines · Boston, MA to Washington, DC · 1,464 flights, 2025-07-01 to 2026-06-30 · aggregated across 12 flight numbers
On-time arrival
83%
Median delay
-8 min
90th percentile
+37 min
Cancellation rate
2%
How on-time is United Airlines from BOS to IAD?
Across every United Airlines flight number on BOS → IAD (1,464 flights, 2025-07-01 to 2026-06-30), 83% arrived within 15 minutes of schedule. Median arrival delay -8 min; the worst 10% ran +37 min or later. 2% were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 1,195 | 83% |
| 16-30 min | 68 | 5% |
| 31-60 min | 71 | 5% |
| 61-120 min | 52 | 4% |
| 2+ hrs | 46 | 3% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 121 | 72% | +27 min |
| 2025-08 | 133 | 80% | +6 min |
| 2025-09 | 141 | 82% | +8 min |
| 2025-10 | 123 | 73% | +12 min |
| 2025-11 | 117 | 87% | +3 min |
| 2025-12 | 122 | 84% | +3 min |
| 2026-01 | 103 | 86% | +1 min |
| 2026-02 | 96 | 90% | -4 min |
| 2026-03 | 116 | 89% | 0 min |
| 2026-04 | 120 | 88% | +1 min |
| 2026-05 | 122 | 89% | -2 min |
| 2026-06 | 118 | 85% | +6 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 201 | 86% |
| Tue | 203 | 86% |
| Wed | 200 | 83% |
| Thu | 206 | 78% |
| Fri | 212 | 85% |
| Sat | 205 | 88% |
| Sun | 205 | 80% |
UA flight numbers on BOS → IAD
Related
Based on US DOT Bureau of Transportation Statistics on-time data. Loading the full breakdown…