Flight OddsUA673 IAD → BOS
United Airlines · Washington, DC to Boston, MA · 37 flights observed, 2026-01-06 to 2026-02-11 · 412 mi
UA673 covers more than one route in the data window — the stats below are for IAD → BOS, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
91%
Median delay
-12 min
90th percentile
+2 min
Cancellation rate
5%
How often is UA673 on time?
Across 37 flights on IAD → BOS from 2026-01-06 to 2026-02-11, UA673 arrived within 15 minutes of schedule 91% of the time. The median arrival delay was -12 min, and the worst 10% of flights arrived +2 min or later. 5% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 32 | 91% |
| 16-30 min | 0 | 0% |
| 31-60 min | 1 | 3% |
| 61-120 min | 1 | 3% |
| 2+ hrs | 1 | 3% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-01 | 24 | 92% | -5 min |
| 2026-02 | 11 | 91% | +4 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 4 | 75% |
| Tue | 6 | 83% |
| Wed | 6 | 100% |
| Thu | 5 | 100% |
| Fri | 5 | 100% |
| Sat | 5 | 80% |
| Sun | 4 | 100% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…