Flight OddsUA3631 LGA → IAD
United Airlines · New York, NY to Washington, DC · 50 flights observed, 2025-07-01 to 2026-02-08 · 228 mi
UA3631 covers more than one route in the data window — the stats below are for LGA → IAD, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
77%
Median delay
-2 min
90th percentile
+29 min
Cancellation rate
4%
How often is UA3631 on time?
Across 50 flights on LGA → IAD from 2025-07-01 to 2026-02-08, UA3631 arrived within 15 minutes of schedule 77% of the time. The median arrival delay was -2 min, and the worst 10% of flights arrived +29 min or later. 4% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 37 | 77% |
| 16-30 min | 7 | 15% |
| 31-60 min | 2 | 4% |
| 61-120 min | 1 | 2% |
| 2+ hrs | 1 | 2% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 2 | 0% | +26 min |
| 2025-08 | 15 | 80% | +6 min |
| 2025-09 | 1 | 100% | +3 min |
| 2025-10 | 7 | 71% | +11 min |
| 2025-12 | 13 | 69% | +32 min |
| 2026-01 | 8 | 100% | -14 min |
| 2026-02 | 2 | 100% | -20 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 6 | 83% |
| Tue | 10 | 70% |
| Wed | 8 | 75% |
| Thu | 5 | 60% |
| Fri | 7 | 57% |
| Sat | 2 | 100% |
| Sun | 10 | 100% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…