Flight OddsUnited Airlines · Washington, DC to Dallas/Fort Worth, TX · 37 flights observed, 2025-08-19 to 2025-09-24 · 1,172 mi
UA1840 covers more than one route in the data window — the stats below are for IAD → DFW, the one it has flown most recently. The others are linked under “Other routes”.
How often is UA1840 on time?
Across 37 flights on IAD → DFW from 2025-08-19 to 2025-09-24, UA1840 arrived within 15 minutes of schedule 92% of the time. The median arrival delay was -10 min, and the worst 10% of flights arrived +11 min or later. 0% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 34 | 92% |
| 16-30 min | 1 | 3% |
| 31-60 min | 1 | 3% |
| 61-120 min | 1 | 3% |
| 2+ hrs | 0 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-08 | 13 | 100% | -5 min |
| 2025-09 | 24 | 88% | -4 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 5 | 100% |
| Tue | 6 | 83% |
| Wed | 6 | 83% |
| Thu | 5 | 100% |
| Fri | 5 | 80% |
| Sat | 5 | 100% |
| Sun | 5 | 100% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…