Flight OddsUnited Airlines · Salt Lake City, UT to Washington, DC · 74 flights observed, 2025-10-26 to 2026-02-11 · 1,827 mi
UA688 covers more than one route in the data window — the stats below are for SLC → IAD, the one it has flown most recently. The others are linked under “Other routes”.
How often is UA688 on time?
Across 74 flights on SLC → IAD from 2025-10-26 to 2026-02-11, UA688 arrived within 15 minutes of schedule 81% of the time. The median arrival delay was -2 min, and the worst 10% of flights arrived +25 min or later. 3% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 58 | 81% |
| 16-30 min | 8 | 11% |
| 31-60 min | 3 | 4% |
| 61-120 min | 2 | 3% |
| 2+ hrs | 1 | 1% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-10 | 6 | 100% | -2 min |
| 2025-11 | 30 | 90% | +5 min |
| 2025-12 | 1 | 100% | -7 min |
| 2026-01 | 24 | 75% | +9 min |
| 2026-02 | 11 | 55% | +12 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 10 | 90% |
| Tue | 11 | 91% |
| Wed | 11 | 91% |
| Thu | 10 | 70% |
| Fri | 10 | 80% |
| Sat | 10 | 80% |
| Sun | 10 | 60% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…